小编use*_*966的帖子

我正在通过 koush https://github.com/koush/AndroidAsync试用该库。

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

AsyncHttpClient.getDefaultInstance().websocket(uri, null, new AsyncHttpClient.WebSocketConnectCallback() {
            @Override
            public void onCompleted(Exception ex, WebSocket webSocket) {
                if (ex != null) {
                    ex.printStackTrace();
                    return;
                }
                webSocket.send("a string");
                webSocket.send(new byte[10]);
                webSocket.setStringCallback(new WebSocket.StringCallback() {
                    public void onStringAvailable(String s) {
                        System.out.println("I got a string: " + s);
                    }
                });
                webSocket.setDataCallback(new DataCallback() {
                    public void onDataAvailable(DataEmitter emitter, ByteBufferList byteBufferList) {
                        System.out.println("I got some bytes!");
                        // note that this data has been read
                        byteBufferList.recycle();
                    }
                });
            }
        }); …

一旦Glide成功渲染了图像，我在更新textview时会看到此错误。

致命异常：java.lang.IllegalStateException：类CustomBinding中必需的DataBindingComponent为null。CustomViewModel中的BindingAdapter不是静态的，需要使用一个从DataBindingComponent检索的对象。如果您不使用带DataBindingComponent的膨胀方法，请使用DataBindingUtil.setDefaultComponent或将所有BindingAdapter方法设为静态。

@BindingAdapter(value = { "android:src", "placeHolder" }, requireAll = false) 
public void setUrl(ImageView imageView, String url, Drawable placeHolder) {
          Glide.with(imageView.getContext())
              .load(url)
              .placeholder(placeHolder)
              .centerCrop()
              .listener(new Listener<String, Drawable>() {
                @Override
                public boolean onException() {
                  viewmodel.setTextVisible(true);// ERROR!
                  return false;
                }

                @Override public boolean onResourceReady() {
                  viewmodel.setTextVisible(false); // ERROR!
                  return false;
                }
              })
              .into(imageView);
        }

public void setTextVisible(boolean visibility) {
    textVisibility = visibility;
    notifyPropertyChanged(BR.textVisibility);
}

    @Bindable 
    public boolean getTextVisible() {
      return textVisibility; 
    }

这是我初始化视图模型并将数据绑定到片段内的方式：

CustomBinding binding =
        DataBindingUtil.inflate(inflater, R.layout.custom, container, 
false);

    CustomViewModel viewModel …