Incompatibleclasschangeerror After Updating to Android Build Tools 25.1.6 Gcm/Fcm

IncompatibleClassChangeError after updating to Android Build Tools 25.1.6 GCM / FCM

I used the gradle dependency tree to solve this error for me.

Just run gradle -q app:dependencies --configuration compile
and check the output for entries like this:

+--- com.mcxiaoke.viewpagerindicator:library:2.4.1
|    \--- com.android.support:support-v4:+ -> 24.0.0-beta1 (*)

As Diego Giorgini said this version is too high (>=24).
So update the dependencies in build.gradle like

compile('com.mcxiaoke.viewpagerindicator:library:2.4.1') {
    exclude module: 'support-v4';
}
compile 'com.android.support:support-v4:23.4.0'

Android gcm IncompatibleClassChangeError

Looks like you are using play-services:8.1.0, you should be using 9.0.1, also you should be using the specific play services library eg: play-services-gcm instead of just play-services.

I'd suggest you try firebase-messaging:9.0.1 the implementation is much simpler and it is a superset of the features available in play-services-gcm. See the docs for more.

Error using Push Notification ,java.lang.IncompatibleClassChangeError: android.support.v4.content.ContextCompat Error

**> Got Answer of my question the error is because of using play service

9.0.0

But when we update the play service to 9.4.0 and same as firebase
dependency .and the main issue in my gradle is apply plugin:
'com.google.gms.google-services' will not come at the top of gradle it
will come at the bottom after dependency .And i dont know why this
works fine and my token and context compact issue also got resolved.**

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

    android {
        compileSdkVersion 24
        buildToolsVersion "24.0.2"
        defaultConfig {
            applicationId "com.mss.plix"
            minSdkVersion 16
            targetSdkVersion 24
            versionCode 1
            versionName "1.0"
            testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
            multiDexEnabled true
        }
        //====================Add below two line=============
        dexOptions {
            javaMaxHeapSize "4g" //specify the heap size for the dex process
            preDexLibraries = false //delete the already predexed libraries
        }

        buildTypes {
            release {
                minifyEnabled false
                proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
            }
        }
    }

    ext {
        permissionsDispatcherVersion = '2.1.2'
    }
    dependencies {
        compile fileTree(include: ['*.jar'], dir: 'libs')
        androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
            exclude group: 'com.android.support', module: 'support-annotations'
        })
        compile 'com.android.support.constraint:constraint-layout:1.0.0-alpha7'
        compile 'de.hdodenhof:circleimageview:2.0.0'
        compile 'com.jakewharton:butterknife:7.0.1'
        testCompile 'junit:junit:4.12'
        compile 'de.hdodenhof:circleimageview:2.0.0'
        compile 'com.isseiaoki:simplecropview:1.1.4'
        compile 'com.github.hotchemi:permissionsdispatcher:2.1.3'
        compile 'com.github.aakira:expandable-layout:1.4.1@aar'
        compile 'com.github.hotchemi:permissionsdispatcher:2.1.3'
        apt "com.github.hotchemi:permissionsdispatcher-processor:2.1.3"
        compile project(':library')
       compile 'com.android.support:appcompat-v7:24.2.0'
       compile 'com.android.support:design:24.2.0'
        compile 'com.android.support:recyclerview-v7:24.2.0'
        compile 'com.android.support:cardview-v7:24.2.0'
        compile 'com.google.code.gson:gson:2.6.2'
        compile 'com.squareup.retrofit2:retrofit:2.0.2'
        compile 'com.squareup.retrofit2:converter-gson:2.0.2'
        compile 'com.squareup.okhttp:okhttp:2.5.0'
        compile 'com.android.support:multidex:1.0.1'
        compile 'com.google.android.gms:play-services:9.0.0'
        compile 'com.android.support:support-v4:24.2.1'

    }

apply plugin: 'com.google.gms.google-services'

    repositories {
        jcenter()
    }

it should be like this . :)

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