Fix 'mobile: getAppStrings' method: add missing 'stringFile' parameter

[cobaltvo]

Context

• Java client (io.appium:java-client, 10.1.1)
• Appium server (appium, 3.5.2)
• UiAutomator driver (appium-uiautomator2-driver, 8.0.0)

The problem likely persists in the latest versions of the libraries as well.

Problem

When calling getAndroidDriver().getAppStringMap(language, stringFile) from the Java client, the stringFile parameter is ignored. This happens because the getStrings method in appium-android-driver doesn't pass the custom stringFile path down to extractStringsFromResources. As a result, Appium falls back to pulling the APK from the device every single time application string resources are requested. On low-performance devices or slower networks, this dramatically slows down test execution and consumes unnecessary bandwidth.

Solution

• Merged the custom stringFile path into the existing this.opts object using the spread operator ({ ...this.opts, app: stringFile }).
• This ensures that the custom APK path is respected while keeping all other driver options intact.

[linux-foundation-easycla]

The committers listed above are authorized under a signed CLA.

• ✅ login: cobaltvo / name: Cobalt (1f669c0)