无法将图像从应用资产文件夹保存到 Android 中的图库文件夹？

Question

我已经编写了这段代码，它在指定文件夹名称中保存图像，但我想将此图像保存在 Gallery/Specified FolderName/Image中。有人可以帮我吗..... 代码：

saveImageView.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View v) {
            // TODO Auto-generated method stub
            saveImage(getBitmapFromAsset("save_fatwa.jpg"),
                    "save_fatwa.jpg");
        }
    });


private Bitmap getBitmapFromAsset(String strName) {
    AssetManager assetManager = getAssets();
    InputStream istr = null;
    Bitmap bitmap = null;
    try {
        istr = assetManager.open(strName);
        if (istr.equals(null)) {
            Log.i("getBitmapFromAsset isStr", "" + istr);
            bitmap = BitmapFactory.decodeStream(assetManager
                    .open("save_fatwa.jpg"));
        } else {
            bitmap = BitmapFactory.decodeStream(istr);
        }
    } catch (IOException e) {
        e.printStackTrace();
    }
    // Bitmap bitmap = BitmapFactory.decodeStream(istr);
    return bitmap;
}

private void saveImage(Bitmap finalBitmap, String imageName) {
    String root = Environment.getExternalStorageDirectory().toString();
    File myDir = new File(root + "/Jamia Binoria Images");
    myDir.mkdirs();

    // String fname = "save_fatwa.jpg";
    File file = new File(myDir, imageName);
    if (file.exists()) {
        Log.i("file exists", "" + imageName);
        file.delete();
    } else {
        Log.i("file does not exists", "" + imageName);
    }
    try {
        FileOutputStream out = new FileOutputStream(file);
        finalBitmap.compress(Bitmap.CompressFormat.JPEG,90,out);
        // sendBroadcast(new Intent(
        // Intent.ACTION_MEDIA_MOUNTED,
        // Uri.parse("file://" +
        // Environment.getExternalStorageDirectory())));
        out.flush();
        out.close();

    } catch (Exception e) {
        e.printStackTrace();
    }
}

这里我使用了另一个函数从资产文件夹中获取图像。请让我知道在此代码中添加什么以将其保存在 Gallery/FolderName/Image 中

Answer 1

添加权限到 mainfest.xml 文件

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

这是一个link检查这个