asynctask toast
You cannot update UI on background thread. doInBackground() is invoked on the background thread. You should update UI on the UI thread. , Supposing MyAsync is nested in an Activity : private class myAsync extends AsyncTask<Void, Integer, Void> int duration = 0; int current = 0; ...,http://developer.android.com/reference/android/os/AsyncTask.html ... If you want to use Toast You should use this method : onProgressUpdate() protected ... ,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 ... ,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. ,Pass a Context to a constructor of this AsyncTask. An AsyncTask does not extend Context itself so you cannot use getApplicationContext() class phpconnect ... , 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 ...
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 asynctask toast 相關參考資料
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 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 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 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 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 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 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 |