implementation "android.arch.lifecycle:runtime:$lifecycle_version" //noinspection LifecycleAnnotationProcessorWithJava8 annotationProcessor "android.arch.lifecycle:compiler:$lifecycle_version" // For Kotlin use kapt instead of annotationProcessor // 如果用Java8, 用于替代compiler implementation "android.arch....
LifecycleRegistry是Lifecycle的子类,通过new LifecycleRegistry(this);把宿主Owner,也就是当前Activity作为构造参数传递进去 Activity并不是直接派发生命周期,而是利用ReportFragment.injectIfNeededIn(this), 代码语言:javascript 代码运行次数:0 运行 AI代码解释 publicclassReportFragmentextendsFragment{publicstaticvoidinjectIf...
* Returns the current state of the Lifecycle. * * @return The current state of the Lifecycle. */ @MainThread @NonNull public abstract State getCurrentState(); Event?:应用组件生命周期事件的枚举类。 public enum Event { /** * Constant for onCreate event of the {@link LifecycleOwner}. */...
* Returns the current state of the Lifecycle. * * @return The current state of the Lifecycle. */ @MainThread @NonNull public abstract State getCurrentState(); @SuppressWarnings("WeakerAccess") public enum Event { /** * Constant for onCreate event of the {@link LifecycleOwner}. */ ...
* * @return The lifecycle of the provider. */ @NonNull Lifecycle getLifecycle(); } 3、LifecycleObserver 生命周期观察者,是个空接口,没有任何方法,只是用于标识实现该接口的类具有生命周期感知能力 public interface LifecycleObserver { } 先分析第一种方式 问题一:Lifecycle是如何感知到Activity或者Fragment...
Lifecycle.java public abstract class Lifecycle { ... @MainThread public abstract void addObserver(@NonNull LifecycleObserver observer); } LifecycleRegistry.java @Override public void addObserver(@NonNull LifecycleObserver observer) { // 这里有一个 mState 的状态,我们后面讲 State initialState = mState...
if(lifecycleinstanceofLifecycleRegistry) { ((LifecycleRegistry) lifecycle).handleLifecycleEvent(event); } }ReportFragment.injectIfNeededIn(this)的作用是在Activity之上,创建一个不可见的Fragment的。当Fragment的生命周期发生变化,会通过dispatch(),接着调用((LifecycleRegistry) lifecycle).handleLifecycleEvent(event...
@OnLifecycleEvent(Lifecycle.Event.ON_CREATE)fun create(){thread {Thread.sleep(4000)fun0()}}复制代码 两种情况对应的日志 不关闭页面等待耗时任务完成,耗时任务结束后查看日志: 在耗时任务结束前关闭页面,耗时任务结束后查看日志 结论 是使用LifeCycle的lifecycle.currentState.isAtLeast(Lifecycle.State.CREATED)方...
// happens only on the top of stack (never in reentrance), // so it doesn't have to take in account parents private void sync() { LifecycleOwner lifecycleOwner = mLifecycleOwner.get(); if (lifecycleOwner == null) { throw new IllegalStateException("LifecycleOwner of this LifecycleRegistry...
LifecycleOwner.java public interfaceLifecycleOwner{ @NonNullLifecyclegetLifecycle(); } 1.3 Lifecycle 的使用方法 添加依赖:在 build.gradle 中添加 Lifecycle 依赖,需要注意区分过时的方式: 模块build.gradle // 过时方式(lifecycle-extensions 不再维护)implementation"androidx.lifecycle:lifecycle-extensions:2.4.0"/...