Android(安卓)UI开发第八篇——ViewFlipper 左右滑动效果

怎么实现Android主页面的左右拖动效果。其实实现起来很简单，就是使用 View Flipper来将您要来回拖动的View装在一起，然后与GestureDetector手势识别类来联动，确定要显示哪个View，加上一点点动画效果即可。
java code： public class TestFlip 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.ViewFlipper01); flipper.addView(addView(R.layout.layout1)); flipper.addView(addView(R.layout.layout2)); flipper.addView(addView(R.layout.layout3)); flipper.addView(addView(R.layout.layout4)); }
private View addView(int layout) { LayoutInflater inflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE); View view = inflater.inflate(layout, null); return view; }
@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(); 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; } }
xml code: <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent" > <ViewFlipper android:id="@+id/ViewFlipper01" android:layout_width="fill_parent" android:layout_height="fill_parent"> </ViewFlipper> </LinearLayout> http://www.devdiv.com/home.php?mod=space&uid=14682&do=blog&id=3869 /**
* @author 张兴业
* 邮箱： xy-zhang@163.com
* qq:363302850
*
*/

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