SystraceRequestListener.java 文件源码

@Override
public void onRequestFailure(
    ImageRequest request,
    String requestId,
    Throwable throwable,
    boolean isPrefetch) {
  if (!Systrace.isTracing(Systrace.TRACE_TAG_REACT_FRESCO)) {
    return;
  }

  if (mRequestsID.containsKey(requestId)) {
    Pair<Integer, String> entry = mRequestsID.get(requestId);
    Systrace.endAsyncSection(
        Systrace.TRACE_TAG_REACT_FRESCO,
        entry.second,
        entry.first);
    mRequestsID.remove(requestId);
  }
}