Databases
StackOverflow2013
Postsdbo
POAndroid: intercepting back key
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POAndroid: intercepting back key
    primarykey
    data
    text
    <p>since the back key destroys my application and all data will be lost I need to intercept it to ask the user if that is really what he wants. </p> <p>I thought of the following structure:</p> <pre><code>@Override public boolean onKeyDown(int keyCode, KeyEvent event) { if (keyCode == KeyEvent.KEYCODE_BACK &amp;&amp; event.getRepeatCount() == 0) { // ask user if he really wants to exit // no --&gt; return true; // yes --&gt; return super.onKeyDown(keyCode, event); //manually entering either of the return values works fine } return super.onKeyDown(keyCode, event); } </code></pre> <p>The "ask user" piece I wanted to realize using an alert dialog. My problem is now that the alert dialog is displayed but that the onKeyDown method runs to the end while the alert dialog is shown and that within the alert dialog I have no idea how to tell the system to pass the right return value.</p> <p>The complete code I had in mind is</p> <pre><code>@Override public boolean onKeyDown(int keyCode, KeyEvent event) { if (keyCode == KeyEvent.KEYCODE_BACK &amp;&amp; event.getRepeatCount() == 0) { alertDialog = new AlertDialog.Builder(this).create(); alertDialog.setTitle("Tile"); alertDialog.setMessage("data lost, are you sure?"); alertDialog.setButton(-1, getString(R.string.yes), new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { return; //I only can return without a boolean value here. } }); alertDialog.setButton(-2, getString(R.string.no), new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { return; } }); alertDialog.show(); } return super.onKeyDown(keyCode, event); } </code></pre> <p>Thanks, A.</p>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. This table or related slice is empty.
    1. USAndyAndroid
    plurals
    1. This table or related slice is empty.
    1. PL
      singulars
      1. LTLinked
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    2. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POAndroid: intercepting back key
      1. USCelticParser
      1. VTFavorite
    2. VO
      singulars
      1. POAndroid: intercepting back key
      1. This table or related slice is empty.
      1. VTUpMod
    3. VO
      singulars
      1. POAndroid: intercepting back key
      1. This table or related slice is empty.
      1. VTUpMod
    1. COremove return super.onKeyDown(keyCode, event);
      singulars
      1. POAndroid: intercepting back key
      1. USmotoku
 

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