title: Android Studio - Unable to find optional library: org.apache.http.legacy
body: <p>I am making an android app which features navigation drawer. I remember that I used some features that requires sdk version to be 24 so compileSdkVersion needs to be 24 as well as the targetSdkVersion, but my android phone is only 19 so I don't see the app downloaded on my phone, it is opened once I finished running the project but when I close the tab on my phone, I cannot open it again. So I tried to change the compileSdkVersion and targetSdkVersion to 19 but I'm having this error: Unable to find optional library: org.apache.http.legacy</p>
  
  <p>build.gradle:</p>
  
  <pre><code>apply plugin: 'com.android.application'
  
  android {
  compileSdkVersion 19
  buildToolsVersion "25.0.0"
  defaultConfig {
      applicationId "com.marivel.cruz.threatmapping"
      minSdkVersion 17
      targetSdkVersion 19
      versionCode 1
      versionName "1.0"
      testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
  
      multiDexEnabled true
  }
  buildTypes {
      release {
          minifyEnabled false
          proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
      }
  }
  signingConfigs {}
  buildTypes {}
  
  useLibrary 'org.apache.http.legacy'
  }
  
  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-v7:19.+'
  compile 'com.android.support:support-v4:19.1.0'
  compile 'com.google.android.gms:play-services-maps:9.8.0'
  compile 'com.android.support:multidex:1.0.0'
  compile 'com.google.android.gms:play-services:9.8.0'
  testCompile 'junit:junit:4.12'
  }
  </code></pre>