Databases
StackOverflow2013
Postsdbo
PO
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PO
    primarykey
    data
    text
    <p>If the component to update is the component that starts the update Job (through AsyncTask or Service), you should probably use an inner <a href="http://developer.android.com/reference/android/os/AsyncTask.html" rel="nofollow noreferrer">AsyncTask</a><br /></p> <p>AsyncTask offers you two posibilites to update the UI :</p> <ul> <li>To update the UI in parallel with the task executed in doInBackground() (e.g. to update a ProgressBar), you'll have to call publishProgress() inside the doInBackground() method. Then you have to update the UI in the onProgressUpdate() method.</li> <li>To update the UI when the task is done, you have to do it in the onPostExecute() method.</li> </ul> <p>see :<br /> <a href="http://developer.android.com/reference/android/os/AsyncTask.html#doInBackground%28Params...%29" rel="nofollow noreferrer">doInBackground()</a><br /> <a href="http://developer.android.com/reference/android/os/AsyncTask.html#publishProgress%28Progress...%29" rel="nofollow noreferrer">publishProgress()</a><br /> <a href="http://developer.android.com/reference/android/os/AsyncTask.html#onProgressUpdate%28Progress...%29" rel="nofollow noreferrer">onProgressUpdate()</a><br /> <a href="http://developer.android.com/reference/android/os/AsyncTask.html#onPostExecute%28Result%29" rel="nofollow noreferrer">onPostExecute()</a><br /></p> <p><b>Edit :</b></p> <pre><code>public class Home extends Activity implements OnClickListener { private Button mButton; private TextView mTextView; public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.my_layout); mButton = (Button) findViewById(R.id.myButton); mTextView = (TextView) findViewById(R.id.myTextView); } @Override public void onClick(View view) { switch (view.getId()) { case R.id.myButton: (new MyAsyncTask()).execute(); break; default: break; } } private class MyAsyncTask extends AsyncTask&lt;String, int[], Boolean&gt; { /** This method runs on a background thread (not on the UI thread) */ @Override protected String doInBackground(String... params) { for (int progressValue = 0; progressValue &lt; 100; progressValue++) { publishProgress(progressValue); } } /** This method runs on the UI thread */ @Override protected void onProgressUpdate(Integer... progressValue) { // TODO Update your ProgressBar here mTextView.setText("Updating : " + progressValue + "/100"); } /** * Called after doInBackground() method * This method runs on the UI thread */ @Override protected void onPostExecute(Boolean result) { // TODO Update the UI thread with the final result mTextView.setText("Update complete !"); } } } </code></pre> <p>You can find another example <a href="https://stackoverflow.com/questions/10316335/how-access-parent-class-view-from-callback-function-in-asynctask/10321332#10321332">here</a>.</p>
    singulars
    1. This table or related slice is empty.
    1. POBest practices of notifying UI components from AsyncTask or service
      singulars
      1. PTQuestion
    1. PTAnswer
    1. USCommunity
    1. USCyril Leroux
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. POBest practices of notifying UI components from AsyncTask or service
      singulars
      1. PTQuestion
    1. This table or related slice is empty.
    1. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTAcceptedByOriginator
    2. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    3. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    1. COShould I use a reference of the UI in the AsyncTask to update it?
      singulars
      1. PO
      1. USdanizmax
    2. COI think a good practice is to make the AsyncTask an inner class of the activity you want to udpate. This way you can call and update the widgets (buttons, imageViews, ...) in onPostExecute() or onProgressUpdate(). I will edit me post with an example.
      singulars
      1. PO
      1. USCyril Leroux
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload