AsyncLayoutInflater "비동기 로드 레이아웃" 구현

 //      xml,   Activity.onCreate(xxx)   
AsyncLayoutInflater(this).inflate(R.layout.activity_try_everything, null, object : AsyncLayoutInflater.OnInflateFinishedListener {
      override fun onInflateFinished(view: View, p1: Int, p2: ViewGroup?) {
           setContentView(view)
      }
})

    public void setContentView(@LayoutRes int layoutResID) {
        this.getDelegate().setContentView(layoutResID);
    }

    public void setContentView(View view) {
        this.getDelegate().setContentView(view);
    }

    public void setContentView(View view, LayoutParams params) {
        this.getDelegate().setContentView(view, params);
    }

public AsyncLayoutInflater(@NonNull Context context) {
    //       AsyncLayoutInflater    ，      inflater, handler,   thread
    mInflater = new BasicInflater(context);
    mHandler = new Handler(mHandlerCallback);
    mInflateThread = InflateThread.getInstance();
}

private static final InflateThread sInstance;
//      ，           
   static {
   sInstance = new InflateThread();
   //           
   sInstance.start();
   }

Message.obtain(request.inflater.mHandler, 0, request).sendToTarget()

@UiThread
public void inflate(@LayoutRes int resid, @Nullable ViewGroup parent,
            @NonNull OnInflateFinishedListener callback) {
    if (callback == null) {
        throw new NullPointerException("callback argument may not be null!");
    }
    InflateRequest request = mInflateThread.obtainRequest();
    request.inflater = this;
    request.resid = resid;
    request.parent = parent;
    request.callback = callback;
    mInflateThread.enqueue(request);
}

private ArrayBlockingQueue mQueue = new ArrayBlockingQueue<>(10);

@Override
public void run() {
    while (true) {
        runInner();
    }
}

public E take() throws InterruptedException {
    final ReentrantLock lock = this.lock;
    lock.lockInterruptibly();
    try {
        //        ，       
        while (count == 0)
            notEmpty.await();
        return dequeue();
    } finally {
        lock.unlock();
    }
}

public void runInner() {
     InflateRequest request;
     try {
         //        
         request = mQueue.take();
     } catch (InterruptedException ex) {
         // Odd, just continue
         Log.w(TAG, ex);
         return;
     }
    // 
     try {
         request.view = request.inflater.mInflater.inflate(
                        request.resid, request.parent, false);
     } catch (RuntimeException ex) {
         // Probably a Looper failure, retry on the UI thread
         Log.w(TAG, "Failed to inflate resource in the background! Retrying on the UI" + " thread", ex);
    }
    Message.obtain(request.inflater.mHandler, 0, request).sendToTarget();
}

@Override
public boolean handleMessage(Message msg) {
    InflateRequest request = (InflateRequest) msg.obj;
    if (request.view == null) {
        request.view = mInflater.inflate(request.resid, request.parent, false);
    }
    request.callback.onInflateFinished(request.view, request.resid, request.parent);
    mInflateThread.releaseRequest(request);
    return true;
}

This inflater does not support setting a LayoutInflater.Factory nor LayoutInflater.Factory2. Similarly it does not support inflating layouts that contain fragments.