hdasync's Introduction

HdAsync

An android asynchronous operation library

HdAsync is an android library to help asynchronous operation easily.

support each step of asynchronous operation flow bind to handler thread looper or thread pool.
support then, both and delay operation.
append can add other async operation to the current flow.
simple and clean

For example

Initialize a synchronous Activity

public class SampleActivity extends Activity {
    @Override
    protected void onCreate(final Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        HdAsync.with(this)
                .then(new HdAsyncAction(getMainLooper()) {
                    @Override
                    public HdAsyncResult call(Object args) {
                        beforeInitAtMainThread(savedInstanceState);
                        return doNext(true);
                    }
                })
                .both(2, new HdAsyncCountDownAction(getMainLooper()) {
                    @Override
                    public HdAsyncCountDownResult call(Object args) {
                        initAtMainThread();
                        return doNextByCountDown(true);
                    }
                }, new HdAsyncCountDownAction(backgroundPool) {
                    @Override
                    public HdAsyncCountDownResult call(Object args) {
                        initAtBackgroundThread();
                        return doNextByCountDown(true);
                    }
                })
                .then(new HdAsyncAction(getMainLooper()) {
                    @Override
                    public HdAsyncResult call(Object args) {
                        afterInitAtMainThread();
                        isInitFinish = true;
                        return doNext(true);
                    }
                })
                .call();
    }
}

Async get data from db and render

HdAsync asyncGetDataFromDb() {
    return HdAsync.with(this)
        .then(new HdAsyncAction(backgroundPool) {
                @Override
                public HdAsyncResult call(Object args) {
                    Data data = getDataFromDb();
                    return doNext(true, data);
                }
            });
}

void render() {
    HdAsync.with(this)
        .append(asyncGetDataFromDb())
        .then(new HdAsyncAction(Looper.getMainLooper()) {
                @Override
                public HdAsyncResult call(Object args) {
                    if ((Data) args) {
                        onRender(data);
                    }
                    return doNext(false);
                }
            })
        .call();
}

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