Android ViewFlipper 简单应用

今天药忘吃喽~ 2023-10-17 09:57 111阅读 0赞

### Android ViewFlipper 简单应用 ###

废话不多说，直接看代码

##### activity\_guide.xml #####

<?xml version="1.0" encoding="utf-8"?>
    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:tools="http://schemas.android.com/tools"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:id="@+id/guide"
     tools:context="com.example.weijian.homeletterapplication.GuideActivity">
    
        <ViewFlipper
            android:id="@+id/Main_ViewFlipper"
            android:layout_width="match_parent"
            android:layout_height="match_parent" >
        </ViewFlipper>
    
    </LinearLayout>

##### GuideActivity.java #####

import android.content.Intent;
    import android.support.v7.app.ActionBar;
    import android.support.v7.app.AppCompatActivity;
    import android.os.Bundle;
    import android.view.GestureDetector;
    import android.view.MotionEvent;
    import android.view.View;
    import android.view.WindowManager;
    import android.widget.ImageView;
    import android.widget.ViewFlipper;
    
    public class GuideActivity extends AppCompatActivity implements GestureDetector.OnGestureListener {
        
    
        private GestureDetector detector;
        private ViewFlipper flipper; 
    
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_guide);
            //隐藏标题栏
            ActionBar actionBar = getSupportActionBar();
            actionBar.hide();
    
            detector = new GestureDetector(this);
            flipper = (ViewFlipper) this.findViewById(R.id.Main_ViewFlipper);
            flipper.addView(addImageView(R.mipmap.guide1));
            flipper.addView(addImageView(R.mipmap.guide2));
            flipper.addView(addImageView(R.mipmap.guide3)); 
        }
    
        private View addImageView(int id) {
            ImageView iv = new ImageView(this); 
            //ImageView拉伸，充满整个ViewFlipper
            iv.setScaleType(ImageView.ScaleType.FIT_XY);
            iv.setImageResource(id);
            return iv;
        }
    
        @Override
        public boolean onTouchEvent(MotionEvent event) {
            // TODO Auto-generated method stub
            return this.detector.onTouchEvent(event);
        }
    
        @Override
        public boolean onDown(MotionEvent e) {
            // TODO Auto-generated method stub 
            return false;
        }
    
        @Override
        public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,
                               float velocityY) { 
            if (e1.getX() - e2.getX() > 120) {
                this.flipper.showNext();
            }
            if (e1.getX() - e2.getX() < -120) {
                this.flipper.showPrevious();
            }
            return false;
        }
    
        @Override
        public void onLongPress(MotionEvent e) {
            // TODO Auto-generated method stub
        }
    
        @Override
        public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX,
                                float distanceY) {
            // TODO Auto-generated method stub
            return false;
        }
    
        @Override
        public void onShowPress(MotionEvent e) {
            // TODO Auto-generated method stub
        }
    
        @Override
        public boolean onSingleTapUp(MotionEvent e) {
            // TODO Auto-generated method stub
            return false;
        }
    
    }