为activity增加左右手势识别

来源：互联网发布：粉多多类似软件编辑：程序博客网时间：2024/04/30 23:21
android开发中为activity增加左右手势识别，如右滑关闭当前页面
/*  *  for左右手势  *  1.复制下面的内容到目标Activity  *  2.目标Activity的onCreate()调用initGesture()  *  3.目标Activity需implements OnTouchListener, OnGestureListener  */ private GestureDetector mGestureDetector; private int verticalMinDistance = 180; private int minVelocity         = 0;  private void initGesture() {     mGestureDetector = new GestureDetector((OnGestureListener) this); }  public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {      if (e1.getX() - e2.getX() > verticalMinDistance && Math.abs(velocityX) > minVelocity) {          // 切换Activity         // Intent intent = new Intent(ViewSnsActivity.this, UpdateStatusActivity.class);         // startActivity(intent);         //Toast.makeText(this, "向左手势", Toast.LENGTH_SHORT).show();     } else if (e2.getX() - e1.getX() > verticalMinDistance && Math.abs(velocityX) > minVelocity) {          // 切换Activity         // Intent intent = new Intent(ViewSnsActivity.this, UpdateStatusActivity.class);         // startActivity(intent);         //Toast.makeText(this, "向右手势", Toast.LENGTH_SHORT).show();         finish();         overridePendingTransition(R.anim.push_right_in, R.anim.push_right_out);     }      return false; }   @Override public void onLongPress(MotionEvent arg0) {     // TODO Auto-generated method stub       }  @Override public boolean onScroll(MotionEvent arg0, MotionEvent arg1, float arg2,         float arg3) {     // TODO Auto-generated method stub     return false; }  @Override public void onShowPress(MotionEvent arg0) {     // TODO Auto-generated method stub       }  @Override public boolean onSingleTapUp(MotionEvent arg0) {     // TODO Auto-generated method stub     return false; }  @Override public boolean onTouch(View v, MotionEvent event) {     // TODO Auto-generated method stub     return mGestureDetector.onTouchEvent(event); }  @Override public boolean onDown(MotionEvent arg0) {     // TODO Auto-generated method stub     return false; }   @Override  public boolean dispatchTouchEvent(MotionEvent ev) {     mGestureDetector.onTouchEvent(ev);     return super.dispatchTouchEvent(ev);}
1 0