Question

我试图在几秒钟后关闭ProgressDialog（仅视觉主题），但没有成功。要关闭对话框，我希望单击Enter键，但即使在事件中完成单击，对话框也始终可见。这是我正在使用的代码：

lectura.setOnKeyListener(new OnKeyListener() {
   public boolean onKey(View view, int keyCode, KeyEvent keyevent) {
      if(pDialog == null) {
           pDialog = new ProgressDialog(ValidacionBlueTooth.this);
           pDialog.setMessage("Sincronizando...");
           pDialog.setCancelable(false);
           pDialog.show();
      }

      if ((keyevent.getAction() == KeyEvent.ACTION_DOWN) && (keyCode == KeyEvent.KEYCODE_ENTER)) {
          if (pDialog.isShowing()) {
          pDialog.dismiss();
      }

      Intent intent = new Intent(ValidacionBlueTooth.this, Validador.class);
      startActivity(intent);
}

修改

我收到此消息，阻止对话关闭，并继续运行代码。

01-27 16:11:31.041: W/ViewRootImpl(6633): Cancelling event due to no window focus: KeyEvent { action=ACTION_UP, keyCode=KEYCODE_3, scanCode=4, metaState=0, flags=0x28, repeatCount=0, eventTime=81457114, downTime=81457113, deviceId=36, source=0x101 }

Answer 1

在keyListener之外创建一个类方法。然后在关键监听器内部，关闭进度对话框。

lectura.setOnKeyListener(new OnKeyListener() {
    public boolean onKey(View view, int keyCode, KeyEvent keyevent) {
    pDialog = new ProgressDialog(ValidacionBlueTooth.this);
    pDialog.setMessage("Sincronizando...");
    pDialog.setCancelable(false);
    pDialog.show()

    if ((keyevent.getAction() == KeyEvent.ACTION_DOWN) && (keyCode == KeyEvent.KEYCODE_ENTER)) {
        if (pDialog.isShowing()) {
            dismissDialog();
        }

        Intent intent = new Intent(ValidacionBlueTooth.this, Validador.class);
        startActivity(intent);
    }
}

private void dismissDialog() {
     pDialog.dismiss();
}

关闭进度对话框失败

1 个答案: