[英]Android - open soft keyboard and get value without dialog or layout or edittext
我會添加一個 editText 使其不可見並將焦點放在它上面。 要明確顯示它:
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);
並再次隱藏它
InputMethodManager imm = (InputMethodManager) getSystemService(this.INPUT_METHOD_SERVICE);
imm.hideSoftInputFromWindow(editText.getWindowToken(), 0);
我設計了一個不同的解決方案,靈感來自 Tobias 的建議和這個答案。 我創建了一個 AlertDialog 彈出窗口,其中包含一個 EditText。 然后我在edittext中添加了一個延遲的“觸摸”以打開軟鍵盤,然后處理“完成”事件以獲取輸入值並關閉底層彈出窗口。 下面是一些示例代碼:
//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;
}
});
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