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Android

Posted by Angel Sosa
Angel Sosa
892 Points

R.layout.activity (R symbol cannot be resolved) ?????

Hello Im new into Android Dev. having issues with R.layout.activity, R symbol cannot be resolved. Someone please help. Thanks!

5 Answers

Syed Sayem
Syed Sayem
11,327 Points

I ran into this issue before, and the way I solved it is to clean the project.

From Android Studio, go to File > Invalidate caches / Restart and then Invalidate and Restart

let me know if that work for you?

Syed Sayem
Syed Sayem
11,327 Points
Syed Sayem
Syed Sayem
11,327 Points

It look like @+id/name is missing. Look at you activity_something.xml file which is under layout folder and see if there any error. Make sure id is tag is look like this - android:id="@+id/passwordField"

    <Button
        android:id="@+id/loginButton"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/passwordField"
        android:layout_alignStart="@+id/passwordField"
        android:layout_below="@+id/passwordField"
        android:text="@string/login_button_label" />
Angel Sosa
Angel Sosa
892 Points
Angel Sosa
Angel Sosa
892 Points

Works like a charm.... Thanks bro!

Angel Sosa
Angel Sosa
892 Points
Angel Sosa
Angel Sosa
892 Points

But now having more problems:

Error:(1) Resource id cannot be an empty string (at 'id' with value '@+id/'). Error:Execution failed for task ':app:processDebugResources'.

com.android.ide.common.process.ProcessException: org.gradle.process.internal.ExecException: Process 'command '/Users/mastechs/Library/Android/sdk/build-tools/23.0.0/aapt'' finished with non-zero exit value 1

?????

Angel Sosa
Angel Sosa
892 Points
Angel Sosa
Angel Sosa
892 Points

Great! I have so much to learn... Thanks brother!