title: Android Studio - getChildFragmentManager / android-support-v4
body: <p>I cannot solve the problem with android-support-v4.</p>
  
  <p>All "Extras" including "Android Support Repository (11)" and "Android Support Library (21.0.3)" - Installed.</p>
  
  <p>I was trying a lot of ideas which I found, but nothing help. I am AndroidStudio beginner. Here is my builg.gradle:</p>
  
  <pre><code>apply plugin: 'com.android.application'
  
  android {
      compileSdkVersion 21
      buildToolsVersion "21.1.2"
  
      defaultConfig {
          applicationId "com.example.myapp"
          minSdkVersion 17
          targetSdkVersion 21
          versionCode 1
          versionName "1.0"
      }
      buildTypes {
          release {
              minifyEnabled false
              proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
          }
      }
  }
  
  dependencies {
      compile fileTree(include: ['*.jar'], dir: 'libs')
      compile 'com.android.support:support-v4:21.0.3'
      compile 'com.google.android:support-v4:r7'
  }
  </code></pre>
  
  <p>I want to use TabHost in one of Fragments (I did the Navigation Drawer). That is why I need "getChildFragmentManager()".
  If there is another way to do that, I can skip fighting with "support-v4".</p>
  
  <p>But I do not understand I do wrongly... There is a lot of people having this problem, but I can not solve it :(</p>