androidx.lifecycle.Lifecycle类的使用及代码示例

x33g5p2x  于2022-01-24 转载在 其他  
字(9.0k)|赞(0)|评价(0)|浏览(240)

本文整理了Java中androidx.lifecycle.Lifecycle类的一些代码示例，展示了Lifecycle类的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Lifecycle类的具体详情如下：
包路径：androidx.lifecycle.Lifecycle
类名称：Lifecycle

Lifecycle介绍

[英]Defines an object that has an Android Lifecycle. android.support.v4.app.Fragmentand android.support.v4.app.FragmentActivity classes implement LifecycleOwner interface which has the LifecycleOwner#getLifecycle() method to access the Lifecycle. You can also implement LifecycleOwnerin your own classes.

Event#ON_CREATE, Event#ON_START, Event#ON_RESUME events in this class are dispatched after the LifecycleOwner's related method returns. Event#ON_PAUSE, Event#ON_STOP, Event#ON_DESTROY events in this class are dispatched before the LifecycleOwner's related method is called. For instance, Event#ON_START will be dispatched after android.app.Activity#onStart returns, Event#ON_STOP will be dispatched before android.app.Activity#onStop is called. This gives you certain guarantees on which state the owner is in.

If you use Java 8 Language, then observe events with DefaultLifecycleObserver. To include it you should add "android.arch.lifecycle:common-java8:" to your build.gradle file.

class TestObserver implements DefaultLifecycleObserver { 
 @Override 
public void onCreate(LifecycleOwner owner) { 
// your code 
} 
}

If you use Java 7 Language, Lifecycle events are observed using annotations. Once Java 8 Language becomes mainstream on Android, annotations will be deprecated, so between DefaultLifecycleObserver and annotations, you must always prefer DefaultLifecycleObserver.

class TestObserver implements LifecycleObserver { 
 @OnLifecycleEvent(ON_STOP) 
void onStopped() {} 
}

Observer methods can receive zero or one argument. If used, the first argument must be of type LifecycleOwner. Methods annotated with Event#ON_ANY can receive the second argument, which must be of type Event.

class TestObserver implements LifecycleObserver { 
 @OnLifecycleEvent(ON_CREATE) 
void onCreated(LifecycleOwner source) {} 
 @OnLifecycleEvent(ON_ANY) 
void onAny(LifecycleOwner source, Event event) {} 
}

These additional parameters are provided to allow you to conveniently observe multiple providers and events without tracking them manually.
[中]定义具有Android生命周期的对象。安卓支持v4。应用程序。碎片和安卓。支持v4。应用程序。FragmentActivity类实现LifecycleOwner接口，该接口具有访问生命周期的LifecycleOwner#getLifecycle（）方法。您还可以在自己的类中实现LifecycleOwner。
此类中的事件#ON#CREATE、事件#ON#START、事件#ON#RESUME事件在LifecycleOwner的相关方法返回后被调度。在调用LifecycleOwner的相关方法之前，将调度此类中的事件#ON_PAUSE、事件#ON_STOP、事件#ON#u DESTROY事件。例如，事件#ON_START将在android之后调度。应用程序。活动#启动返回，事件#启动停止将在android之前调度。应用程序。活动#在顶部被称为。这为您提供了所有者所处状态的某些保证。
如果使用Java 8语言，则使用DefaultLifecycleObserver观察事件。要包含它，您应该在构建中添加“android.arch.lifecycle:common-java8:”。格雷德尔档案。

class TestObserver implements DefaultLifecycleObserver { 
 @Override 
public void onCreate(LifecycleOwner owner) { 
// your code 
} 
}

如果您使用Java 7语言，则使用注释观察生命周期事件。一旦Java 8语言成为Android上的主流，注释将被弃用，因此在DefaultLifecycleObserver和注释之间，您必须始终选择DefaultLifecycleObserver

class TestObserver implements LifecycleObserver { 
 @OnLifecycleEvent(ON_STOP) 
void onStopped() {} 
}

观察者方法可以接收零个或一个参数。如果使用，第一个参数必须是LifecycleOwner类型。用Event#ON_ANY注释的方法可以接收第二个参数，该参数必须是Event类型。

class TestObserver implements LifecycleObserver { 
 @OnLifecycleEvent(ON_CREATE) 
void onCreated(LifecycleOwner source) {} 
 @OnLifecycleEvent(ON_ANY) 
void onAny(LifecycleOwner source, Event event) {} 
}

这些附加参数允许您方便地观察多个提供者和事件，而无需手动跟踪它们。

代码示例

代码示例来源：origin: trello/RxLifecycle

private AndroidLifecycle(LifecycleOwner owner) {
  owner.getLifecycle().addObserver(this);
}

代码示例来源：origin: bluelinelabs/Conductor

public ArchLifecycleController() {
  Log.i(TAG, "Conductor: Constructor called");
  getLifecycle().addObserver(new LifecycleObserver() {
    @OnLifecycleEvent(Event.ON_ANY)
    void onLifecycleEvent(@NonNull LifecycleOwner source, @NonNull Event event) {
      Log.d(TAG, "Lifecycle: " + source.getClass().getSimpleName() + " emitted event " + event + " and is now in state " + source.getLifecycle().getCurrentState());
    }
  });
  Log.d(TAG, "Lifecycle: " + getClass().getSimpleName() + " is now in state " + getLifecycle().getCurrentState());
}

代码示例来源：origin: trello/RxLifecycle

@OnLifecycleEvent(Lifecycle.Event.ON_ANY)
  void onEvent(LifecycleOwner owner, Lifecycle.Event event) {
    lifecycleSubject.onNext(event);
    if (event == Lifecycle.Event.ON_DESTROY) {
      owner.getLifecycle().removeObserver(this);
    }
  }
}

代码示例来源：origin: chat-sdk/chat-sdk-android

public void setEnabled (boolean enabled) {
  if (enabled == this.enabled) {
    return;
  }
  this.enabled = enabled;
  if(enabled) {
    ProcessLifecycleOwner.get().getLifecycle().addObserver(this);
  }
  else {
    ProcessLifecycleOwner.get().getLifecycle().removeObserver(this);
  }
}

代码示例来源：origin: bluelinelabs/Conductor

@OnLifecycleEvent(Event.ON_ANY)
  void onLifecycleEvent(@NonNull LifecycleOwner source, @NonNull Event event) {
    Log.d(TAG, "Lifecycle: " + source.getClass().getSimpleName() + " emitted event " + event + " and is now in state " + source.getLifecycle().getCurrentState());
  }
});

代码示例来源：origin: ankidroid/Anki-Android

@Override
protected void onPostExecute(Collection col) {
  super.onPostExecute(col);
  if (mLifecycleOwner.getLifecycle().getCurrentState().isAtLeast(Lifecycle.State.CREATED)) {
    mCallback.execute(col);
  }
}

代码示例来源：origin: square/picasso

@Override protected void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 super.setContentView(R.layout.picasso_sample_activity);
 sampleContent = findViewById(R.id.sample_content);
 final ListView activityList = findViewById(R.id.activity_list);
 final PicassoSampleAdapter adapter = new PicassoSampleAdapter(this);
 activityList.setAdapter(adapter);
 activityList.setOnItemClickListener(new AdapterView.OnItemClickListener() {
  @Override
  public void onItemClick(AdapterView<?> adapterView, View view, int position, long id) {
   adapter.getItem(position).launch(PicassoSampleActivity.this);
  }
 });
 showHide = findViewById(R.id.faux_action_bar_control);
 showHide.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
  @Override public void onCheckedChanged(CompoundButton compoundButton, boolean checked) {
   activityList.setVisibility(checked ? VISIBLE : GONE);
  }
 });
 getLifecycle().addObserver(PicassoProvider.get());
}

代码示例来源：origin: xcesco/kripton

public void observe(@NonNull LifecycleOwner owner, @NonNull Observer<? super T> observer) {
  assertMainThread("observe");
  if (owner.getLifecycle().getCurrentState() == DESTROYED) {
    return;
  owner.getLifecycle().addObserver(wrapper);

代码示例来源：origin: robolectric/robolectric

@Test
public void launch_lifecycleOwnerActivity() {
 ActivityScenario<LifecycleOwnerActivity> activityScenario =
   ActivityScenario.launch(LifecycleOwnerActivity.class);
 assertThat(activityScenario).isNotNull();
 activityScenario.onActivity(
   activity -> {
    assertThat(activity.getLifecycle().getCurrentState()).isEqualTo(State.RESUMED);
   });
 activityScenario.moveToState(State.STARTED);
 activityScenario.onActivity(
   activity -> {
    assertThat(activity.getLifecycle().getCurrentState()).isEqualTo(State.STARTED);
   });
 activityScenario.moveToState(State.CREATED);
 activityScenario.onActivity(
   activity -> {
    assertThat(activity.getLifecycle().getCurrentState()).isEqualTo(State.CREATED);
   });
}

代码示例来源：origin: skydoves/ColorPickerView

/**
 * removes this color picker observer from the the {@link LifecycleOwner}.
 *
 * @param lifecycleOwner {@link LifecycleOwner}.
 */
public void removeLifecycleOwner(LifecycleOwner lifecycleOwner) {
  lifecycleOwner.getLifecycle().removeObserver(this);
}

代码示例来源：origin: skydoves/ColorPickerView

/**
 * sets the {@link LifecycleOwner}.
 *
 * @param lifecycleOwner {@link LifecycleOwner}.
 */
public void setLifecycleOwner(LifecycleOwner lifecycleOwner) {
  lifecycleOwner.getLifecycle().addObserver(this);
}

代码示例来源：origin: zhiwei1990/android-jetpack-demo

public void enable() {
  enable = true;
  if (owner.getLifecycle().getCurrentState().isAtLeast(Lifecycle.State.STARTED)) {
    //判断，如果没有开始定位，就再次开启定位,定位成功，使用callback回调UI刷新
    callBack.onSuccess();
  }
}

代码示例来源：origin: googlecodelabs/android-lifecycles

public BoundLocationListener(LifecycleOwner lifecycleOwner,
               LocationListener listener, Context context) {
  mContext = context;
  mListener = listener;
  lifecycleOwner.getLifecycle().addObserver(this);
}

代码示例来源：origin: hazems/mvvm-sample-app

@Override
  public void onClick(Project project) {
    if (getLifecycle().getCurrentState().isAtLeast(Lifecycle.State.STARTED)) {
      ((MainActivity) getActivity()).show(project);
    }
  }
};

代码示例来源：origin: skydoves/PowerMenu

/**
 * sets {@link LifecycleOwner} for preventing memory leak.
 *
 * <p>if sets the {@link LifecycleOwner} this popup will be dismissed automatically
 *
 * <p>when onDestroy method called by lifecycle.
 *
 * @param lifecycleOwner {@link androidx.appcompat.app.AppCompatActivity},
 *     <p>{@link androidx.fragment.app.FragmentActivity} or etc are implements {@link
 *     LifecycleOwner}.
 */
public void setLifecycleOwner(LifecycleOwner lifecycleOwner) {
  lifecycleOwner.getLifecycle().addObserver(this);
  this.lifecycleOwner = lifecycleOwner;
}

代码示例来源：origin: PureWriter/about-page

public static void attach(@NonNull AbsAboutActivity activity, int index, boolean showDefaultCategory, @NonNull JsonConverter jsonConverter) {
  RecommendedLoaderDelegate delegate = new RecommendedLoaderDelegate(activity, index, showDefaultCategory, jsonConverter);
  activity.getLifecycle().addObserver(delegate);
  delegate.start();
}

代码示例来源：origin: zhihu/SugarAdapter

SugarAdapter adapter = SugarAdapter.Builder.with(list)
    .add(FooHolder.class)
    .add(BarHolder.class, holder -> holder.getLifecycle().addObserver(new LifecycleObserver() {
      @OnLifecycleEvent(Lifecycle.Event.ON_CREATE)
      public void onSugarHolderCreated(@NonNull LifecycleOwner owner) {

内容来源于网络，如有侵权，请联系作者删除！

Lifecycle

相关文章

    查看更多

    热门标签

    更多
    JavaquerypythonNode开发语言requestUtil数据库Table后端算法LoggerMessageElementParser

    最新文章

    更多
    • 蜀ICP备13028337号-1 大数据知识库 https://www.saoniuhuo.com © All rights reserved
    • 本站内容来源互联网,如果侵犯您的权益请联系我们删除, 联系方式：448109455@qq.com