Question

我是初学者Android程序员。尝试使用AsyncTask和ProgressDialog但遇到问题 - ProgressDialog无法被解雇。

以下代码位于importExportActivity中，它扩展了Activity -

public class ProgressTask extends AsyncTask<Void, Void, Void> {    
    ProgressDialog dialog1 = new ProgressDialog(importExportActivity.this);

    protected void onPreExecute() {
          this.dialog1.show(importExportActivity.this, "",
                                  "Please wait for few seconds...", true);
    }

    @Override
    protected void onPostExecute(final Void success) {
          dialog1.dismiss();
    }

    protected Void doInBackground(final Void ... args) {
               ...... did the main logic ....
          return null;
    }
 }

完成了很多谷歌搜索，但似乎无法找到解决方案。

有人可以帮忙吗？

Answer 1

我认为你没有回来：

 @Override
protected void onPostExecute(final Void success) {
      dialog1.dismiss();
    return;

}

Answer 2

回答我自己的问题。以下工作：

public class ProgressTask extends AsyncTask<Void, Void, Void> {    
ProgressDialog dialog1; 

protected void onPreExecute() {
      dialog1 = ProgressDialog.show(importExportActivity.this, "",
                              "Please wait for few seconds...", true);
}

@Override
protected void onPostExecute(final Void success) {
      dialog1.dismiss();
}

protected Void doInBackground(final Void ... args) {
           ...... did the main logic ....
      return null;
}

}

Answer 3

protected void onPreExecute() {
      this.dialog1.show(importExportActivity.this, "",
                              "Please wait for few seconds...", true);
      super.onPreExecute();
}

@Override
protected void onPostExecute(final Void success) {
      dialog1.dismiss();
      super.onPostExecute(RESULT);
}

我正在这样工作......

无法在Android应用中解除ProgressDialog

3 个答案: