android– 这是用于在AppWidgetProvider中观察LiveData的正确LifeCycleOwner

概述我需要在AppWidgetProvider中观察一些LiveData(在onUpdate期间).我想知道,以下哪一个更适合使用LifeCycleObserver？ForeverStartLifecycleOwner(自定义)importandroid.arch.lifecycle.Lifecycle;importandroid.arch.lifecycle.LifecycleOwner;importandroid.arch.lifecycle.

我需要在appwidgetprovider中观察一些liveData(在onUpdate期间).我想知道,以下哪一个更适合使用lifeCycleObserver？

ForeverStartlifecycleOwner(自定义)

import androID.arch.lifecycle.lifecycle;import androID.arch.lifecycle.lifecycleOwner;import androID.arch.lifecycle.lifecycleRegistry;import androID.support.annotation.NonNull;public enum ForeverStartlifecycleOwner implements lifecycleOwner {    INSTANCE;    private final lifecycleRegistry mlifecycleRegistry;    ForeverStartlifecycleOwner() {        mlifecycleRegistry = new lifecycleRegistry(this);        mlifecycleRegistry.handlelifecycleEvent(lifecycle.Event.ON_START);    }    @NonNull    @OverrIDe    public lifecycle getlifecycle() {        return mlifecycleRegistry;    }}

或者,我应该使用ProcesslifecycleOwner.get()吗？

两者都很好.但是,哪一个更合适？

解决方法:

最后,我坚持以下解决方案.它工作正常,因为我没有看到任何实时崩溃报告,或接收客户的抱怨.但是,如果您知道更好的方法,请告诉我.

ForeverStartlifecycleOwner

import androID.arch.lifecycle.lifecycle;import androID.arch.lifecycle.lifecycleOwner;import androID.arch.lifecycle.lifecycleRegistry;import androID.support.annotation.NonNull;public enum ForeverStartlifecycleOwner implements lifecycleOwner {    INSTANCE;    private final lifecycleRegistry mlifecycleRegistry;    ForeverStartlifecycleOwner() {        mlifecycleRegistry = new lifecycleRegistry(this);        mlifecycleRegistry.handlelifecycleEvent(lifecycle.Event.ON_START);    }    @NonNull    @OverrIDe    public lifecycle getlifecycle() {        return mlifecycleRegistry;    }}

用法

public static <T> voID ready(liveData<T> liveData, lifecycleOwner lifecycleOwner, Callable<T> callable) {    T t = liveData.getValue();    if (t != null) {        callable.call(t);        return;    }    liveData.observe(lifecycleOwner, new Observer<T>() {        @OverrIDe        public voID onChanged(@Nullable T t) {            liveData.removeObserver(this);            callable.call(t);        }    });}public static voID onUpdate(Context context, AppWidgetManager appWidgetManager, int appWidgetID) {    MediatorliveData<Result> resultliveData = getResultliveData(appWidgetID);    ready(resultliveData, ForeverStartlifecycleOwner.INSTANCE, result -> onUpdate(context, appWidgetManager, result.stickynoteConfig, result.note));}

总结

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