android - 使用 Glide 将图片保存到存储

Question

我正在尝试向我的应用添加下载功能，我正在使用Glide Library从他们的URL加载图片，使用下面的代码，我可以将图片保存到设备存储中，但它没有按我预期的那样工作。

                    new AsyncTask<FutureTarget<Bitmap>, Void, Bitmap>() {
                        @Override protected Bitmap doInBackground(FutureTarget<Bitmap>... params) {
                            try {
                                return params[0].get();
                            } catch (Exception ex) {
                                return null;
                            }
                        }
                        @Override protected void onPostExecute(Bitmap bitmap) {
                            if(bitmap == null) return;
                            MediaStore.Images.Media.insertImage(getContentResolver(), bitmap, "Art_"+System.currentTimeMillis());
                        }
                    }.execute(Glide.with(getApplicationContext()).load(url).asBitmap().diskCacheStrategy(DiskCacheStrategy.SOURCE).into(width, height));

谁能帮我解决这个问题？

Answer 1

更新

1. list 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" />

1. 需要协程做一些后台工作

implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-android:1.3.9'

1. 滑动以获取位图形式的图像

CoroutineScope(Dispatchers.IO).launch {
    saveImage(Glide.with(this@MainActivity)
        .asBitmap()
        .load("https://i.imgur.com/4HFRb2z.jpg") // sample image
        .placeholder(android.R.drawable.progress_indeterminate_horizontal) // need placeholder to avoid issue like glide annotations
        .error(android.R.drawable.stat_notify_error) // need error to avoid issue like glide annotations
        .submit()
        .get())
}

1. 将图像保存在新创建的具有特定名称的文件夹中

private fun saveImage(image: Bitmap): String? {
        var savedImagePath: String? = null
        val imageFileName = "JPEG_" + "FILE_NAME" + ".jpg"
        val storageDir = File(
            Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES)
                .toString() + "/YOUR_FOLDER_NAME"
        )
        var success = true
        if (!storageDir.exists()) {
            success = storageDir.mkdirs()
        }
        if (success) {
            val imageFile = File(storageDir, imageFileName)
            savedImagePath = imageFile.getAbsolutePath()
            try {
                val fOut: OutputStream = FileOutputStream(imageFile)
                image.compress(Bitmap.CompressFormat.JPEG, 100, fOut)
                fOut.close()
            } catch (e: Exception) {
                e.printStackTrace()
            }

            // Add the image to the system gallery
            galleryAddPic(savedImagePath)
            //Toast.makeText(this, "IMAGE SAVED", Toast.LENGTH_LONG).show() // to make this working, need to manage coroutine, as this execution is something off the main thread
        }
        return savedImagePath
    }

1. 将图像添加到画廊并发送广播(不提太多，因为这是不可能的)

 private fun galleryAddPic(imagePath: String?) {
        imagePath?.let { path ->
            val mediaScanIntent = Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE)
            val f = File(path)
            val contentUri: Uri = Uri.fromFile(f)
            mediaScanIntent.data = contentUri
            sendBroadcast(mediaScanIntent)   
        }
    }

原创

1. list 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.滑动下载图片为位图

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

1. 将位图保存到你的内存中

    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);
    }