Xamarin android4.0.2 安卓门外汉，只想配置好一个能运行的版本，然后学习写点代码

[AndroidRuntime] Shutting down VM
 [AndroidRuntime] FATAL EXCEPTION: main
 [AndroidRuntime] java.lang.ExceptionInInitializerError
 [AndroidRuntime] at java.lang.Class.newInstanceImpl(Native Method)
 [AndroidRuntime] at java.lang.Class.newInstance(Class.java:1319)
 [AndroidRuntime] at android.app.Instrumentation.newActivity(Instrumentation.java:1023)
 [AndroidRuntime] at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1870)
 [AndroidRuntime] at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1980)
 [AndroidRuntime] at android.app.ActivityThread.access$600(ActivityThread.java:122)
 [AndroidRuntime] at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1146)
 [AndroidRuntime] at android.os.Handler.dispatchMessage(Handler.java:99)
 [AndroidRuntime] at android.os.Looper.loop(Looper.java:137)
 [AndroidRuntime] at android.app.ActivityThread.main(ActivityThread.java:4340)
 [AndroidRuntime] at java.lang.reflect.Method.invokeNative(Native Method)
 [AndroidRuntime] at java.lang.reflect.Method.invoke(Method.java:511)
 [AndroidRuntime] at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
 [AndroidRuntime] at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
 [AndroidRuntime] at dalvik.system.NativeStart.main(Native Method)
 [AndroidRuntime] Caused by: java.lang.UnsatisfiedLinkError: register
 [AndroidRuntime] at mono.android.Runtime.register(Native Method)
 [AndroidRuntime] at test7.MainActivity.(MainActivity.java:14)
 [AndroidRuntime] ... 15 more
 [Process] Sending signal. PID: 860 SIG: 9