gradle - Android transform classes with dex for debug -


i run firebase database , have error. have apply plugin: 'com.google.gms.google-services', error. did not error when first ran program error

my error:

error:execution failed task ':app:transformclasseswithdexfordebug'. > com.android.build.api.transform.transformexception: com.android.ide.common.process.processexception: java.util.concurrent.executionexception: com.android.dex.dexexception: multiple dex files define lcom/google/android/gms/common/api/zza;

build.gradle

apply plugin: 'com.android.application'   android { compilesdkversion 26 buildtoolsversion "26.0.1" defaultconfig {     applicationid "com.yavuzoktay.foodapp"     minsdkversion 19     targetsdkversion 26     versioncode 1     versionname "1.0"     testinstrumentationrunner "android.support.test.runner.androidjunitrunner" }  buildtypes {     release {         minifyenabled false         proguardfiles getdefaultproguardfile('proguard-android.txt'), 'proguard-rules.pro'     } }  }   dependencies { compile filetree(dir: 'libs', include: ['*.jar']) androidtestcompile('com.android.support.test.espresso:espresso-core:2.2.2', {     exclude group: 'com.android.support', module: 'support-annotations' })  //add library   compile 'com.android.support:appcompat-v7:26.+' compile 'com.android.support.constraint:constraint-layout:1.0.2' compile 'com.google.firebase:firebase-core:9.0.0' compile 'com.google.firebase:firebase-database:9.0.0' compile 'info.hoang8f:fbutton:1.0.5' compile 'com.rengwuxian.materialedittext:library:2.1.4' compile 'com.android.support:cardview-v7:26.+' compile 'com.android.support:recyclerview-v7:26.+' compile 'com.squareup.picasso:picasso:2.5.2' compile 'com.firebaseui:firebase-ui-database:1.2.0' compile 'com.android.support:design:26.+' testcompile 'junit:junit:4.12'       }    apply plugin: 'com.google.gms.google-services'

your advice important me

thank !

you using different versions of same libraries:

compile 'com.google.firebase:firebase-core:9.0.0' compile 'com.google.firebase:firebase-database:9.0.0' compile 'com.firebaseui:firebase-ui-database:1.2.0'

as can read here there dependency between firebaseui , firebase libraries:

firebaseui version  firebase/play services version 2.3.0               11.0.4 2.2.0               11.0.4 2.1.1               11.0.2 2.0.1               11.0.1 .....               ..... 1.2.0               10.2.0

use same version avoid these issue.


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