[Android]VFY: unable to find class referenced in signature

03-04 11:21:10.332: W/dalvikvm(1508): VFY: unable to find class referenced in signature (Lcom/android/volley/toolbox/ImageLoader;)
03-04 11:21:10.332: I/dalvikvm(1508): Could not find method com.android.volley.toolbox.Volley.newRequestQueue, referenced from method com.evancharlton.folly.FollyApp.onCreate
03-04 11:21:10.342: W/dalvikvm(1508): VFY: unable to resolve static method 5059: Lcom/android/volley/toolbox/Volley;.newRequestQueue (Landroid/content/Context;)Lcom/android/volley/RequestQueue;
03-04 11:21:10.342: D/dalvikvm(1508): VFY: replacing opcode 0x71 at 0x0005

處理方式:
java Build Path -->Order and Export ,把第三方jar句選起來