android 常见异常解决_failed resolution of:

android studio配置：

异常：Failed resolution of:Lokhttp3/OkHttpClient;

解决方法：添加依赖项：

compile files('libs/okhttp-3.3.1.jar')
compile 'com.squareup.okhttp:okhttp:2.0.0'

 

异常：Failed resolution of:Lokio/ForwardingTimeout;

解决方法：添加依赖项：

compile files('libs/okio-1.6.0.jar')

异常：Duplicate files copied in APKMETA-INF/maven/com.squareup.okio/okio/pom.properties

还需要build.gradle添加：

packagingOptions {
    exclude 'META-INF/NOTICE.txt'
    exclude'META-INF/LICENSE.txt'
    exclude 'META-INF/DEPENDENCIES.txt'
    exclude 'META-INF/NOTICE'
    exclude 'META-INF/LICENSE'
    exclude 'META-INF/DEPENDENCIES'
    exclude 'META-INF/dependencies.txt'
    exclude 'META-INF/maven/com.squareup.okhttp/okhttp/pom.xml'
    exclude 'META-INF/maven/com.squareup.okhttp/okhttp/pom.properties'
    exclude 'META-INF/maven/com.squareup.okio/okio/pom.xml'
    exclude 'META-INF/maven/com.squareup.okio/okio/pom.properties'
}

 

官网：

https://github.com/square/okhttp

 

github例子：

https://github.com/hongyangAndroid/okhttp-utils

 

简单封装：

https://github.com/neil2hw/OkHttpManager/blob/master/OkHttpManager.java

 

使用例子：

 OkHttpClient client = new OkHttpClient();

URL url = null;
try {
   url = new URL("http://blog.csdn.net/gaolu");
   Request request = new Request.Builder().url(url).build();

   Response response =client.newCall(request).execute();
   String aaa = response.body().string();
   Log.e("aaa", aaa);
} catch (MalformedURLException e1) {
   e1.printStackTrace();
} catch (IOException e1) {
   e1.printStackTrace();
}

使用例子：

String url="http://www.csdn.net/";

OkHttpUtils

    .get()

    .url(url)

    .addParams("username","hyman")

    .addParams("password","123")

    .build()

    .execute(newStringCallback()

            {

                @Overridepublicvoid onError(Request request, Exception e)

                {

 

                }

 

                @Overridepublicvoid onResponse(String response)

                {

 

                }

            });