Save button- Coding for picture

Question

I have an ImageView in my app, and i also have a button that says "click here to save picture". What the button is supposed to do should be self explanatory. Its supposed to save the ImageView in a new folder in their SD card. I have looked everywhere as to what piece of code can accomplish this. I have found some that are similar, but they wont work for me. If anyone could please help me understand what i need to do, or if they know what code will work, It would be of great help to me. Thanks!

score 0 · Accepted Answer · edited May 23 '17 at 10:34

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Here's a workflow you could use to get the job done:

Upon clicking the button, you fire off an onClick(View) (via XML would be OK)
onClick(View) would have to grab a Bitmap off the ImageView
Furthermore, once you have the Bitmap, you'll have to save it to the SDCARD

Hope that helps out a bit!

edited May 23 '17 at 10:34

Community

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answered Jul 13 '12 at 21:40

karllindmark

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i think i was able to figure it out with your links ninetwozero, and im not getting any more errors, but im not sure if they save succesfully. i dont know how i can check because i dont have an android phone, only the computer emulator, and i tried but couldnt check. thanks for the help! – Philip Jul 14 '12 at 14:31

score 0 · Answer 2 · answered Jul 13 '12 at 21:40

Basically, you'll want to get yourself a resulting Bitmap from the image data, and then write that Bitmap out to a file. Depending on what level of access you have to the content that was placed in the ImageView...

If you have the raw Bitmap, you're done.

If the image was in a resource, use BitmapFactory.decodeResource() to obtain one

If you have a Drawable of the content, draw it into a new Bitmap like so:

Bitmap bmp = Bitmap.createBitmap(drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight(), Config.ARGB_8888);
Canvas canvas = new Canvas(bmp); 
drawable.setBounds(0, 0, canvas.getWidth(), canvas.getHeight());
drawable.draw(canvas);

If you don't have any access to the image content, use ImageView.getDrawingCache() to get a Bitmap of the visible contents. You need to call setDrawingCacheEnabled() for this to work.

Once you have a Bitmap, just use the compress() method to write that image out to a file as a JPG or PNG.

Save button- Coding for picture

2 Answers2