RxJava2 / RxAndroid2操作符interval：每隔若干时间发射信号

╰+攻爆jí腚メ 2024-02-17 22:11 26阅读 0赞

**RxJava2 / RxAndroid2操作符interval：每隔若干时间发射信号**

Interval每隔一定时间发射一个整数，从0开始，例如：

package zhangphil.app;
    
    import android.os.Bundle;
    import android.support.annotation.Nullable;
    import android.support.v7.app.AppCompatActivity;
    import android.util.Log;
    
    import java.util.concurrent.TimeUnit;
    
    import io.reactivex.Observable;
    import io.reactivex.android.schedulers.AndroidSchedulers;
    import io.reactivex.disposables.CompositeDisposable;
    import io.reactivex.observers.DisposableObserver;
    import io.reactivex.schedulers.Schedulers;
    
    
    public class MainActivity extends AppCompatActivity {
        private final String TAG = getClass().getSimpleName();
        private CompositeDisposable mCompositeDisposable = new CompositeDisposable();
        ;
    
        @Override
        public void onCreate(@Nullable Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            test();
        }
    
        private void test() {
            mCompositeDisposable.add(Observable.interval(0, 5, TimeUnit.SECONDS)
                    .subscribeOn(Schedulers.io())
                    .observeOn(AndroidSchedulers.mainThread())
                    .subscribeWith(getObserver(1)));
        }
    
        private DisposableObserver getObserver(final int id) {
            DisposableObserver disposableObserver = new DisposableObserver<Object>() {
                @Override
                public void onNext(Object o) {
                    Log.d(id + TAG, "#####开始#####");
                    Log.d(id + "数据", String.valueOf(o));
                    Log.d(id + TAG, "#####结束#####");
                }
    
                @Override
                public void onComplete() {
                    Log.d(id + TAG, "onComplete");
                }
    
                @Override
                public void onError(Throwable e) {
                    Log.e(id + TAG, e.toString(), e);
                }
            };
    
            return disposableObserver;
        }
    
        @Override
        protected void onDestroy() {
            super.onDestroy();
    
            // 如果退出程序，就清除后台任务
            mCompositeDisposable.clear();
        }
    }

代码输出：

05-18 17:10:58.436 8466-8466/? D/1MainActivity: #####开始#####
    05-18 17:10:58.436 8466-8466/? D/1数据: 0
    05-18 17:10:58.436 8466-8466/? D/1MainActivity: #####结束#####
    05-18 17:10:58.439 8466-8466/? W/Activity: AppLock checkAppLockState locked:false verifying:false pkgName = zhangphil.app isInMultiWindowMode:false
    05-18 17:10:58.457 8466-8502/? I/Adreno: QUALCOMM build                   : 5451aae, I25dc76dc3f
                                             Build Date                       : 01/02/17
                                             OpenGL ES Shader Compiler Version: XE031.09.00.03
                                             Local Branch                     : 
                                             Remote Branch                    : refs/tags/AU_LINUX_ANDROID_LA.UM.5.5.R1.07.00.00.269.013
                                             Remote Branch                    : NONE
                                             Reconstruct Branch               : NOTHING
    05-18 17:10:58.478 8466-8502/? I/OpenGLRenderer: Initialized EGL, version 1.4
    05-18 17:10:58.478 8466-8502/? D/OpenGLRenderer: Swap behavior 1
    05-18 17:10:58.482 8466-8466/? D/ViewRootImpl@15edd34[MainActivity]: MSG_RESIZED_REPORT: ci=Rect(0, 81 - 0, 0) vi=Rect(0, 81 - 0, 0) or=1
    05-18 17:10:58.482 8466-8466/? D/ViewRootImpl@15edd34[MainActivity]: MSG_WINDOW_FOCUS_CHANGED 1
    05-18 17:10:58.482 8466-8466/? I/InputMethodManager: [IMM] startInputInner - mService.startInputOrWindowGainedFocus
    05-18 17:10:58.485 8466-8502/? D/libGLESv1: STS_GLApi : DTS is not allowed for Package : zhangphil.app
    05-18 17:10:58.488 8466-8479/? D/InputTransport: Input channel constructed: fd=73
    05-18 17:11:03.321 8466-8466/zhangphil.app D/1MainActivity: #####开始#####
    05-18 17:11:03.321 8466-8466/zhangphil.app D/1数据: 1
    05-18 17:11:03.321 8466-8466/zhangphil.app D/1MainActivity: #####结束#####
    05-18 17:11:08.321 8466-8466/zhangphil.app D/1MainActivity: #####开始#####
    05-18 17:11:08.321 8466-8466/zhangphil.app D/1数据: 2
    05-18 17:11:08.322 8466-8466/zhangphil.app D/1MainActivity: #####结束#####
    05-18 17:11:13.321 8466-8466/zhangphil.app D/1MainActivity: #####开始#####
    05-18 17:11:13.321 8466-8466/zhangphil.app D/1数据: 3
    05-18 17:11:13.322 8466-8466/zhangphil.app D/1MainActivity: #####结束#####
    05-18 17:11:18.321 8466-8466/zhangphil.app D/1MainActivity: #####开始#####
    05-18 17:11:18.321 8466-8466/zhangphil.app D/1数据: 4
    05-18 17:11:18.321 8466-8466/zhangphil.app D/1MainActivity: #####结束#####
    05-18 17:11:23.321 8466-8466/zhangphil.app D/1MainActivity: #####开始#####
    05-18 17:11:23.322 8466-8466/zhangphil.app D/1数据: 5
    05-18 17:11:23.322 8466-8466/zhangphil.app D/1MainActivity: #####结束#####
    05-18 17:11:28.321 8466-8466/zhangphil.app D/1MainActivity: #####开始#####
    05-18 17:11:28.322 8466-8466/zhangphil.app D/1数据: 6
    05-18 17:11:28.322 8466-8466/zhangphil.app D/1MainActivity: #####结束#####