Question

我很茫然因为我觉得android应该照顾这个默认的选择行为......

我正在使用带有列表视图的actionbarsherlock，并在项目长按后出现上下文操作栏。我想让项目在长时间点击后突出显示，但他们只是做了初始闪烁的蓝色变暗然后它们恢复为默认颜色。我错过了什么吗？

    mHabitListView.setAdapter(mAdapter);
    mHabitListView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE);
    mHabitListView.setOnItemLongClickListener(new OnItemLongClickListener() {

        @Override
        public boolean onItemLongClick(AdapterView<?> parent, View view,
                int position, long id) {

                if (mHabitListView.isItemChecked(position)){
                    mHabitListView.setItemChecked(position, false);


                } else {
                    mHabitListView.setItemChecked(position, true);

                }

                if (mHabitListView.getCheckedItemCount() > 0) {

                    if (mMode == null) {
                        mMode = startActionMode(new ModeCallback());
                    } else {
                        mMode.setTitle(mHabitListView.getCheckedItemCount() + " " + getString(R.string.cab_selected_count));

                    }
                } else {
                    if (mMode != null) {
                        mMode.finish();

                    }
                }
                return true;
            }

    });






}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getSupportMenuInflater().inflate(R.menu.activity_main, menu);
    return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    // Handle item selection
    switch (item.getItemId()) {
        case R.id.menu_add_new_habit:
            Habit h = new Habit("Floss", "GOOD", "", "");

            mDbHelper.createHabitEntry(h);
            mDbHelper.close();

            Cursor cursor =  mDbHelper.getAllEntries();
            mAdapter.changeCursor(cursor);

            break;
    }
    return true;
}



 private final class ModeCallback implements ActionMode.Callback {

        @Override
        public boolean onCreateActionMode(ActionMode mode, Menu menu) {
            // Create the menu from the xml file
            MenuInflater inflater = getSupportMenuInflater();
            mode.setTitle(mHabitListView.getCheckedItemCount() + " " + getString(R.string.cab_selected_count));
            inflater.inflate(R.menu.list_contextual_menu, menu);
            return true;
        }

        @Override
        public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
            // Here, you can checked selected items to adapt available actions
            return false;
        }

        @Override
        public void onDestroyActionMode(ActionMode mode) {
            // Destroying action mode, let's unselect all items
            for (int i = 0; i < mHabitListView.getAdapter().getCount(); i++)
                mHabitListView.setItemChecked(i, false);

            if (mode == mMode) {
                mMode = null;
            }
        }

        @Override
        public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
            long[] selected = mHabitListView.getCheckedItemIds();
            if (selected.length > 0) {
                for (long id: selected) {
                    // Do something with the selected item
                }
            }
            mode.finish();
            return true;


        }


    }

Answer 1

将列表项的背景设为android:background="?android:attr/activatedBackgroundIndicator"

如果您仍然遇到任何问题，请尝试从listSelector xml中删除ListView属性

Answer 2

你可以使用 android.R.layout.simple_list_item_activated_2

mAdapter = new SimpleCursorAdapter(this, android.R.layout.simple_list_item_activated_2,
    null,
    new String[] { Favorite.BUS_NAME, Favorite.STATION_NAME },
    new int[] { android.R.id.text1, android.R.id.text2, }, 0);
setListAdapter(mAdapter);

enter image description here

ListView CAB选中项目着色

2 个答案: