首先给大家介绍一下手势：
接下来给大家上一段左右滑动更换图片的代码：
xml部分：
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" tools:context="com.example.gesture.MainActivity"> <ViewFlipper android:layout_width="match_parent" android:layout_height="match_parent" android:id="@+id/vf_main_view" > </ViewFlipper> </LinearLayout> java部分： package com.example.gesture; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.util.Log; 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 vf; private int images[]={R.drawable.s1,R.drawable.s2,R.drawable.s3}; private GestureDetector gd; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); vf = (ViewFlipper) findViewById(R.id.vf_main_view); for (int i = 0; i < images.length; i++) { ImageView iv=new ImageView(this); iv.setImageResource(images[i]); vf.addView(iv); } //实例化手势检测器类 gd = new GestureDetector(this, new GestureDetector.OnGestureListener() { @Override public boolean onDown(MotionEvent e) { Log.i("text","按下"); return false; } @Override public void onShowPress(MotionEvent e) { Log.i("text","按下,但还未抬起"); } @Override public boolean onSingleTapUp(MotionEvent e) { Log.i("text","轻按，按一下，立刻抬起"); return false; } @Override public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX, float distanceY) { Log.i("text","滚动"); return false; } @Override public void onLongPress(MotionEvent e) { Log.i("text","长按"); } @Override public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) { Log.i("text","拖动"); if(e2.getX()-e1.getX()>200){ Toast.makeText(MainActivity.this, "右滑，上一张", Toast.LENGTH_SHORT).show(); vf.showPrevious(); //左进右出 vf.setInAnimation(MainActivity.this,R.anim.left_in); vf.setInAnimation(MainActivity.this,R.anim.right_out); } if(e1.getX()-e2.getX()>200){ Toast.makeText(MainActivity.this, "左滑，下一张", Toast.LENGTH_SHORT).show(); vf.showNext(); //左进右出 vf.setInAnimation(MainActivity.this,R.anim.left_out); vf.setInAnimation(MainActivity.this,R.anim.right_in); } return false; } }); } @Override public boolean onTouchEvent(MotionEvent event) { return gd.onTouchEvent(event); } } anim部分：
left_in.xml:
<?xml version="1.0" encoding="utf-8"?> <set xmlns:android="http://schemas.android.com/apk/res/android" android:duration="1000" android:fillAfter="true" > <translate android:fromXDelta="100%p" android:toXDelta="0" ></translate> <rotate android:fromDegrees="100%p" android:toDegrees="0" android:pivotY="50%" android:pivotX="50%" ></rotate> </set> left_out: <?xml version="1.0" encoding="utf-8"?> <set xmlns:android="http://schemas.android.com/apk/res/android" android:duration="1000" android:fillAfter="true" > <translate android:fromXDelta="0" android:toXDelta="100%p" ></translate> <rotate android:fromDegrees="0" android:toDegrees="360" android:pivotX="50%" android:pivotY="50%" ></rotate> </set> right_in: <?xml version="1.0" encoding="utf-8"?> <set xmlns:android="http://schemas.android.com/apk/res/android" android:duration="1000" android:fillAfter="true" > <translate android:fromXDelta="100%p" android:toXDelta="0" ></translate> <rotate android:fromDegrees="0" android:toDegrees="360" android:pivotY="50%" android:pivotX="50%" ></rotate> </set> right_out: <?xml version="1.0" encoding="utf-8"?> <set xmlns:android="http://schemas.android.com/apk/res/android" android:duration="1000" android:fillAfter="true" > <!--左进--> <translate android:fromXDelta="0" android:toXDelta="100%p" > </translate> <rotate android:fromDegrees="0" android:toDegrees="360" android:pivotX="50%" android:pivotY="50%" ></rotate> </set>