Android ViewFlipper实现多个布局手势切换的效果

这里用到了前面学过的 手势效果，如果对手势还是不很了解的话可以去看一下这篇文章 Android使用GestureDetector实现手势滑动效果 先看一下布局文件 activity_main.xml

布局文件很简单，在ViewFlipper中包含了三个布局，全部用背景颜色区分。 再看一下MainActivity.java

package com.example.viewflipper;

import android.os.Bundle;
import android.app.Activity;
import android.view.GestureDetector;
import android.view.GestureDetector.OnGestureListener;
import android.view.Menu;
import android.view.MotionEvent;
import android.widget.Toast;
import android.widget.ViewFlipper;

public class MainActivity extends Activity implements OnGestureListener {

private GestureDetector mGestureDetector;
private ViewFlipper mViewFlipper = null;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mGestureDetector = new GestureDetector(this, this);
mViewFlipper = (ViewFlipper) findViewById(R.id.viewFlipper1);
}

@Override
public boolean onTouchEvent(MotionEvent event) {
// TODO Auto-generated method stub
mGestureDetector.onTouchEvent(event);
return super.onTouchEvent(event);
}

@Override
public boolean onDown(MotionEvent arg0) {
// TODO Auto-generated method stub
// Toast.makeText(this, "onDown", Toast.LENGTH_SHORT).show();
return false;
}

@Override
public boolean onFling(MotionEvent startEvent, MotionEvent endEvent,
float velocityX, float velocityY) {
// TODO Auto-generated method stub
if (startEvent.getY() - endEvent.getY() > 100) {
Toast.makeText(this, "手势向上滑动", Toast.LENGTH_SHORT).show();
return true;
} else if (startEvent.getY() - endEvent.getY() < -100) {
Toast.makeText(this, "手势向下滑动", Toast.LENGTH_SHORT).show();
return true;
} else if (startEvent.getX() - endEvent.getX() > 100) {
Toast.makeText(this, "手势向左滑动", Toast.LENGTH_SHORT).show();
mViewFlipper.showNext();
return true;
} else if (startEvent.getX() - endEvent.getX() < -100) {
Toast.makeText(this, "手势向右滑动", Toast.LENGTH_SHORT).show();
mViewFlipper.showPrevious();
return true;
}
return false;
}

@Override
public void onLongPress(MotionEvent arg0) {
// TODO Auto-generated method stub
// Toast.makeText(this, "onLongPress ", Toast.LENGTH_SHORT).show();
}

@Override
public boolean onScroll(MotionEvent arg0, MotionEvent arg1, float arg2,
float arg3) {
// TODO Auto-generated method stub
// Toast.makeText(this, "onScroll", Toast.LENGTH_SHORT).show();
return false;
}

@Override
public void onShowPress(MotionEvent arg0) {
// TODO Auto-generated method stub
// Toast.makeText(this, "onShowPress", Toast.LENGTH_SHORT).show();
}

@Override
public boolean onSingleTapUp(MotionEvent arg0) {
// TODO Auto-generated method stub
// Toast.makeText(this, "onSingleTapUp", Toast.LENGTH_SHORT).show();
return false;
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.activity_main, menu);
return true;
}

}

这样就可以实现最简单的切换效果了。