Common Android Studio Errors and Their Corresponding Error Messages

If your mistake is:

• in your activity_main.xml, your  <RelativeLayout ...> accidentally has a closing tag of </> instead of </RelativeLayout>

then you will see:

In the example above, the Gradle Console tells you that your error was caused by line 138 of your activity_main.xml:

• AGPBI: {"kind":"error","text":"error: not well-formed (invalid token).","sources":[{"file":"C:\\UsC:\Users\rob_t\AndroidStudioProjects\CourtCounter\app\src\main\res\layout\activity_main.xml:138: error: not well-formed (invalid token).ers\\rob_t\\AndroidStudioProjects\\CourtCounter\\app\\src\\main\\res\\layout\\activity_main.xml","position":{"startLine":137}}],"original":"","tool":"AAPT"}

That one mistake causes 7 errors to show up in your "Messages Gradle Build" window.

**

If your mistake is:

• in your MainActivity.java, you forgot to put a closing semi-colon on line9

then you will see:

In the example above, the Gradle Console tells you that your error was caused by line 9 of your MainActivity.java:

• file or directory 'C:\Users\rob_t\AndroidStudioProjects\CourtCounter\app\src\debug\java', not found
• Compiling with JDK Java compiler API.
• 
  
• C:\Users\rob_t\AndroidStudioProjects\CourtCounter\app\src\main\java\com\example\android\courtcounter\MainActivity.java:9: error: ';' expected
•     int scoreTeamA = 0
•                       ^
• 1 error
• 
  
• Incremental compilation of 1 classes completed in 0.597 secs.
• :app:compileDebugJavaWithJavac FAILED

That one mistake causes 2 errors to show up in your "Messages Gradle Build" window.