<uses-permission android:name="android.permission.INTERNET"></uses-permission>
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"></uses-permission>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"></uses-permission>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"></uses-permission>
compile ‘com.squareup.okio:okio:1.5.0‘
compile ‘com.squareup.okhttp3:okhttp:3.2.0‘
compile ‘com.squareup.okhttp3:logging-interceptor:3.4.1‘
compile ‘com.google.code.gson:gson:2.8.2‘
okhttp权限
原文地址：http://www.cnblogs.com/zzwerzi/p/7659219.html