Created
October 24, 2016 21:00
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super simple base presenter (similar to Mortar's Presenter class)
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| import android.os.Bundle; | |
| import android.support.annotation.NonNull; | |
| import android.view.View; | |
| public abstract class Presenter<V extends View> { | |
| private V view; | |
| public final void takeView(@NonNull V view) { | |
| if (view == null) throw new NullPointerException("View must not be null"); | |
| if (this.view != view) { | |
| if (this.view != null) { | |
| dropView(this.view); | |
| } | |
| this.view = view; | |
| } | |
| } | |
| public final void dropView(V view) { | |
| if (view == null) throw new NullPointerException("dropped view must not be null"); | |
| this.view = null; | |
| } | |
| protected final boolean hasView() { | |
| return view != null; | |
| } | |
| protected final V getView() { | |
| return view; | |
| } | |
| protected void onLoad(Bundle savedInstanceState) { | |
| } | |
| protected void onSave(Bundle outState) { | |
| } | |
| } |
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