将图片保存在设备中[Glide Library]

Question

我正在尝试将下载功能添加到我的应用程序中我正在使用Glide Library从他们的url下载图片这是我在设备存储中保存图片但不能正常工作的代码与android 5.0.1和6.0一起工作正常.1但是在另一个Android版本中效果不佳

Toast.makeText(Pop.this, "Please wait ...", Toast.LENGTH_LONG).show();
                    new AsyncTask<FutureTarget<Bitmap>, Void, Bitmap>() {
                        @Override protected Bitmap doInBackground(FutureTarget<Bitmap>... params) {
                            try {
                                return params[0].get();
                                // get needs to be called on background thread
                            } catch (Exception ex) {
                                return null;
                            }
                        }
                        @Override protected void onPostExecute(Bitmap bitmap) {
                            if(bitmap == null) return;
                            MediaStore.Images.Media.insertImage(getContentResolver(), bitmap, "Art_"+System.currentTimeMillis(), "Beschrijving");
                        }
                    }.execute(Glide.with(getApplicationContext()).load(url).asBitmap().diskCacheStrategy(DiskCacheStrategy.SOURCE).into(width, height));

请帮我

Answer 1

1.清单文件中的权限

<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

2.Glide将图像下载为位图

Glide.with(mContext)
         .load("YOUR_URL")
         .asBitmap()
         .into(new SimpleTarget<Bitmap>(100,100) {
             @Override
             public void onResourceReady(Bitmap resource, GlideAnimation glideAnimation)  {
                   saveImage(resource);
             }
         });

3.将位图保存到内存中

private String saveImage(Bitmap image) {
    String savedImagePath = null;

    String imageFileName = "JPEG_" + "FILE_NAME" + ".jpg";
    File storageDir = new File(            Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES)
                       + "/YOUR_FOLDER_NAME");
    boolean success = true;
    if (!storageDir.exists()) {
    success = storageDir.mkdirs();
    }
    if (success) {
        File imageFile = new File(storageDir, imageFileName);
        savedImagePath = imageFile.getAbsolutePath();
        try {
            OutputStream fOut = new FileOutputStream(imageFile);
            image.compress(Bitmap.CompressFormat.JPEG, 100, fOut);
            fOut.close();
        } catch (Exception e) {
            e.printStackTrace();
        }

        // Add the image to the system gallery
        galleryAddPic(savedImagePath);
        Toast.makeText(mContext, "IMAGE SAVED", Toast.LENGTH_LONG).show();
    }
    return savedImagePath;
}

private void galleryAddPic(String imagePath) {
    Intent mediaScanIntent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
    File f = new File(imagePath);
    Uri contentUri = Uri.fromFile(f);
    mediaScanIntent.setData(contentUri);
    sendBroadcast(mediaScanIntent);
}

Answer 2

根据 Akshay Nandwana 的回答，我使用该代码写入内部存储器：

Glide.with(context)
     .asBitmap()
     .load(url)
     .into(new SimpleTarget<Bitmap>() {
         @Override
         public void onResourceReady(Bitmap resource,Transition<? super Bitmap> transition) {
            write(fileName, resource);
         }
     });

这是write方法：

public void write(String fileName, Bitmap bitmap) {
    FileOutputStream outputStream;
    try {
        outputStream = context.openFileOutput(fileName, Context.MODE_PRIVATE);
        bitmap.compress(Bitmap.CompressFormat.JPEG, 100, outputStream);
        outputStream.close();
    } catch (Exception error) {
        error.printStackTrace();
    }
}