Lifecycle作用：讓所有定義組件都有生命周期
使用Lifecycle的繼承LifecycleOwner
BaseActivity代碼
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
? ? mLifecycleRegistry =new LifecycleRegistry(this);
? ? mLifecycleRegistry.setCurrentState(Lifecycle.State.CREATED);
}
@Override
protected void onStart() {
super.onStart();
? ? mLifecycleRegistry.setCurrentState(Lifecycle.State.START);
}
@Override
protected void onResume() {
super.onResume();
? ? mLifecycleRegistry.setCurrentState(Lifecycle.State.RESUMED);
}
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使用的組件中添加下面代碼
private LifecycleOwner mLifecycleOwner;
public void setLifecycleOwner(LifecycleOwner lifecycleOwner) {
mLifecycleOwner = lifecycleOwner;
? ? mLifecycleOwner.getLifecycle().addObserver(new LifecycleEventObserver() {
@Override
? ? ? ? public void onStateChanged(LifecycleOwner source, final Lifecycle.Event event) {
if (event == Lifecycle.Event.ON_CREATE) {
onCreate();
? ? ? ? ? ? }else if (event == Lifecycle.Event.ON_START) {
onStart();
? ? ? ? ? ? }else if (event == Lifecycle.Event.ON_RESUME) {
onResume();
? ? ? ? ? ? }
//其它生命周期自己補(bǔ)全
}
});
}
public void onCreate() {
Log.e(TAG, "onCreate:");
}
public void onStart() {
Log.e(TAG, "onStart:");
}
public void onResume() {
Log.e(TAG, "onResume:");
}
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