changelog

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Pre-load data before Activity opens, and display data on UI after UI initialization. Speedup Activity launch

You can start a PreLoader everywhere and start to listen data which loaded by the PreLoader with preLoaderId

• if DataLoader.loadData() is not completed, then DataListener.onDataArrived() will be called after the data load is completed

• if DataLoader.loadData() is completed, then DataListener.onDataArrived() called immediately

Continuous optimization, welcome watch, star!

demo download

1. Pre-load data in Application.onCreate for HomePageActivity to reduce the user waiting time in HomePageActivity initialization

2. Pre-load data before context.startActivity(), and display data after activity UI are initialized

3. Pre-load data for complex UI Activity (UI initialization cost too much time)

4. Pre-load data for next page of ListView/RecyclerView before pull to load more

• support network data, network images, local images, database queries, and file I/O

• support for cross-activity pre-loading

• support pull-down refresh (DataLoader reloads once, after loading completes, callback for all DataListener)

• supports custom thread-pool

• support one loader (DataLoader) for multiple listeners (DataListener)

• support multiple preload tasks for an Activity

• support for add/remove listener dynamically

1. add dependencies in build.gradle

dependencies{compile 'com.billy.android:pre-loader:x.x.x' }

2. start a pre-load

intpreLoaderId = PreLoader.preLoad(newLoader()); Intentintent = newIntent(this, PreLoadBeforeLaunchActivity.class); intent.putExtra("preLoaderId", preLoaderId); startActivity(intent); //DataLoader, mock as load data from networkclassLoaderimplementsDataLoader<String>{@OverridepublicStringloadData(){try{Thread.sleep(600)} catch (InterruptedExceptionignored){} return"data from network server"} }

3. Listen data after UI initialization in Activity/Fragment/View

PreLoader.listenData(preLoaderId, newListener()); //after data load completed，DataListener.onDataArrived(...) will be called to process dataclassListenerimplementsDataListener<String>{@OverridepublicvoidonDataArrived(Stringdata){Toast.makeText(activity, data, Toast.LENGTH_SHORT).show()} }

4. Refresh data: DataLoader.loadData() will be called, and DataListener.onDataArrived() will be called for all listeners

PreLoader.refresh(preLoaderId);

5. Destroy the PreLoader object if you do not need it(eg. Activity is destroyed)

PreLoader.destroy(preLoaderId);

CC framework comes with AOP at the component level: when component is calling for start an activity, you can start a pre-load for it. So, it is not need to do pre-load work in every place where you want to start the Activity.

1. define a component for open the activity

publicclassComponentAimplementsIComponent{@OverridepublicStringgetName(){return"demo.ComponentA"} @OverridepublicbooleanonCall(CCcc){intpreLoaderId = PreLoader.preLoad(newLoader()); Intentintent = newIntent(this, PreLoadBeforeLaunchActivity.class); intent.putExtra("preLoaderId", preLoaderId); startActivity(intent); CC.sendCCResult(cc.getCallId(), CCResult.success()); returnfalse} }

call that component by CC to open activity

// pre-load is needless here, the logistic of component are all inside that component itselfCC.obtainBuilder("demo.ComponentA").build().call();