title: Failed to resolve: com.android.support:appcompat-v7:28.+ , Error: more than one library with package name 'android.support.graphics.drawable'
body: <p>I'm new to Android Studio, I tried everything to solve this problem "Failed to resolve: com.android.support:appcompat-v7:28.+ " </p>
  
  <p>I tried to clean project , invalidate cash/restart and removing .idea and still the same</p>
  
  <p>I'm using android studio 2.2.1 for a learning reason , and I updated it to android studio 3 and there a multiple rendering problems so I returned back to version 2.2.1</p>
  
  <p>I tried to add </p>
  
  <p>maven {<br>
          url '<a href="https://maven.google.com/" rel="noreferrer">https://maven.google.com/</a>'
          name 'Google'
      }</p>
  
  <p>So,It stuck with another problem </p>
  
  <pre><code>"Error:Execution failed for task ':app:processDebugResources'.
  &gt; Error: more than one library with package name 'android.support.graphics.drawable'"
  </code></pre>
  
  <p><a href="https://i.stack.imgur.com/OtCjq.png" rel="noreferrer">Error Photo</a></p>
  
  <p>Finally I tried to change "appcompat-v7:28.+" to "appcompat-v7:27" and it' works but still tell me that i should use the same library to avoid mistakes</p>
  
  <p>This is my Gradle code:</p>
  
  <pre><code>apply plugin: 'com.android.application'
  
  android {
      compileSdkVersion 28
      buildToolsVersion "28.0.1"
      defaultConfig {
          applicationId "com.example.aimlive.myapplication"
          minSdkVersion 15
          targetSdkVersion 28
          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'
      })
      compile 'com.android.support:appcompat-v7:28.+'
      testCompile 'junit:junit:4.12'
  }
  </code></pre>