Android SDK开发 -- TitleBar重构 -

代理模式 

之前的使用如下。Activity和Fragment同时implement AppTitle

public abstract class BaseActivity extends Activity implements Handler.Callback, AppTitle {  

public class BaseFragment extends Fragment implements AppTitle

修改后的

public class BaseFragment extends Fragment {  
  
    private AppTitle appTitle;  
  
        @Override  
        public void onViewCreated(View view, Bundle savedInstanceState) {  
          super.onViewCreated(view, savedInstanceState);  
          Log.d("fragment:onCreateView", getView());  
          //  
          appTitle = new TitleMgr(getActivity(), getView());  
          appTitle.initTitle();  
        }  
        
        public AppTitle getAppTitle() {  
       return appTitle;  
    }  
  
    public void setAppTitle(AppTitle appTitle) {  
       this.appTitle = appTitle;  
    }

采用策略模式

如果某个BaseFragment的样式不太一样，可以重新AppTitle模块。同时又不影响整体app的使用。

默认的实现类是TitleMgr