1.编写全局Application,便于管理系统启动退出时的Activity,Service等管理

public class ChatApplication extends Application {    private List
     
       activitys = new LinkedList
      
       ();        private List
       
         services = new LinkedList
        
         ();        @Override    public void onCreate() {        super.onCreate();    }        public void addActivity(Activity activity) {        activitys.add(activity);    }    public void removeActivity(Activity activity) {        activitys.remove(activity);    }    public void addService(Service service) {        services.add(service);    }    public void removeService(Service service) {        services.remove(service);    }        public void closeApplication() {        closeActivitys();        closeServices();    }    private void closeActivitys() {        ListIterator
         
           iterator = activitys.listIterator();        while (iterator.hasNext()) {            Activity activity = iterator.next();            if (activity != null) {                activity.finish();            }        }    }    private void closeServices() {        ListIterator
          
            iterator = services.listIterator(); while (iterator.hasNext()) { Service service = iterator.next(); if (service != null) { stopService(new Intent(this, service.getClass())); } } }}
          
         
        
       
      
     

2. 编写AndroidManifest.xml

3. 编写BaseActivity和BaseService

public abstract class BaseActivity extends FragmentActivity {    @Override    protected void onCreate(Bundle bundle) {        super.onCreate(bundle);        ((ChatApplication) getApplication()).addActivity(this);    }    @Override    protected void onDestroy() {        super.onDestroy();        ((ChatApplication) getApplication()).removeActivity(this);    }}

public abstract class BaseService extends Service {    @Override    public void onCreate() {        super.onCreate();                ((ChatApplication)getApplication()).addService(this);    }    @Override    public void onDestroy() {        super.onDestroy();                ((ChatApplication)getApplication()).removeService(this);    }}

4. 编写普通Activity和Service分别继承自BaseActivity和BaseService

public class LogoActivity extends BaseActivity

 

这只是一个架子,以后可以在Application中放一些全局的信息,可以方便管理和调用