Android Paging Library Tutorial using Retrofit – Android Coding by DMTechnolab

The package The trap.Simplified coding.androidpagingexample;

Import Android.Arch.Paging.PageKeyedDataSource;

Import Android.Support.Annotation.No no;

Import Android.Useful.Log;

Import Retrofit 2.Call out;

Import Retrofit 2.call back;

Import Retrofit 2.Feedback;

public class Itemdotsource Is spread PageKeyedDataSource<Maximum Marks, Item> {{

// a page size we want

public Fixed The last int page size = = 50;

// We start with the first page which is 1

Private Fixed The last int First page = = 1;

// we need to fetch from stackoverflow

Private Fixed The last String site name = = “stack Overflow”;

// It will be called once to load the initial data

@Override

public Zero burden()@No no Loadinfliterams<Maximum Marks> The ultimate, @No no The last LoadInitialCallback<Maximum Marks, Item> call back) {{

Retrofitclient.get Instance())

.Bring fire()).getAnswers()First page, page size, site name)

.Begrudge()New call back<StackApiResponse>()) {{

@Override

public Zero Treason()Call out<StackApiResponse> Call, Feedback<StackApiResponse> Feedback) {{

If ()Feedback.Body()) ! = Invalid) {{

call back.onResult()Feedback.Body()).item, Invalid, First page + 1);

}

}

@Override

public Zero Failure()Call out<StackApiResponse> Call, Throwable T) {{

}

});

}

// it will load the previous page

@Override

public Zero burden()@No no The last Loadparts<Maximum Marks> Para, @No no The last Load callback<Maximum Marks, Item> call back) {{

Retrofitclient.get Instance())

.Bring fire()).getAnswers()Para.The key, page size, site name)

.Begrudge()New call back<StackApiResponse>()) {{

@Override

public Zero Treason()Call out<StackApiResponse> Call, Feedback<StackApiResponse> Feedback) {{

// if the current page is more than one

// We’re reducing the page count

// and no previous page

Maximum Marks Proximate = = ()The ultimate.The key > 1) The Para.The key – 1 : Invalid;

If ()Feedback.Body()) ! = Invalid) {{

// Passing loaded data

// and previous page’s

call back.onResult()Feedback.Body()).item, Nearby);

}

}

@Override

public Zero Failure()Call out<StackApiResponse> Call, Throwable T) {{

}

});

}

// it will load the next page

@Override

public Zero Later()@No no The last Loadparts<Maximum Marks> The ultimate, @No no The last Load callback<Maximum Marks, Item> call back) {{

Retrofitclient.get Instance())

.Bring fire())

.getAnswers()The ultimate.The key, page size, site name)

.Begrudge()New call back<StackApiResponse>()) {{

@Override

public Zero Treason()Call out<StackApiResponse> Call, Feedback<StackApiResponse> Feedback) {{

If ()Feedback.Body()) ! = Invalid) {{

// if the next page in the response is

// Next page number increase

Maximum Marks The key = = Feedback.Body()).is_Excess The The ultimate.The key + 1 : Invalid;

// Passing loaded data and next page value

call back.onResult()Feedback.Body()).item, The key);

}

}

@Override

public Zero Failure()Call out<StackApiResponse> Call, Throwable T) {{

}

});

}

}