我要将您添加到我的无限项中，但是我不能，因为当项数太大时，程序崩溃，并且项被移动并且列表不是无限的。我很高兴能帮助您公共类NavDrawerListAdapter扩展BaseAdapter {
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);
if (position == 0) {
convertView = mInflater.inflate(R.layout.drawer_list_item_head, null);
}
else if (position == 7) {
convertView = mInflater.inflate(R.layout.drawer_list_item_divider, null);
}
else if (position == 9) {
convertView = mInflater.inflate(R.layout.drawer_list_item_divider, null);
} else if (position == 11) {
convertView = mInflater.inflate(R.layout.drawer_list_item_divider, null);
}
else if (position == 13) {
convertView = mInflater.inflate(R.layout.drawer_list_item_divider, null);
}
else if (position == 15) {
convertView = mInflater.inflate(R.layout.drawer_list_item_divider, null);
}
else {
if (!Settings_Activity.loadNightMode(context)) {
convertView = mInflater.inflate(R.layout.drawer_list_item, null);
} else {
convertView = mInflater.inflate(R.layout.drawer_list_item_dark, null);
}
}
}
if (position !=0& position !=7& position !=9& position !=11& position !=13& position !=15) {
ImageView imgIcon = (ImageView) convertView.findViewById(R.id.icon);
TextViewPlus txtTitle = (TextViewPlus) convertView.findViewById(R.id.drawertitle);
imgIcon.setImageResource(navDrawerItems.get(position).getIcon());
txtTitle.setText(navDrawerItems.get(position).getTitle());
}
return convertView;
}
公共类NavConstructor {
public static int which_act;
public static Context cc;
public static Activity ac;
public static ListView _mDrawerList;
public static DrawerLayout _mDrawerLayout;
public static int defpos;
public static String[] _navMenuTitles;
public static TypedArray _navMenuIcons;
public static ArrayList<NavDrawerItem> _navDrawerItems;
public static NavDrawerListAdapter _adapter;
public static boolean intenthappennav = false;
@SuppressWarnings("ResourceType")
public static void Build(Context context, ListView mDrawerList,
DrawerLayout mDrawerLayout, int DEFAULT_POSITION) {
_mDrawerList = mDrawerList;
_mDrawerLayout = mDrawerLayout;
cc = context;
ac = (Activity) context;
defpos = DEFAULT_POSITION;
intenthappennav = false;
_navMenuTitles = context.getResources().getStringArray(R.array.nav_drawer_items);
// nav drawer icons from resources
_navMenuIcons = context.getResources()
.obtainTypedArray(R.array.nav_drawer_icons_dark);
_navDrawerItems = new ArrayList<NavDrawerItem>();
_navDrawerItems.add(new NavDrawerItem());
_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)));
_navDrawerItems.add(new NavDrawerItem(_navMenuTitles[4], _navMenuIcons.getResourceId(4, -1)));
_navDrawerItems.add(new NavDrawerItem(_navMenuTitles[5], _navMenuIcons.getResourceId(5, -1)));
_navDrawerItems.add(new NavDrawerItem(_navMenuTitles[6], _navMenuIcons.getResourceId(6, -1)));
_navDrawerItems.add(new NavDrawerItem());
_navDrawerItems.add(new NavDrawerItem(_navMenuTitles[7], _navMenuIcons.getResourceId(7, -1)));
_navDrawerItems.add(new NavDrawerItem());
_navDrawerItems.add(new NavDrawerItem(_navMenuTitles[8], _navMenuIcons.getResourceId(8, -1)));
_navDrawerItems.add(new NavDrawerItem());
_navDrawerItems.add(new NavDrawerItem(_navMenuTitles[9], _navMenuIcons.getResourceId(9, -1)));
_navDrawerItems.add(new NavDrawerItem());
_navDrawerItems.add(new NavDrawerItem(_navMenuTitles[10], _navMenuIcons.getResourceId(10, -1)));
_navDrawerItems.add(new NavDrawerItem());
_navDrawerItems.add(new NavDrawerItem(_navMenuTitles[11], _navMenuIcons.getResourceId(11, -1)));
_navDrawerItems.add(new NavDrawerItem(_navMenuTitles[12], _navMenuIcons.getResourceId(12, -1)));
// Recycle the typed array
_navMenuIcons.recycle();
// setting the nav drawer list adapter
_adapter = new NavDrawerListAdapter(context.getApplicationContext(), _navDrawerItems);
mDrawerList.setAdapter(_adapter);
mDrawerList.setOnItemClickListener(new SlideMenuClickListener());
}
public static class SlideMenuClickListener implements
ListView.OnItemClickListener {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position,
long id) {
displayView(position);
}
}
public static void displayView(int position) {
switch (position) {
case 1:
which_act = 1;
break;
case 2:
which_act = 2;
break;
case 3:
which_act = 3;
break;
case 4:
which_act = 4;
break;
case 5:
which_act = 5;
break;
case 6:
which_act = 6;
break;
case 7:
which_act = 7;
break;
case 8:
which_act = 8;
break;
case 9:
which_act = 9;
break;
case 10:
which_act = 10;
break;
case 11:
which_act = 11;
break;
case 12:
which_act = 12;
break;
case 13:
which_act = 13;
break;
case 14:
which_act = 14;
break;
case 15:
which_act = 15;
break;
case 16:
which_act = 16;
break;
case 17:
which_act = 17;
break;
default:
break;
}
if (position != 0) {
_mDrawerList.setItemChecked(position, true);
_mDrawerList.setSelection(position);
_mDrawerLayout.closeDrawer(_mDrawerList);
} else {
_mDrawerList.setItemChecked(defpos, true);
_mDrawerList.setSelection(defpos);
}
NavigationClosed();
}
public static void NavigationClosed() {
final Handler handler = new Handler();
handler.postDelayed(new Runnable() {
@Override
public void run() {
switch (which_act) {
case 0:
break;
case 1: //main menu
if (defpos != 1) {
intenthappennav = true;
Intent i1 = new Intent(cc, MainMenu.class);
ac.startActivity(i1);
ac.overridePendingTransition(R.anim.fadein, R.anim.fadeout);
//ac.finish();
}
break;
case 2: //content
if (defpos != 2) {
intenthappennav = true;
Intent i2;
if (MainMenu.tabnum == 1) {
i2 = new Intent(cc, ContentMenu.class);
} else {
i2 = new Intent(cc, SeasonMenu.class);
}
ac.startActivity(i2);
ac.overridePendingTransition(R.anim.fadein, R.anim.fadeout);
//ac.finish();
}
break;
case 3: // favorite
if (defpos != 3) {
intenthappennav = true;
Intent i3 = new Intent(cc, Favorites.class);
ac.startActivity(i3);
ac.overridePendingTransition(R.anim.fadein, R.anim.fadeout);
//ac.finish();
}
break;
case 4: // search
if (defpos != 4) {
intenthappennav = true;
Intent i4 = new Intent(cc, Search_all.class);
i4.putExtra("nav", true);
i4.putExtra("defpos", defpos);
ac.startActivity(i4);
ac.overridePendingTransition(R.anim.fadein, R.anim.fadeout);
}
break;
case 5: //settings
if (defpos != 5) {
intenthappennav = true;
Intent i6 = new Intent(cc, Settings_Activity.class);
ac.startActivity(i6);
ac.overridePendingTransition(R.anim.fadein, R.anim.fadeout);
//ac.finish();
}
break;
case 6: //aboutus
if (defpos != 6) {
intenthappennav = true;
Intent i7 = new Intent(cc, AboutUs.class);
ac.startActivity(i7);
ac.overridePendingTransition(R.anim.fadein, R.anim.fadeout);
//ac.finish();
}
break;
case 7:
break;
case 8: //aboutus
if (defpos != 8) {
intenthappennav = true;
Intent i9 = new Intent(cc, WebView1.class);
ac.startActivity(i9);
ac.overridePendingTransition(R.anim.fadein, R.anim.fadeout);
//ac.finish();
}
break;
case 9:
break;
case 10: //aboutus
if (defpos != 10) {
intenthappennav = true;
Intent i9 = new Intent(cc, WebView2.class);
ac.startActivity(i9);
ac.overridePendingTransition(R.anim.fadein, R.anim.fadeout);
//ac.finish();
}
break;
case 11:
break;
case 12: //aboutus
if (defpos != 12) {
intenthappennav = true;
Intent i9 = new Intent(cc, WebView3.class);
ac.startActivity(i9);
ac.overridePendingTransition(R.anim.fadein, R.anim.fadeout);
//ac.finish();
}
break;
case 13:
break;
case 14: //aboutus
if (defpos != 14) {
intenthappennav = true;
Intent i9 = new Intent(cc, WebView4.class);
ac.startActivity(i9);
ac.overridePendingTransition(R.anim.fadein, R.anim.fadeout);
//ac.finish();
}
break;
case 15:
break;
case 16: //aboutus
if (defpos != 16) {
intenthappennav = true;
Intent i9 = new Intent(cc, WebView5.class);
ac.startActivity(i9);
ac.overridePendingTransition(R.anim.fadein, R.anim.fadeout);
//ac.finish();
}
break;
case 17: //aboutus
if (defpos != 17) {
intenthappennav = true;
Intent i9 = new Intent(cc, WebView6.class);
ac.startActivity(i9);
ac.overridePendingTransition(R.anim.fadein, R.anim.fadeout);
//ac.finish();
}
break;
}
}
}, 250);
}
}
公共类NavDrawerItem {
private String title;
private int icon;
public NavDrawerItem(String title, int icon){
this.title = title;
this.icon = icon;
}
public NavDrawerItem(){
}
public String getTitle(){
return this.title;
}
public int getIcon(){
return this.icon;
}
}
答案 0 :(得分：1)
这是一个列表视图的示例。由于以下代码holder.fill（this，item，position）;
public class AdapterNote extends ArrayAdapter<StructNote> {
public AdapterNote(ArrayList<StructNote> array) {
super(G.context, R.layout.adapter_notes, array);
}
private static class ViewHolder {
public ViewGroup layoutRoot;
public TextView txtTitle;
public TextView txtDescription;
public CheckBox chkDone;
public ImageView imgDelete;
public ViewHolder(View view) {
txtTitle = (TextView) view.findViewById(R.id.txtTitle);
txtDescription = (TextView) view.findViewById(R.id.txtDescription);
chkDone = (CheckBox) view.findViewById(R.id.chkDone);
layoutRoot = (ViewGroup) view.findViewById(R.id.layoutRoot);
imgDelete = (ImageView) view.findViewById(R.id.imgDelete);
}
public void fill(final ArrayAdapter<StructNote> adapter, final StructNote item, final int position) {
txtTitle.setText(item.title);
txtDescription.setText(item.description);
chkDone.setChecked(item.done);
imgDelete.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
adapter.remove(item);
}
});
layoutRoot.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
Intent intent = new Intent(G.currentActivity, ActivityEdit.class);
intent.putExtra("POSITION", position);
G.currentActivity.startActivity(intent);
}
});
chkDone.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View view) {
CheckBox checkBox = (CheckBox) view;
item.done = checkBox.isChecked();
if (item.done) {
txtTitle.setTextColor(Color.RED);
} else {
txtTitle.setTextColor(Color.WHITE);
}
}
});
if (item.done) {
txtTitle.setTextColor(Color.RED);
} else {
txtTitle.setTextColor(Color.WHITE);
}
}
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder;
StructNote item = getItem(position);
if (convertView == null) {
convertView = G.inflater.inflate(R.layout.adapter_notes, parent, false);
holder = new ViewHolder(convertView);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
holder.fill(this, item, position);
return convertView;
}
}