CODEWITHSUNDEEP
android
kovacs lorand
kovacs lorand

Reputation: 906

Images in the 'drawable' folder are resized automatically?

I have a 1280x720px image in the res/drawable folder (not the drawable-hdpi, drawable-ldpi, etc. folder). But at runtime the size is 2560x1440px. How is this possible? Does android resize the images in the drawable folder?

Here is the code:

    Bitmap bitmap = BitmapFactory.decodeResource(getResources(), R.drawable.start_image_left);
    int h = bitmap.getHeight(), w = bitmap.getWidth();

I'm testing this on a Motorola Moto G gen2.

Upvotes: 5

Views: 2996

Answers (2)

Biu
Biu

Reputation: 1076

You are correct, Android automatically scales your image based on the current device configuration. If however, you dont want that behaviour, you can create a bitmap resource file, put in the drawable folder and point it to the drawable you want to use like this

<bitmap xmlns:android="http://schemas.android.com/apk/res/android android:src="@drawable/yourDrawableHere" android:gravity="center" />

By specifying the center gravity, android will not scale your image no matter what.

To use this bitmap resource file, in your code, retrieve it like this

Drawable drawable = getResources().getDrawable(R.drawable.yourBitmaoResourceFileName);

Upvotes: 0

Kevin Coppock
Kevin Coppock

Reputation: 134664

There's really no reason you should ever put a bitmap into the root drawable directory. It should typically be used for XML drawables only. Bitmaps in the drawable directory will essentially be handled as if they were in drawable-mdpi (scaled up proportionally for other densities).

If your goal is to have a bitmap image that is the same pixel size on all densities, you need to put it in drawable-nodpi. This will cause it to not be scaled.

Upvotes: 10

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