Glide 加载图片保存至本地，加载回调监听

Glide 加载图片使用到的两个记录

1.PNG

Glide 加载图片保存至本地指定路径

/**
         * Glide 加载图片保存到本地
         *
         * imgUrl 图片地址
         * imgName 图片名称
         */
        Glide.with(context).load(imgUrl).asBitmap().toBytes().into(new SimpleTarget<byte[]>() {
            @Override
            public void onResourceReady(byte[] bytes, GlideAnimation<? super byte[]> glideAnimation) {
                try {
                    savaBitmap(imgName, bytes);
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        });

// 保存图片到手机指定目录
    public void savaBitmap(String imgName, byte[] bytes) {
        if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {
            String filePath = null;
            FileOutputStream fos = null;
            try {
                filePath = Environment.getExternalStorageDirectory().getCanonicalPath() + "/MyImg";
                File imgDir = new File(filePath);
                if (!imgDir.exists()) {
                    imgDir.mkdirs();
                }
                imgName = filePath + "/" + imgName;
                fos = new FileOutputStream(imgName);
                fos.write(bytes);
                Toast.makeText(context, "图片已保存到" + filePath, Toast.LENGTH_SHORT).show();
            } catch (IOException e) {
                e.printStackTrace();
            } finally {
                try {
                    if (fos != null) {
                        fos.close();
                    }
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        } else {
            Toast.makeText(context, "请检查SD卡是否可用", Toast.LENGTH_SHORT).show();
        }
    }

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Glide 加载图片回调方法

Glide.with(context).load(imgUrl)
                .listener(new RequestListener<String, GlideDrawable>() {
                    @Override
                    public boolean onException(Exception e, String model,
                                               Target<GlideDrawable> target,
                                               boolean isFirstResource) {
                        // 可替换成进度条
                        Toast.makeText(context, "图片加载失败", Toast.LENGTH_SHORT).show();
                        return false;
                    }

                    @Override
                    public boolean onResourceReady(GlideDrawable resource, String model,
                                                   Target<GlideDrawable> target,
                                                   boolean isFromMemoryCache,
                                                   boolean isFirstResource) {
                        // 图片加载完成，取消进度条
                        Toast.makeText(context, "图片加载成功", Toast.LENGTH_SHORT).show();
                        return false;
                    }
                }).error(R.mipmap.ic_launcher_round)
                .diskCacheStrategy(DiskCacheStrategy.ALL)
                .into(imageView);