一.通过activity启动Context Action Bar

1.主java

public class ActivityActionModeFrgmt extends Fragment implements

        OnCheckedChangeListener, ActionMode.Callback {

    private ActionMode mActionMode;

    private CheckBox mCheckBox;

    @Override

    public View onCreateView(LayoutInflater inflater, ViewGroup container,

            Bundle savedInstanceState) {

        View v = inflater.inflate(R.layout.frgmt_cab_for_activity, container,

                false);

        mCheckBox = (CheckBox) v.findViewById(R.id.vid_check_box);

        mCheckBox.setOnCheckedChangeListener(this);

        return v;

    }

    @Override

    public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {

        if (isChecked) {

            mActionMode = getActivity().startActionMode(this);// activity启动一个继承ActionMode,需要ActionMode.Callback

        }else

        {

            mActionMode.finish();

        }

    }

    // for ActionMode.Callback

    @Override

    public boolean onCreateActionMode(ActionMode mode, Menu menu) {

        MenuInflater inflater = getActivity().getMenuInflater();

        inflater.inflate(R.menu.menu_context_for_activity, menu);// 创建context action

                                                                // bar的菜单

        return true;

    }

    @Override

    public boolean onPrepareActionMode(ActionMode mode, Menu menu) {

        mode.setTitle("Checked");

        return true;

    }

    @Override

    public boolean onActionItemClicked(ActionMode mode, MenuItem item) {

        switch (item.getItemId()) {

        case R.id.action_delete:

            Toast.makeText(getActivity(), "delete", Toast.LENGTH_SHORT).show();

            break;

        case R.id.action_send:

            Toast.makeText(getActivity(), "send", Toast.LENGTH_SHORT).show();

            break;

        case R.id.action_share:

            Toast.makeText(getActivity(), "share", Toast.LENGTH_SHORT).show();

            break;

        case R.id.action_settings:

            Toast.makeText(getActivity(), "settings", Toast.LENGTH_SHORT)

                    .show();

            break;

        default:

            break;

        }

        mode.finish();

        return true;

    }

    @Override

    public void onDestroyActionMode(ActionMode mode) {

        mCheckBox.setChecked(false);

    }

}

2.菜单文件 menu_context_for_activity.xml

<?xml version="1.0" encoding="utf-8"?>

<menu xmlns:android="http://schemas.android.com/apk/res/android" >

    <item

        android:id="@+id/action_delete"

        android:icon="@android:drawable/ic_menu_delete"

        android:showAsAction="ifRoom|withText"

        android:title="@string/delete"

        android:titleCondensed="delete">

    </item>

    <item

        android:id="@+id/action_share"

        android:showAsAction="ifRoom|withText"

        android:title="@string/share"/>

    <item

        android:id="@+id/action_send"

        android:showAsAction="ifRoom|withText"

        android:title="@string/send"/>

    <item

        android:id="@+id/action_settings"

        android:orderInCategory="100"

        android:showAsAction="never"

        android:title="@string/action_settings"/>

</menu>

3.布局文件 frgmt_cab_for_activity.xml

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:orientation="vertical" >

    <TextView

        android:id="@+id/tv"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="@string/aty_action_mode" />

    <CheckBox

        android:id="@+id/vid_check_box"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="@string/view_s_check_mode" />

</LinearLayout>

二. ListView 用Context Action Bar 多选删除示例

1.MultiCabFrgmt.java

public class MultiCabFrgmt extends Fragment implements MultiChoiceModeListener {

    private ListView mListView;

    private SelectionArrayAdapter adapter;

    private List<ItemData> data;

    private ShareActionProvider mShareActionProvider;

    public boolean isItemSelected(int position) {

        return false;

    }

    private void init() {

        data = new ArrayList<ItemData>();

        ItemData ida;

        for (int i = 0; i < 32; ++i) {

            ida = new ItemData();

            ida.txt = "item" + i;

            data.add(ida);

        }

        adapter = new SelectionArrayAdapter(getActivity(),

                android.R.layout.simple_list_item_1, data);

        mListView.setAdapter(adapter);

        mListView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE_MODAL);//CHOICE_MODE_SINGLE

        mListView.setMultiChoiceModeListener(this);

    }

    @Override

    public View onCreateView(LayoutInflater inflater, ViewGroup container,

            Bundle savedInstanceState) {

        View v = inflater.inflate(R.layout.frgmt_cab_for_listview, container, false);

        mListView = (ListView) v.findViewById(R.id.id_listview);

        init();

        return v;

    }

    @Override

    public boolean onCreateActionMode(ActionMode mode, Menu menu) {

        MenuInflater inflater = getActivity().getMenuInflater();

        inflater.inflate(R.menu.menu_context_for_listview, menu);

        MenuItem mi = menu.findItem(R.id.action_share);

        mShareActionProvider = (ShareActionProvider) mi.getActionProvider();

        mShareActionProvider.setShareIntent(new Intent(Intent.ACTION_SEND)

                .setType("image/*"));

        return true;

    }

    @Override

    public boolean onPrepareActionMode(ActionMode mode, Menu menu) {

        return true;

    }

    @Override

    public boolean onActionItemClicked(ActionMode mode, MenuItem item) {

        switch (item.getItemId()) {

        case R.id.action_delete: {

            for (int i = data.size() - 1; i >= 0; --i) {

                if (data.get(i).selected) {

                    data.remove(i);

                }

            }

        }

            break;

        case R.id.action_share:

            break;

        case R.id.action_settings:

        }

        mode.finish();

        return true;

    }

    @Override

    public void onDestroyActionMode(ActionMode mode) {

        for (int i = 0; i < data.size(); i++) {

            data.get(i).selected = false;

        }

    }

    @Override

    public void onItemCheckedStateChanged(ActionMode mode, int position,

            long id, boolean checked) {

        ItemData ida = data.get(position);

        ida.selected = !ida.selected;

        adapter.notifyDataSetChanged();

        mode.setTitle(mListView.getCheckedItemCount() + " selected");

    }

}

2.SelectionArrayAdapter.java

public class SelectionArrayAdapter extends ArrayAdapter<ItemData> {

    private List<ItemData> data;

    private LayoutInflater inflater;

    private int resource;

    private void init(Context context,int resource,List<ItemData> data){

        this.data = (ArrayList<ItemData>) data;

        inflater = LayoutInflater.from(context);

        this.resource = resource;

    }

    public SelectionArrayAdapter(Context context, int resource,

            int textViewResourceId, List<ItemData> data) {

        super(context, resource, textViewResourceId, data);

        init(context,resource,data);

    }

    public SelectionArrayAdapter(Context context, int resource,

            List<ItemData> data) {

        super(context, resource, data);

        init(context,resource,data);

    }

    @Override

    public View getView(int position, View convertView, ViewGroup parent) {

        if (null == convertView) {

            convertView = inflater.inflate(this.resource, null);

        }

        TextView tv = (TextView) convertView.findViewById(android.R.id.text1);

        ItemData item = getItem(position);

        tv.setText(item.txt);

        if (item.selected) {

            convertView.setBackgroundColor(0x7f0f0f0f);// this is a selected

        }else{

            convertView.setBackgroundColor(0x7ff0f0f0); // default color

        }

        return convertView;

    }

    @Override

    public ItemData getItem(int position) {

        return data.get(position);

    }

    @Override

    public long getItemId(int position) {

        return position;

    }

    @Override

    public void clear() {

        super.clear();

    }

    @Override

    public int getCount() {

        int sz = data.size();

        return sz;

    }

}

3.Context Action Bar的操作项菜单文件 menu_context_for_listview.xml

<?xml version="1.0" encoding="utf-8"?>

<menu xmlns:android="http://schemas.android.com/apk/res/android" >

    <item

        android:id="@+id/action_share"

        android:orderInCategory="100"

        android:actionProviderClass="android.widget.ShareActionProvider"

        android:showAsAction="always"

        android:title="@string/share"/>

     <item

        android:id="@+id/action_delete"

        android:showAsAction="ifRoom|withText"

        android:title="@string/delete"/>

    <item

        android:id="@+id/action_settings"

        android:orderInCategory="100"

        android:showAsAction="never"

        android:title="@string/action_settings"/>

</menu>

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