fragment

问题 in my NavigationDrawerFragment.java i have this code expListView.setOnChildClickListener(new ExpandableListView.OnChildClickListener() { @Override public boolean onChildClick(ExpandableListView parent, View v, int groupPosition, int childPosition, long id) { String header = listDataHeader.get(groupPosition); Category child = listDataChild.get(header).get(childPosition); // child.name to get the name // child.id to get the id //Toast.makeText(getActivity(),"ChildNme: "+child.name+" ChildId: "

问题 I have created an application where I have 3 tabs and in the last one I have added a map, and here is the error because I get an error navigating with the tabs. Take a look below the code Tab fragment: public class Tab3 extends Fragment { @Override public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) { View v = inflater.inflate(R.layout.tab_3, container, false); return v; } } xml: <?xml version="1.0" encoding="utf-8"?>

问题 I am currently working on a program that uses an MVC design pattern and fragments in android java. I have figured out one of my fragments and gotten it working but when I copied the other fragments to follow the same code structure (with specialized functionality), I get a null pointer exception in the onCreateView method. I'm on my junk laptop right now and it can't seem to handle android emulation so I can post the exact error code tomorrow. I have my source code though and I have been

问题 I have a singleInstance Activity and a Fragment which I instantiate in the onCreate() method and add into a FrameLayout container into the layout of the activity. The activity does nothing except printing out the logs. I am using the android-support-v4 lib and android 2.3.3. I observed a strange lifecycle behavior with this setting and I wonder if you might help me to explain this. I will provide the logs for the lifecycles: First call of the activity: 07-07 15:12:17.990 V/FragActivity( 2358)

问题 I have code that should populate my ListView in my UrlListFragment, but when I run it I see no effect. I put the problem aside to work on my WebView, and found that once I load a URL it uses the entire screen. I'm not sure if this means my ListView isn't being populated, so it doesn't take up space, so the WebView takes up the entire screen, or if the WebView is taking up the entire screen regardless of whether the ListView is being populated or not. I populate my ListView like this: View

问题 I'm making a new app, using the "Swipe View + Tile Strip" layout, but can't seem to figure out how to actually load different views into the fragments of the FragmentPagerAdapter? Any help on this would be great (I'm still quite new to android development, so go easy ;) ) 回答1: Create a class that extends FragmentPagerAdapter . Override getItem() and return a different fragment for each position. Try something like this: public class MyCustomFPAdapter extends FragmentPagerAdapter{ public

问题 In 'Landscape' mode I have two FrameLayouts controlled by One Activity and utilizing two Fragments. In 'Portrait' mode I have one FrameLayout controlled by One Activity, on Selecting a Line I call another activity to display the detail using a detail fragment In the 'Portrait' detail activity I have the following check for orientation in the onCreate() method. if (getResources().getConfiguration().orientation == Configuration.ORIENTATION_LANDSCAPE) { finish(); return; } The above works well

问题 I have a Fragment pager, I built a button on the first fragment. Now I want to make it swipe to the second fragment when I click on that button. I built this so far: public class HowTo extends Fragment { @TargetApi(Build.VERSION_CODES.JELLY_BEAN) @Override public View onCreateView(final LayoutInflater inflater, final ViewGroup container, Bundle savedInstanceState) { View android = inflater.inflate(R.layout.how_to, container, false); ((TextView) android.findViewById(R.id.howTo)).setText("howto

问题 I have the following activity which launches a fragment when the tab is selected: public class MainActivity extends Activity implements TabListener { Fragment f = null; ..... public void onTabSelected(Tab tab, FragmentTransaction ft) { ..... if (tab.getPosition() == 0) { if (initalSync == true) { progress1.setVisibility(TRIM_MEMORY_UI_HIDDEN); } f = new EventFragment(); Bundle data = new Bundle(); data.putInt("idx", tab.getPosition()); f.setArguments(data); } if (tab.getPosition() == 1) {

问题 xml: <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent"> <fragment android:id="@+id/the_fragment" android:name="com.example.MyFragment" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_alignParentBottom="true" tools:layout="@layout/fragment_my"/> <Button android