用OSS的DEMO　API　做移动开发　报错

用OSS的DEMO　API　做移动开发　
在下面的代码中
OSSClient client = new OSSClient(OSS_ENDPOINT, ACCESS_ID, ACCESS_KEY, config);
总会报java.lang.NoSuchMethodError: org.apache.http.impl.conn.tsccm.ThreadSafeClientConnManager.<init>
我是用android平台来做的。。。
但是如果是用JAVA平台来做却是可以正常的上传和下载　。。


可以请问是什么原因吗，下面是全部的异常

06-16 17:14:45.608: E/AndroidRuntime(18247): FATAL EXCEPTION: main
06-16 17:14:45.608: E/AndroidRuntime(18247): java.lang.NoSuchMethodError: org.apache.http.impl.conn.tsccm.ThreadSafeClientConnManager.<init>
06-16 17:14:45.608: E/AndroidRuntime(18247):     at com.aliyun.common.comm.HttpFactory.createThreadSafeClientConnManager(HttpFactory.java:104)
06-16 17:14:45.608: E/AndroidRuntime(18247):     at com.aliyun.common.comm.HttpFactory.createHttpClient(HttpFactory.java:65)
06-16 17:14:45.608: E/AndroidRuntime(18247):     at com.aliyun.common.comm.DefaultServiceClient.<init>(DefaultServiceClient.java:35)
06-16 17:14:45.608: E/AndroidRuntime(18247):     at com.aliyun.openservices.oss.OSSClient.<init>(OSSClient.java:134)
06-16 17:14:45.608: E/AndroidRuntime(18247):     at com.example.oss.MainActivity2.onCreate(MainActivity2.java:52)
06-16 17:14:45.608: E/AndroidRuntime(18247):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
06-16 17:14:45.608: E/AndroidRuntime(18247):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1722)
06-16 17:14:45.608: E/AndroidRuntime(18247):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1784)
06-16 17:14:45.608: E/AndroidRuntime(18247):     at android.app.ActivityThread.access$1500(ActivityThread.java:123)
06-16 17:14:45.608: E/AndroidRuntime(18247):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:939)
06-16 17:14:45.608: E/AndroidRuntime(18247):     at android.os.Handler.dispatchMessage(Handler.java:99)
06-16 17:14:45.608: E/AndroidRuntime(18247):     at android.os.Looper.loop(Looper.java:130)
06-16 17:14:45.608: E/AndroidRuntime(18247):     at android.app.ActivityThread.main(ActivityThread.java:3835)
06-16 17:14:45.608: E/AndroidRuntime(18247):     at java.lang.reflect.Method.invokeNative(Native Method)
06-16 17:14:45.608: E/AndroidRuntime(18247):     at java.lang.reflect.Method.invoke(Method.java:507)
06-16 17:14:45.608: E/AndroidRuntime(18247):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:864)
06-16 17:14:45.608: E/AndroidRuntime(18247):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:622)
06-16 17:14:45.608: E/AndroidRuntime(18247):     at dalvik.system.NativeStart.main(Native Method)