代码实现：
package com.example.g160628_android_20_gesture; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.view.GestureDetector; import android.view.MotionEvent; import android.widget.ImageView; import android.widget.Toast; import android.widget.ViewFlipper; public class MainActivity extends AppCompatActivity { private ViewFlipper viewFlipper; private int image[]={R.drawable.b,R.drawable.c,R.drawable.d}; private GestureDetector gd; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); viewFlipper = (ViewFlipper) findViewById(R.id.vf_main_ViewFlipper); //循环添加图片 for (int i = 0; i < image.length; i++) { ImageView img = new ImageView(this); img.setImageResource(image[i]); viewFlipper.addView(img); } gd = new GestureDetector(this, new GestureDetector.OnGestureListener() { //按下 @Override public boolean onDown(MotionEvent e) { return false; } //按下 但是还未抬起 @Override public void onShowPress(MotionEvent e) { } //轻按，按一下立刻抬起 @Override public boolean onSingleTapUp(MotionEvent e) { return false; } //滚动 @Override public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX, float distanceY) { return false; } //长按 @Override public void onLongPress(MotionEvent e) { } //拖动 @Override public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) { if(e2.getX()-e1.getX()>200){ Toast.makeText(MainActivity.this, "右滑,上一张", Toast.LENGTH_SHORT).show(); viewFlipper.showPrevious(); //左进右出（实现特效）外部资源 viewFlipper.setInAnimation(MainActivity.this,R.anim.right_out); viewFlipper.setOutAnimation(MainActivity.this,R.anim.left_in); } if(e1.getX()-e2.getX()>200){ Toast.makeText(MainActivity.this, "左滑,下一张", Toast.LENGTH_SHORT).show(); viewFlipper.showNext(); //左出右进（实现特效）外部资源 viewFlipper.setOutAnimation(MainActivity.this,R.anim.left_out); viewFlipper.setInAnimation(MainActivity.this,R.anim.right_in); } return false; } }); } @Override public boolean onTouchEvent(MotionEvent event) { return gd.onTouchEvent(event); } }引用的外部资源有四个特效 在res文件夹下新建文件夹anim（在anim文件夹内写外部资源）
实现图片上一张外部资源： left_in.xml
<?xml version="1.0" encoding="utf-8"?> <set xmlns:android="http://schemas.android.com/apk/res/android" android:fillAfter="true" android:duration="1000" > <translate android:fromXDelta="-100%p" android:toXDelta="0" ></translate> <rotate android:fromDegrees="0" android:toDegrees="360" android:pivotX="50%" android:pivotY="50%" ></rotate> </set>right_out.xml
<?xml version="1.0" encoding="utf-8"?> <set xmlns:android="http://schemas.android.com/apk/res/android" android:fillAfter="true" android:duration="1000" > <translate android:fromXDelta="0" android:toXDelta="100%p" ></translate> <rotate android:fromDegrees="0" android:toDegrees="360" android:pivotX="50%" android:pivotY="50%" ></rotate> </set>实现图片下一张外部资源：
left_out.xml
<?xml version="1.0" encoding="utf-8"?> <set xmlns:android="http://schemas.android.com/apk/res/android" android:fillAfter="true" android:duration="1000" > <translate android:fromXDelta="0" android:toXDelta="-100%p"> </translate> <rotate android:pivotX="50%" android:pivotY="50%" android:fromDegrees="0" android:toDegrees="-360"></rotate> </set>right_in.xml
<?xml version="1.0" encoding="utf-8"?> <set xmlns:android="http://schemas.android.com/apk/res/android" android:fillAfter="true" android:duration="1000" > <translate android:fromXDelta="100" android:toXDelta="0"> </translate> <rotate android:pivotX="50%" android:pivotY="50%" android:fromDegrees="0" android:toDegrees="-360"></rotate> </set>