Error:Execution failed for task ':app:transformClassesAndResourcesWithProguardForDebug'

Question

I must use certain librairy in my project. When I want bebu my application I receive an indication which says to me that my code exceeds 65k method. Thus I decided to use Proguard. But I receive this error. my code of buile.gradle

apply plugin: 'com.android.application'
apply plugin: 'realm-android'

android {
    compileSdkVersion 24
    buildToolsVersion "24.0.0"

    defaultConfig {
        applicationId "transplusafrica.delydress"
        minSdkVersion 19
        targetSdkVersion 24
        versionCode 1
        versionName "1.0"
    }
    buildTypes {
        release {
            minifyEnabled true
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
        debug {
            minifyEnabled true
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    } 
}

dependencies {
    compile fileTree(include: ['*.jar'], dir: 'libs')
    testCompile 'junit:junit:4.12'
    compile 'com.android.support:appcompat-v7:24.0.0'
    compile 'com.android.support:design:24.0.0'
    compile 'com.squareup:otto:1.3.8'
    compile 'com.squareup.retrofit2:retrofit:2.1.0'
    compile 'com.google.code.gson:gson:2.2.4'
    compile 'com.google.android.gms:play-services-maps:9.2.0'
    compile 'com.google.android.gms:play-services-gcm:9.2.0'
   compile 'com.google.android.gms:play-services-location:9.2.0'
 }

I receive this error

Error:Execution failed for task ':app:transformClassesAndResourcesWithProguardForDebug'.

java.io.IOException: proguard.ParseException: Expecting type and name instead of just '' before '(' in line 114 of file 'C:\Users\AMANI\AndroidStudioProjects\DelyDress\app\build\intermediates\proguard-rules\debug\aapt_rules.txt' Warning:Exception while processing task java.io.IOException: proguard.ParseException: Expecting type and name instead of just '' before '(' in line 114 of file 'C:\Users\AMANI\AndroidStudioProjects\DelyDress\app\build\intermediates\proguard-rules\debug\aapt_rules.txt' :app:transformClassesAndResourcesWithProguardForDebug FAILED

Answer 1

In my case it was line in aapt_rules.txt with -keepclassmembers that include my layout file. And after check this layout i'm found empty android:onClick="" param. Removing this solve my problem.