Android 開發：ViewFlipper 左右滑動效果
怎么實現Android主頁面的左右拖動效果。其實實現起來很簡單，就是使用ViewFlipper來將您要來回拖動的View裝在一起，然后與GestureDetector手勢識別類來聯動，確定要顯示哪個View，加上一點點動畫效果即可。
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;
}
} </pre>
<?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>