understanding onOptionsItemSelected

Question

I have 2 activities with action bar which has this code in its onCrate method:

getActionBar().setDisplayHomeAsUpEnabled(true);

And here is the onOptionsItemSelected :

@Override
public boolean onOptionsItemSelected(MenuItem item) 
{
   switch (item.getItemId()) 
   {
     case android.R.id.icon:
        finish();
        return true;
     default:
        return super.onOptionsItemSelected(item);
   }
}

The first activity has a parent activity (configured in the manifest) the second one just opened from fragment (without parent fragment configured in the manifest). In the first activity, when I click the icon, the activity item.getItemId() value is the same as android.R.id.icon which then falls in the switch statement (case: Android.R.id.icon ). In the second activity those values are deferent. Why this is happening? I would like to fall in the case: Android.R.id.icon in both activities.

Answer 1

Use this type of code

public boolean onCreateOptionsMenu(Menu menu) {
        menu.add(1, 1, 1, "Done").setIcon(R.drawable.img_done)
                .setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS);
        menu.add(1, 2, 2, "Save").setIcon(R.drawable.img_save)
                .setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS);
        return true;
    }




public boolean onOptionsItemSelected(MenuItem item) {

    switch (item.getItemId()) {
    case 1:
        // Write your code for the first button
        break;
    case 2:
          // Write your code for the second button
        break;
    }
    return true;
}

Answer 2

Instead of using android.R.id.icon use android.R.id.home

Try this code:

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    switch (item.getItemId()) {
    // Respond to the action bar's Up/Home button
    case android.R.id.home:
        NavUtils.navigateUpFromSameTask(this);
        return true;
    }
    return super.onOptionsItemSelected(item);
}

For more detail check this link

Answer 3

Try this:

@Override
    public boolean onOptionsItemSelected(MenuItem item) 
    {
       switch (item.getItemId()) 
       {
         case R.id.icon:            //where 'icon' would be your item ID from menu.xml.
            finish();
            return true;
         default:
            return super.onOptionsItemSelected(item);
       }
    }

Answer 4

you are using android.R.id.icon that might be wrong. Instead of that you may want to use R.id.icon .
There is a difference between both R.id.icon and android.R.icon files.

Also make sure that you are not using following import

import android.R;

It may lead you to unwanted results.