滑动菜单切换活动

Question

我正在尝试使用带有导航抽屉的滑动菜单，但使用活动而不是片段...所以我有3个活动要做：

Index.class

mTitle = mDrawerTitle = getTitle();

    // load slide menu items
    navMenuTitles = getResources().getStringArray(R.array.nav_drawer_items);

    // nav drawer icons from resources
    navMenuIcons = getResources()
            .obtainTypedArray(R.array.nav_drawer_icons);

    mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
    mDrawerList = (ListView) findViewById(R.id.list_slidermenu);

    navDrawerItems = new ArrayList<NavDrawerItem>();
    navDrawerItems.add(new NavDrawerItem(navMenuTitles[0], navMenuIcons.getResourceId(0, -1)));
    navDrawerItems.add(new NavDrawerItem(navMenuTitles[1], navMenuIcons.getResourceId(1, -1)));
    navDrawerItems.add(new NavDrawerItem(navMenuTitles[2], navMenuIcons.getResourceId(2, -1)));
    navDrawerItems.add(new NavDrawerItem(navMenuTitles[3], navMenuIcons.getResourceId(3, -1), true, "22"));
    navDrawerItems.add(new NavDrawerItem(navMenuTitles[4], navMenuIcons.getResourceId(4, -1)));
    navDrawerItems.add(new NavDrawerItem(navMenuTitles[5], navMenuIcons.getResourceId(5, -1), true, "50+"));



    navMenuIcons.recycle();

    adapter = new NavDrawerListAdapter(getApplicationContext(),
            navDrawerItems);
    mDrawerList.setAdapter(adapter);


    getActionBar().setDisplayHomeAsUpEnabled(true);
    getActionBar().setHomeButtonEnabled(true);

    mDrawerToggle = new ActionBarDrawerToggle(this, mDrawerLayout,
            R.drawable.ic_drawer, 
            R.string.app_name, 
            R.string.app_name 
    ) {
        public void onDrawerClosed(View view) {
            getActionBar().setTitle(mTitle);

            invalidateOptionsMenu();
        }

        public void onDrawerOpened(View drawerView) {
            getActionBar().setTitle(mDrawerTitle);

            invalidateOptionsMenu();
        }
    };
    mDrawerLayout.setDrawerListener(mDrawerToggle);

    if (savedInstanceState == null) {

        displayView(0);
    }
}

/**
 * Slide menu item click listener
 * */
public class SlideMenuClickListener implements
        ListView.OnItemClickListener {
    @Override
    public void onItemClick(AdapterView<?> arg0, View arg1, int position, long arg3) {
        // display view for selected nav drawer item
        displayView(position);
    }
}

@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 (mDrawerToggle.onOptionsItemSelected(item)) {
        return true;
    }
    // Handle action bar actions click
    switch (item.getItemId()) {
    case R.id.action_settings:
        return true;
    default:
        return super.onOptionsItemSelected(item);
    }
}

/***
 * Called when invalidateOptionsMenu() is triggered
 */
@Override
public boolean onPrepareOptionsMenu(Menu menu) {
    // if nav drawer is opened, hide the action items
    boolean drawerOpen = mDrawerLayout.isDrawerOpen(mDrawerList);
    menu.findItem(R.id.action_settings).setVisible(!drawerOpen);
    return super.onPrepareOptionsMenu(menu);
}


private void displayView(int position) {
    switch (position) {
    case 0:
        Intent case0 = new Intent(this, Home.class); 
        startActivity(case0);
        break;
    case 1:
        Intent case1 = new Intent(this, FindPeople.class); 
        startActivity(case1);
        break;
    case 2:
        Intent case2 = new Intent(this, Photos.class); 
        startActivity(case2);
        break;
    case 3:
        Intent case3 = new Intent(this, Community.class); 
        startActivity(case3);
        break;
    case 4:
        Intent case4 = new Intent(this, Pages.class); 
        startActivity(case4);
        break;
    case 5:
        Intent case5 = new Intent(this, WhatsHot.class); 
        startActivity(case5);
        break;

    default:
        break;
    }

}
    @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.
        mDrawerToggle.syncState();
    }

    @Override
    public void onConfigurationChanged(Configuration newConfig) {
        super.onConfigurationChanged(newConfig);
        // Pass any configuration change to the drawer toggls
        mDrawerToggle.onConfigurationChanged(newConfig);
    }

NavDraweList.class

private Context context;
private ArrayList<NavDrawerItem> navDrawerItems;

public NavDrawerListAdapter(Context context, ArrayList<NavDrawerItem> navDrawerItems){
    this.context = context;
    this.navDrawerItems = navDrawerItems;
}

@Override
public int getCount() {
    return navDrawerItems.size();
}

@Override
public Object getItem(int position) {       
    return navDrawerItems.get(position);
}

@Override
public long getItemId(int position) {
    return position;
}

@Override
public View getView(int position, View convertView, ViewGroup parent) {
    if (convertView == null) {
        LayoutInflater mInflater = (LayoutInflater)
                context.getSystemService(Activity.LAYOUT_INFLATER_SERVICE);
        convertView = mInflater.inflate(R.layout.drawer_list_item, null);
    }

    ImageView imgIcon = (ImageView) convertView.findViewById(R.id.icon);
    TextView txtTitle = (TextView) convertView.findViewById(R.id.title);
    TextView txtCount = (TextView) convertView.findViewById(R.id.counter);

    imgIcon.setImageResource(navDrawerItems.get(position).getIcon());        
    txtTitle.setText(navDrawerItems.get(position).getTitle());

    // displaying count
    // check whether it set visible or not
    if(navDrawerItems.get(position).getCounterVisibility()){
        txtCount.setText(navDrawerItems.get(position).getCount());
    }else{
        // hide the counter view
        txtCount.setVisibility(View.GONE);
    }

    return convertView;
}

NavDrawerItem.class

private String title;
private int icon;
private String count = "0";
// boolean to set visiblity of the counter
private boolean isCounterVisible = false;

public NavDrawerItem(){}

public NavDrawerItem(String title, int icon){
    this.title = title;
    this.icon = icon;
}

public NavDrawerItem(String title, int icon, boolean isCounterVisible, String count){
    this.title = title;
    this.icon = icon;
    this.isCounterVisible = isCounterVisible;
    this.count = count;
}

public String getTitle(){
    return this.title;
}

public int getIcon(){
    return this.icon;
}

public String getCount(){
    return this.count;
}

public boolean getCounterVisibility(){
    return this.isCounterVisible;
}

public void setTitle(String title){
    this.title = title;
}

public void setIcon(int icon){
    this.icon = icon;
}

public void setCount(String count){
    this.count = count;
}

public void setCounterVisibility(boolean isCounterVisible){
    this.isCounterVisible = isCounterVisible;
}

虽然我使用片段一切都很好，但我修改代码以尝试使用活动，应用程序向我显示黑屏而不是菜单和活动。所以要恢复，我试图在多个活动中显示相同的slinding菜单，因为片段有点限于某些事情......

我希望你能帮助我:)。