Android studio 使用

1、添加 framework jar 

http://blog.csdn.net/kkguo1990/article/details/53036302

2、于jdk  版本不对

http://ask.csdn.net/questions/251891

Error:Error converting bytecode to dex:
Cause: Dex cannot parse version 52 byte code.
This is caused by library dependencies that have been compiled using Java 8 or above.
If you are using the 'java' gradle plugin in a library submodule add 
targetCompatibility = '1.7'
sourceCompatibility = '1.7'
to that submodule's build.gradle file.

Error:1 error; aborting
:app:transformClassesWithDexForDebug FAILED

Error:Execution failed for task ':app:transformClassesWithDexForDebug'.

com.android.build.api.transform.TransformException: java.lang.RuntimeException: com.android.ide.common.process.ProcessException: java.util.concurrent.ExecutionException: com.android.ide.common.process.ProcessException: org.gradle.process.internal.ExecException: Process 'command 'C:\Program Files\Java\jdk1.8.0_66\bin\java.exe'' finished with non-zero exit value 1

出现这个现象的原因是你的jar包是基于jdk 1.8的，但当前AS（2.3.1）默认使用的jdk是1.7的。添加如下两句话，使你的项目适配JDK1.8。

3、 配置提高gradle 速度

http://www.jianshu.com/p/2a58fd896214