NetworkUtil.java 文件源码

@Nullable
public static Bitmap fromCache (Context context, String url) {
    RequestCreator creator = buildPicasso(context, url)
            .networkPolicy(NetworkPolicy.OFFLINE, NetworkPolicy.OFFLINE)
            .memoryPolicy(MemoryPolicy.NO_CACHE, MemoryPolicy.NO_STORE);
    try {
        return creator.get();
    } catch (IOException e) {
        e.printStackTrace();
        return null;
    }
}