Setting the background of an Activity

Question

In the onCreate() method of my Activity, I grab the outermost LinearLayout of the Activity\'s layout. I then check to see what the orientation of the phone is. If it is po

Answer 1

When you load the background image in onCreate, save a reference to it. I'm assuming its a Bitmap, so in onDestroy call recycle on the Bitmap and you should be fine.

Answer 2

That happens because the previous image remains in memory until the garbage collector clean it, and everytime the user open an close the keyboard, a new activity is created and a new instance of an image is done. So to prevent that crash, clean the memory on your activity. Use what Femi said, in case it is a bitmap, or force a call to the garbage collector

Answer 3

Override the onConfigurationChange() method, since the changes in layout are handled with this method.

  @Override
    public void onConfigurationChanged(Configuration newConfig) {
            if(newConfig.orientation==Configuration.ORIENTATION_LANDSCAPE)
            {
                //change of background 
            }
            else if(newConfig.orientation==Configuration.ORIENTATION_PORTRAIT)
            {
                //change the background
            }
                    else
                    { //do nothing, this might apply for the keyboard }


          super.onConfigurationChanged(newConfig);


        }


    }

and add this to your manifest

<activity android:name=".YourActivity"
         android:configChanges="keyboardHidden|orientation"                

                  android:label="@string/app_name">