I have an image res/drawable/test.png (R.drawable.test).
I want to pass this image to a function which accepts Drawable, e.g. mButton.setCompoundDrawables().
So how can I convert an image resource to a Drawable?
Your Activity should have the method getResources. Do:
Drawable myIcon = getResources().getDrawable( R.drawable.icon );
As of API version 21 this method is deprecated and can be replaced with:
Drawable myIcon = AppCompatResources.getDrawable(context, R.drawable.icon);
If you need to specify a custom theme, the following will apply it, but only if API is version 21 or greater:
Drawable myIcon = ResourcesCompat.getDrawable(getResources(), R.drawable.icon, theme);
This code is deprecated:
Drawable drawable = getResources().getDrawable( R.drawable.icon );
Use this instead:
Drawable drawable = ContextCompat.getDrawable(getApplicationContext(),R.drawable.icon);
ResourcesCompat.getDrawable(getResources(), R.drawable.icon, null); (where the 3rd param is an optional Theme instance).The getDrawable (int id) method is deprecated as of API 22.
Instead you should use the getDrawable (int id, Resources.Theme theme) for API 21+
Code would look something like this.
Drawable myDrawable;
if(android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.LOLLIPOP){
myDrawable = context.getResources().getDrawable(id, context.getTheme());
} else {
myDrawable = context.getResources().getDrawable(id);
}
getResources().getDrawable(R.drawable.ic_warning_80dp, context?.theme)I would just like to add that if you are getting "deprecated" message when using getDrawable(...) you should use the following method from the support library instead.
ContextCompat.getDrawable(getContext(),R.drawable.[name])
You do not have to use getResources() when using this method.
This is equivalent to doing something like
Drawable mDrawable;
if(android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.LOLLIPOP){
mDrawable = ContextCompat.getDrawable(getContext(),R.drawable.[name]);
} else {
mDrawable = getResources().getDrawable(R.id.[name]);
}
This works on both pre and post Lollipop versions.
Get Drawable from vector resource irrespective of, whether its vector or not:
AppCompatResources.getDrawable(context, R.drawable.icon);
Note:
ContextCompat.getDrawable(context, R.drawable.icon); will produce android.content.res.Resources$NotFoundException for vector resource.
If you are trying to get the drawable from the view where the image is set as,
ivshowing.setBackgroundResource(R.drawable.one);
then the drawable will return only null value with the following code...
Drawable drawable = (Drawable) ivshowing.getDrawable();
So, it's better to set the image with the following code, if you wanna retrieve the drawable from a particular view.
ivshowing.setImageResource(R.drawable.one);
only then the drawable will we converted exactly.
If you are inheriting from a fragment you can do:
Drawable drawable = getActivity().getDrawable(R.drawable.icon)