r.java-file - w3toppers.com

R file is missing android

In my experience there is a mistake in the xml somewhere. Eclipse will no doubt tell you where. After I fix the error R appears.

Missing R.java file even though project cleaned

This can happen when you have an error in one of your xml files (for example, a resource cannot be found). This can also happen because of using menus (I have had this problem because of menus, and I had to remove them, clean and add them again). And another possible reason is that you … Read more

Fixing Error in styles.xml to generate R.java : No resource found name ‘Theme.AppCompat.Light’

You are trying to use Theme.AppCompat.Light theme which is a library project. You have to reference this library project to your project. Now, at first, check that you have installed this library project as follows… Go Window–>Android SDK Manager then a window named Android SDK Manager will appear as below. If the Android Support Library … Read more

What is the concept behind R.java?

Biggest advantage is in Localization and Providing alternate resources for different screen sizes. e.g you can have a String resource R.string.myname this could be a defined in english in /values-en/strings.xml and in spanish in /values-es/strings.xml System will take care or picking up the right file depending on the locale you just need to use @string/myname … Read more

In Android applications what is the role of “R.java”? [closed]

Every application uses resources such as strings, drawbles, layouts, and styles. Instead of hard coding such resources into an application, one externalizes them and refers to them by ID. The R.java file contains all those resource IDs, whether assigned by the programmer or generated by the sdk.

No generated R.java file in my project [duplicate]

Go to Project and hit Clean. This should, among others, regenerate your R.java file. Also get rid of any import android.R.* statements and then do the clean up I mentioned. Apparently Jonas problem was related to incorrect target build settings. His target build was set to Android 2.1 (SDK v7) where his layout XML used … Read more

Developing for Android in Eclipse: R.java not regenerating

I found this happening to me with a broken layout and everything blows up. Relax, it’s like that old mistake when you first learned programming C where you forget one semicolon and it generates a hundred errors. Many panic, press all the buttons, and makes things worse. Solution Make sure that anything the R. links … Read more

Eclipse giving error, missing R.java file after recent update

After updating to SDK Tools to rev. 22 for the first time, you may need to relaunch Android SDK Manager again and install a new item: Android SDK Build-tools. After installing this, clean your projects and rebuild.