Question: Let's say we have strings\_test.xml, which stores string values for testing and should be shown in a debug-release. When the apk gets build as a release version all values should be change to an empty string e.g. `<string name="test_some_card_text">@string/empty</string>`.

Is there a possibility to achieve this?

As always, thanks in advance.

Answer: 
Yes you can do that inside your app gradle under buildTypes..

```
 buildTypes {
        mybuild {
                 resValue "string", "test_some_card_text", '"test"'
                 resValue "string", "other_text", '"other"'
                }
         debug {
                 resValue "string", "test_some_card_text", '"test"'
                 resValue "string", "other_text", '"other"'
              }
          }

```

Then access it like this.

```
getApplicationContext().getResources().getString(R.string.test_some_card_text);
getApplicationContext().getResources().getString(R.string.other_text);

```

For build you need to select that `build variants` and have to build it.
It is not possible to change the string value after creation of the apk.
But you can assing the value to text or edittext ... etx dynamically after creation of the apk.