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The file R.java contains all the resource IDs for an application. It is generated by the Android Asset Packaging Tool. R.java is located in the res/ directory. The file has a section titled ‘Resource IDs’ and contains many different resources that an application may use. Most layouts in the framework use TextView IDs; they are …

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If you’ve ever wondered how your phone sends and receives text messages in real-time, you’re not alone. RTT, or real-time text, is an excellent feature of Android phones. Real-time text allows you to read your messages as soon as they’re created. It can also be a useful feature if you need to make an emergency …

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