使用ViewPager+Fragment实现选项卡切换效果

以你之姓@ 2022-07-26 11:22 180阅读 0赞

# 原文 #

[http://blog.csdn.net/chdjj/article/details/21564503][http_blog.csdn.net_chdjj_article_details_21564503]

主题  [ViewPager][]

显示效果：

![RJnEru.png_web][]![3yyqqa.png_web][]

实现过程：

1.创建3个选项卡中的内容，即三个Fragment。

这里仅贴出其中一个：

Tab2：

package com.example.viewpagerdemo3;
    
    import android.os.Bundle;
    import android.support.v4.app.Fragment;
    import android.view.LayoutInflater;
    import android.view.View;
    import android.view.View.OnClickListener;
    import android.view.ViewGroup;
    import android.widget.Button;
    import android.widget.Toast;
    
    public class Tab2 extends Fragment { 
     private Button but = null;
     @Override
     public View onCreateView(LayoutInflater inflater, ViewGroup container,
     Bundle savedInstanceState)
     {
     View view = inflater.inflate(R.layout.tab2,null);//注意不要指定父视图
     but = (Button) view.findViewById(R.id.but);
     return view;
     }
     @Override
     public void onActivityCreated(Bundle savedInstanceState)
     {
     super.onActivityCreated(savedInstanceState);
     but.setOnClickListener(new OnClickListener()
     {
     @Override
     public void onClick(View v)
     {
     Toast.makeText(Tab2.this.getActivity(),"hahah", 0).show();
     }
     });
     }
    }

布局：

<?xml version="1.0" encoding="utf-8"?>
    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:background="#00ff00"
     android:orientation="vertical" >
      
      <TextView 
     android:id="@+id/tab1"
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
     android:text="我是第二个界面"
     />
      <Button 
     android:id="@+id/but"
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
     android:text="我是按钮"
     />
    </LinearLayout>

剩下两个Fragment类似。

**2.主界面布局**

三个TextView代表选项卡标题，ImageView代表选项卡下的下划线。

3.实现activity。

package com.example.viewpagerdemo3; import android.graphics.BitmapFactory; import android.graphics.Color; import android.graphics.Matrix; import android.os.Bundle; import android.support.v4.app.Fragment; import android.support.v4.app.FragmentActivity; import android.support.v4.app.FragmentPagerAdapter; import android.support.v4.view.ViewPager; import android.support.v4.view.ViewPager.OnPageChangeListener; import android.util.DisplayMetrics; import android.view.animation.Animation; import android.view.animation.TranslateAnimation; import android.widget.ImageView; import android.widget.TextView; public class MainActivity extends FragmentActivity { private ViewPager vPager = null; /** * 代表选项卡下的下划线的imageview */ private ImageView cursor = null; /** * 选项卡下划线长度 */ private static int lineWidth = 0; /** * 偏移量 * （手机屏幕宽度/3-选项卡长度）/2 */ private static int offset = 0; /** * 选项卡总数 */ private static final int TAB_COUNT = 3; /** * 当前显示的选项卡位置 */ private int current_index = 0; /** * 选项卡标题 */ private TextView text1,text2,text3; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); vPager = (ViewPager) findViewById(R.id.vPager); initImageView(); text1 = (TextView) findViewById(R.id.text1); text2 = (TextView) findViewById(R.id.text2); text3 = (TextView) findViewById(R.id.text3); final TextView[] titles = {text1,text2,text3}; vPager.setAdapter(new FragmentPagerAdapter(getSupportFragmentManager()) { @Override public int getCount() { return TAB_COUNT; } @Override public Fragment getItem(int index)//直接创建fragment对象并返回 { switch (index) { case 0: return new Tab1(); case 1: return new Tab2(); case 2: return new Tab3(); } return null; } }); vPager.setOnPageChangeListener(new OnPageChangeListener() { int one = offset * 2 + lineWidth;// 页卡1 -> 页卡2 偏移量 @Override public void onPageSelected(int index)//设置标题的颜色以及下划线的移动效果 { Animation animation = new TranslateAnimation(one*current_index,one*index, 0,0); animation.setFillAfter(true); animation.setDuration(300); cursor.startAnimation(animation); titles[current_index].setTextColor(Color.BLACK); titles[index].setTextColor(Color.RED); current_index = index; } @Override public void onPageScrolled(int arg0, float arg1, int arg2) { } @Override public void onPageScrollStateChanged(int index) { } }); } private void initImageView() { cursor = (ImageView) findViewById(R.id.cursor); //获取图片宽度 lineWidth = BitmapFactory.decodeResource(getResources(),R.drawable.line).getWidth(); DisplayMetrics dm = new DisplayMetrics(); getWindowManager().getDefaultDisplay().getMetrics(dm); //获取屏幕宽度 int screenWidth = dm.widthPixels; Matrix matrix = new Matrix(); offset = (int) ((screenWidth/(float)TAB_COUNT - lineWidth)/2); matrix.postTranslate(offset, 0); //设置初始位置 cursor.setImageMatrix(matrix); } }           转载请标明出处：http://blog.csdn.net/lmj623565791/article/details/41087219，本文出自：【张鸿洋的博客】 1、概述 学习Android少不了模仿各种app的界面，自从微信6.0问世以后，就觉得微信切换时那个变色的Tab图标屌屌的，今天我就带大家自定义控件，带你变色变得飞起~~ 好了，下面先看下效果图： 清晰度不太好，大家凑合看~~有木有觉得这个颜色弱爆了了的，，，下面我动动手指给你换个颜色： 有没有这个颜色比较妖一点~~~好了~下面开始介绍原理。 2、原理介绍 通过上面的效果图，大家可能也猜到了，我们的图标并非是两张图片，而是一张图，并且目标颜色是可定制的，谁让现在动不动就谈个性化呢。 那么我们如何做到，可以让图标随心所遇的变色了，其实原理，在我的博客中出现了很多次了，下面你将看到一张熟悉的图： 有没有很熟悉的感脚，我们实际上还是利用了Paint的Xfermode，这次我们使用的是：Mode.DST_IN Dst_IN回顾一下什么效果，先绘制Dst，设置Mode，再绘制Src，则显示的是先后绘图的交集区域，且是Dst. 再仔细观察下我们的图标： 为了方便大家的观看，我特意拿ps选择了一下我们图标的非透明区域，可以看到，我们这个小机器人非透明区域就是被线框起来的部分。 然后，我们图标变色的原理就出现了： 1、先绘制一个颜色（例如：粉红） 2、设置Mode=DST_IN 3、绘制我们这个可爱的小机器人 回答我，显示什么，是不是显示交集，交集是什么？交集是我们的小机器人的非透明区域，也就是那张脸，除了两个眼； 好了，那怎么变色呢？ 我绘制一个颜色的时候，难道不能设置alpha么~~~ 到此，大家应该已经了解了我们图标的绘制的原理了吧。 如果你对Mode不熟悉：建议移步至：Android 自定义控件实现刮刮卡效果 真的就只是刮刮卡么 3、自定义图标控件 我们的整个界面不用说，是ViewPager+Fragment ，现在关注的是底部~~ 接下来我们考虑，底部的Tab，Tab我们的布局是LinearLayout，内部四个View，通过设置weight达到均分~~ 这个View就是我们的自定义的图标控件了，我们叫做：ChangeColorIconWithTextView 接下来考虑，应该有什么属性公布出来 1、自定义属性 想了一下，我决定把图标，图标颜色，图标下显示的文字，文字大小这四个属性作为自定义属性。 那就自定义属性走起了： a、values/attr.xml 
         
          [java] view plain copy print ? <?xml version="1.0" encoding="utf-8"?> <resources> <attr name="icon" format="reference" /> <attr name="color" format="color" /> <attr name="text" format="string" /> <attr name="text_size" format="dimension" /> <declare-styleable name="ChangeColorIconView"> <attr name="icon" /> <attr name="color" /> <attr name="text" /> <attr name="text_size" /> </declare-styleable> </resources> <?xml version="1.0" encoding="utf-8"?>
    <resources>
    
        <attr name="icon" format="reference" />
        <attr name="color" format="color" />
        <attr name="text" format="string" />
        <attr name="text_size" format="dimension" />
    
        <declare-styleable name="ChangeColorIconView">
            <attr name="icon" />
            <attr name="color" />
            <attr name="text" />
            <attr name="text_size" />
        </declare-styleable>
    
    </resources> 
    b、在布局文件中使用 
        
         
         
          [html] view plain copy print ? 
         
          <com.zhy.weixin6.ui.ChangeColorIconWithTextView android:id="@+id/id_indicator_one" android:layout_width="0dp" android:layout_height="fill_parent" android:layout_weight="1" android:padding="5dp" zhy:icon="@drawable/ic_menu_start_conversation" zhy:text="@string/tab_weixin" zhy:text_size="12sp" /> 
        
          <com.zhy.weixin6.ui.ChangeColorIconWithTextView
                android:id="@+id/id_indicator_one"
                android:layout_width="0dp"
                android:layout_height="fill_parent"
                android:layout_weight="1"
                android:padding="5dp"
                zhy:icon="@drawable/ic_menu_start_conversation"
                zhy:text="@string/tab_weixin"
                zhy:text_size="12sp" /> 
    自己注意命名空间的写法，xmlns:zhy="http://schemas.android.com/apk/res/应用的包名"。 c、在构造方法中获取 
        
         
         
          [java] view plain copy print ? 
         
          public class ChangeColorIconWithTextView extends View { private Bitmap mBitmap; private Canvas mCanvas; private Paint mPaint; /** * 颜色 */ private int mColor = 0xFF45C01A; /** * 透明度 0.0-1.0 */ private float mAlpha = 0f; /** * 图标 */ private Bitmap mIconBitmap; /** * 限制绘制icon的范围 */ private Rect mIconRect; /** * icon底部文本 */ private String mText = "微信"; private int mTextSize = (int) TypedValue.applyDimension( TypedValue.COMPLEX_UNIT_SP, 10, getResources().getDisplayMetrics()); private Paint mTextPaint; private Rect mTextBound = new Rect(); public ChangeColorIconWithTextView(Context context) { super(context); } /** * 初始化自定义属性值 * * @param context * @param attrs */ public ChangeColorIconWithTextView(Context context, AttributeSet attrs) { super(context, attrs); // 获取设置的图标 TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.ChangeColorIconView); int n = a.getIndexCount(); for (int i = 0; i < n; i++) { int attr = a.getIndex(i); switch (attr) { case R.styleable.ChangeColorIconView_icon: BitmapDrawable drawable = (BitmapDrawable) a.getDrawable(attr); mIconBitmap = drawable.getBitmap(); break; case R.styleable.ChangeColorIconView_color: mColor = a.getColor(attr, 0x45C01A); break; case R.styleable.ChangeColorIconView_text: mText = a.getString(attr); break; case R.styleable.ChangeColorIconView_text_size: mTextSize = (int) a.getDimension(attr, TypedValue .applyDimension(TypedValue.COMPLEX_UNIT_SP, 10, getResources().getDisplayMetrics())); break; } } a.recycle(); mTextPaint = new Paint(); mTextPaint.setTextSize(mTextSize); mTextPaint.setColor(0xff555555); // 得到text绘制范围 mTextPaint.getTextBounds(mText, 0, mText.length(), mTextBound); } 
        
         public class ChangeColorIconWithTextView extends View
    {
    
    	private Bitmap mBitmap;
    	private Canvas mCanvas;
    	private Paint mPaint;
    	/**
    	 * 颜色
    	 */
    	private int mColor = 0xFF45C01A;
    	/**
    	 * 透明度 0.0-1.0
    	 */
    	private float mAlpha = 0f;
    	/**
    	 * 图标
    	 */
    	private Bitmap mIconBitmap;
    	/**
    	 * 限制绘制icon的范围
    	 */
    	private Rect mIconRect;
    	/**
    	 * icon底部文本
    	 */
    	private String mText = "微信";
    	private int mTextSize = (int) TypedValue.applyDimension(
    			TypedValue.COMPLEX_UNIT_SP, 10, getResources().getDisplayMetrics());
    	private Paint mTextPaint;
    	private Rect mTextBound = new Rect();
    
    	public ChangeColorIconWithTextView(Context context)
    	{
    		super(context);
    	}
    
    	/**
    	 * 初始化自定义属性值
    	 * 
    	 * @param context
    	 * @param attrs
    	 */
    	public ChangeColorIconWithTextView(Context context, AttributeSet attrs)
    	{
    		super(context, attrs);
    
    		// 获取设置的图标
    		TypedArray a = context.obtainStyledAttributes(attrs,
    				R.styleable.ChangeColorIconView);
    
    		int n = a.getIndexCount();
    		for (int i = 0; i < n; i++)
    		{
    
    			int attr = a.getIndex(i);
    			switch (attr)
    			{
    			case R.styleable.ChangeColorIconView_icon:
    				BitmapDrawable drawable = (BitmapDrawable) a.getDrawable(attr);
    				mIconBitmap = drawable.getBitmap();
    				break;
    			case R.styleable.ChangeColorIconView_color:
    				mColor = a.getColor(attr, 0x45C01A);
    				break;
    			case R.styleable.ChangeColorIconView_text:
    				mText = a.getString(attr);
    				break;
    			case R.styleable.ChangeColorIconView_text_size:
    				mTextSize = (int) a.getDimension(attr, TypedValue
    						.applyDimension(TypedValue.COMPLEX_UNIT_SP, 10,
    								getResources().getDisplayMetrics()));
    				break;
    
    			}
    		}
    
    		a.recycle();
    
    		mTextPaint = new Paint();
    		mTextPaint.setTextSize(mTextSize);
    		mTextPaint.setColor(0xff555555);
    		// 得到text绘制范围
    		mTextPaint.getTextBounds(mText, 0, mText.length(), mTextBound);
    
    	} 
    可以看到，我们在构造方法中获取了自定义的属性，并且计算了文本占据的控件存在我们的mTextBound中。 2、图标的绘制区域的选择 我们考虑下，有了属性，我们需要绘制一个文本，文本之上一个图标，我们怎么去控制绘制的区域呢？
    我们的View显示区域，无非以下三种情况： 
     针对这三种情况，我门的图标的边长应该是什么呢？ 我觉得边长应该是：控件的高度-文本的高度-内边距   与  控件的宽度-内边距  两者的小值；大家仔细推敲一下； 好了，有了上面的边长的结论，我们就开始计算图标的绘制范围了： 
        
         
         
          [java] view plain copy print ? 
         
          @Override protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { super.onMeasure(widthMeasureSpec, heightMeasureSpec); // 得到绘制icon的宽 int bitmapWidth = Math.min(getMeasuredWidth() - getPaddingLeft() - getPaddingRight(), getMeasuredHeight() - getPaddingTop() - getPaddingBottom() - mTextBound.height()); int left = getMeasuredWidth() / 2 - bitmapWidth / 2; int top = (getMeasuredHeight() - mTextBound.height()) / 2 - bitmapWidth / 2; // 设置icon的绘制范围 mIconRect = new Rect(left, top, left + bitmapWidth, top + bitmapWidth); } 
        
         	@Override
    	protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec)
    	{
    		super.onMeasure(widthMeasureSpec, heightMeasureSpec);
    
    		// 得到绘制icon的宽
    		int bitmapWidth = Math.min(getMeasuredWidth() - getPaddingLeft()
    				- getPaddingRight(), getMeasuredHeight() - getPaddingTop()
    				- getPaddingBottom() - mTextBound.height());
    
    		int left = getMeasuredWidth() / 2 - bitmapWidth / 2;
    		int top = (getMeasuredHeight() - mTextBound.height()) / 2 - bitmapWidth
    				/ 2;
    		// 设置icon的绘制范围
    		mIconRect = new Rect(left, top, left + bitmapWidth, top + bitmapWidth);
    
    	}
     
      3、绘制图标 绘制图标有很多步骤呀，我来列一列 1、计算alpha（默认为0） 2、绘制原图 3、在绘图区域，绘制一个纯色块（设置了alpha），此步绘制在内存的bitmap上 4、设置mode，针对内存中的bitmap上的paint 5、绘制我们的图标，此步绘制在内存的bitmap上 6、绘制原文本 7、绘制设置alpha和颜色后的文本 8、将内存中的bitmap绘制出来 根据上面的步骤，可以看出来，我们的图标其实绘制了两次，为什么要绘制原图呢，因为我觉得比较好看。 3-5步骤，就是我们上面分析的原理 6-7步，是绘制文本，可以看到，我们的文本就是通过设置alpha实现的 
        
         
         
          [java] view plain copy print ? 
         
          @Override protected void onDraw(Canvas canvas) { int alpha = (int) Math.ceil((255 * mAlpha)); canvas.drawBitmap(mIconBitmap, null, mIconRect, null); setupTargetBitmap(alpha); drawSourceText(canvas, alpha); drawTargetText(canvas, alpha); canvas.drawBitmap(mBitmap, 0, 0, null); } private void setupTargetBitmap(int alpha) { mBitmap = Bitmap.createBitmap(getMeasuredWidth(), getMeasuredHeight(), Config.ARGB_8888); mCanvas = new Canvas(mBitmap); mPaint = new Paint(); mPaint.setColor(mColor); mPaint.setAntiAlias(true); mPaint.setDither(true); mPaint.setAlpha(alpha); mCanvas.drawRect(mIconRect, mPaint); mPaint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.DST_IN)); mPaint.setAlpha(255); mCanvas.drawBitmap(mIconBitmap, null, mIconRect, mPaint); } private void drawSourceText(Canvas canvas, int alpha) { mTextPaint.setTextSize(mTextSize); mTextPaint.setColor(0xff333333); mTextPaint.setAlpha(255 - alpha); canvas.drawText(mText, mIconRect.left + mIconRect.width() / 2 - mTextBound.width() / 2, mIconRect.bottom + mTextBound.height(), mTextPaint); } private void drawTargetText(Canvas canvas, int alpha) { mTextPaint.setColor(mColor); mTextPaint.setAlpha(alpha); canvas.drawText(mText, mIconRect.left + mIconRect.width() / 2 - mTextBound.width() / 2, mIconRect.bottom + mTextBound.height(), mTextPaint); } 
        
         @Override
    	protected void onDraw(Canvas canvas)
    	{
    
    		int alpha = (int) Math.ceil((255 * mAlpha));
    		canvas.drawBitmap(mIconBitmap, null, mIconRect, null);
    		setupTargetBitmap(alpha);
    		drawSourceText(canvas, alpha);
    		drawTargetText(canvas, alpha);
    		canvas.drawBitmap(mBitmap, 0, 0, null);
    
    	}
    	
    	private void setupTargetBitmap(int alpha)
    	{
    		mBitmap = Bitmap.createBitmap(getMeasuredWidth(), getMeasuredHeight(),
    				Config.ARGB_8888);
    		mCanvas = new Canvas(mBitmap);
    		mPaint = new Paint();
    		mPaint.setColor(mColor);
    		mPaint.setAntiAlias(true);
    		mPaint.setDither(true);
    		mPaint.setAlpha(alpha);
    		mCanvas.drawRect(mIconRect, mPaint);
    		mPaint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.DST_IN));
    		mPaint.setAlpha(255);
    		mCanvas.drawBitmap(mIconBitmap, null, mIconRect, mPaint);
    	}
    
    	private void drawSourceText(Canvas canvas, int alpha)
    	{
    		mTextPaint.setTextSize(mTextSize);
    		mTextPaint.setColor(0xff333333);
    		mTextPaint.setAlpha(255 - alpha);
    		canvas.drawText(mText, mIconRect.left + mIconRect.width() / 2
    				- mTextBound.width() / 2,
    				mIconRect.bottom + mTextBound.height(), mTextPaint);
    	}
    	
    	private void drawTargetText(Canvas canvas, int alpha)
    	{
    		mTextPaint.setColor(mColor);
    		mTextPaint.setAlpha(alpha);
    		canvas.drawText(mText, mIconRect.left + mIconRect.width() / 2
    				- mTextBound.width() / 2,
    				mIconRect.bottom + mTextBound.height(), mTextPaint);
    		
    	} 
    关于绘制文本区域的计算，首先是起点x：mIconRect.left + mIconRect.width() / 2- mTextBound.width() / 2 有点长哈，文本mIconRect.left + mIconRect.width() / 2这个位置，在图标水平区域的中心点，这个应该没有疑问；图标水平区域的中点- mTextBound.width() / 2 开始绘制文本，是不是就是居中在图标的下面； 有人可能会问：你怎么知道文本宽度小于图标，我有5个字咋办？5个字怎么了，照样是居中显示，不信你试试~~ 4、公布设置透明度的方法 到此，我们的图标控件写完了，但是还没有把我们的控制icon的方法放出去： 
        
         
         
          [java] view plain copy print ? 
         
          public void setIconAlpha(float alpha) { this.mAlpha = alpha; invalidateView(); } private void invalidateView() { if (Looper.getMainLooper() == Looper.myLooper()) { invalidate(); } else { postInvalidate(); } } 
        
         	public void setIconAlpha(float alpha)
    	{
    		this.mAlpha = alpha;
    		invalidateView();
    	}
    
    	private void invalidateView()
    	{
    		if (Looper.getMainLooper() == Looper.myLooper())
    		{
    			invalidate();
    		} else
    		{
    			postInvalidate();
    		}
    	} 
    我们叫做setIconAlpha，避免了和setAlpha冲突，设置完成后，invalidate一下~~~ 
     到此就真的结束了，接下来看用法。 
     4、实战
        
         
         
          
    
        
         1、布局文件 
        
         
         
          [html] view plain copy print ? 
         
          <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:zhy="http://schemas.android.com/apk/res/com.zhy.weixin6.ui" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" > <android.support.v4.view.ViewPager android:id="@+id/id_viewpager" android:layout_width="fill_parent" android:layout_height="0dp" android:layout_weight="1" > </android.support.v4.view.ViewPager> <LinearLayout android:layout_width="fill_parent" android:layout_height="60dp" android:background="@drawable/tabbg" android:orientation="horizontal" > <com.zhy.weixin6.ui.ChangeColorIconWithTextView android:id="@+id/id_indicator_one" android:layout_width="0dp" android:layout_height="fill_parent" android:layout_weight="1" android:padding="5dp" zhy:icon="@drawable/ic_menu_start_conversation" zhy:text="@string/tab_weixin" zhy:text_size="12sp" /> <com.zhy.weixin6.ui.ChangeColorIconWithTextView android:id="@+id/id_indicator_two" android:layout_width="0dp" android:layout_height="fill_parent" android:layout_weight="1" android:padding="5dp" zhy:icon="@drawable/ic_menu_friendslist" zhy:text="@string/tab_contact" zhy:text_size="12sp" /> <com.zhy.weixin6.ui.ChangeColorIconWithTextView android:id="@+id/id_indicator_three" android:layout_width="0dp" android:layout_height="fill_parent" android:layout_weight="1" android:padding="5dp" zhy:icon="@drawable/ic_menu_emoticons" zhy:text="@string/tab_find" zhy:text_size="12sp" /> <com.zhy.weixin6.ui.ChangeColorIconWithTextView android:id="@+id/id_indicator_four" android:layout_width="0dp" android:layout_height="fill_parent" android:layout_weight="1" android:padding="5dp" zhy:icon="@drawable/ic_menu_allfriends" zhy:text="@string/tab_me" zhy:text_size="12sp" /> </LinearLayout> </LinearLayout> 
        
         <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:zhy="http://schemas.android.com/apk/res/com.zhy.weixin6.ui"
        xmlns:tools="http://schemas.android.com/tools"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical" >
    
        <android.support.v4.view.ViewPager
            android:id="@+id/id_viewpager"
            android:layout_width="fill_parent"
            android:layout_height="0dp"
            android:layout_weight="1" >
        </android.support.v4.view.ViewPager>
    
        <LinearLayout
            android:layout_width="fill_parent"
            android:layout_height="60dp"
            android:background="@drawable/tabbg"
            android:orientation="horizontal" >
    
            <com.zhy.weixin6.ui.ChangeColorIconWithTextView
                android:id="@+id/id_indicator_one"
                android:layout_width="0dp"
                android:layout_height="fill_parent"
                android:layout_weight="1"
                android:padding="5dp"
                zhy:icon="@drawable/ic_menu_start_conversation"
                zhy:text="@string/tab_weixin"
                zhy:text_size="12sp" />
    
            <com.zhy.weixin6.ui.ChangeColorIconWithTextView
                android:id="@+id/id_indicator_two"
                android:layout_width="0dp"
                android:layout_height="fill_parent"
                android:layout_weight="1"
                android:padding="5dp"
                zhy:icon="@drawable/ic_menu_friendslist"
                zhy:text="@string/tab_contact"
                zhy:text_size="12sp" />
    
            <com.zhy.weixin6.ui.ChangeColorIconWithTextView
                android:id="@+id/id_indicator_three"
                android:layout_width="0dp"
                android:layout_height="fill_parent"
                android:layout_weight="1"
                android:padding="5dp"
                zhy:icon="@drawable/ic_menu_emoticons"
                zhy:text="@string/tab_find"
                zhy:text_size="12sp" />
    
            <com.zhy.weixin6.ui.ChangeColorIconWithTextView
                android:id="@+id/id_indicator_four"
                android:layout_width="0dp"
                android:layout_height="fill_parent"
                android:layout_weight="1"
                android:padding="5dp"
                zhy:icon="@drawable/ic_menu_allfriends"
                zhy:text="@string/tab_me"
                zhy:text_size="12sp" />
        </LinearLayout>
    
    </LinearLayout> 
      2、MainActivity 
        
         
         
          [java] view plain copy print ? 
         
          package com.zhy.weixin6.ui; import java.lang.reflect.Field; import java.lang.reflect.Method; import java.util.ArrayList; import java.util.List; import android.annotation.SuppressLint; import android.os.Bundle; import android.support.v4.app.Fragment; import android.support.v4.app.FragmentActivity; import android.support.v4.app.FragmentPagerAdapter; import android.support.v4.view.ViewPager; import android.support.v4.view.ViewPager.OnPageChangeListener; import android.view.Menu; import android.view.View; import android.view.View.OnClickListener; import android.view.ViewConfiguration; import android.view.Window; @SuppressLint("NewApi") public class MainActivity extends FragmentActivity implements OnPageChangeListener, OnClickListener { private ViewPager mViewPager; private List<Fragment> mTabs = new ArrayList<Fragment>(); private FragmentPagerAdapter mAdapter; private String[] mTitles = new String[] { "First Fragment!", "Second Fragment!", "Third Fragment!", "Fourth Fragment!" }; private List<ChangeColorIconWithTextView> mTabIndicator = new ArrayList<ChangeColorIconWithTextView>(); @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); setOverflowShowingAlways(); getActionBar().setDisplayShowHomeEnabled(false); mViewPager = (ViewPager) findViewById(R.id.id_viewpager); initDatas(); mViewPager.setAdapter(mAdapter); mViewPager.setOnPageChangeListener(this); } private void initDatas() { for (String title : mTitles) { TabFragment tabFragment = new TabFragment(); Bundle args = new Bundle(); args.putString("title", title); tabFragment.setArguments(args); mTabs.add(tabFragment); } mAdapter = new FragmentPagerAdapter(getSupportFragmentManager()) { @Override public int getCount() { return mTabs.size(); } @Override public Fragment getItem(int arg0) { return mTabs.get(arg0); } }; initTabIndicator(); } @Override public boolean onCreateOptionsMenu(Menu menu) { getMenuInflater().inflate(R.menu.main, menu); return true; } private void initTabIndicator() { ChangeColorIconWithTextView one = (ChangeColorIconWithTextView) findViewById(R.id.id_indicator_one); ChangeColorIconWithTextView two = (ChangeColorIconWithTextView) findViewById(R.id.id_indicator_two); ChangeColorIconWithTextView three = (ChangeColorIconWithTextView) findViewById(R.id.id_indicator_three); ChangeColorIconWithTextView four = (ChangeColorIconWithTextView) findViewById(R.id.id_indicator_four); mTabIndicator.add(one); mTabIndicator.add(two); mTabIndicator.add(three); mTabIndicator.add(four); one.setOnClickListener(this); two.setOnClickListener(this); three.setOnClickListener(this); four.setOnClickListener(this); one.setIconAlpha(1.0f); } @Override public void onPageSelected(int arg0) { } @Override public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) { // Log.e("TAG", "position = " + position + " , positionOffset = " // + positionOffset); if (positionOffset > 0) { ChangeColorIconWithTextView left = mTabIndicator.get(position); ChangeColorIconWithTextView right = mTabIndicator.get(position + 1); left.setIconAlpha(1 - positionOffset); right.setIconAlpha(positionOffset); } } @Override public void onPageScrollStateChanged(int state) { } @Override public void onClick(View v) { resetOtherTabs(); switch (v.getId()) { case R.id.id_indicator_one: mTabIndicator.get(0).setIconAlpha(1.0f); mViewPager.setCurrentItem(0, false); break; case R.id.id_indicator_two: mTabIndicator.get(1).setIconAlpha(1.0f); mViewPager.setCurrentItem(1, false); break; case R.id.id_indicator_three: mTabIndicator.get(2).setIconAlpha(1.0f); mViewPager.setCurrentItem(2, false); break; case R.id.id_indicator_four: mTabIndicator.get(3).setIconAlpha(1.0f); mViewPager.setCurrentItem(3, false); break; } } /** * 重置其他的Tab */ private void resetOtherTabs() { for (int i = 0; i < mTabIndicator.size(); i++) { mTabIndicator.get(i).setIconAlpha(0); } } @Override public boolean onMenuOpened(int featureId, Menu menu) { if (featureId == Window.FEATURE_ACTION_BAR && menu != null) { if (menu.getClass().getSimpleName().equals("MenuBuilder")) { try { Method m = menu.getClass().getDeclaredMethod( "setOptionalIconsVisible", Boolean.TYPE); m.setAccessible(true); m.invoke(menu, true); } catch (Exception e) { } } } return super.onMenuOpened(featureId, menu); } private void setOverflowShowingAlways() { try { // true if a permanent menu key is present, false otherwise. ViewConfiguration config = ViewConfiguration.get(this); Field menuKeyField = ViewConfiguration.class .getDeclaredField("sHasPermanentMenuKey"); menuKeyField.setAccessible(true); menuKeyField.setBoolean(config, false); } catch (Exception e) { e.printStackTrace(); } } } 
        
         package com.zhy.weixin6.ui;
    
    import java.lang.reflect.Field;
    import java.lang.reflect.Method;
    import java.util.ArrayList;
    import java.util.List;
    
    import android.annotation.SuppressLint;
    import android.os.Bundle;
    import android.support.v4.app.Fragment;
    import android.support.v4.app.FragmentActivity;
    import android.support.v4.app.FragmentPagerAdapter;
    import android.support.v4.view.ViewPager;
    import android.support.v4.view.ViewPager.OnPageChangeListener;
    import android.view.Menu;
    import android.view.View;
    import android.view.View.OnClickListener;
    import android.view.ViewConfiguration;
    import android.view.Window;
    
    @SuppressLint("NewApi")
    public class MainActivity extends FragmentActivity implements
    		OnPageChangeListener, OnClickListener
    {
    	private ViewPager mViewPager;
    	private List<Fragment> mTabs = new ArrayList<Fragment>();
    	private FragmentPagerAdapter mAdapter;
    
    	private String[] mTitles = new String[] { "First Fragment!",
    			"Second Fragment!", "Third Fragment!", "Fourth Fragment!" };
    
    	private List<ChangeColorIconWithTextView> mTabIndicator = new ArrayList<ChangeColorIconWithTextView>();
    
    	@Override
    	protected void onCreate(Bundle savedInstanceState)
    	{
    		super.onCreate(savedInstanceState);
    		setContentView(R.layout.activity_main);
    
    		setOverflowShowingAlways();
    		getActionBar().setDisplayShowHomeEnabled(false);
    		mViewPager = (ViewPager) findViewById(R.id.id_viewpager);
    
    		initDatas();
    
    		mViewPager.setAdapter(mAdapter);
    		mViewPager.setOnPageChangeListener(this);
    	}
    
    	private void initDatas()
    	{
    
    		for (String title : mTitles)
    		{
    			TabFragment tabFragment = new TabFragment();
    			Bundle args = new Bundle();
    			args.putString("title", title);
    			tabFragment.setArguments(args);
    			mTabs.add(tabFragment);
    		}
    
    		mAdapter = new FragmentPagerAdapter(getSupportFragmentManager())
    		{
    
    			@Override
    			public int getCount()
    			{
    				return mTabs.size();
    			}
    
    			@Override
    			public Fragment getItem(int arg0)
    			{
    				return mTabs.get(arg0);
    			}
    		};
    
    		initTabIndicator();
    
    	}
    
    	@Override
    	public boolean onCreateOptionsMenu(Menu menu)
    	{
    		getMenuInflater().inflate(R.menu.main, menu);
    		return true;
    	}
    
    	private void initTabIndicator()
    	{
    		ChangeColorIconWithTextView one = (ChangeColorIconWithTextView) findViewById(R.id.id_indicator_one);
    		ChangeColorIconWithTextView two = (ChangeColorIconWithTextView) findViewById(R.id.id_indicator_two);
    		ChangeColorIconWithTextView three = (ChangeColorIconWithTextView) findViewById(R.id.id_indicator_three);
    		ChangeColorIconWithTextView four = (ChangeColorIconWithTextView) findViewById(R.id.id_indicator_four);
    
    		mTabIndicator.add(one);
    		mTabIndicator.add(two);
    		mTabIndicator.add(three);
    		mTabIndicator.add(four);
    
    		one.setOnClickListener(this);
    		two.setOnClickListener(this);
    		three.setOnClickListener(this);
    		four.setOnClickListener(this);
    
    		one.setIconAlpha(1.0f);
    	}
    
    	@Override
    	public void onPageSelected(int arg0)
    	{
    	}
    
    	@Override
    	public void onPageScrolled(int position, float positionOffset,
    			int positionOffsetPixels)
    	{
    		// Log.e("TAG", "position = " + position + " , positionOffset = "
    		// + positionOffset);
    
    		if (positionOffset > 0)
    		{
    			ChangeColorIconWithTextView left = mTabIndicator.get(position);
    			ChangeColorIconWithTextView right = mTabIndicator.get(position + 1);
    
    			left.setIconAlpha(1 - positionOffset);
    			right.setIconAlpha(positionOffset);
    		}
    
    	}
    
    	@Override
    	public void onPageScrollStateChanged(int state)
    	{
    
    	}
    
    	@Override
    	public void onClick(View v)
    	{
    
    		resetOtherTabs();
    
    		switch (v.getId())
    		{
    		case R.id.id_indicator_one:
    			mTabIndicator.get(0).setIconAlpha(1.0f);
    			mViewPager.setCurrentItem(0, false);
    			break;
    		case R.id.id_indicator_two:
    			mTabIndicator.get(1).setIconAlpha(1.0f);
    			mViewPager.setCurrentItem(1, false);
    			break;
    		case R.id.id_indicator_three:
    			mTabIndicator.get(2).setIconAlpha(1.0f);
    			mViewPager.setCurrentItem(2, false);
    			break;
    		case R.id.id_indicator_four:
    			mTabIndicator.get(3).setIconAlpha(1.0f);
    			mViewPager.setCurrentItem(3, false);
    			break;
    
    		}
    
    	}
    
    	/**
    	 * 重置其他的Tab
    	 */
    	private void resetOtherTabs()
    	{
    		for (int i = 0; i < mTabIndicator.size(); i++)
    		{
    			mTabIndicator.get(i).setIconAlpha(0);
    		}
    	}
    
    	@Override
    	public boolean onMenuOpened(int featureId, Menu menu)
    	{
    		if (featureId == Window.FEATURE_ACTION_BAR && menu != null)
    		{
    			if (menu.getClass().getSimpleName().equals("MenuBuilder"))
    			{
    				try
    				{
    					Method m = menu.getClass().getDeclaredMethod(
    							"setOptionalIconsVisible", Boolean.TYPE);
    					m.setAccessible(true);
    					m.invoke(menu, true);
    				} catch (Exception e)
    				{
    				}
    			}
    		}
    		return super.onMenuOpened(featureId, menu);
    	}
    
    	private void setOverflowShowingAlways()
    	{
    		try
    		{
    			// true if a permanent menu key is present, false otherwise.
    			ViewConfiguration config = ViewConfiguration.get(this);
    			Field menuKeyField = ViewConfiguration.class
    					.getDeclaredField("sHasPermanentMenuKey");
    			menuKeyField.setAccessible(true);
    			menuKeyField.setBoolean(config, false);
    		} catch (Exception e)
    		{
    			e.printStackTrace();
    		}
    	}
    
    }
     
    Activity里面代码虽然没什么注释，但是很简单哈，就是初始化Fragment，得到我们的适配器，然后设置给ViewPager； initTabIndicator我们初始化我们的自定义控件，以及加上了点击事件；
     唯一一个需要指出的就是： 我们在onPageScrolled中，动态的获取position以及positionOffset，然后拿到左右两个View，设置positionOffset ； 这里表示下惭愧，曾经在高仿微信5.2.1主界面架构 包含消息通知 的onPageScrolled中写了一堆的if else，在视频上线后，也有同学立马就提出了，一行代码搞定~~ 所以，我们这里简单找了下规律，已经没有if else的身影了~~~ 还剩两个反射的方法，是控制Actionbar的图标的，和点击menu按键，将ActionBar的menu显示在正常区域的~~ 3、TabFragment 
        
         
         
          [java] view plain copy print ? 
         
          package com.zhy.weixin6.ui; import android.graphics.Color; import android.os.Bundle; import android.support.v4.app.Fragment; import android.view.Gravity; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.TextView; public class TabFragment extends Fragment { private String mTitle = "Default"; public TabFragment() { } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { if (getArguments() != null) { mTitle = getArguments().getString("title"); } TextView textView = new TextView(getActivity()); textView.setTextSize(20); textView.setBackgroundColor(Color.parseColor("#ffffffff")); textView.setGravity(Gravity.CENTER); textView.setText(mTitle); return textView; } } 
        
         package com.zhy.weixin6.ui;
    
    import android.graphics.Color;
    import android.os.Bundle;
    import android.support.v4.app.Fragment;
    import android.view.Gravity;
    import android.view.LayoutInflater;
    import android.view.View;
    import android.view.ViewGroup;
    import android.widget.TextView;
    
    public class TabFragment extends Fragment
    {
    	private String mTitle = "Default";
    	
    
    	public TabFragment()
    	{
    	}
    
    	@Override
    	public View onCreateView(LayoutInflater inflater, ViewGroup container,
    			Bundle savedInstanceState)
    	{
    		if (getArguments() != null)
    		{
    			mTitle = getArguments().getString("title");
    		}
    
    		TextView textView = new TextView(getActivity());
    		textView.setTextSize(20);
    		textView.setBackgroundColor(Color.parseColor("#ffffffff"));
    		textView.setGravity(Gravity.CENTER);
    		textView.setText(mTitle);
    		return textView;
    	}
    }
     
    
      
     好了，到此我们的整个案例就结束了~~ 大家可以在布局文件中设置各种颜色，4个不同颜色也可以，尽情的玩耍吧~~ 
     
     源码点击下载 
     
     
     
     我建了一个QQ群，方便大家交流。群号：55032675 ---------------------------------------------------------------------------------------------------------- 博主部分视频已经上线，如果你不喜欢枯燥的文本，请猛戳（初录，期待您的支持）： 1、Android 自定义控件实战 电商活动中的刮刮卡 2、Android自定义控件实战 打造Android流式布局和热门标签
     3、Android智能机器人“小慕”的实现
     4、高仿QQ5.0侧滑
     5、高仿微信5.2.1主界面及消息提醒       Android ViewPager+RadioGroup+Fragment超高仿微信6.0底部滑动菜单,可通过左右滑动或点击底部RadioButton切换Fragment。 下载源码地址：http://download.csdn.net/download/shenyuanqing/9428333 效果图： 
     MainActivity.java 
        
         
         
          [java] view plain copy print ? 
         
          package com.example.administrator.wechat.activity; import android.os.Bundle; import android.support.v4.app.Fragment; import android.support.v4.app.FragmentActivity; import android.support.v4.view.ViewPager; import android.widget.RadioButton; import android.widget.RadioGroup; import com.example.administrator.wechat.R; import com.example.administrator.wechat.adapter.MyFragmentPagerAdapter; import com.example.administrator.wechat.fragment.ContactsFragment; import com.example.administrator.wechat.fragment.DiscoveryFragment; import com.example.administrator.wechat.fragment.MeFragment; import com.example.administrator.wechat.fragment.ChatFragment; import java.util.ArrayList; import java.util.List; public class MainActivity extends FragmentActivity { private ViewPager viewPager; private RadioGroup radioGroup; private RadioButton rbChat, rbContacts, rbDiscovery, rbMe; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); initView(); } private void initView() { /** * RadioGroup部分 */ radioGroup = (RadioGroup) findViewById(R.id.radioGroup); rbChat = (RadioButton) findViewById(R.id.rb_chat); rbContacts = (RadioButton) findViewById(R.id.rb_contacts); rbDiscovery = (RadioButton) findViewById(R.id.rb_discovery); rbMe = (RadioButton) findViewById(R.id.rb_me); //RadioGroup选中状态改变监听 radioGroup.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() { @Override public void onCheckedChanged(RadioGroup group, int checkedId) { switch (checkedId) { case R.id.rb_chat: /** * setCurrentItem第二个参数控制页面切换动画 * true:打开/false:关闭 */ viewPager.setCurrentItem(0, false); break; case R.id.rb_contacts: viewPager.setCurrentItem(1, false); break; case R.id.rb_discovery: viewPager.setCurrentItem(2, false); break; case R.id.rb_me: viewPager.setCurrentItem(3, false); break; } } }); /** * ViewPager部分 */ viewPager = (ViewPager) findViewById(R.id.viewPager); ChatFragment weChatFragment = new ChatFragment(); ContactsFragment contactsFragment = new ContactsFragment(); DiscoveryFragment discoveryFragment = new DiscoveryFragment(); MeFragment meFragment = new MeFragment(); List<Fragment> alFragment = new ArrayList<Fragment>(); alFragment.add(weChatFragment); alFragment.add(contactsFragment); alFragment.add(discoveryFragment); alFragment.add(meFragment); //ViewPager设置适配器 viewPager.setAdapter(new MyFragmentPagerAdapter(getSupportFragmentManager(), alFragment)); //ViewPager显示第一个Fragment viewPager.setCurrentItem(0); //ViewPager页面切换监听 viewPager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() { @Override public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) { } @Override public void onPageSelected(int position) { switch (position) { case 0: radioGroup.check(R.id.rb_chat); break; case 1: radioGroup.check(R.id.rb_contacts); break; case 2: radioGroup.check(R.id.rb_discovery); break; case 3: radioGroup.check(R.id.rb_me); break; } } @Override public void onPageScrollStateChanged(int state) { } }); } } 
        
         package com.example.administrator.wechat.activity;
    
    import android.os.Bundle;
    import android.support.v4.app.Fragment;
    import android.support.v4.app.FragmentActivity;
    import android.support.v4.view.ViewPager;
    import android.widget.RadioButton;
    import android.widget.RadioGroup;
    
    import com.example.administrator.wechat.R;
    import com.example.administrator.wechat.adapter.MyFragmentPagerAdapter;
    import com.example.administrator.wechat.fragment.ContactsFragment;
    import com.example.administrator.wechat.fragment.DiscoveryFragment;
    import com.example.administrator.wechat.fragment.MeFragment;
    import com.example.administrator.wechat.fragment.ChatFragment;
    
    import java.util.ArrayList;
    import java.util.List;
    
    
    public class MainActivity extends FragmentActivity {
        private ViewPager viewPager;
        private RadioGroup radioGroup;
        private RadioButton rbChat, rbContacts, rbDiscovery, rbMe;
    
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
    
            initView();
        }
    
        private void initView() {
            /**
             * RadioGroup部分
             */
            radioGroup = (RadioGroup) findViewById(R.id.radioGroup);
            rbChat = (RadioButton) findViewById(R.id.rb_chat);
            rbContacts = (RadioButton) findViewById(R.id.rb_contacts);
            rbDiscovery = (RadioButton) findViewById(R.id.rb_discovery);
            rbMe = (RadioButton) findViewById(R.id.rb_me);
            //RadioGroup选中状态改变监听
            radioGroup.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
                @Override
                public void onCheckedChanged(RadioGroup group, int checkedId) {
                    switch (checkedId) {
                        case R.id.rb_chat:
                            /**
                             * setCurrentItem第二个参数控制页面切换动画
                             * true:打开/false:关闭
                             */
                            viewPager.setCurrentItem(0, false);
                            break;
                        case R.id.rb_contacts:
                            viewPager.setCurrentItem(1, false);
                            break;
                        case R.id.rb_discovery:
                            viewPager.setCurrentItem(2, false);
                            break;
                        case R.id.rb_me:
                            viewPager.setCurrentItem(3, false);
                            break;
                    }
                }
            });
    
            /**
             * ViewPager部分
             */
            viewPager = (ViewPager) findViewById(R.id.viewPager);
            ChatFragment weChatFragment = new ChatFragment();
            ContactsFragment contactsFragment = new ContactsFragment();
            DiscoveryFragment discoveryFragment = new DiscoveryFragment();
            MeFragment meFragment = new MeFragment();
            List<Fragment> alFragment = new ArrayList<Fragment>();
            alFragment.add(weChatFragment);
            alFragment.add(contactsFragment);
            alFragment.add(discoveryFragment);
            alFragment.add(meFragment);
            //ViewPager设置适配器
            viewPager.setAdapter(new MyFragmentPagerAdapter(getSupportFragmentManager(), alFragment));
            //ViewPager显示第一个Fragment
            viewPager.setCurrentItem(0);
            //ViewPager页面切换监听
            viewPager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {
                @Override
                public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
    
                }
    
                @Override
                public void onPageSelected(int position) {
                    switch (position) {
                        case 0:
                            radioGroup.check(R.id.rb_chat);
                            break;
                        case 1:
                            radioGroup.check(R.id.rb_contacts);
                            break;
                        case 2:
                            radioGroup.check(R.id.rb_discovery);
                            break;
                        case 3:
                            radioGroup.check(R.id.rb_me);
                            break;
                    }
                }
    
                @Override
                public void onPageScrollStateChanged(int state) {
    
                }
            });
        }
    } activity_main.xml 
        
         
         
          [html] view plain copy print ? 
         
          <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent"> <RadioGroup android:id="@+id/radioGroup" android:layout_width="match_parent" android:layout_height="55dp" android:layout_alignParentBottom="true" android:background="@color/white" android:orientation="horizontal"> <RadioButton android:id="@+id/rb_chat" android:checked="true" android:text="@string/chat" android:drawableTop="@drawable/rb_chat_selector" style="@style/style_RadioButton"/> <RadioButton android:id="@+id/rb_contacts" android:text="@string/contacts" android:drawableTop="@drawable/rb_contacts_selector" style="@style/style_RadioButton"/> <RadioButton android:id="@+id/rb_discovery" android:text="@string/discovery" android:drawableTop="@drawable/rb_discovery_selector" style="@style/style_RadioButton"/> <RadioButton android:id="@+id/rb_me" android:text="@string/me" android:drawableTop="@drawable/rb_me_selector" style="@style/style_RadioButton"/> </RadioGroup> <android.support.v4.view.ViewPager android:id="@+id/viewPager" android:layout_width="match_parent" android:layout_height="match_parent" android:layout_above="@id/radioGroup" /> </RelativeLayout> 
        
         <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width="match_parent"
        android:layout_height="match_parent">
    
        <RadioGroup
            android:id="@+id/radioGroup"
            android:layout_width="match_parent"
            android:layout_height="55dp"
            android:layout_alignParentBottom="true"
            android:background="@color/white"
            android:orientation="horizontal">
    
            <RadioButton
                android:id="@+id/rb_chat"
                android:checked="true"
                android:text="@string/chat"
                android:drawableTop="@drawable/rb_chat_selector"
                style="@style/style_RadioButton"/>
    
            <RadioButton
                android:id="@+id/rb_contacts"
                android:text="@string/contacts"
                android:drawableTop="@drawable/rb_contacts_selector"
                style="@style/style_RadioButton"/>
    
            <RadioButton
                android:id="@+id/rb_discovery"
                android:text="@string/discovery"
                android:drawableTop="@drawable/rb_discovery_selector"
                style="@style/style_RadioButton"/>
    
            <RadioButton
                android:id="@+id/rb_me"
                android:text="@string/me"
                android:drawableTop="@drawable/rb_me_selector"
                style="@style/style_RadioButton"/>
        </RadioGroup>
    
        <android.support.v4.view.ViewPager
            android:id="@+id/viewPager"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_above="@id/radioGroup" />
    </RelativeLayout> MyFragmentPagerAdapter 
        
         
         
          [java] view plain copy print ? 
         
          package com.example.administrator.wechat.adapter; import android.support.v4.app.Fragment; import android.support.v4.app.FragmentManager; import android.support.v4.app.FragmentPagerAdapter; import java.util.List; /** * Created by Administrator on 2015/6/24. */ public class MyFragmentPagerAdapter extends FragmentPagerAdapter { private List<Fragment> list; public MyFragmentPagerAdapter(FragmentManager fm, List<Fragment> list) { super(fm); this.list = list; } @Override public Fragment getItem(int position) { return list.get(position); } @Override public int getCount() { return list.size(); } } 
        
         package com.example.administrator.wechat.adapter;
    
    import android.support.v4.app.Fragment;
    import android.support.v4.app.FragmentManager;
    import android.support.v4.app.FragmentPagerAdapter;
    
    import java.util.List;
    
    /**
     * Created by Administrator on 2015/6/24.
     */
    public class MyFragmentPagerAdapter extends FragmentPagerAdapter {
        private List<Fragment> list;
    
        public MyFragmentPagerAdapter(FragmentManager fm, List<Fragment> list) {
            super(fm);
            this.list = list;
        }
    
        @Override
        public Fragment getItem(int position) {
            return list.get(position);
        }
    
        @Override
        public int getCount() {
            return list.size();
        }
    } style.xml
    
        
         
         
          [html] view plain copy print ? 
         
          <resources>  <style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">  <item name="android:colorPrimary">@color/green</item> </style> <style name="style_RadioButton"> <item name="android:layout_width">match_parent</item> <item name="android:layout_height">wrap_content</item> <item name="android:button">@null</item> <item name="android:background">@null</item> <item name="android:layout_weight">1</item> <item name="android:gravity">center</item> <item name="android:layout_gravity">center</item> <item name="android:textColor">@drawable/rb_focus_color</item> <item name="android:textSize">12sp</item> </style> </resources>

[http_blog.csdn.net_chdjj_article_details_21564503]: http://blog.csdn.net/chdjj/article/details/21564503?utm_source=tuicool&utm_medium=referral
[ViewPager]: http://www.tuicool.com/topics/11050065
[RJnEru.png_web]: http://img1.tuicool.com/RJnEru.png!web
[3yyqqa.png_web]: /images/20220724/06f844997b5147aab36eaf7c761a6dee.png