Android

Question

有没有办法只打开软键盘，而无需实际对话框或输入字段，并以字符串形式获取输入值？键盘本身已经有一个“完成”按钮；我可以只：按下一个按钮，键盘打开它自己的内置输入框，输入值，按“完成”，在一个变量中得到结果。

Answer 1

我会添加一个 editText 使其不可见并将焦点放在它上面。要明确显示它：

editText = (EditText)findViewById(R.id.myTextViewId);
editText.requestFocus();
InputMethodManager imm = (InputMethodManager)getSystemService(this.INPUT_METHOD_SERVICE);
imm.toggleSoftInput(InputMethodManager.SHOW_FORCED,InputMethodManager.HIDE_IMPLICIT_ONLY);

再隐藏起来

InputMethodManager imm = (InputMethodManager)   getSystemService(this.INPUT_METHOD_SERVICE);
imm.hideSoftInputFromWindow(editText.getWindowToken(), 0);

Answer 2

我设计了一个不同的解决方案，灵感来自 Tobias 的建议加上 this answer。我创建了一个带有 EditText 的 AlertDialog 弹出窗口。然后我在编辑文本中添加了一个延迟的“触摸”以打开软键盘，然后处理“完成”事件以获取输入值并关闭底层弹出窗口。这是一些示例代码：

//Open an AlertDialog popup
AlertDialog.Builder builder = new AlertDialog.Builder(activity);

//create a simple EditText
final EditText input = new EditText(activity);
input.setInputType(InputType.TYPE_CLASS_NUMBER);
input.setImeOptions(EditorInfo.IME_ACTION_DONE);
builder.setView(input);

//touch into the EditText to open the softkeyboard (600ms delay)
new Handler().postDelayed(new Runnable() {
    public void run() {
        input.dispatchTouchEvent(MotionEvent.obtain(SystemClock.uptimeMillis(), SystemClock.uptimeMillis(), MotionEvent.ACTION_DOWN , 0, 0, 0));
        input.dispatchTouchEvent(MotionEvent.obtain(SystemClock.uptimeMillis(), SystemClock.uptimeMillis(), MotionEvent.ACTION_UP , 0, 0, 0));
    }
}, 600);


alertDialog = builder.show();
AlertDialog finalAlertDialog = alertDialog;

//Handle Keyboard event to get value and close the popup
input.setOnEditorActionListener(new TextView.OnEditorActionListener() {
    @Override
    public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
        if ((event != null && (event.getKeyCode() == KeyEvent.KEYCODE_ENTER)) || (actionId <= EditorInfo.IME_ACTION_PREVIOUS)) {
            doOperation();
            finalAlertDialog.cancel();
        }
        return false;
    }
});

Android - 打开软键盘并在没有对话框或布局或编辑文本的情况下获取值

Android - open soft keyboard and get value without dialog or layout or edittext

user-input

android-softkeyboard