Android Lifecycle使用

Lifecycle作用：让所有定义组件都有生命周期

使用Lifecycle的继承LifecycleOwner

BaseActivity代码

@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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使用的组件中添加下面代码

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();

            }

//其它生命周期自己补全

}

});

}

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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调用的地方 直接 使用该组件 xxxxView..setLifecycleOwner(this);

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这就是lifecicle jetpack地址 https://github.com/la149457357/jetpack 欢迎点赞。。谢谢大家