Question

Android上这种布局和联动的滑动效果是怎么做到的

Answer 1

实现思路简介：viewpager是全屏的，所有页面共用的header，根据当前页面listview或者scrollview的滑动距离设置translationY；切换tab时，根据当前header的高度调整下一个tab页面的滚动距离。缺点：封面上有很多响应时，需要自己进行手势处理

给点提示：
　MainActivity文件中代码：
package com.android.flip;

import android.app.Activity;
import android.os.Bundle;
import android.view.GestureDetector;
import android.view.MotionEvent;
import android.view.View;
import android.view.GestureDetector.OnGestureListener;
import android.view.animation.AnimationUtils;
import android.widget.ImageView;
import android.widget.ViewFlipper;

/**
* Android实现左右滑动效果
* @Description: Android实现左右滑动效果

* @File: MainActivity.java

* @Package com.android.flip

* @Author Hanyonglu

* @Date 2012-02-12 上午10:44:04

* @Version V1.0
*/
public class MainActivity extends Activity implements OnGestureListener {
private ViewFlipper flipper;
private GestureDetector detector;

/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);

detector = new GestureDetector(this);
flipper = (ViewFlipper) this.findViewById(R.id.ViewFlipper1);

flipper.addView(addImageView(R.drawable.one));
flipper.addView(addImageView(R.drawable.two));
flipper.addView(addImageView(R.drawable.three));
flipper.addView(addImageView(R.drawable.four));
flipper.addView(addImageView(R.drawable.five));
}

private View addImageView(int id) {
ImageView iv = new ImageView(this);
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.setInAnimation(AnimationUtils.loadAnimation(this, R.anim.push_left_in));
this.flipper.setOutAnimation(AnimationUtils.loadAnimation(this, R.anim.push_left_out));
this.flipper.showNext();
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 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;
}
}