带有Google Maps Direction Routing的java.lang.ExceptionInInitializerError

Question

我的应用程序使用谷歌地图方向路由应用程序，在Android Studio中编程，我得到一个例外。 我还从谷歌添加了所有需要的API密钥。

谢谢：）

03-30 21:46:37.216 20364-20364/com.directions.sample E/AndroidRuntime: FATAL EXCEPTION: main


    java.lang.ExceptionInInitializerError

at com.directions.sample.MainActivity.onCreate(MainActivity.java:81)                                                                               
at android.app.Activity.performCreate(Activity.java:5008)                                                                               
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1079)                                                                               
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2139)                                                                               
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2210)                                                                               
at android.app.ActivityThread.access$600(ActivityThread.java:142)                                                                               
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1208)                                                                               
at android.os.Handler.dispatchMessage(Handler.java:99)                                                                               
at android.os.Looper.loop(Looper.java:137)                                                                               
at android.app.ActivityThread.main(ActivityThread.java:4931)                                                                               
at java.lang.reflect.Method.invokeNative(Native Method)                                                                               
at java.lang.reflect.Method.invoke(Method.java:511)                                                                               
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:791)                                                                               
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:558)                                                                               
at dalvik.system.NativeStart.main(Native Method)

Caused by: java.lang.NoClassDefFoundError: com.google.android.gms.common.api.Api$ClientKey

at com.google.android.gms.location.places.Places.<clinit>(Unknown Source)                                                                               
at com.directions.sample.MainActivity.onCreate(MainActivity.java:81)                                                                                
at android.app.Activity.performCreate(Activity.java:5008)                                                                                
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1079)                                                                                
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2139)                                                                                
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2210)                                                                                
at android.app.ActivityThread.access$600(ActivityThread.java:142)                                                                                
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1208)                                                                                
at android.os.Handler.dispatchMessage(Handler.java:99)                                                                                
at android.os.Looper.loop(Looper.java:137)                                                                                
at android.app.ActivityThread.main(ActivityThread.java:4931)                                                                                
at java.lang.reflect.Method.invokeNative(Native Method)                                                                                
at java.lang.reflect.Method.invoke(Method.java:511)                                                                                
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:791)                                                                               
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:558)                                                                                
at dalvik.system.NativeStart.main(Native Method)