在OkHttp的使用过程中出现下列问题Picasso detected an unsupported OkHttp on the classpath.

http://blog.csdn.net/github_36875356/article/details/54178751

在使用OKHttp的时候，加入Picasso，会出现错误：

Java.lang.RuntimeException: Picasso detected an unsupported OkHttp on the classpath.
To use OkHttp with this version of Picasso, you'll need:
1. com.squareup.okhttp:okhttp:1.6.0 (or newer)
2. com.squareup.okhttp:okhttp-urlconnection:1.6.0 (or newer)

解决方法：

在写依赖库的时候要写三个：
compile 'com.squareup.okhttp:okhttp:2.4.0'
    compile 'com.squareup.okhttp:okhttp-urlconnection:2.2.0'
    compile 'com.squareup.picasso:picasso:2.4.0'