Error exception when show the progress dialog in the async task

Question

I am currently work on an async task to post some data to the API , the problem is it will throw an exception when I was working with the progress dialog. The async task is named "APIhandler" that will handle several type of case.

Here is the constructor

   public APIHandler(Context _ctx,EasyTracker _tracker,String _formType) {
        this.ctx = _ctx;
        this.tracker = _tracker;
        this.formType = _formType;

        SharedPreferences prefs = ctx.getSharedPreferences("userInfo", 0);
        token = prefs.getString("token","");
        memId = prefs.getString("memId","");

        if (formType.equals("uploadImg")) {
            pd = ProgressDialog.show(ctx, ctx.getResources().getString(R.string.sys_info),ctx.getResources().getString(R.string.publishing));
        } else {
            pd = ProgressDialog.show(ctx, ctx.getResources().getString(R.string.sys_info),ctx.getResources().getString(R.string.loading));
        }
    }

Here is the onpostexecute

@Override
    protected void onPostExecute(JSONObject result) {
        if (pd != null && pd.isShowing())
            pd.dismiss();
}

Here is the way to call APIhandler

new APIHandler(ctx,tracker,"login").execute(ctx,session.getAccessToken());

The error code (notice that it is fail at the dialog.show)

02-18 14:17:17.942: E/WindowManager(440): Activity com.project.hkseven.Activity.SharePicForm has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView@4231c268 that was originally added here
02-18 14:17:17.942: E/WindowManager(440): android.view.WindowLeaked: Activity com.project.hkseven.Activity.SharePicForm has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView@4231c268 that was originally added here
02-18 14:17:17.942: E/WindowManager(440):   at android.view.ViewRootImpl.<init>(ViewRootImpl.java:439)
02-18 14:17:17.942: E/WindowManager(440):   at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:307)
02-18 14:17:17.942: E/WindowManager(440):   at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:228)
02-18 14:17:17.942: E/WindowManager(440):   at android.view.WindowManagerImpl$CompatModeWrapper.addView(WindowManagerImpl.java:153)
02-18 14:17:17.942: E/WindowManager(440):   at android.view.Window$LocalWindowManager.addView(Window.java:586)
02-18 14:17:17.942: E/WindowManager(440):   at android.app.Dialog.show(Dialog.java:277)
02-18 14:17:17.942: E/WindowManager(440):   at android.app.ProgressDialog.show(ProgressDialog.java:116)
02-18 14:17:17.942: E/WindowManager(440):   at android.app.ProgressDialog.show(ProgressDialog.java:99)
02-18 14:17:17.942: E/WindowManager(440):   at android.app.ProgressDialog.show(ProgressDialog.java:94)
02-18 14:17:17.942: E/WindowManager(440):   at com.project.hkseven.Utility.APIHandler.<init>(APIHandler.java:62)
02-18 14:17:17.942: E/WindowManager(440):   at com.project.hkseven.Activity.SharePicForm$4.onCompleted(SharePicForm.java:282)
02-18 14:17:17.942: E/WindowManager(440):   at com.facebook.Request$4.run(Request.java:1669)
02-18 14:17:17.942: E/WindowManager(440):   at android.os.Handler.handleCallback(Handler.java:615)
02-18 14:17:17.942: E/WindowManager(440):   at android.os.Handler.dispatchMessage(Handler.java:92)
02-18 14:17:17.942: E/WindowManager(440):   at android.os.Looper.loop(Looper.java:137)
02-18 14:17:17.942: E/WindowManager(440):   at android.app.ActivityThread.main(ActivityThread.java:4882)
02-18 14:17:17.942: E/WindowManager(440):   at java.lang.reflect.Method.invokeNative(Native Method)
02-18 14:17:17.942: E/WindowManager(440):   at java.lang.reflect.Method.invoke(Method.java:511)
02-18 14:17:17.942: E/WindowManager(440):   at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:789)
02-18 14:17:17.942: E/WindowManager(440):   at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:556)
02-18 14:17:17.942: E/WindowManager(440):   at dalvik.system.NativeStart.main(Native Method)

How to fix the problem ? Thanks a lot

Answer 1

Just make sure that you are not finishing your SharePicForm activity before showing dialog. Error shows that your SharePicForm activity does not exist while showing dialog. Or may be it's already exited.