Android ViewFlipper简单应用

<?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>

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;  }}