滑行断言:java.lang.IllegalArgumentException:您必须在主线程上调用此方法 [英] Glide assert: java.lang.IllegalArgumentException: You must call this method on the main thread

问题描述

有人使用Glide从后台线程获取图像吗?我不断得到这个断言:

Has anyone used Glide to fetch images from a background thread? I keep getting this assert:

java.lang.IllegalArgumentException: You must call this method on the main thread

但是根据此线程，它应该可以工作:

but according to this thread, it should work:

https://github.com/bumptech/glide/issues/310

但是，除非我从主线程调用它，否则我无法使其正常工作.

Yet, I cannot get it to work, unless I call it from the main thread.

这是我要从主线程执行的操作:

Here's is what I am trying to do from the main thread:

    Glide.get(mContext);
    loadUserImage(userImageUrl);

    // wait 5 seconds before trying again
    int imageLoadingTimeOut = mContext.getResources().getInteger(R.integer.image_loading_time_out);
    if (imageLoadingTimeOut > 0) {
        new Timer().schedule(new TimerTask() {
            @Override
            public void run() {
                if (!mUserImageLoaded) {
                    loadUserImage(userImageUrl);
                }
            }
        }, imageLoadingTimeOut);
    }
}

和loadUserImage:

and the loadUserImage:

private boolean mUserImageLoaded = false;

private void loadUserImage(String userImageUrl) {

    if (userImageUrl != null && !userImageUrl.isEmpty() && !mUserImageLoaded) {
        Glide.with(mContext).using(Cloudinary.getUrlLoader(mContext)).load(userImageUrl).crossFade().listener(new RequestListener<String, GlideDrawable>() {

            @Override
            public boolean onException(Exception e, String model, Target<GlideDrawable> target, boolean isFirstResource) {
                return false;
            }

            @Override
            public boolean onResourceReady(GlideDrawable resource, String model, Target<GlideDrawable> target, boolean isFromMemoryCache, boolean isFirstResource) {
                mImageMessageContent.invalidate();
                mUserImageLoaded = true;
                return false;
            }
        }).into(mImageMessageContent);

    } else {
        mImageMessageContent.setVisibility(View.GONE);
    }
}

mContext只是活动"this"指针.

and mContext is just the activity "this" pointer.

无论如何，我可以从不同于main的线程中使用Glide吗?

Anyway, can I use Glide from a thread different than main?

推荐答案

Glide的into(ImageView)方法要求您仅在主线程上调用它，但是当您将加载传递给Timer时，它将在以下位置执行background线程.

The into(ImageView) method of Glide requires you to call it only on main thread, but when you pass the loading to a Timer it will be executed in a background thread.

您可以做的是通过调用get()而不是into()来检索位图，然后通过调用setImageBitmap()在ImageView上设置bitmap.

What you can do is to retrieve a bitmap by calling get() instead of into() and then set that bitmap on the ImageView by calling setImageBitmap().

Glide.with(getApplicationContext())
     .load("your url")
     .asBitmap()
     .into(new BitmapImageViewTarget(imgView) {
      @Override
      protected void setResource(Bitmap resource) {
       //Play with bitmap
        super.setResource(resource);
      }
    });

您还可以查看此文档了解更多信息.

You can also take a look at this document for more information.

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