Failed to resolve com android support appcompat-v7 28 0

Question

When I use com android support appcompat-v7 28   in my project s build gradle module  it works without any error  But when I just use com android support appcompat-v7 28  just without     it gives me an error       Failed to resolve  com android support appcompat-v7 28 0   Just without the    end of it  I added maven before but the result was the same  Any idea to solve it

User · Answer

Ensure that your buildToolsVersion version tallies with your app compact version.

In order to find both installed compileSdkVersion and buildToolsVersion go to Tools > SDK Manager. This will pull up a window that will allow you to manage your compileSdkVersion and your buildToolsVersion.

To see the exact version breakdowns ensure you have the Show Package Details checkbox checked.

android {
    compileSdkVersion 28
    buildToolsVersion "28.0.3" (HERE)
    defaultConfig {
        applicationId "com.example.truecitizenquiz"
        minSdkVersion 14
        targetSdkVersion 28
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation 'com.android.support:appcompat-v7:28.0.0' (HERE)
    implementation 'com.android.support.constraint:constraint-layout:1.1.3'
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'com.android.support.test:runner:1.0.2'
    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
}

User · Answer

in build gradle   the version of bellow line should be same   implementation  com android support appcompat-v7 28 0 0-alpha1  implementation  com android support design 28 0 0

User · Answer

my problem was just network connection  using VPN solved the issue

User · Answer

some guys who still might have the problem like me  FOR IRANIAN and all the coutries who have sanctions    this is error can be fixed with proxy i used this free proxy for android studio 3 2 https   github com freedomofdevelopers fod just to to Settings  Ctrl   Alt   S  and search HTTP proxy then check Manual proxy configuration then add fodev org for host name and 8118 for Port number

User · Answer

As  Sourabh already pointed out  you can check in the Google Maven link what are the packages that Google has listed out   If you  like me  are prompted with a similar message to this Failed to resolve  com android support appcompat-v7 28 0  it could be that you got there after upgrading the targetSdkVersion or compileSdkVersion   What is basically happening is that the package is not being found  as the message correctly says  If you upgraded the SDK  check the Google Maven  to check what are the available versions of the package for the new SDK version that you want to upgrade to   I had these dependencies  on version 27    implementation  com android support appcompat-v7 27 1 1  implementation  com android support design 27 1 1  implementation  com android support recyclerview-v7 27 1 1  implementation  com android support cardview-v7 27 1 1  implementation  com android support support-v4 27 1 1    And I had to change the SDK version and the rest of the package number   implementation  com android support appcompat-v7 28 0 0  implementation  com android support design 28 0 0  implementation  com android support recyclerview-v7 28 0 0  implementation  com android support cardview-v7 28 0 0  implementation  com android support support-v4 28 0 0    Now the packages are found and downloaded  Since the only available package for the 28 version of the SDK is 28 0 0 at the moment of writing this

User · Answer

Add the following code on build gragle  project  for adding Google maven repository  allprojects       repositories                   maven               url  https   maven google com               name  Google

User · Answer

implementation  com android support appcompat-v7 28 0  implementation  com android support support-media-compat 28 0 0  implementation  com android support support-v4 28 0 0   All to add

User · Answer

28 0 0 is the final version of support libraries  Android has migrated to AndroidX  To use the latest android libraries  Migrating to AndroidX        Edit  Versions 28 0 0-rc02 and 28 0 0 are now available    I don t see any 28 0 version on Google Maven  Only 28 0 0-alpha1 and 28 0 0-alpha3  Just change it to either of those or how it was previously  i e   with    which just means any version under 28 major release   For an alpha appcompat release 28   makes more sense

User · Answer

Run  gradlew -q app dependencies   It will remove what is wrong

[android] Failed to resolve: com.android.support:appcompat-v7:28.0

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