Databases
StackOverflow2013
Postsdbo
POonSomeEventListener crash
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POonSomeEventListener crash
    primarykey
    data
    text
    <p>I have set up an application with a main activity and 2 fragment activities. I use a onsomeevent to pass data from the fragment to the main activity. The first fragment works fine and passes data. There is only one fragment running at a time. I copied the same event listener to second fragment but it crashes with "" must implement onSomeEventListener". I am stuck.</p> <p>the main activity class I implement the listener</p> <pre><code> public class SimpleRGB_Main extends FragmentActivity implements onSomeEventListener { </code></pre> <p>I also capture the data passed from the first fragment slider controls</p> <pre><code> // Return event for RGB controls. @Override public void someEvent(int FixtureNumber, int R_value, int G_value, int B_value) { } </code></pre> <p>The first fragment is called slider controls</p> <pre><code> public class SliderControls extends Fragment { public interface onSomeEventListener { public void someEvent(int position, int R_Value, int G_value, int B_value); } onSomeEventListener someEventListener; @Override public void onAttach(Activity activity) { super.onAttach(activity); try { someEventListener = (onSomeEventListener) activity; } catch (ClassCastException e) { throw new ClassCastException(activity.toString() + " must implement onSomeEventListener"); } } </code></pre> <p>Second fragment</p> <pre><code> public class ButtonControls extends Fragment { public interface onSomeEventListener { public void someEvent(int position, int R_Value, int G_value, int B_value); } onSomeEventListener someEventListener; @Override public void onAttach(Activity activity) { super.onAttach(activity); try { someEventListener = (onSomeEventListener) activity; } catch (ClassCastException e) { throw new ClassCastException(activity.toString() + " must implement onSomeEventListener"); } } </code></pre> <p>Here are the changed I made. I separated the listener and renamed them to make them easy to follow. In main activity. </p> <pre><code> // Return event for RGB controls. @Override public void onFragmentSliderDoSomething(int FixtureNumber, int R_value, int G_value, int B_value) { public void onFragmentButtonsDoSomething(int FixtureNumber, int R_value, int G_value, int B_value) { </code></pre> <p>Also in the main activity be sure to implement both listeners</p> <pre><code> public class SimpleRGB_Main extends FragmentActivity implements SliderControls.FragmentAListener, ButtonControls.FragmentBListener { </code></pre> <p>In Button Fragment</p> <pre><code> public class ButtonControls extends Fragment { private FragmentBListener someEventListener; public interface FragmentBListener { public void onFragmentButtonsDoSomething(int position, int R_Value, int G_value, int B_value); } @Override public void onAttach(Activity activity) { super.onAttach(activity); try { someEventListener = (FragmentBListener) activity; } catch (ClassCastException e) { throw new ClassCastException(activity.toString() + " must implement onSomeEventListener"); } } </code></pre> <p>In Slider Fragment</p> <pre><code> public class SliderControls extends Fragment { private FragmentAListener someEventListener; public interface FragmentAListener { public void onFragmentSliderDoSomething(int position, int R_Value, int G_value, int B_value); } @Override public void onAttach(Activity activity) { super.onAttach(activity); try { someEventListener = (FragmentAListener) activity; } catch (ClassCastException e) { throw new ClassCastException(activity.toString() + " must implement onSomeEventListener"); } } </code></pre>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USBobby
    1. USBobby
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    2. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. CO"I have set up an application with a main activity and 2 fragment activities." As you mentioned, you have more then one activities, right?
      singulars
      1. POonSomeEventListener crash
      1. USDevrim
 

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