Android 实例讲解HorizontalScrollView实现左右滑动

布满荆棘的人生 2022-08-10 14:47 432阅读 0赞

本博文主要讲解怎么使用HorizontalScrollView实现左右滑动的效果。  
HorizontalScrollView实际上是一个FrameLayout ，一般通过只放置一个LinearLayout子控件。如果要使其添加其他的控件，就使用LinearLayout子控件来添加其他的控件，最后达到丰富其内容的效果。其中，LinearLayout设置的orientation布局为Horizontal.HorizontalScrollView不可以和ListView同时用，因为ListView有自己的滚动条设置。类似TextView也一样。  
下面通过一个实际的实例来讲解HorizontalScrollView:

1.效果：

![Center][]

2.实现代码

需求分析：主要实现一个父LinearLayout中包含代码创建的10个子LinearLayout,而每个子LinearLayout添加一个ImageView和TextView,超出的部分实现左右滑动

activity\_main.xml

MainActivity.java

package com.example.horizontalscrollviewdemo;
    
    import android.app.Activity;
    import android.os.Bundle;
    import android.view.Gravity;
    import android.view.Menu;
    import android.view.MenuItem;
    import android.view.View;
    import android.view.View.OnClickListener;
    import android.view.ViewGroup.LayoutParams;
    import android.widget.HorizontalScrollView;
    import android.widget.ImageView;
    import android.widget.LinearLayout;
    import android.widget.TextView;
    import android.widget.Toast;
    
    public class MainActivity extends Activity {
    
    	private HorizontalScrollView scrollView;
    	private LinearLayout linear;
    
    	@Override
    	protected void onCreate(Bundle savedInstanceState) {
    		super.onCreate(savedInstanceState);
    		setContentView(R.layout.activity_main);
    
    		scrollView = (HorizontalScrollView) this.findViewById(R.id.scroll_view);
    		linear = (LinearLayout) this.findViewById(R.id.linear);
    		createChildLinearLayout();
    	}
    
    	private void createChildLinearLayout() {
    		for (int i = 0; i < 10; i++) {
    			LinearLayout.LayoutParams linearLp = new LinearLayout.LayoutParams(
    					LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
    			LinearLayout myLinear = new LinearLayout(this);
    			linearLp.setMargins(5, 0, 5, 20);
    			myLinear.setOrientation(LinearLayout.VERTICAL);
    			myLinear.setTag(i);
    			linear.addView(myLinear, linearLp);
    
    			LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(
    					LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
    			ImageView imageView = new ImageView(this);
    			imageView.setBackgroundResource(R.drawable.img);
    			myLinear.addView(imageView, lp);
    
    			LinearLayout.LayoutParams textViewLp = new LinearLayout.LayoutParams(
    					LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT);
    			TextView textView = new TextView(this);
    			textView.setText(i + "");
    			textView.setGravity(Gravity.CENTER);
    			myLinear.addView(textView, textViewLp);
    
    			myLinear.setOnClickListener(new OnClickListener() {
    
    				@Override
    				public void onClick(View v) {
    					// TODO Auto-generated method stub
    					Toast.makeText(MainActivity.this, v.getTag().toString(),
    							Toast.LENGTH_SHORT).show();
    				}
    			});
    		}
    	}
    
    	@Override
    	public boolean onCreateOptionsMenu(Menu menu) {
    
    		// Inflate the menu; this adds items to the action bar if it is present.
    		getMenuInflater().inflate(R.menu.main, menu);
    		return true;
    	}
    
    	@Override
    	public boolean onOptionsItemSelected(MenuItem item) {
    		// Handle action bar item clicks here. The action bar will
    		// automatically handle clicks on the Home/Up button, so long
    		// as you specify a parent activity in AndroidManifest.xml.
    		int id = item.getItemId();
    		if (id == R.id.action_settings) {
    			return true;
    		}
    		return super.onOptionsItemSelected(item);
    	}
    }

以上为本博客所讲内容。

[Center]: /images/20220810/041daf0cac6b4eaebfcbfd854476850a.png