asynctask toast
You cannot update UI on background thread. doInBackground() is invoked on the background thread. You should update UI on the UI thread. ,You should set a boolean flag in the catch block when an error occurs, then display an appropriate Toast in onProgressUpdate() , onPostExecute() , or any of the ...
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 asynctask toast 相關參考資料
How to raise a toast in AsyncTask, I am prompted to used the ...
http://developer.android.com/reference/android/os/AsyncTask.html ... If you want to use Toast You should use this method : onProgressUpdate() protected ... https://stackoverflow.com How to display a Toast in Android AsyncTask? - Stack Overflow
You cannot update UI on background thread. doInBackground() is invoked on the background thread. You should update UI on the UI thread. https://stackoverflow.com How to show toast in AsyncTask in doInBackground - Stack Overflow
You should set a boolean flag in the catch block when an error occurs, then display an appropriate Toast in onProgressUpdate() , onPostExecute() , or any of the ... https://stackoverflow.com Toast in AsyncTask - Stack Overflow
Pass a Context to a constructor of this AsyncTask. An AsyncTask does not extend Context itself so you cannot use getApplicationContext() class phpconnect ... https://stackoverflow.com How to display toast in AsyncTask - Stack Overflow
Supposing MyAsync is nested in an Activity : private class myAsync extends AsyncTask<Void, Integer, Void> int duration = 0; int current = 0; ... https://stackoverflow.com Show Toast inside AsyncTask - Stack Overflow
Toast belongs to UI. We can only update UI in main thread (UI Thread). AsyncTask.doInBackground() will never be called in main thread and that's the reason. https://stackoverflow.com 木人馬戲團: [Android] AsyncTask 使用Toast
在#doInBackground() 抓檔時，會想要即時用Toast 顯示訊息。 但是會造成錯誤： java.lang.RuntimeException: An error occured while executing ... https://yuzhou2.blogspot.com |