android - 如何从 IntentService 启动 Activity 并传递类来自另一个班级？

Question

我想通过 IntentService 启动一个活动，但要注意的是活动名称或类名将作为参数传递给 IntentService。

以下是我的代码块...

public class Runner {
        Context context;
        public void startActivity() {

        Intent intent = new Intent(context, ActivityLauncher.class);
        intent.putExtra("caller", "Runner");

        //CameraActivity is my activity which i want to start
        // I will be giving other activities also in other parts of my code

        intent.putExtra("class",CameraActivity.class);          

        context.startService(intent);
    }

}

现在ActivityLauncher Service的代码如下......

public class ActivityLauncher extends IntentService {

public ActivityLauncher(String name) {
    super("ActivityLauncher");

}

 protected void onHandleIntent(Intent intent) {
    try{
        Bundle b = intent.getExtras();          
        Class<?> c = (Class<?>) b.get("class");

        Intent mainActivityIntent = new Intent(getBaseContext(), c.getClass());  
        mainActivityIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

        String intentType = intent.getExtras().getString("caller");
        if(intentType == null) 
            return;
        if(intentType.equals("Runner"))
            getApplication().startActivity(mainActivityIntent); 

    } catch (Exception localException) {
        Log.d("TAG", localException.getMessage());
    }
  }

 }

请告诉我如何改进我的代码。我怎样才能得到解决方案。