TabLayout_example: A Java repository from Txxyyy

##Tablayout_Example

tablayout和viewpager结合使用的示例以及如何取消viewpager的预加载(当页面可见时才加载数据),使用了Rxandroid来代替AsyncTask

###ScreenShot：

###Viewpager如何取消预加载

主要是重写Fragment的setUserVisibleHint(boolean isVisibleToUser)，根据是否对用户可见来进行操作MainCode

    @Override
     public void setUserVisibleHint(boolean isVisibleToUser) {
      super.setUserVisibleHint(isVisibleToUser);
      if (getUserVisibleHint()){
          isVisible=true;
          onVisible();
      }else {
          isVisible=false;
          onInvisible();
      }
  }

另外还需要对viewpager进行限制：viewpager.setOffscreenPageLimit(1);

###使用RxAndroid替代AsyncTask

    private Observable showLoadingUI() {
      return Observable.create(new Observable.OnSubscribe<String>() {
          @Override
          public void call(Subscriber<? super String> subscriber) {
              try {
                  showLoadingView();
                  Thread.sleep(2500);
                  subscriber.onNext( ""+mCurIndex);
                  subscriber.onCompleted();
                // or do network
              } catch (InterruptedException e) {
                  subscriber.onError(e);
              }
          }
       }).subscribeOn(Schedulers.newThread());
     }

    showLoadingUI().compose(bindToLifecycle())
              .observeOn(AndroidSchedulers.mainThread())
              .subscribe(new Subscriber<String >() {
                  @Override
                  public void onCompleted() {
                      mLoadingView.dismiss();
                      mHasLoadedOnce = true;
                  }

                  @Override
                  public void onError(Throwable e) {
                      mFragmentView.setText("Fragment # 加载失败...");
                  }

                  @Override
                  public void onNext(String s) {
                      mFragmentView.setText("Fragment #" + s);
                  }
              });

参考资料：使用RxJava.Observable取代AsyncTask和AsyncTaskLoader

###Thanks to ：

CatLoadingView (https://github.com/Rogero0o/CatLoadingView)  效果很漂亮
Rxandroid
RxLifeCycle

Txxyyy/TabLayout_example

##Tablayout_Example