android-resources - w3toppers.com

Android getResources().getDrawable() deprecated API 22

You have some options to handle this deprecation the right (and future proof) way, depending on which kind of drawable you are loading: A) drawables with theme attributes ContextCompat.getDrawable(getActivity(), R.drawable.name); You’ll obtain a styled Drawable as your Activity theme instructs. This is probably what you need. B) drawables without theme attributes ResourcesCompat.getDrawable(getResources(), R.drawable.name, null); You’ll … Read more

Defining custom attrs

Currently the best documentation is the source. You can take a look at it here (attrs.xml). You can define attributes in the top <resources> element or inside of a <declare-styleable> element. If I’m going to use an attr in more than one place I put it in the root element. Note, all attributes share the … Read more

Can the Android drawable directory contain subdirectories?

No, the resources mechanism doesn’t support subfolders in the drawable directory, so yes – you need to keep that hierarchy flat. The directory layout you showed would result in none of the images being available. From my own experiments it seems that having a subfolder with any items in it, within the res/drawable folder, will … Read more

“R cannot be resolved to a variable”? [duplicate]

Dont worry. First you may clean the project, then run the project. If this does not work then follow the following links: Here is the best way to solve this problem: [Android Development- Where is my R.Java file?][2] R.java not regenerating R cannot be resolved – Android error R cannot be resolved to a variable … Read more

How to get a resource id with a known resource name?

If I understood right, this is what you want int drawableResourceId = this.getResources().getIdentifier(“nameOfDrawable”, “drawable”, this.getPackageName()); Where “this” is an Activity, written just to clarify. In case you want a String in strings.xml or an identifier of a UI element, substitute “drawable” int resourceId = this.getResources().getIdentifier(“nameOfResource”, “id”, this.getPackageName()); I warn you, this way of obtaining identifiers … Read more

Android, getting resource ID from string?

@EboMike: I didn’t know that Resources.getIdentifier() existed. In my projects I used the following code to do that: public static int getResId(String resName, Class<?> c) { try { Field idField = c.getDeclaredField(resName); return idField.getInt(idField); } catch (Exception e) { e.printStackTrace(); return -1; } } It would be used like this for getting the value of … Read more

Is there a way to get the source code from an APK file?

R cannot be resolved – Android error

Get resources images from variable

You can define Context inner class MonsterAdapter public class MonsterAdapter extends BaseAdapter{ Context mContext; public MonsterAdapter(Context context, …){ this.mContext = context; … } } then you can use imageView.setImageResource(mContext.getResources().getIdentifier(variableValue, “drawable”, getPackageName()));