RxAndroid2 / RxJava2简单的CompletableObserver

喜欢ヅ旅行 2024-02-17 22:07 11阅读 0赞

**RxAndroid2 / RxJava2简单的CompletableObserver**

CompletableObserver简单的用法跟踪一个任务的结束，不处理复杂的数据传导，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.Callable;
    
    import io.reactivex.Completable;
    import io.reactivex.CompletableObserver;
    import io.reactivex.android.schedulers.AndroidSchedulers;
    import io.reactivex.disposables.Disposable;
    import io.reactivex.schedulers.Schedulers;
    
    public class MainActivity extends AppCompatActivity {
        private final String TAG = getClass().getSimpleName();
    
        @Override
        public void onCreate(@Nullable Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
    
            test();
        }
    
        private void test() {
            Completable.fromCallable(new Callable<Object>() {
                @Override
                public Object call() throws Exception {
                    try {
                        Thread.sleep(5000);
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
    
                    Log.d(TAG, "任务结束！");
    
                    return null;
                }
            }).subscribeOn(Schedulers.io())
                    .observeOn(AndroidSchedulers.mainThread())
                    .subscribe(getCompletableObserver());
        }
    
        private CompletableObserver getCompletableObserver() {
            return new CompletableObserver() {
                @Override
                public void onSubscribe(Disposable d) {
                    Log.d(TAG, "onSubscribe " + System.currentTimeMillis());
                }
    
                @Override
                public void onComplete() {
                    Log.d(TAG, "onComplete " + System.currentTimeMillis());
                }
    
                @Override
                public void onError(Throwable e) {
    
                }
            };
        }
    }

代码运行输出：

05-16 14:01:20.908 12292-12292/zhangphil.app D/MainActivity: onSubscribe 1494914480908
    05-16 14:01:20.945 12292-12292/zhangphil.app D/InputTransport: Input channel constructed: fd=73
    05-16 14:01:20.945 12292-12292/zhangphil.app D/ViewRootImpl@99677a6[MainActivity]: setView = DecorView@de9b5e7[MainActivity] touchMode=true
    05-16 14:01:20.949 12292-12292/zhangphil.app W/Activity: AppLock checkAppLockState locked:false verifying:false pkgName = zhangphil.app isInMultiWindowMode:false
    05-16 14:01:20.985 12292-12292/zhangphil.app D/ViewRootImpl@99677a6[MainActivity]: MSG_RESIZED_REPORT: ci=Rect(0, 81 - 0, 0) vi=Rect(0, 81 - 0, 0) or=1
    05-16 14:01:20.986 12292-12292/zhangphil.app D/ViewRootImpl@99677a6[MainActivity]: MSG_WINDOW_FOCUS_CHANGED 1
    05-16 14:01:20.986 12292-12292/zhangphil.app I/InputMethodManager: [IMM] startInputInner - mService.startInputOrWindowGainedFocus
    05-16 14:01:20.988 12292-12292/zhangphil.app D/InputTransport: Input channel constructed: fd=74
    05-16 14:01:25.911 12292-23777/zhangphil.app D/MainActivity: 任务结束！
    05-16 14:01:25.912 12292-12292/zhangphil.app D/MainActivity: onComplete 1494914485912