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Sexual Potatoes
12,051 PointsStuck in TransitionManager exercise
Hey, everyone. I've been stuck in the current exercise and have been getting a Java Lang Null Exception. This is my code.
``` public void onButtonClicked(View view) { if (mCurrentScene == mScene2) { mCurrentScene = mScene1; } else { mCurrentScene = mScene2; } mTransitionManager.transitionTo(mCurrentScene); }
protected void setupTransitions() {
// These methods are setting up scenes and transitions sets like in the video
initScenes();
initSets();
// Start here!
mTransitionManager.setTransition(mScene1, mScene2, mForwardSet);
mTransitionManager.setTransition(mScene2, mScene1, mBackwardSet);
mScene1.enter();
} ```
Can't seem to find what's wrong. Any ideas?
public class MainActivity extends Activity {
protected TransitionManager mTransitionManager;
protected Scene mScene1;
protected Scene mScene2;
protected Scene mCurrentScene;
protected TransitionSet mForwardSet;
protected TransitionSet mBackwardSet;
// Some code omitted for brevity
public void onButtonClicked(View view) {
if (mCurrentScene == mScene2) {
mCurrentScene = mScene1;
}
else {
mCurrentScene = mScene2;
}
}
protected void setupTransitions() {
// These methods are setting up scenes and transitions sets like in the video
initScenes();
initSets();
// Start here!
}
}
1 Answer
Jess Pendley
13,128 PointsViewGroup root = (ViewGroup) findViewById(R.id.container);
Scene expandedScene = Scene.getSceneForLayout(root, R.layout.transition_scene_2, this.getContext());
TransitionManager.go(expandedScene, new ChangeBounds());