public String getBookByScan( String s ) {
// Toast.makeText(activity, s, Toast.LENGTH_SHORT).show(); -------》如果这句，可以执行到但下面这两句却不行
Intent intent = new Intent(activity, CaptureActivity.class);
startActivityForResult(intent, 1);
｝
12-28 19:06:08.815: E/CloudManager(4227): java.util.concurrent.ExecutionException: miui.net.exception.CloudServiceFailureException
12-28 19:06:08.815: E/CloudManager(4227): at java.util.concurrent.FutureTask.report(FutureTask.java:94)
12-28 19:06:08.815: E/CloudManager(4227): at java.util.concurrent.FutureTask.get(FutureTask.java:160)
12-28 19:06:08.815: E/CloudManager(4227): at miui.net.CloudManager$CmTask.internalGetResult(CloudManager.java:586)
12-28 19:06:08.815: E/CloudManager(4227): at miui.net.CloudManager$CmTask.getResult(CloudManager.java:649)
12-28 19:06:08.815: E/CloudManager(4227): at miui.net.CloudManager$CmTask.getResult(CloudManager.java:525)
12-28 19:06:08.815: E/CloudManager(4227): at miui.net.MiCloudSyncAdapterBase.getPhoneInfo(MiCloudSyncAdapterBase.java:293)
12-28 19:06:08.815: E/CloudManager(4227): at com.miui.cloudservice.mms.h.onPerformMiCloudSync(MmsSmsSyncAdapter.java:28)
12-28 19:06:08.815: E/CloudManager(4227): at miui.net.MiCloudSyncAdapterBase.onPerformSync(MiCloudSyncAdapterBase.java:142)
12-28 19:06:08.815: E/CloudManager(4227): at android.content.AbstractThreadedSyncAdapter$SyncThread.run(AbstractThreadedSyncAdapter.java:254)
12-28 19:06:08.815: E/CloudManager(4227): Caused by: miui.net.exception.CloudServiceFailureException
12-28 19:06:08.815: E/CloudManager(4227): at miui.net.CloudManager$CmTask.convertErrorCodeToException(CloudManager.java:699)
12-28 19:06:08.815: E/CloudManager(4227): at miui.net.CloudManager$CmTask.access$100(CloudManager.java:525)
12-28 19:06:08.815: E/CloudManager(4227): at miui.net.CloudManager$CmTask$ICloudManagerResponseImpl.onError(CloudManager.java:687)
12-28 19:06:08.815: E/CloudManager(4227): at miui.net.ICloudManagerResponse$Stub.onTransact(ICloudManagerResponse.java:68)
12-28 19:06:08.815: E/CloudManager(4227): at android.os.Binder.execTransact(Binder.java:351)
------解决思路----------------------
把CloudService.apk翻一遍后看看报错行是什么样的代码，缺什么条件