移动推送绑定账号失败

移动推送能够收到广播，但是要实现个推，绑定账号总是失败是什么原因呢？
[CloudPushSDK bindAccount:@"1234567890" withCallback:^(BOOL success) {

        if (success) {
            UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"ok" message:nil delegate:self cancelButtonTitle:nil otherButtonTitles:@"appdelegate", nil];
            [alertView show];
        }else{
            UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"no" message:nil delegate:self cancelButtonTitle:nil otherButtonTitles:@"appdelegate", nil];
            [alertView show];
        }
    }];