向下滑动时隐藏android键盘

如何在向下滑动时隐藏android键盘？我想，若键盘是打开的，若用户在屏幕上向下滑动，那个么键盘应该隐藏起来。我如何做到这一点？

您需要在视图中实现onTouchListener，然后在向下滚动事件中使键盘像这样隐藏

/**
     * Hide Keyboard
     *
     * @param activity
     */
    public static void hideKeyboard(Activity activity) {
        // Check if no view has focus:
        try {
            View view = activity.getCurrentFocus();
            if (view != null) {
                InputMethodManager inputManager = (InputMethodManager) activity.getSystemService(Context.INPUT_METHOD_SERVICE);
                inputManager.hideSoftInputFromWindow(view.getWindowToken(), InputMethodManager.HIDE_NOT_ALWAYS);
            }
        }catch (Exception e){

        }
    }

OnSwipeTouchListener.java：

用法：

imageView.setOnTouchListener(new OnSwipeTouchListener(MyActivity.this) {
    public void onSwipeTop() {
        Toast.makeText(MyActivity.this, "top", Toast.LENGTH_SHORT).show();
    }
    public void onSwipeRight() {
        Toast.makeText(MyActivity.this, "right", Toast.LENGTH_SHORT).show();
    }
    public void onSwipeLeft() {
        Toast.makeText(MyActivity.this, "left", Toast.LENGTH_SHORT).show();
    }
    public void onSwipeBottom() {
        Toast.makeText(MyActivity.this, "bottom", Toast.LENGTH_SHORT).show();
    }

});

---

您可以使用

SimpleOnGestureListener（）

并覆盖它的

onFling（）

方法来检测刷卡。对于向下滑动，您可以将

MotionEvent

的Y增量与灵敏度进行比较

  public static void hideKeyboard(Activity activity) {
        // Check if no view has focus:
        try {
            View view = activity.getCurrentFocus();
            if (view != null) {
                InputMethodManager inputManager = (InputMethodManager) activity.getSystemService(Context.INPUT_METHOD_SERVICE);
                inputManager.hideSoftInputFromWindow(view.getWindowToken(), InputMethodManager.HIDE_NOT_ALWAYS);
            }
        }catch (Exception e){

        }
    }

     SimpleOnGestureListener simpleOnGestureListener = new SimpleOnGestureListener() {
      @Override
      public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,
        float velocityY) {

       float sensitivity = 50; //suit yourself

       // TODO Auto-generated method stub

       if((e2.getY() - e1.getY()) > sensitivity){
        //swiped down, now do whatever you want.
        hideKeyboard();
       }
      }
     }

---

如何从调用HideKeyboard方法的位置从上到下获取滑动事件？我试过使用OnTouchEvent，但没有working@anand我编辑了我的答案，请检查并让我知道谢谢你的回答。现在它开始工作了。在xamarin中，我们有DispatchTouchEvent，我们调用它来获取touch事件。现在，每当用户刷卡时，键盘都会关闭。@A很高兴它能帮助您。请接受它作为答案并投票表决。谢谢

  public static void hideKeyboard(Activity activity) {
        // Check if no view has focus:
        try {
            View view = activity.getCurrentFocus();
            if (view != null) {
                InputMethodManager inputManager = (InputMethodManager) activity.getSystemService(Context.INPUT_METHOD_SERVICE);
                inputManager.hideSoftInputFromWindow(view.getWindowToken(), InputMethodManager.HIDE_NOT_ALWAYS);
            }
        }catch (Exception e){

        }
    }

     SimpleOnGestureListener simpleOnGestureListener = new SimpleOnGestureListener() {
      @Override
      public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,
        float velocityY) {

       float sensitivity = 50; //suit yourself

       // TODO Auto-generated method stub

       if((e2.getY() - e1.getY()) > sensitivity){
        //swiped down, now do whatever you want.
        hideKeyboard();
       }
      }
     }