如何通过数据之间的活动在Android中使用束片段 [英] how to pass the data in between activity to fragment using bundle in android

问题描述

我可以用一个变量的值存储。现在我想该变量传递到一个片段
用下面的code，我能够加载片段：

I can store the value in one variable. Now I want pass that variable into a fragment Using the code below, I am able to load fragments:

public class AndroidListFragmentActivity extends Activity {
    Fragment2 f2;
    public static String itemname;
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.apetiserfragement);
        itemname=getIntent().getStringExtra("itemname");
        Bundle args=new Bundle();
        args.putString("itemname", itemname);
        f2=new Fragment2();
        f2.setArguments(args);
    }
} /* (Here I load fragment using xml page) itemname */

的输出被分裂成2个窗口一个用于延长listfragment（对于列表视图）和一个用于片段。

The output is splitted into 2 windows one for extend for listfragment (for listview) and one for fragments.

Fragment2.xml

Fragment2.xml

public class Fragment2 extends Fragment {
    String itemname;

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
    Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        System.out.println(getArguments().getString("itemname"));

        return inflater.inflate(R.layout.fragment2, container, false);
    }

    @Override
    public void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
    }
}

AndroidListFragmentActivity在这个类ITEMNAME我想通过Fragment2.class ..请帮助我

AndroidListFragmentActivity in this class itemname I want pass Fragment2.class.. please help me

推荐答案

如果这两个片段是在其他活动则可以使用意图

If both fragment are on other activity then can use intent

如果在相同的活动然后可以对特定的活动做了手术。

if on same activity then can do operation on that particular activity

在本链接

看到类TitlesFragment的onListItemClick

see onListItemClick of class TitlesFragment

**
     * Helper function to show the details of a selected item, either by
     * displaying a fragment in-place in the current UI, or starting a
     * whole new activity in which it is displayed.
     */
    void showDetails(int index) {
        mCurCheckPosition = index;

        if (mDualPane) {//<---------------------f on same activity then can do operation on that particular fragment
            // We can display everything in-place with fragments, so update
            // the list to highlight the selected item and show the data.
            getListView().setItemChecked(index, true);

            // Check what fragment is currently shown, replace if needed.
            DetailsFragment details = (DetailsFragment) //<------------------------see use getFragmentManager
                    getFragmentManager().findFragmentById(R.id.details);
            if (details == null || details.getShownIndex() != index) {
                // Make new fragment to show this selection.
                details = DetailsFragment.newInstance(index);

                // Execute a transaction, replacing any existing fragment
                // with this one inside the frame.
                FragmentTransaction ft = getFragmentManager().beginTransaction();
                ft.replace(R.id.details, details);
                ft.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_FADE);
                ft.commit();
            }

        } else { //<----------If both fragment are on other activity then can use intent 
            // Otherwise we need to launch a new activity to display
            // the dialog fragment with selected text.
            Intent intent = new Intent();
            intent.setClass(getActivity(), DetailsActivity.class);
            intent.putExtra("index", index);
            startActivity(intent);
        }

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