RxJava/RxAndroid : doOnNext

傷城~ 2023-10-17 17:54 61阅读 0赞

**RxJava/RxAndroid : doOnNext**

import android.support.v7.app.AppCompatActivity;
    import android.os.Bundle;
    import android.util.Log;
    
    import io.reactivex.Observable;
    import io.reactivex.Observer;
    import io.reactivex.android.schedulers.AndroidSchedulers;
    import io.reactivex.disposables.Disposable;
    import io.reactivex.functions.Consumer;
    import io.reactivex.schedulers.Schedulers;
    
    public class MainActivity extends AppCompatActivity {
        private String TAG = "输出";
    
        private Observer<Integer> mObserver = new Observer<Integer>() {
            @Override
            public void onSubscribe(Disposable d) {
    
            }
    
            @Override
            public void onNext(Integer i) {
                Log.d(TAG, "onNext:" + i);
            }
    
            @Override
            public void onComplete() {
                Log.d(TAG, "onComplete");
            }
    
            @Override
            public void onError(Throwable e) {
                Log.e(TAG, e.toString(), e);
            }
        };
    
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
    
            Integer[] numbers = new Integer[]{0, 1, 2, 3, 4};
    
            Observable.fromArray(numbers)
                    .takeLast(3)
                    .doOnNext(new Consumer<Integer>() {
                        @Override
                        public void accept(Integer integer) throws Exception {
                            Log.d(TAG, "accept:" + integer);
                        }
                    })
                    .subscribeOn(Schedulers.io())
                    .observeOn(AndroidSchedulers.mainThread())
                    .subscribeWith(mObserver);
        }
    }

output:

01-19 15:01:48.904 11409-11429/zhangphil.book D/输出: accept:2
    01-19 15:01:48.906 11409-11429/zhangphil.book D/输出: accept:3
    01-19 15:01:48.906 11409-11429/zhangphil.book D/输出: accept:4
    01-19 15:01:48.983 11409-11409/zhangphil.book D/输出: onNext:2
    01-19 15:01:48.983 11409-11409/zhangphil.book D/输出: onNext:3
    01-19 15:01:48.983 11409-11409/zhangphil.book D/输出: onNext:4
    01-19 15:01:48.983 11409-11409/zhangphil.book D/输出: onComplete

RxJava/RxAndroid : doOnNext

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