Java 替换片段并根据字符串名称而不是列表视图项位置启动活动
基于我的列表视图，我如何使用特定片段替换详细信息容器，或根据所选项目的字符串名称而不是项目在列表中的位置启动特定活动？我正在寻找类似于Java 替换片段并根据字符串名称而不是列表视图项位置启动活动,java,android,android-activity,android-listview,android-listfragment,Java,Android,Android Activity,Android Listview,Android Listfragment,基于我的列表视图，我如何使用特定片段替换详细信息容器，或根据所选项目的字符串名称而不是项目在列表中的位置启动特定活动？我正在寻找类似于案例字符串的内容，而不是案例0，案例1，案例2，等等。初始但不正确的代码建议下的代码与我正在寻找的类似，但不是正确的解决方案。我们将不胜感激 字符串 <string-array name="continent_names"> //item 0 <item>@string/africa</item> //it
案例字符串案例0案例1案例2<string-array name="continent_names">
//item 0 <item>@string/africa</item>
//item 1 <item>@string/asia</item>
//item 2 <item>@string/europe</item>
</string-array>
<string-array name="continent_descriptions">
//item 0 <item>@string/africa_description</item>
//item 1 <item>@string/asia_description </item>
//item 2 <item>@string/europe_description </item>
</string-array>
//项目0@string/非洲
//项目1@string/亚洲
//项目2@字符串/欧洲
//项目0@string/africa\u说明
//项目1@string/asia\u说明
//项目2@字符串/欧洲\u说明
public class FragmentWorld extends ListFragment implements SearchView.OnQueryTextListener {
private WorldListAdapter mAdapter;
public FragmentWorld() {
// Required empty constructor
}
public static FragmentWorld newInstance() {
return new FragmentWorld();
}
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_world, container, false);
setHasOptionsMenu(true);
initialize(view);
return view;
}
List<World> list = new ArrayList<World>();
private void initialize(View view) {
String[] items = getActivity().getResources().getStringArray(R.array.continent_names);
String[] itemDescriptions = getActivity().getResources().getStringArray(R.array.continent_descriptions);
for (int n = 0; n < items.length; n++){
World world = new World();
world.setID();
world.setName(items[n]);
world.setDescription(itemDescriptions[n]);
list.add(world);
}
mAdapter = new WorldListAdapter(list, getActivity());
setListAdapter(mAdapter);
}
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
// get the adapter, then get the name from the adapter at that position
WorldListAdapter adapter = (WorldListAdapter) parent.getAdapter();
String country = adapter.getItem(position);
if (mTwoPane) {
setItemNormal();
View rowView = view;
setItemSelected(rowView);
Fragment newFragment;
if (country.equals(view.getResources().getString(R.string.africa))) {
newFragment = new FragmentAfrica();
} else if (country.equals(view.getResources().getString(R.string.asia))) {
newFragment = new FragmentAsia();
} else if (country.equals(view.getResources().getString(R.string.europe))) {
newFragment = new FragmentEurope();
} else {
newFragment = new FragmentAfrica();
}
WorldActivity activity = (WorldActivity) view.getContext();
FragmentTransaction transaction = activity.getSupportFragmentManager().beginTransaction();
transaction.replace(R.id.detail_container, newFragment);
transaction.commit();
} else {
Intent intent;
if (country.equals(view.getResources().getString(R.string.africa))) {
intent = new Intent(getActivity(), AfricaActivity.class);
} else if (country.equals(view.getResources().getString(R.string.asia))) {
intent = new Intent(getActivity(), AsiaActivity.class);
} else if (country.equals(view.getResources().getString(R.string.europe))) {
intent = new Intent(getActivity(), EuropeActivity.class);
} else {
intent = new Intent(getActivity(), AfricaActivity.class);
}
startActivity(intent);
}
}
@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
// Set up search view
inflater.inflate(R.menu.menu_world, menu);
MenuItem item = menu.findItem(R.id.action_search);
SearchView searchView = (SearchView) MenuItemCompat.getActionView(item);
searchView.setIconifiedByDefault(true);
searchView.clearAnimation();
searchView.setOnQueryTextListener(this);
searchView.setQueryHint(getResources().getString(R.string.search_hint));
View close = searchView.findViewById(R.id.search_close_btn);
close.setBackgroundResource(R.drawable.ic_action_content_clear);
}
@Override
public boolean onQueryTextSubmit(String newText) {
return false;
}
@Override
public boolean onQueryTextChange(String newText) {
mAdapter.getFilter().filter(newText);
return false;
}
}
public class WorldListAdapter extends BaseAdapter implements Filterable {
private List<World> mData;
private List<World> mFilteredData;
private LayoutInflater mInflater;
private ItemFilter mFilter;
public WorldListAdapter (List<World> data, Context context) {
mData = data;
mFilteredData = new ArrayList(mData);
mInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
@Override
public int getCount() {
return mFilteredData.size();
}
@Override
public String getItem(int position) {
return mFilteredData.get(position).getName();
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder;
if (convertView == null) {
convertView = mInflater.inflate(R.layout.list_item_dualline, parent, false);
holder = new ViewHolder();
holder.title = (TextView) convertView.findViewById(R.id.item_name);
holder.description = (TextView) convertView.findViewById(R.id.item_description);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
holder.title.setText(mFilteredData.get(position).getName());
holder.description.setText(mFilteredData.get(position).getDescription());
return convertView;
}
@Override
public Filter getFilter() {
if (mFilter == null) {
mFilter = new ItemFilter();
}
return mFilter;
}
/**
* View holder
*/
static class ViewHolder {
private TextView title;
private TextView description;
}
private class ItemFilter extends Filter {
@Override
protected FilterResults performFiltering(CharSequence constraint) {
FilterResults results = new FilterResults();
if (TextUtils.isEmpty(constraint)) {
results.count = mData.size();
results.values = new ArrayList(mData);
} else {
//Create a new list to filter on
List<World> resultList = new ArrayList<World>();
for (World str : mData) {
if (str.getName().toLowerCase().contains(constraint.toString().toLowerCase())) {
resultList.add(str);
}
}
results.count = resultList.size();
results.values = resultList;
}
return results;
}
@SuppressWarnings("unchecked")
@Override
protected void publishResults(CharSequence constraint, FilterResults results) {
if (results.count == 0) {
mFilteredData.clear();
notifyDataSetInvalidated();
} else {
mFilteredData = (ArrayList<World>)results.values;
notifyDataSetChanged();
}
}
}
}
公共类FragmentWorld扩展ListFragment实现SearchView.OnQueryTextListener{
私人世界银行；
公共碎片世界（）{
//必需的空构造函数
}
公共静态碎片世界新实例（）{
返回新的碎片世界（）；
}
@可空
@凌驾
CreateView上的公共视图（布局、充气机、视图组容器、捆绑包保存状态）{
视图=充气机。充气（R.layout.fragment\u world，container，false）；
设置选项菜单（真）；
初始化（视图）；
返回视图；
}
列表=新的ArrayList（）；
私有void初始化（视图）{
String[]items=getActivity（）.getResources（）.getStringArray（R.array.U名称）；
String[]itemDescriptions=getActivity（）.getResources（）.getStringArray（R.array.U描述）；
对于（int n=0；n public class FragmentWorld extends ListFragment implements SearchView.OnQueryTextListener {
private WorldListAdapter mAdapter;
public FragmentWorld() {
// Required empty constructor
}
public static FragmentWorld newInstance() {
return new FragmentWorld();
}
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_world, container, false);
setHasOptionsMenu(true);
initialize(view);
return view;
}
List<World> list = new ArrayList<World>();
private void initialize(View view) {
String[] items = getActivity().getResources().getStringArray(R.array.continent_names);
String[] itemDescriptions = getActivity().getResources().getStringArray(R.array.continent_descriptions);
for (int n = 0; n < items.length; n++){
World world = new World();
world.setID();
world.setName(items[n]);
world.setDescription(itemDescriptions[n]);
list.add(world);
}
mAdapter = new WorldListAdapter(list, getActivity());
setListAdapter(mAdapter);
}
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
// get the adapter, then get the name from the adapter at that position
WorldListAdapter adapter = (WorldListAdapter) parent.getAdapter();
String country = adapter.getItem(position);
if (mTwoPane) {
setItemNormal();
View rowView = view;
setItemSelected(rowView);
Fragment newFragment;
if (country.equals(view.getResources().getString(R.string.africa))) {
newFragment = new FragmentAfrica();
} else if (country.equals(view.getResources().getString(R.string.asia))) {
newFragment = new FragmentAsia();
} else if (country.equals(view.getResources().getString(R.string.europe))) {
newFragment = new FragmentEurope();
} else {
newFragment = new FragmentAfrica();
}
WorldActivity activity = (WorldActivity) view.getContext();
FragmentTransaction transaction = activity.getSupportFragmentManager().beginTransaction();
transaction.replace(R.id.detail_container, newFragment);
transaction.commit();
} else {
Intent intent;
if (country.equals(view.getResources().getString(R.string.africa))) {
intent = new Intent(getActivity(), AfricaActivity.class);
} else if (country.equals(view.getResources().getString(R.string.asia))) {
intent = new Intent(getActivity(), AsiaActivity.class);
} else if (country.equals(view.getResources().getString(R.string.europe))) {
intent = new Intent(getActivity(), EuropeActivity.class);
} else {
intent = new Intent(getActivity(), AfricaActivity.class);
}
startActivity(intent);
}
}
@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
// Set up search view
inflater.inflate(R.menu.menu_world, menu);
MenuItem item = menu.findItem(R.id.action_search);
SearchView searchView = (SearchView) MenuItemCompat.getActionView(item);
searchView.setIconifiedByDefault(true);
searchView.clearAnimation();
searchView.setOnQueryTextListener(this);
searchView.setQueryHint(getResources().getString(R.string.search_hint));
View close = searchView.findViewById(R.id.search_close_btn);
close.setBackgroundResource(R.drawable.ic_action_content_clear);
}
@Override
public boolean onQueryTextSubmit(String newText) {
return false;
}
@Override
public boolean onQueryTextChange(String newText) {
mAdapter.getFilter().filter(newText);
return false;
}
}
public class WorldListAdapter extends BaseAdapter implements Filterable {
private List<World> mData;
private List<World> mFilteredData;
private LayoutInflater mInflater;
private ItemFilter mFilter;
public WorldListAdapter (List<World> data, Context context) {
mData = data;
mFilteredData = new ArrayList(mData);
mInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
@Override
public int getCount() {
return mFilteredData.size();
}
@Override
public String getItem(int position) {
return mFilteredData.get(position).getName();
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder;
if (convertView == null) {
convertView = mInflater.inflate(R.layout.list_item_dualline, parent, false);
holder = new ViewHolder();
holder.title = (TextView) convertView.findViewById(R.id.item_name);
holder.description = (TextView) convertView.findViewById(R.id.item_description);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
holder.title.setText(mFilteredData.get(position).getName());
holder.description.setText(mFilteredData.get(position).getDescription());
return convertView;
}
@Override
public Filter getFilter() {
if (mFilter == null) {
mFilter = new ItemFilter();
}
return mFilter;
}
/**
* View holder
*/
static class ViewHolder {
private TextView title;
private TextView description;
}
private class ItemFilter extends Filter {
@Override
protected FilterResults performFiltering(CharSequence constraint) {
FilterResults results = new FilterResults();
if (TextUtils.isEmpty(constraint)) {
results.count = mData.size();
results.values = new ArrayList(mData);
} else {
//Create a new list to filter on
List<World> resultList = new ArrayList<World>();
for (World str : mData) {
if (str.getName().toLowerCase().contains(constraint.toString().toLowerCase())) {
resultList.add(str);
}
}
results.count = resultList.size();
results.values = resultList;
}
return results;
}
@SuppressWarnings("unchecked")
@Override
protected void publishResults(CharSequence constraint, FilterResults results) {
if (results.count == 0) {
mFilteredData.clear();
notifyDataSetInvalidated();
} else {
mFilteredData = (ArrayList<World>)results.values;
notifyDataSetChanged();
}
}
}
}
公共类WorldListAdapter扩展BaseAdapter实现可过滤{
私有列表数据；
私人名单；
私人停车场；
私有项目过滤器；
公共WorldListAdapter（列表数据、上下文）{
mData=数据；
mFilteredData=新阵列列表（mData）；
mInflater=（LayoutInflater）context.getSystemService（context.LAYOUT\u充气机\u服务）；
}
@凌驾
public int getCount（）{
返回mFilteredData.size（）；
}
@凌驾
公共字符串getItem（int位置）{
返回mFilteredData.get（position.getName（）；
}