the problem is that i cannot download the apk to the device,
the console says:
Exception in thread “Thread-51” java.lang.NoSuchMethodError: com.android.ddmlib.IDevice.installRemotePackage(Ljava/lang/String;Z[Ljava/lang/String;)Ljava/lang/String;
at com.android.ide.eclipse.adt.internal.launch.AndroidLaunchController.doInstall(AndroidLaunchController.java:1181)
at com.android.ide.eclipse.adt.internal.launch.AndroidLaunchController.installPackage(AndroidLaunchController.java:1047)
at com.android.ide.eclipse.adt.internal.launch.AndroidLaunchController.doSyncApp(AndroidLaunchController.java:930)
at com.android.ide.eclipse.adt.internal.launch.AndroidLaunchController.syncApp(AndroidLaunchController.java:896)
at com.android.ide.eclipse.adt.internal.launch.AndroidLaunchController.simpleLaunch(AndroidLaunchController.java:868)
at com.android.ide.eclipse.adt.internal.launch.AndroidLaunchController.access$4(AndroidLaunchController.java:859)
at com.android.ide.eclipse.adt.internal.launch.AndroidLaunchController$3.run(AndroidLaunchController.java:707)
Update: Reinstall Android SDK did not fix my problem.
Uninstall and reinstall Eclipse Android plugin fixed my problem.