【Android使用EventBus传递事件】EventBus使用过程很简单
EventBus官网
1.引入
// module.app build.gradle
dependencies {
//...
implementation 'org.greenrobot:eventbus:3.2.0'
}
2.创建Event
public class MessageEvent {
public final String message;
public MessageEvent(String message) {
this.message = message;
}
}
3.设置监听和声明周期,以MainActivity的片段为例
@Subscribe(threadMode = ThreadMode.MAIN)
public void onMessageEvent(MessageEvent event) {
Toast.makeText(getBaseContext(), event.message, Toast.LENGTH_LONG).show();
}@Override
protected void onStart() {
super.onStart();
EventBus.getDefault().register(this);
}@Override
protected void onStop() {
EventBus.getDefault().unregister(this);
super.onStop();
}
4.发送Event,这里在Application中模拟了一个异步任务
new Thread(new Runnable() {
@Override
public void run() {
try {
Thread.sleep(3000);
EventBus.getDefault().post(new MessageEvent("Hello bro"));
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}).start();
`
