public void loadFirstPage(){
  mPage=1;
  if (mPostArrayList.isEmpty()) {
    showLoadingView();
    mPreviousPostNum=0;
    loadPost(mPage,false);
  }
 else   hideLoadingView();
}

public void loadFirstPage ( ) { mPage = 1 ; if ( mPostArrayList . isEmpty ( ) ) { showLoadingView ( ) ; mPreviousPostNum = 0 ; loadPost ( mPage , false ) ; } else hideLoadingView ( ) ; }
some method to control the page of categories
