[JAVA] A reminder when an aapt.exe error occurs

When I was building the android app, I got an unfamiliar error.

Process 'command 'C:\Users\XXXXXXXXXX\AppData\Local\Android\Sdk\build-tools\24.0.2\aapt.exe'' finished with non-zero exit value 1

I found that the exit code when I ran aapt.exe was not 0, but when I searched for the error, I couldn't find any more logs.

Install Gradle

After investigating, it seems that if you use something called Gradle, you can get a detailed log. (Gradle is a build automation system written in Groovy) So, I tried to install Gradle by referring to the following.

Referenced article: [Java] Gradle installation and basic usage (explained with images)

Check if it is installed.

C:\Users\XXXXXXXX>gradle -v

Gradle 3.2.1

Build time:   2016-11-22 15:19:54 UTC
Revision:     83b485b914fd4f335ad0e66af9d14aad458d2cc5

Groovy:       2.4.7
Ant:          Apache Ant(TM) version 1.9.6 compiled on June 29 2015
JVM:          1.7.0_80 (Oracle Corporation 24.80-b11)
OS:           Windows 8.1 6.3 amd64

Check the build log

Now that Gradle is installed, run the following to check the log.

C:\Users\XXXXXX\AndroidStudioProjects\DataBaseApp2>gradlew assembleDebug --info


Successfully started process 'command 'C:\Users\XXXXXXX\AppData\Local\Android\Sdk\build-tools\24.0.2\aapt.exe''
C:\Users\XXXXXXX\AndroidStudioProjects\DataBaseApp2\app\src\main\res\layout\activity_main.xml:25:32-40: AAPT: String types not allowed (at 't
extColor' with value ' #F5F5F5').

C:\Users\XXXXXXX\AndroidStudioProjects\DataBaseApp2\app\build\intermediates\res\merged\debug\layout\activity_main.xml:18: error: Error: Strin
g types not allowed (at 'textColor' with value ' #F5F5F5').

There is a space in the color code ...! !! !! So I deleted it and rebuilt it.

Referenced article: Corrective action for error Unsupported major.minor version 52.0

Java version in Android Studio

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