在 Android 中检测到关闭键盘事件

Question

我有一个 edittext 需要像 iOS 中的文本字段一样工作。当我点击它时，它应该变成可编辑的，否则它应该被禁用。假设用户想要编辑某个值，当他按下后退按钮时，随着键盘关闭，我希望编辑文本变得无法编辑。

我只使用了 setCursorVisible(true) 和 setCursorVisible(false) 方法。我确实尝试过使用 keyCode 事件，但它们没有帮助。这是我到目前为止尝试过的：

@Override
    public void onBackPressed() {
// Had the InputMethodManager service here..
        if(imm.isAcceptingText())
        {
           Toast.makeText(ProfileActivity.this,"working",Toast.LENGTH_SHORT).show();
        }
else {
            super.onBackPressed();
            Toast.makeText(ProfileActivity.this,"back pressed called",Toast.LENGTH_SHORT).show();
        }
    }

还尝试覆盖 keyDown 事件。

@Override
    public boolean onKeyDown(int keyCode, KeyEvent event) {
        //replaces the default 'Back' button action
        if(keyCode==KeyEvent.KEYCODE_BACK)
        {

            Log.d("123","called,called");
            return  true;

        }
        return super.onKeyDown(keyCode, event);
    }

Answer 1

怎么样creating a subclass of EditText and overriding its onKeyPreIme method

/**
 * This class overrides the onKeyPreIme method to dispatch a key event if the
 * KeyEvent passed to onKeyPreIme has a key code of KeyEvent.KEYCODE_BACK.
 * This allows key event listeners to detect that the soft keyboard was
 * dismissed.
 *
 */
public class ExtendedEditText extends EditText {

    public ExtendedEditText(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);

    }

    public ExtendedEditText(Context context, AttributeSet attrs) {
        super(context, attrs);

    }

    public ExtendedEditText(Context context) {
        super(context);

    }

    @Override
    public boolean onKeyPreIme(int keyCode, KeyEvent event) {
        if (event.getKeyCode() == KeyEvent.KEYCODE_BACK) {
            dispatchKeyEvent(event);
            return false;
        }
        return super.onKeyPreIme(keyCode, event);
    }

}

在 Android 中检测到关闭键盘事件

Detect dismiss keyboard event in Android

android

android-edittext

android-softkeyboard

android-input-method