Android: ListView-in Fragment-Layout
Ich versuche, fügen Sie ein ListView in einem Fragment, das nicht nur ein ListFragment. Ich will die tabs on top, als in dem Fragment einer ListView. Mein code kompiliert werden, gut, aber stürzt ab, wenn ich starten Sie es.
Hier ist das Fragment, ich bin versuchen, um das ListView zu.
public static class MainFragment extends Fragment {
public static final String ARG_SECTION_NUMBER = "section_number";
public MainFragment() {
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
//Create a new TextView and set its text to the fragment's section
//number argument value.
View V = inflater.inflate(R.layout.main, container, false);
ListView LV = (ListView) this.getActivity().findViewById(R.id.mainList);
String List[] = new String[2];
List[0] = "tst1";
List[1] ="tst2";
ArrayAdapter<String> aa = new ArrayAdapter<String>(getActivity(), android.R.layout.simple_list_item_2, List);
LV.setAdapter(aa);
return V;
}
}Mein log cat sagt, es stürzt auf LV.setAdapter(aa);
Und hier ist der vollständige code, den Aufruf der Fragmente
public class MainCalActivity extends FragmentActivity implements ActionBar.TabListener {
SectionsPagerAdapter mSectionsPagerAdapter;
/**
* The {@link ViewPager} that will host the section contents.
*/
ViewPager mViewPager;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main_cal);
//Set up the action bar.
final ActionBar actionBar = getActionBar();
actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
//Create the adapter that will return a fragment for each of the three
//primary sections of the app.
mSectionsPagerAdapter = new SectionsPagerAdapter(getSupportFragmentManager());
//Set up the ViewPager with the sections adapter.
mViewPager = (ViewPager) findViewById(R.id.pager);
mViewPager.setAdapter(mSectionsPagerAdapter);
//When swiping between different sections, select the corresponding
//tab. We can also use ActionBar.Tab#select() to do this if we have
//a reference to the Tab.
mViewPager.setOnPageChangeListener(new ViewPager.SimpleOnPageChangeListener() {
@Override
public void onPageSelected(int position) {
actionBar.setSelectedNavigationItem(position);
}
});
//For each of the sections in the app, add a tab to the action bar.
for (int i = 0; i < mSectionsPagerAdapter.getCount(); i++) {
//Create a tab with text corresponding to the page title defined by
//the adapter. Also specify this Activity object, which implements
//the TabListener interface, as the callback (listener) for when
//this tab is selected.
actionBar.addTab(
actionBar.newTab()
.setText(mSectionsPagerAdapter.getPageTitle(i))
.setTabListener(this));
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
//Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.activity_main_cal, menu);
return true;
}
@Override
public void onTabSelected(ActionBar.Tab tab, FragmentTransaction fragmentTransaction) {
//When the given tab is selected, switch to the corresponding page in
//the ViewPager.
mViewPager.setCurrentItem(tab.getPosition());
}
@Override
public void onTabUnselected(ActionBar.Tab tab, FragmentTransaction fragmentTransaction) {
}
@Override
public void onTabReselected(ActionBar.Tab tab, FragmentTransaction fragmentTransaction) {
}
/**
* A {@link FragmentPagerAdapter} that returns a fragment corresponding to
* one of the sections/tabs/pages.
*/
public class SectionsPagerAdapter extends FragmentPagerAdapter {
public SectionsPagerAdapter(FragmentManager fm) {
super(fm);
}
@Override
public Fragment getItem(int position) {
//getItem is called to instantiate the fragment for the given page.
//Return a DummySectionFragment (defined as a static inner class
//below) with the page number as its lone argument.
Fragment fragment;
Bundle args = new Bundle();
if(position == 0)
{
fragment = new MainFragment();
args.putInt(MainFragment.ARG_SECTION_NUMBER, position + 1);
fragment.setArguments(args);
return fragment;
} else
{
fragment = new CalFragment();
args.putInt(MainFragment.ARG_SECTION_NUMBER, position + 1);
fragment.setArguments(args);
return fragment;
}
}
@Override
public int getCount() {
//Show 2 total pages.
return 2;
}
@Override
public CharSequence getPageTitle(int position) {
switch (position) {
case 0:
return getString(R.string.main);
case 1:
return getString(R.string.cal);
}
return null;
}
}
/**
* The Main fragment argument representing the main menu
*/
public static class MainFragment extends Fragment {
public static final String ARG_SECTION_NUMBER = "section_number";
public MainFragment() {
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
//Create a new TextView and set its text to the fragment's section
//number argument value.
View V = inflater.inflate(R.layout.main, container, false);
ListView LV = (ListView) this.getActivity().findViewById(R.id.mainList);
String List[] = new String[2];
List[0] = "tst1";
List[1] ="tst2";
ArrayAdapter<String> aa = new ArrayAdapter<String>(getActivity(), android.R.layout.simple_list_item_2, List);
LV.setAdapter(aa);
return V;
}
}
/**
* The Calendar fragment argument representing the Calendar
*/
public static class CalFragment extends Fragment {
/**
* The Calendar fragment argument representing the Calendar
*/
public static final String ARG_SECTION_NUMBER = "section_number";
public CalFragment() {
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View V = inflater.inflate(R.layout.cal, container, false);
return V;
}
}}
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/main"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<TextView
vandroid:id="@+id/TextView01"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:text="@string/addS"
android:textSize="30sp" />
<EditText
android:id="@+id/editText1"
android:layout_width="246dp"
android:layout_height="wrap_content"
android:ems="10"
android:hint="@string/stuff" >
<requestFocus />
</EditText>
<Button
android:id="@+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="right"
android:gravity="right"
android:text="@string/add" />
<ListView
android:id="@+id/mainList"
android:layout_width="match_parent"
android:layout_height="wrap_content" >
</ListView>
</LinearLayout>und mein log cat
03-21 13:15:13.845: E/ArrayAdapter(837): You must supply a resource ID for a TextView
03-21 13:15:14.015: E/AndroidRuntime(837): FATAL EXCEPTION: main
03-21 13:15:14.015: E/AndroidRuntime(837): java.lang.IllegalStateException: ArrayAdapter requires the resource ID to be a TextView
03-21 13:15:14.015: E/AndroidRuntime(837): at android.widget.ArrayAdapter.createViewFromResource(ArrayAdapter.java:386)
03-21 13:15:14.015: E/AndroidRuntime(837): at android.widget.ArrayAdapter.getView(ArrayAdapter.java:362)
03-21 13:15:14.015: E/AndroidRuntime(837): at android.widget.AbsListView.obtainView(AbsListView.java:2159)
03-21 13:15:14.015: E/AndroidRuntime(837): at android.widget.ListView.measureHeightOfChildren(ListView.java:1246)
03-21 13:15:14.015: E/AndroidRuntime(837): at android.widget.ListView.onMeasure(ListView.java:1158)
03-21 13:15:14.015: E/AndroidRuntime(837): at android.view.View.measure(View.java:15513)
03-21 13:15:14.015: E/AndroidRuntime(837): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4827)
03-21 13:15:14.015: E/AndroidRuntime(837): at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1404)
03-21 13:15:14.015: E/AndroidRuntime(837): at android.widget.LinearLayout.measureVertical(LinearLayout.java:695)
03-21 13:15:14.015: E/AndroidRuntime(837): at android.widget.LinearLayout.onMeasure(LinearLayout.java:588)
03-21 13:15:14.015: E/AndroidRuntime(837): at android.view.View.measure(View.java:15513)
03-21 13:15:14.015: E/AndroidRuntime(837): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4827)
03-21 13:15:14.015: E/AndroidRuntime(837): at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
03-21 13:15:14.015: E/AndroidRuntime(837): at android.view.View.measure(View.java:15513)
03-21 13:15:14.015: E/AndroidRuntime(837): at android.support.v4.view.ViewPager.onMeasure(ViewPager.java:1381)
03-21 13:15:14.015: E/AndroidRuntime(837): at android.view.View.measure(View.java:15513)
03-21 13:15:14.015: E/AndroidRuntime(837): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4827)
03-21 13:15:14.015: E/AndroidRuntime(837): at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
03-21 13:15:14.015: E/AndroidRuntime(837): at android.view.View.measure(View.java:15513)
03-21 13:15:14.015: E/AndroidRuntime(837): at android.widget.LinearLayout.measureVertical(LinearLayout.java:847)
03-21 13:15:14.015: E/AndroidRuntime(837): at android.widget.LinearLayout.onMeasure(LinearLayout.java:588)
03-21 13:15:14.015: E/AndroidRuntime(837): at android.view.View.measure(View.java:15513)
03-21 13:15:14.015: E/AndroidRuntime(837): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4827)
03-21 13:15:14.015: E/AndroidRuntime(837): at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
03-21 13:15:14.015: E/AndroidRuntime(837): at com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2176)
03-21 13:15:14.015: E/AndroidRuntime(837): at android.view.View.measure(View.java:15513)
03-21 13:15:14.015: E/AndroidRuntime(837): at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:1874)
03-21 13:15:14.015: E/AndroidRuntime(837): at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1089)
03-21 13:15:14.015: E/AndroidRuntime(837): at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1265)
03-21 13:15:14.015: E/AndroidRuntime(837): at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:989)
03-21 13:15:14.015: E/AndroidRuntime(837): at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:4351)
03-21 13:15:14.015: E/AndroidRuntime(837): at android.view.Choreographer$CallbackRecord.run(Choreographer.java:749)
03-21 13:15:14.015: E/AndroidRuntime(837): at android.view.Choreographer.doCallbacks(Choreographer.java:562)
03-21 13:15:14.015: E/AndroidRuntime(837): at android.view.Choreographer.doFrame(Choreographer.java:532)
03-21 13:15:14.015: E/AndroidRuntime(837): at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:735)
03-21 13:15:14.015: E/AndroidRuntime(837): at android.os.Handler.handleCallback(Handler.java:725)
03-21 13:15:14.015: E/AndroidRuntime(837): at android.os.Handler.dispatchMessage(Handler.java:92)
03-21 13:15:14.015: E/AndroidRuntime(837): at android.os.Looper.loop(Looper.java:137)
03-21 13:15:14.015: E/AndroidRuntime(837): at android.app.ActivityThread.main(ActivityThread.java:5039)
03-21 13:15:14.015: E/AndroidRuntime(837): at java.lang.reflect.Method.invokeNative(Native Method)
03-21 13:15:14.015: E/AndroidRuntime(837): at java.lang.reflect.Method.invoke(Method.java:511)
03-21 13:15:14.015: E/AndroidRuntime(837): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
03-21 13:15:14.015: E/AndroidRuntime(837): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
03-21 13:15:14.015: E/AndroidRuntime(837): at dalvik.system.NativeStart.main(Native Method)
03-21 13:15:14.015: E/AndroidRuntime(837): Caused by: java.lang.ClassCastException: android.widget.TwoLineListItem cannot be cast to android.widget.TextView
03-21 13:15:14.015: E/AndroidRuntime(837): at android.widget.ArrayAdapter.createViewFromResource(ArrayAdapter.java:379)
03-21 13:15:14.015: E/AndroidRuntime(837): ... 43 more
03-21 13:15:39.406: E/Trace(915): error opening trace file: No such file or directory (2)
03-21 13:15:40.465: E/ArrayAdapter(915): You must supply a resource ID for a TextView
03-21 13:15:40.495: E/AndroidRuntime(915): FATAL EXCEPTION: main
03-21 13:15:40.495: E/AndroidRuntime(915): java.lang.IllegalStateException: ArrayAdapter requires the resource ID to be a TextView
03-21 13:15:40.495: E/AndroidRuntime(915): at android.widget.ArrayAdapter.createViewFromResource(ArrayAdapter.java:386)
03-21 13:15:40.495: E/AndroidRuntime(915): at android.widget.ArrayAdapter.getView(ArrayAdapter.java:362)
03-21 13:15:40.495: E/AndroidRuntime(915): at android.widget.AbsListView.obtainView(AbsListView.java:2159)
03-21 13:15:40.495: E/AndroidRuntime(915): at android.widget.ListView.measureHeightOfChildren(ListView.java:1246)
03-21 13:15:40.495: E/AndroidRuntime(915): at android.widget.ListView.onMeasure(ListView.java:1158)
03-21 13:15:40.495: E/AndroidRuntime(915): at android.view.View.measure(View.java:15513)
03-21 13:15:40.495: E/AndroidRuntime(915): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4827)
03-21 13:15:40.495: E/AndroidRuntime(915): at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1404)
03-21 13:15:40.495: E/AndroidRuntime(915): at android.widget.LinearLayout.measureVertical(LinearLayout.java:695)
03-21 13:15:40.495: E/AndroidRuntime(915): at android.widget.LinearLayout.onMeasure(LinearLayout.java:588)
03-21 13:15:40.495: E/AndroidRuntime(915): at android.view.View.measure(View.java:15513)
03-21 13:15:40.495: E/AndroidRuntime(915): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4827)
03-21 13:15:40.495: E/AndroidRuntime(915): at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
03-21 13:15:40.495: E/AndroidRuntime(915): at android.view.View.measure(View.java:15513)
03-21 13:15:40.495: E/AndroidRuntime(915): at android.support.v4.view.ViewPager.onMeasure(ViewPager.java:1381)
03-21 13:15:40.495: E/AndroidRuntime(915): at android.view.View.measure(View.java:15513)
03-21 13:15:40.495: E/AndroidRuntime(915): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4827)
03-21 13:15:40.495: E/AndroidRuntime(915): at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
03-21 13:15:40.495: E/AndroidRuntime(915): at android.view.View.measure(View.java:15513)
03-21 13:15:40.495: E/AndroidRuntime(915): at android.widget.LinearLayout.measureVertical(LinearLayout.java:847)
03-21 13:15:40.495: E/AndroidRuntime(915): at android.widget.LinearLayout.onMeasure(LinearLayout.java:588)
03-21 13:15:40.495: E/AndroidRuntime(915): at android.view.View.measure(View.java:15513)
03-21 13:15:40.495: E/AndroidRuntime(915): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4827)
03-21 13:15:40.495: E/AndroidRuntime(915): at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
03-21 13:15:40.495: E/AndroidRuntime(915): at com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2176)
03-21 13:15:40.495: E/AndroidRuntime(915): at android.view.View.measure(View.java:15513)
03-21 13:15:40.495: E/AndroidRuntime(915): at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:1874)
03-21 13:15:40.495: E/AndroidRuntime(915): at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1089)
03-21 13:15:40.495: E/AndroidRuntime(915): at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1265)
03-21 13:15:40.495: E/AndroidRuntime(915): at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:989)
03-21 13:15:40.495: E/AndroidRuntime(915): at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:4351)
03-21 13:15:40.495: E/AndroidRuntime(915): at android.view.Choreographer$CallbackRecord.run(Choreographer.java:749)
03-21 13:15:40.495: E/AndroidRuntime(915): at android.view.Choreographer.doCallbacks(Choreographer.java:562)
03-21 13:15:40.495: E/AndroidRuntime(915): at android.view.Choreographer.doFrame(Choreographer.java:532)
03-21 13:15:40.495: E/AndroidRuntime(915): at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:735)
03-21 13:15:40.495: E/AndroidRuntime(915): at android.os.Handler.handleCallback(Handler.java:725)
03-21 13:15:40.495: E/AndroidRuntime(915): at android.os.Handler.dispatchMessage(Handler.java:92)
03-21 13:15:40.495: E/AndroidRuntime(915): at android.os.Looper.loop(Looper.java:137)
03-21 13:15:40.495: E/AndroidRuntime(915): at android.app.ActivityThread.main(ActivityThread.java:5039)
03-21 13:15:40.495: E/AndroidRuntime(915): at java.lang.reflect.Method.invokeNative(Native Method)
03-21 13:15:40.495: E/AndroidRuntime(915): at java.lang.reflect.Method.invoke(Method.java:511)
03-21 13:15:40.495: E/AndroidRuntime(915): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
03-21 13:15:40.495: E/AndroidRuntime(915): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
03-21 13:15:40.495: E/AndroidRuntime(915): at dalvik.system.NativeStart.main(Native Method)
03-21 13:15:40.495: E/AndroidRuntime(915): Caused by: java.lang.ClassCastException: android.widget.TwoLineListItem cannot be cast to android.widget.TextView
03-21 13:15:40.495: E/AndroidRuntime(915): at android.widget.ArrayAdapter.createViewFromResource(ArrayAdapter.java:379)
03-21 13:15:40.495: E/AndroidRuntime(915): ... 43 more
stacktrace bitte...
Meine Vermutung ist, dass Sie ersetzen sollte, ListView LV = (ListView).getActivity().findViewById(R. id.mainList); ListView LV = (ListView) v. findViewById(R. id.mainList); Vorausgesetzt, Ihr Haupt-layout enthält die Liste aber ohne die xml-Dateien und ohne stacktrace ist es schwer irgendwelche Ratschläge geben
Hinzugefügt main.xml und mein logcat.
und (ListView) V. findViewById(R. id.mainList); noch immer stürzte es
Meine Vermutung ist, dass Sie ersetzen sollte, ListView LV = (ListView).getActivity().findViewById(R. id.mainList); ListView LV = (ListView) v. findViewById(R. id.mainList); Vorausgesetzt, Ihr Haupt-layout enthält die Liste aber ohne die xml-Dateien und ohne stacktrace ist es schwer irgendwelche Ratschläge geben
Hinzugefügt main.xml und mein logcat.
und (ListView) V. findViewById(R. id.mainList); noch immer stürzte es
InformationsquelleAutor user2175493 | 2013-03-21
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Den stacktrace sagt Ihnen, was falsch mit Ihrem code:
java.lang.IllegalStateException: ArrayAdapter erfordert die Ressource-ID, um eine TextView
Sind Sie mit
ist dieser Konstruktor:
Sowie die Dokumentation sagt für textViewResourceId: Die Ressource-ID für eine layout-Datei enthält eine TextView zu verwenden, bei der Instanziierung von Ansichten (siehe http://developer.android.com/reference/android/widget/ArrayAdapter.html#ArrayAdapter(android.content.Context, int))
Weil das layout, das Sie verwenden, ist ein komplexeres layout (TwoLineListItem) Sie haben zu sagen, der adapter der TextView zu verwenden:
Oder Sie können einfach verwenden Sie das einfache layout von android.R.layout.simple_list_item_1 statt.
Mithilfe der zwei-Linien-layout keinen Sinn in deinem Fall, wie auch immer wie Sie scheinen, haben nur einen einzigen text pro Zeile.
Ich bin mit benutzerdefinierten adapter. was kann ich jetzt tun, um es anzuzeigen.
InformationsquelleAutor Emanuel Moecklin