Android学习笔记之 ViewFlipper UI的简单用法

这是一个左右滑动的效果，这里以切换图片为例。
  1 public class ViewFlipper_Main extends Activity implements OnGestureListener {
  2 
  3     private ViewFlipper vFlipper;
  4     private GestureDetector gDetector;
  5 
  6     @Override
  7     protected void onCreate(Bundle savedInstanceState) {
  8         super.onCreate(savedInstanceState);
  9         setContentView(R.layout.viewflipper_activity);
 10 
 11         vFlipper = (ViewFlipper) this.findViewById(R.id.vFlipper);
 12         gDetector = new GestureDetector(this);
 13 
 14         Bitmap bitmap = BitmapFactory.decodeResource(getResources(),
 15                 R.drawable.test1);
 16         Bitmap bitmap1 = BitmapFactory.decodeResource(getResources(),
 17                 R.drawable.test2);
 18         Bitmap bitmap2 = BitmapFactory.decodeResource(getResources(),
 19                 R.drawable.test3);
 20 
 21         vFlipper.addView(addImgView(bitmap));
 22         vFlipper.addView(addImgView(bitmap1));
 23         vFlipper.addView(addImgView(bitmap2));
 24 
 25     }
 26 
 27     public View addImgView(Bitmap bm) {
 28         ImageView imageView = new ImageView(this);
 29         imageView.setImageBitmap(bm);
 30         return imageView;
 31     }
 32 
 33 
 34     @Override
 35     public boolean onCreateOptionsMenu(Menu menu) {
 36         // Inflate the menu; this adds items to the action bar if it is present.
 37         getMenuInflater().inflate(R.menu.view_flipper__main, menu);
 38         return true;
 39     }
 40 
 41     @Override
 42     public boolean onTouchEvent(MotionEvent event) {
 43         // TODO Auto-generated method stub
 44         // return super.onTouchEvent(event);
 45         return this.gDetector.onTouchEvent(event);
 46     }
 47 
 48     @Override
 49     public boolean onDown(MotionEvent e) {
 50         // TODO Auto-generated method stub
 51         return false;
 52     }
 53 
 54     @Override
 55     public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,
 56             float velocityY) {
 57         // TODO Auto-generated method stub
 58         if (e1.getX() - e2.getX() > 120) {
 59             this.vFlipper.setInAnimation(AnimationUtils.loadAnimation(this,
 60                     R.anim.push_left_in));
 61             this.vFlipper.setOutAnimation(AnimationUtils.loadAnimation(this,
 62                     R.anim.push_left_out));
 63             this.vFlipper.showNext();
 64             return true;
 65         } else if (e1.getX() - e2.getX() < -120) {
 66             this.vFlipper.setInAnimation(AnimationUtils.loadAnimation(this,
 67                     R.anim.push_right_in));
 68             this.vFlipper.setOutAnimation(AnimationUtils.loadAnimation(this,
 69                     R.anim.push_right_out));
 70             this.vFlipper.showPrevious();
 71             return true;
 72         }
 73         return true;
 74 
 75     }
 76 
 77     @Override
 78     public void onLongPress(MotionEvent e) {
 79         // TODO Auto-generated method stub
 80 
 81     }
 82 
 83     @Override
 84     public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX,
 85             float distanceY) {
 86         // TODO Auto-generated method stub
 87         return false;
 88     }
 89 
 90     @Override
 91     public void onShowPress(MotionEvent e) {
 92         // TODO Auto-generated method stub
 93 
 94     }
 95 
 96     @Override
 97     public boolean onSingleTapUp(MotionEvent e) {
 98         // TODO Auto-generated method stub
 99         return false;
100     }
101 
102 }
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