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POHow to correctly start activity from PostExecute in Android?
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9118015
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AcceptedAnswerId
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AnswerCount
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CreationDate
2012-02-02T18:41:02.097
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LastActivityDate
2018-06-26T19:39:58.950
LastEditDate
2012-11-12T09:37:22.113
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Body
I have an AsyncTask, that fills a custom List with parsed data from Internet. In PostExecute I fill that List and get it ready to transfer it to a new Activity. I do it this way: <pre><code>@Override protected void onPostExecute(List<VideoDataDescription> result) { super.onPostExecute(result); MainActivity.progressDialog.dismiss(); context.startActivity(new Intent(context, ResultsQueryActivity.class)); } </code></pre> where context <pre><code> private Context context; </code></pre> In LogCat after executing this code I get a Java.lang.NullPointerException. Is this possible and correct to start an Activity as I do it? UPD I have added <pre><code> private Context mContext; public YoutubeAndYahooParser(Context context) { super(); this.mContext = context; } </code></pre> to initialize context and call <pre><code>YoutubeAndYahooParser youtubeAndYahooParser = new YoutubeAndYahooParser(ResultsQueryActivity.this); youtubeAndYahooParser.execute("my string to pass in asynctak"); </code></pre> After this in PostExecute <pre><code>Intent intent = new Intent(mContext, ResultsQueryActivity.class); intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); mContext.startActivity(intent); </code></pre> I added new flag because of I have got in LogCat the next: *Calling startActivity() from outside of an Activity context requires the FLAG_ACTIVITY_NEW_TASK flag. Is this really what you want?* Am I right?
Tags
<android><android-activity><android-asynctask>
Title
How to correctly start activity from PostExecute in Android?
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1. USEugene Shmorgun
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