All com.android.support libraries must use the exact same version specification

[tonycheng93]

when add Room Persistence Library into my project,then i got a problem,it bothers me for a long time.

All com.android.support libraries must use the exact same version specification (mixing versions can lead to runtime crashes). Found versions 25.1.1, 24.0.0. Examples include com.android.support:support-compat:26.0.0 and com.android.support:animated-vector-drawable:25.3.1

And,my support library version is 25.3.1.What is the reason for this problem?Thank you for your help.

[florina-muntenescu]

Make sure you clean and sync your project. Room doesn't have anything to do, for now, with the support libraries.

[nirajsanghvi]

@florina-muntenescu I ran into the same issue, and running a gradle dependency check, it does look like the Room runtime library relies on the support library and is referencing version 26.0.0 of support-annotations and support-core-utils and this causes a conflict if my app still uses version 25.3.1 of the support libraries (I get build errors that go away as soon as I remove the Room runtime dependency from my libraries).

|    +--- android.arch.persistence.room:runtime:1.0.0-alpha9
|    |    +--- android.arch.persistence.room:common:1.0.0-alpha9
|    |    |    \--- com.android.support:support-annotations:26.0.0
|    |    +--- android.arch.persistence.room:support-db:1.0.0-alpha9
|    |    |    \--- com.android.support:support-annotations:26.0.0
|    |    +--- android.arch.persistence.room:support-db-impl:1.0.0-alpha9
|    |    |    +--- com.android.support:support-annotations:26.0.0
|    |    |    \--- android.arch.persistence.room:support-db:1.0.0-alpha9 (*)
|    |    +--- android.arch.core:runtime:1.0.0-alpha9
|    |    |    +--- com.android.support:support-annotations:26.0.0
|    |    |    \--- android.arch.core:common:1.0.0-alpha9
|    |    |         \--- com.android.support:support-annotations:26.0.0
|    |    \--- com.android.support:support-core-utils:26.0.0 (*)

[nirajsanghvi]

cc @yigit since there was a ticket for this on the issue tracker as well. I've posted some more details there: https://issuetracker.google.com/issues/65322413#comment4

As I mentioned there, the easiest way to reproduce this is to create a new project in Android Studio targeting API 25, and then add the alpha9 version of Room. When building an APK, the build will break due to the support library conflict.

[tonycheng93]

@nirajsanghvi thanks,you described the detail error,and now i have to remove the Room library.

[tonycheng93]

@florina-muntenescu I had modified api to 26,and modified support library version to 26.1.0,then the error will not produce.But if i downgrade api to 25,the error will reproduce.

[chriscoderdr]

I was able to make the error go away excluding support dependencies from rom library

implementation("android.arch.persistence.room:runtime:$versions.arch") {
        exclude group: 'com.android.support'
    }
annotationProcessor("android.arch.persistence.room:compiler:$versions.arch") {
    exclude group: 'com.android.support'
}

[Baxxu]

I have:

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation "org.jetbrains.kotlin:kotlin-stdlib-jre7:$kotlin_version"
    implementation 'com.android.support:appcompat-v7:25.4.0'
    implementation 'com.android.support.constraint:constraint-layout:1.0.2'
    // testImplementation 'junit:junit:4.12'
    // androidTestImplementation 'com.android.support.test:runner:1.0.1'
    // androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'
    // implementation 'com.android.support:cardview-v7:25.4.0'

    // Room (use 1.1.0-alpha2 for latest alpha)
    // for ROOM (SQL database)
    implementation ("android.arch.persistence.room:runtime:1.0.0") {
        exclude group: "com.android.support", module: "support-annotations"
    }
    kapt ("android.arch.persistence.room:compiler:1.0.0") {
        exclude group: "com.android.support", module: "support-annotations"
    }
}

But I have an error:

Information:Gradle tasks [:app:generateDebugSources, :app:generateDebugAndroidTestSources, :app:mockableAndroidJar]

Error:Execution failed for task ':app:processDebugManifest'. Manifest merger failed : uses-sdk:minSdkVersion 10 cannot be smaller than version 14 declared in library [android.arch.persistence.room:runtime:1.0.0] C:\Users\Vany.gradle\caches\transforms-1\files-1.1\runtime-1.0.0.aar\962e01d9ce394c0ff499af867e8197af\AndroidManifest.xml as the library might be using APIs not available in 10 Suggestion: use a compatible library with a minSdk of at most 10, or increase this project's minSdk version to at least 14, or use tools:overrideLibrary="android.arch.persistence.room" to force usage (may lead to runtime failures)

I opened AndroidManifest.xml at:

C:\Users\Vany.gradle\caches\transforms-1\files-1.1\runtime-1.0.0.aar\962e01d9ce394c0ff499af867e8197af

<?xml version="1.0" encoding="utf-8"?>
<!--
~ Copyright (C) 2016 The Android Open Source Project
~
~ Licensed under the Apache License, Version 2.0 (the "License");
~ you may not use this file except in compliance with the License.
~ You may obtain a copy of the License at
~
~      http://www.apache.org/licenses/LICENSE-2.0
~
~ Unless required by applicable law or agreed to in writing, software
~ distributed under the License is distributed on an "AS IS" BASIS,
~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
~ See the License for the specific language governing permissions and
~ limitations under the License.
-->
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="android.arch.persistence.room" >

<uses-sdk
    android:minSdkVersion="14"
    android:targetSdkVersion="26" />

**_android:minSdkVersion="14"_** in _"android.arch.persistence.room:runtime:1.0.0"_ so it cannot be used with SDK < 14

[Baxxu]

LOL, I fixed it!

for minSDK = 10

Add it into you app's AndroidManifest.xml

<uses-sdk tools:overrideLibrary="android.arch.persistence.room, android.arch.persistence.db.framework, android.arch.persistence.db, android.arch.core" />

then Alt+Enter on word "tools" in "tools:overrideLibrary" to import xmlns:tools="http://schemas.android.com/tools" So manifest's top will looks like

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools" <!--
    package="My.App">

    <!-- OverrideLibrary FOR ROOM -->
    <uses-sdk tools:overrideLibrary="android.arch.persistence.room, android.arch.persistence.db.framework, android.arch.persistence.db, android.arch.core" />

Then go to build.gradle(Module: app) and add that to your dependencies

    /**
     * START OF
     * ROOM
     */

    // Room (use 1.1.0-alpha2 for latest alpha)
    // for ROOM (SQL database)

    // убираем эти зависимости из зависимостей
    def deleteSomeDependencies = {
        exclude group: "com.android.support", module: "support-annotations"
        exclude group: "com.android.support", module: "support-core-utils"
        exclude group: "com.android.support", module: "support-compat"
    }

    implementation "android.arch.persistence.room:runtime:1.0.0", deleteSomeDependencies
    kapt "android.arch.persistence.room:compiler:1.0.0", deleteSomeDependencies

    /**
     * END OF
     * ROOM
     */

So your build.gradle(app) will look like

apply plugin: 'com.android.application'

apply plugin: 'kotlin-android'

apply plugin: 'kotlin-android-extensions'

// for ROOM (SQL database)
apply plugin: 'kotlin-kapt'

android {
    compileSdkVersion 25
    defaultConfig {
        applicationId "My.App"
        minSdkVersion 10
        targetSdkVersion 25
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation "org.jetbrains.kotlin:kotlin-stdlib-jre7:$kotlin_version"
    implementation 'com.android.support:appcompat-v7:25.4.0'
    implementation 'com.android.support.constraint:constraint-layout:1.0.2'
    // testImplementation 'junit:junit:4.12'
    // androidTestImplementation 'com.android.support.test:runner:1.0.1'
    // androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'
    // implementation 'com.android.support:cardview-v7:25.4.0'

    /**
     * START OF
     * ROOM
     */

    // Room (use 1.1.0-alpha2 for latest alpha)
    // for ROOM (SQL database)

    // убираем эти зависимости из зависимостей
    def deleteSomeDependencies = {
        exclude group: "com.android.support", module: "support-annotations"
        exclude group: "com.android.support", module: "support-core-utils"
        exclude group: "com.android.support", module: "support-compat"
    }

    implementation "android.arch.persistence.room:runtime:1.0.0", deleteSomeDependencies
    kapt "android.arch.persistence.room:compiler:1.0.0", deleteSomeDependencies

    /**
     * END OF
     * ROOM
     */
}

It just lets Gradle Sync to work, but it can crash your app.