我有一个navigationDrawer，其listView有三个项目（item1，item2和item3）。 item1，在其布局中有两个按钮（启用和禁用）。我想要做的是，当用户点击item1然后点击布局中的启用按钮时，navigationdrawer的列表视图中的其他两个项目应该出现。如果用户单击禁用按钮，（item2和item3）如果出现则应该消失。
目前，我被卡在button listener中的item1 layout，我不知道在item1布局的button listener内写什么。亲切的租赁有一个乐趣。
下面是我的尝试，请为此我需要帮助和指导。
mainActivity ：
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
initViews(R.layout.activity_main);
if (savedInstanceState == null) {
// on first time display view for first nav item
displaySelectionLayout(0);
}
}
private void displaySelectionLayout(int position) {
// TODO Auto-generated method stub
Fragment fragment = null;
switch (position) {
case 0:
fragment = new Item1_Fragment();
break;
case 1:
fragment = new Item2_Fragment();
break;
case 2: fragment = new Item3_Fragment();
default:
break;
}
if (fragment != null) {
FragmentManager fragmentManager = getFragmentManager();
fragmentManager.beginTransaction().replace(R.id.frame_container, fragment).commit();
navDrawerListView.setItemChecked(position, true); // update selected item and title, then close the drawer
navDrawerListView.setSelection(position);
setTitle(navDrawerOptions[position]);
navDrawerLayout.closeDrawer(navDrawerListView);
} else {
Log.e(TAG, "Error in creating fragment"); // error in creating fragment
}
}
private void initViews(int activityMain) {
// TODO Auto-generated method stub
setContentView(R.layout.activity_main);
navDrawerLayout = (DrawerLayout) findViewById(R.id.navDrawerLayout);
navDrawerListView = (ListView) findViewById(R.id.navDrawerListView);
navDrawerOptions = getResources().getStringArray(R.array.nav_drawer_items);
navDrawerArrayList = new ArrayList<NavDrawerItemStructure>();
navDrawerArrayList.add(new NavDrawerItemStructure(navDrawerOptions[0], VISIBE));
navDrawerArrayList.add(new NavDrawerItemStructure(navDrawerOptions[1], VISIBE));
navDrawerArrayList.add(new NavDrawerItemStructure(navDrawerOptions[2], VISIBE));
adapter = new NavDrawerListAdapter(getApplicationContext(),navDrawerArrayList);
navDrawerListView.setAdapter(adapter);
navDrawerListView.setOnItemClickListener(new SlideMenuClickListener());
setUpNavDrawer();
}
private void setUpNavDrawer() {
// TODO Auto-generated method stub
getActionBar().setDisplayHomeAsUpEnabled(true);
getActionBar().setHomeButtonEnabled(true);
mTitle = mDrawerTitle = getTitle();
navDrawerToggle = new ActionBarDrawerToggle(this, navDrawerLayout,
R.drawable.ic_launcher, //nav menu toggle icon
R.string.app_name, // nav drawer open - description for accessibility
R.string.app_name // nav drawer close - description for accessibility
){
public void onDrawerClosed(View view) {
getActionBar().setTitle(mTitle);
invalidateOptionsMenu(); // calling onPrepareOptionsMenu() to show action bar icons
}
public void onDrawerOpened(View drawerView) {
getActionBar().setTitle(mDrawerTitle);
invalidateOptionsMenu(); // calling onPrepareOptionsMenu() to hide action bar icons
}
};
navDrawerLayout.setDrawerListener(navDrawerToggle);
}
/**
* Slide menu item click listener
* */
class SlideMenuClickListener implements
ListView.OnItemClickListener {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
// display view for selected nav drawer item
displaySelectionLayout(position);
}
}
/***
* Called when invalidateOptionsMenu() is triggered
*/
@Override
public boolean onPrepareOptionsMenu(Menu menu) {
// if nav drawer is opened, hide the action items
boolean drawerOpen = navDrawerLayout.isDrawerOpen(navDrawerListView);
menu.findItem(R.id.action_settings).setVisible(!drawerOpen);
return super.onPrepareOptionsMenu(menu);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// toggle nav drawer on selecting action bar app icon/title
if (navDrawerToggle.onOptionsItemSelected(item)) {
return true;
}
// Handle action bar actions click
switch (item.getItemId()) {
case R.id.action_settings:
return true;
default:
return super.onOptionsItemSelected(item);
}
}
@Override
public void setTitle(CharSequence title) {
mTitle = title;
getActionBar().setTitle(mTitle);
}
/**
* When using the ActionBarDrawerToggle, you must call it during
* onPostCreate() and onConfigurationChanged()...
*/
@Override
protected void onPostCreate(Bundle savedInstanceState) {
super.onPostCreate(savedInstanceState);
// Sync the toggle state after onRestoreInstanceState has occurred.
navDrawerToggle.syncState();
}
@Override
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
// Pass any configuration change to the drawer toggls
navDrawerToggle.onConfigurationChanged(newConfig);
}
}
item1_Fragement
public class Item1_Fragment extends Fragment{
private Button btn_enable;
private Button btn_disable;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
// TODO Auto-generated method stub
View rootView = inflater.inflate(R.layout.item1_layout, container, false);
btn_enable = (Button) rootView.findViewById(R.id.btn_enable);
btn_disable = (Button) rootView.findViewById(R.id.btn_disable);
return rootView;
}
@Override
public void onViewCreated(View view, Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onViewCreated(view, savedInstanceState);
btn_enable.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
// how can i dispatch the action from item1 listener to the mainactivit??
}
});
}
}
NavDrawer适配器类：
public class NavDrawerListAdapter extends BaseAdapter {
private Context context;
private ArrayList<NavDrawerItemStructure> itemsList;
public NavDrawerListAdapter(Context context, ArrayList<NavDrawerItemStructure> itemsList) {
// TODO Auto-generated method stub
this.context = context;
this.itemsList = itemsList;
}
@Override
public int getCount() {
// TODO Auto-generated method stub
return this.itemsList.size();
}
@Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return this.itemsList.get(position);
}
@Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
if (convertView == null) {
LayoutInflater layoutinflater = (LayoutInflater) context.getSystemService(Activity.LAYOUT_INFLATER_SERVICE);
convertView = layoutinflater.inflate(R.layout.list_view_item_design, null);
}
TextView tv = (TextView) convertView.findViewById(R.id.tv_itemTitle);
tv.setText(this.itemsList.get(position).getTitle());
if (!this.itemsList.get(position).getVisibility()) {
tv.setVisibility(View.GONE);
}
return convertView;
}
}
答案 0 :(得分：0)
之前我遇到过这个问题，我认为你可以做到以下几点：
1-实现一个接口，如：
public interface DataPasserInterface {
public void passItemsVisibility(boolean item2_Visibility, boolean item3_visibility);
}
2 - 在您的点击监听器中，您可以执行类似下面发布的操作，当然您可以操作布尔参数以满足您的要求：
@Override
public void onViewCreated(View view, Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onViewCreated(view, savedInstanceState);
btn_enable.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
dataPasser.passItemsVisibility(true, true);
}
});
btn_disable.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
dataPasser.passItemsVisibility(false, false);
}
});
3 - 主要活动的标题应该是
public class MainActivity extends Activity implements DataPasserInterface {
4-eclipse可以自动将未实现的方法添加到您的主要活动中，然后，您只需要实现它们。
@Override
public void passItemsVisibility(boolean item2_Visibility, boolean item3_visibility) {
// TODO Auto-generated method stub
Log.d(TAG, "item2_Visibility: " + item2_Visibility);
Log.d(TAG, "item3_visibility: " + item3_visibility);
}