检测在Android中关闭键盘事件

Question

我有一个需要像iOS中的文本字段一样运行的edittext.当我点击它时,应该可以编辑,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,我希望编辑文本被禁用以进行编辑.

我正在使用的是setCursorVisible(true)和setCursorVisible(false)方法.我确实尝试过使用keyCode事件,但他们没有帮助.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();
        }
    }

还尝试重写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

如何创建EditText的子类并重写其onKeyPreIme方法

/**
 * 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);
    }

}