Android阻止键盘关闭

Question

是否可以阻止用户关闭软键盘。换句话说，当我的活动可见时，屏幕上可以使用键盘（在任何时候）。这可能吗？如果是这样，你会如何实现它？

Answer 1

您需要覆盖以下onKeyUp()和onKeyDown()方法，

@Override
public boolean onKeyUp(int keyCode, KeyEvent event) {
    if (keyCode == KeyEvent.KEYCODE_BACK)     
    {
        ((InputMethodManager)getSystemService(Context.INPUT_METHOD_SERVICE)).toggleSoftInput
                (InputMethodManager.SHOW_FORCED,InputMethodManager.HIDE_IMPLICIT_ONLY);
    }
    return super.onKeyUp(keyCode, event);
}

@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
    if (keyCode == KeyEvent.KEYCODE_BACK)     
    {
        ((InputMethodManager)getSystemService(Context.INPUT_METHOD_SERVICE)).toggleSoftInput
                (InputMethodManager.SHOW_FORCED, InputMethodManager.HIDE_IMPLICIT_ONLY);
    }
    return super.onKeyDown(keyCode, event);
}

您也可以尝试使用OnEditorActionListener，使用EditText txtMyEdit = (EditText) findViewById(R.id.txtEdit); txtMyEdit.setOnEditorActionListener(new OnEditorActionListener() { public boolean onEditorAction(TextView v, int actionId, KeyEvent event) { if (actionId == EditorInfo.IME_ACTION_DONE) { // your additional processing... return true; } else { return false; } } }); ，查看以下代码，

{{1}}

Answer 2

这会强制键盘显示而不管焦点如何：

InputMethodManager imm = (InputMethodManager)getSystemService(Context.INPUT_METHOD_SERVICE);
imm.hideSoftInputFromWindow(yourViewObject.getWindowToken(), 0);
imm.toggleSoftInput(InputMethodManager.SHOW_FORCED,0);