Question

我有一个自定义的DialogFragment。我希望在切换活动时显示此对话框。

场景： - 1）在actvity1中，我启动对话框。 2）启动asynctask类。 3）在doInBackground（）中进行一些身份验证。 4）从onPostExecute（）开始新的活动。

问题： -

对话框在asynctask之前停止。

这是我的代码： -

myWebView.setWebViewClient(new WebViewClient()
        {


        @Override
            public void onPageStarted(WebView view, String url,
                    Bitmap favicon) 
            {
                // TODO Auto-generated method stub
                super.onPageStarted(view, url, favicon);
                redirected =view.getUrl();
                redirected=  Uri.decode(redirected);

                if(redirected!=null && redirected.contains(string1))
                {

                    myprogressDialog.show(getFragmentManager(), "Wait");
                }



            }

            @Override
            public void onPageFinished(WebView view, String url) 
            {
                // TODO Auto-generated method stub
                super.onPageFinished(view, url);


                if(redirected!=null && redirected.contains(mystring) )
                {


                    myWebView.stopLoading();

                    String authorizationContentString =  myurl


                    new Authentication(Activity2.this, myprogressDialog, url).execute(authorizationString);


                }

private static class ProgressDialogFragment extends DialogFragment
        {
             public static ProgressDialogFragment newInstance()
                {
                    return new ProgressDialogFragment();
                }

                @Override
                public void onCreate(Bundle savedInstanceState)
                {
                    super.onCreate(savedInstanceState);
                    setStyle(STYLE_NO_FRAME, android.R.style.Theme_Translucent);
                }

                @Override
                public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
                {
                    return inflater.inflate(R.layout.fragment_dialog_progress, container, false);
                }
        }

Authentication.java

    @Override
protected void onPreExecute()
{
    // TODO Auto-generated method stub

    super.onPreExecute();

    /*  progDia.show(man, "wait");
      progDia= new Utility.ProgressDialogFragment().newInstance();*/

}

public AuthenticateDevice(Details1 myContext, ProgressDialogFragment myprogressDialog, String Url)
{
    // TODO Auto-generated constructor stub
    mContext = myContext;
    this.progDia = myprogressDialog;
    this.Url = Url;
    this.mActivity = myContext;
}

@Override
protected Void doInBackground(String... params) 
{
    // TODO Auto-generated method stub
    //Some authentication
            return null;
}

@Override
protected void onPostExecute(Void result) 
{
    // TODO Auto-generated method stub
    super.onPostExecute(result);

    if(progDia!=null&&progDia.isVisible())
    {
        progDia.dismiss();
    }
    Intent myIntent = new Intent(mContext, Activity2.class);





    myIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
    mContext.startActivity(myIntent);
    mActivity.finish();
}

Answer 1

尝试使用以下代码在异步

中显示进度对话框

ProgressDialog pd;

class MYAsync extends AsyncTask<Void , Void, String>{

        @Override
        protected void onPreExecute() {             
            //   pd.setTitle("Please Wait");
            pd.setMessage("Working...");
            pd.setCancelable(false);
            pd.setIndeterminate(true);
            pd.show();
        }
        @Override
        protected String doInBackground(Void... params) {
            // TODO Auto-generated method stub

            return null;
        }

        @Override
        protected void onPostExecute(String sResponse) {
            pd.dismiss();
            pd.cancel();


            }
        }
    }

Answer 2

我试图重新创建它，似乎工作正常。以下方法有解释您的行为的评论。

private void myWOrk() {

    try {

         final ProgressDialog Dialog = new ProgressDialog(this);
         Dialog.setMessage("Loading route...");
         Dialog.show();

        Thread.sleep(2000);// load url and redirect
        //Toast.makeText(LoginActivity.this, "redirect caught", Toast.LENGTH_SHORT).show();

        new AsyncTask<Object, Object, Object>() {

            protected String doInBackground(Object... params) {
                try {
                    Thread.sleep(2000);// authenticate
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
                return null;
            }

            protected void onPostExecute(Object result) {

                Toast.makeText(LoginActivity.this, "onPostExecute", Toast.LENGTH_SHORT).show();
                try {
                    Thread.sleep(2000);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
                Dialog.dismiss();// start your new activity here

            };

        }.execute(null, null, null);
    } catch (InterruptedException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

}`

从一个活动切换到另一个活动时创建“进度”对话

2 个答案: