Android Studio: Save Image In Sd Card

I keep a school project dealing with a ListView filled with images hosted on a server. When someone selects an image from the list, this is shown by 'original' size in another layo

Solution 1:

First, you need to get your Bitmap. You can already have it as an object Bitmap, or you can try to get it from the ImageView such as:

BitmapDrawabledrawable= (BitmapDrawable) mImageView1.getDrawable();
Bitmapbitmap= drawable.getBitmap();

Then you must get to directory (a File object) from SD Card such as:

FilesdCardDirectory= Environment.getExternalStorageDirectory();

Next, create your specific file for image storage:

Fileimage=newFile(sdCardDirectory, "test.png");

After that, you just have to write the Bitmap thanks to its method compress such as:

booleansuccess=false;

// Encode the file as a PNG image.
FileOutputStream outStream;
try {

    outStream = newFileOutputStream(image);
    bitmap.compress(Bitmap.CompressFormat.PNG, 100, outStream); 
    /* 100 to keep full quality of the image */

    outStream.flush();
    outStream.close();
    success = true;
} catch (FileNotFoundException e) {
    e.printStackTrace();
} catch (IOException e) {
    e.printStackTrace();
}

Finally, just deal with the boolean result if needed. Such as:

if (success) {
    Toast.makeText(getApplicationContext(), "Image saved with success",
            Toast.LENGTH_LONG).show();
} else {
    Toast.makeText(getApplicationContext(),
            "Error during image saving", Toast.LENGTH_LONG).show();
}

Don't forget to add the following permission in your Manifest:

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

Solution 2:

It will be better to create a Dialog to let the user select where they want the photo to be store at. Remember there are a ton of android devices and they might vary.