我使用片段创建了一个导航抽屉。当我单击其中一个抽屉项目时，我能够在Fragment中显示ListView。现在，我想在单击"列表项"时显示每个列表项的详细数据。我能做什么？请建议我如何做到这一点。
主要活动.java
public class MainActivity extends Activity {
private DrawerLayout mDrawerLayout;
private ListView mDrawerList;
private ActionBarDrawerToggle mDrawerToggle;
// nav drawer title
private CharSequence mDrawerTitle;
// used to store app title
private CharSequence mTitle;
// slide menu items
private String[] navMenuTitles;
private TypedArray navMenuIcons;
private ArrayList<NavDrawerItem> navDrawerItems;
private NavDrawerListAdapter adapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
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>();
// adding nav drawer items to array
// Home
navDrawerItems.add(new NavDrawerItem(navMenuTitles[0], navMenuIcons.getResourceId(0, -1)));
// Find People
navDrawerItems.add(new NavDrawerItem(navMenuTitles[1], navMenuIcons.getResourceId(1, -1)));
// Photos
navDrawerItems.add(new NavDrawerItem(navMenuTitles[2], navMenuIcons.getResourceId(2, -1)));
// Communities, Will add a counter here
navDrawerItems.add(new NavDrawerItem(navMenuTitles[3], navMenuIcons.getResourceId(3, -1)));
// Pages
navDrawerItems.add(new NavDrawerItem(navMenuTitles[4], navMenuIcons.getResourceId(4, -1)));
// What's hot, We will add a counter here
navDrawerItems.add(new NavDrawerItem(navMenuTitles[5], navMenuIcons.getResourceId(5, -1), true, "50+"));
// Recycle the typed array
navMenuIcons.recycle();
mDrawerList.setOnItemClickListener(new SlideMenuClickListener());
// setting the nav drawer list adapter
adapter = new NavDrawerListAdapter(getApplicationContext(),
navDrawerItems);
mDrawerList.setAdapter(adapter);
// enabling action bar app icon and behaving it as toggle button
getActionBar().setDisplayHomeAsUpEnabled(true);
getActionBar().setHomeButtonEnabled(true);
mDrawerToggle = new ActionBarDrawerToggle(this, mDrawerLayout,
R.drawable.ic_drawer, //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);
// calling onPrepareOptionsMenu() to show action bar icons
invalidateOptionsMenu();
}
public void onDrawerOpened(View drawerView) {
getActionBar().setTitle(mDrawerTitle);
// calling onPrepareOptionsMenu() to hide action bar icons
invalidateOptionsMenu();
}
};
mDrawerLayout.setDrawerListener(mDrawerToggle);
if (savedInstanceState == null) {
// on first time display view for first nav item
displayView(0);
}
}
/**
* Slide menu item click listener
* */
private class SlideMenuClickListener implements
ListView.OnItemClickListener {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position,
long id) {
// 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);
}
/**
* Diplaying fragment view for selected nav drawer list item
* */
private void displayView(int position) {
// update the main content by replacing fragments
Fragment fragment = null;
switch (position) {
case 0:
fragment = new HomeFragment();
break;
case 1:
fragment = new TutorialFragment();
break;
case 2:
fragment = new ProgramsFragment();
break;
case 3:
fragment = new CommunityFragment();
break;
case 4:
fragment = new PagesFragment();
break;
case 5:
fragment = new WhatsHotFragment();
break;
default:
break;
}
if (fragment != null) {
FragmentManager fragmentManager = getFragmentManager();
fragmentManager.beginTransaction()
.replace(R.id.frame_container, fragment).commit();
// update selected item and title, then close the drawer
mDrawerList.setItemChecked(position, true);
mDrawerList.setSelection(position);
setTitle(navMenuTitles[position]);
mDrawerLayout.closeDrawer(mDrawerList);
} else {
// error in creating fragment
Log.e("MainActivity", "Error in creating fragment");
}
}
@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);
}
}
教程片段.java
public class TutorialFragment extends Fragment {
String[] values = new String[] { "C Introduction", "Decision and Loops",
"C Functions", "Arrays and Strings", "C Pointers",
"Structure & Union", "C Files I/O", "C Enumeration",
"C Preprocessors", "C Library Functions", "C Programming Examples" };
ListView lvTutorial;
public TutorialFragment() {
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_tutorial, container,
false);
ListView lvTutorial = (ListView) rootView.findViewById(R.id.lvTutorial);
ArrayAdapter<String> adapter = new ArrayAdapter<String>(getActivity(),
android.R.layout.simple_list_item_1, values);
lvTutorial.setAdapter(adapter);
lvTutorial.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
Toast.makeText(getActivity(), "" + values[position],
Toast.LENGTH_SHORT).show();
/* Here instead Toast I want to show details of each Tutorial Topic in another fragment. */
}
});
return rootView;
}
}
在上面的ListView中，假设我单击C指针，则必须使用另一个片段打开详细的教程。在这个片段中，我想在另一个片段中发送文件名并在该片段中打开该文件。
详细教程.java
public class DetailedTutorial extends Fragment{
TextView txtView;
String filename,line;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.activity_detailedtutorial, container, false);
// txtView = (TextView) rootView.findViewById(R.id.txtview);
// filename = getActivity().getIntent().getExtras().getString("filename");
//
// line = "";
// StringBuilder builder = new StringBuilder();
// InputStream inputStream = getResources().openRawResource(R.raw.sample);
// BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));
//
// try {
// while ((line = reader.readLine()) != null) {
// builder.append(builder);
// }
// } catch (IOException e) {
// e.printStackTrace();
// }
/*In this fragment I want to show details of each List Item in TutorialFragment.java
I want to take name of List Item from TutorialFragment.java and open that file from raw folder to show detail in TextView.*/
return rootView;
}
}
我想显示教程片段中每个列表项的详细信息.java 我想从教程片段中获取列表项的名称.java并从原始文件夹中打开该文件以在文本视图中显示详细信息。
Fragment fragment = new ExperienceDetailsFragmentActivity(); // object
// of
// next
// fragment
Bundle bundle = new Bundle();
bundle.putString("companyNameString",
"abc");
// Replace whatever is in the fragment_container view with
// this fragment,
// and add the transaction to the back stack
transaction.replace(R.id.main_fragment, fragment);
transaction.addToBackStack(null);
// Commit the transaction
transaction.commit();
使用接口在列表和详细信息片段之间进行通信，以下示例可能会有所帮助
http://code.tutsplus.com/tutorials/android-sdk-using-fragments--mobile-13886
创建一个新的片段来获取详细信息，并在当前片段上添加新片段，并将信息的详细信息值传递给新片段，如下所示
FragmentManager fm = getFragmentManager();
FragmentTransaction ft = fm.beginTransaction();
fm.beginTransaction();
Fragment fragOne = new MyFragment();
Bundle arguments = new Bundle();
arguments.putInt("ValueofListPostion", position);
`fragOne.setArguments(arguments);
ft.add(R.id.main_frag_container, fragOne);
ft.addToBackStack("AnyString")l
ft.commit();