Android ViewFlipper简单用法解析

ViewFlipper和ViewPager挺像的，都是一个view容器。内部可以添加多个view，只是viewpager可以通过左右滑动来切换view，而viewFlipper则没有这个功能，所以需要在它上面监听手势。比较方便的是它不用使用适配器就能添加view，所以比较方便。

首先在布局文件中定义这个控件： 

2.在代码中找到并且添加view 

  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    detector = new GestureDetector(this);
    flipper = (ViewFlipper) this.findViewById(R.id.ViewFlipper01);

    flipper.addView(addTextView("page 1"));//添加view到flipper中，这里添加5个textView
    flipper.addView(addTextView("page 2"));
    flipper.addView(addTextView("page 3"));
    flipper.addView(addTextView("page 4"));
    flipper.addView(addTextView("page 5"));
  }



  private View addTextView(String text) {
    TextView tv = new TextView(this);
    tv.setText(text);
    tv.setTextSize(40);
    tv.setTextColor(0xff000000);
    tv.setGravity(Gravity.CENTER);
    return tv;
  }

3.通过touch监听手势来切换view 

@Override
  public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,
      float velocityY) {
    if (e1.getX() - e2.getX() > 120) {
      this.flipper.setInAnimation(AnimationUtils.loadAnimation(this, R.anim.push_left_in));
      this.flipper.setOutAnimation(AnimationUtils.loadAnimation(this, R.anim.push_left_out));
      this.flipper.showNext();//切换到下一个view
      return true;
    } else if (e1.getX() - e2.getX() < -120) {
      this.flipper.setInAnimation(AnimationUtils.loadAnimation(this, R.anim.push_right_in));
      this.flipper.setOutAnimation(AnimationUtils.loadAnimation(this, R.anim.push_right_out));
      this.flipper.showPrevious();
      return true;
    }
    return false;
  }

下面是Activity的完整代码： 

package com.xu81.testflip;

import android.app.Activity;
import android.app.ActivityManager.RecentTaskInfo;
import android.os.Bundle;
import android.view.GestureDetector;
import android.view.Gravity;
import android.view.MotionEvent;
import android.view.View;
import android.view.GestureDetector.OnGestureListener;
import android.view.animation.AnimationUtils;
import android.widget.TextView;
import android.widget.ViewFlipper;

public class TestFlip extends Activity implements onGestureListener {

  private ViewFlipper flipper;

  private GestureDetector detector;

  
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    detector = new GestureDetector(this);
    flipper = (ViewFlipper) this.findViewById(R.id.ViewFlipper01);

    flipper.addView(addTextView("page 1"));//添加view到flipper中，这里添加5个textView
    flipper.addView(addTextView("page 2"));
    flipper.addView(addTextView("page 3"));
    flipper.addView(addTextView("page 4"));
    flipper.addView(addTextView("page 5"));
  }

  
  private View addTextView(String text) {
    TextView tv = new TextView(this);
    tv.setText(text);
    tv.setTextSize(40);
    tv.setTextColor(0xff000000);
    tv.setGravity(Gravity.CENTER);
    return tv;
  }

  @Override
  public boolean onTouchEvent(MotionEvent event) {
    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.setInAnimation(AnimationUtils.loadAnimation(this, R.anim.push_left_in));
      this.flipper.setOutAnimation(AnimationUtils.loadAnimation(this, R.anim.push_left_out));
      this.flipper.showNext();//切换到下一个view
      return true;
    } else if (e1.getX() - e2.getX() < -120) {
      this.flipper.setInAnimation(AnimationUtils.loadAnimation(this, R.anim.push_right_in));
      this.flipper.setOutAnimation(AnimationUtils.loadAnimation(this, R.anim.push_right_out));
      this.flipper.showPrevious();
      return true;
    }
    return false;
  }

  @Override
  public void onLongPress(MotionEvent e) {
    // TODO 自动生成的方法存根
    
  }

  @Override
  public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX,
      float distanceY) {
    // TODO 自动生成的方法存根
    return false;
  }

  @Override
  public void onShowPress(MotionEvent e) {
    // TODO 自动生成的方法存根
    
  }

  @Override
  public boolean onSingleTapUp(MotionEvent e) {
    // TODO 自动生成的方法存根
    return false;
  }


}

动画文件： 

push_left_in.xml 

push_left_out.xml 

push_right_in.xml 

push_right_out.xml 

源码下载：http://xiazai.jb51.net/201609/yuanma/AndroidViewFlip(jb51.net).rar

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