问题描述

我只想在edittext"外部单击时自动失去焦点并隐藏键盘.目前，如果我点击edittext"它会聚焦，但我需要点击后退按钮才能取消聚焦.

I just want when click outside the "edittext" to automatically lose focus and hide keyboard. At the moment, if I click on the "edittext" it focuses but i need to hit the back button to unfocus.

推荐答案

要解决这个问题，首先要使用 Edittext 的 setOnFocusChangeListener

To solve this problem what you have to do is first use setOnFocusChangeListener of that Edittext

edittext.setOnFocusChangeListener(new View.OnFocusChangeListener() {
            @Override
            public void onFocusChange(View v, boolean hasFocus) {
                if (!hasFocus) {
                    Log.d("focus", "focus lost");
                    // Do whatever you want here
                } else {
                    Log.d("focus", "focused");
                }
            }
        });

然后您需要做的是在包含 Edittext 的活动中覆盖 dispatchTouchEvent，请参见下面的代码

and then what you need to do is override dispatchTouchEvent in the activity which contains that Edittext see below code

@Override
    public boolean dispatchTouchEvent(MotionEvent event) {
        if (event.getAction() == MotionEvent.ACTION_DOWN) {
            View v = getCurrentFocus();
            if ( v instanceof EditText) {
                Rect outRect = new Rect();
                v.getGlobalVisibleRect(outRect);
                if (!outRect.contains((int)event.getRawX(), (int)event.getRawY())) {
                    Log.d("focus", "touchevent");
                    v.clearFocus();
                    InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
                    imm.hideSoftInputFromWindow(v.getWindowToken(), 0);
                }
            }
        }
        return super.dispatchTouchEvent(event);
    }

现在会发生什么，当用户点击外部时，首先会调用这个 dispatchTouchEvent，然后从 editext 清除焦点，现在你的 OnFocusChangeListener 将被调用，焦点已经改变，现在你可以做任何你想做的事情想做，希望有效:)

Now what will happen is when a user click outside then, firstly this dispatchTouchEvent will get called which then will clear focus from the editext, now your OnFocusChangeListener will get called that focus has been changed, now here you can do anything which you wanted to do, hope it works :)

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