I am trying to show a ListFragment. I think I have everything set up correctly but no matter what I try I get a RuntimeException: Unable to start Activity. I have been searching and debugging for a few days now and havent came up with an answer yet. Here is the code I have so far. Any help will be greatly appreciated.
Here is the method that starts the Activity:
private void populateList(ArrayList<String> list) {
Intent intent = new Intent(this, TipListActivity.class);
intent.putStringArrayListExtra(INTENT_KEY, list);
startActivity(intent);
}
Here is the Activity that the previous method starts:
public class TipListActivity extends FragmentActivity {
/*************** FIELDS ***************************/
ArrayList<String> arrayList;
/*************** OVERRIDDEN METHODS ***************/
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.tip_list_fragment_activity);
Intent intent = getIntent();
arrayList = intent.getStringArrayListExtra(TipActivity.INTENT_KEY);
}
}
Here is tip_list_fragment_activity.xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="horizontal" >
<fragment
android:name=".TipListFragment"
android:id="@+id/fragment_activity"
android:layout_weight="1"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</LinearLayout>
Here is TipListFragment:
public class TipListFragment extends ListFragment {
@Override
public void onCreate (Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
ArrayAdapter<String> myListAdapter = new ArrayAdapter<String>(getActivity(),
android.R.layout.simple_list_item_1, new TipListActivity().arrayList);
setListAdapter(myListAdapter);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle
savedInstanceState) {
return inflater.inflate(R.layout.list_fragment, container, false);
}
}
And finally here is list_fragment.xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingLeft="8dp"
android:paddingRight="8dp">
<ListView android:id="@+id/list"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
android:drawSelectorOnTop="false"/>
<TextView android:id="@+id/textv"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:text="@string/app_name"/>
</LinearLayout>
Here is the stack trace:
07-01 00:41:37.932: E/AndroidRuntime(6083): FATAL EXCEPTION: main 07-01 00:41:37.932: E/AndroidRuntime(6083): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.app.tipcalculator/com.app.tipcalculator.TipListActivity}: android.view.InflateException: Binary XML file line #7: Error inflating class fragment
07-01 00:41:37.932: E/AndroidRuntime(6083): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1956)
07-01 00:41:37.932: E/AndroidRuntime(6083): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1981)
07-01 00:41:37.932: E/AndroidRuntime(6083): at android.app.ActivityThread.access$600(ActivityThread.java:123)
07-01 00:41:37.932: E/AndroidRuntime(6083): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1147)
07-01 00:41:37.932: E/AndroidRuntime(6083): at android.os.Handler.dispatchMessage(Handler.java:99)
07-01 00:41:37.932: E/AndroidRuntime(6083): at android.os.Looper.loop(Looper.java:137) 07-01 00:41:37.932: E/AndroidRuntime(6083): at android.app.ActivityThread.main(ActivityThread.java:4424)
07-01 00:41:37.932: E/AndroidRuntime(6083): at java.lang.reflect.Method.invokeNative(Native Method)
07-01 00:41:37.932: E/AndroidRuntime(6083): at java.lang.reflect.Method.invoke(Method.java:511)
07-01 00:41:37.932: E/AndroidRuntime(6083): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
07-01 00:41:37.932: E/AndroidRuntime(6083): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
07-01 00:41:37.932: E/AndroidRuntime(6083): at dalvik.system.NativeStart.main(Native Method)
07-01 00:41:37.932: E/AndroidRuntime(6083): Caused by: android.view.InflateException: Binary XML file line #7: Error inflating class fragment
07-01 00:41:37.932: E/AndroidRuntime(6083): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:697)
07-01 00:41:37.932: E/AndroidRuntime(6083): at android.view.LayoutInflater.rInflate(LayoutInflater.java:739)
07-01 00:41:37.932: E/AndroidRuntime(6083): at android.view.LayoutInflater.inflate(LayoutInflater.java:489)
07-01 00:41:37.932: E/AndroidRuntime(6083): at android.view.LayoutInflater.inflate(LayoutInflater.java:396)
07-01 00:41:37.932: E/AndroidRuntime(6083): at android.view.LayoutInflater.inflate(LayoutInflater.java:352)
07-01 00:41:37.932: E/AndroidRuntime(6083): at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:251)
07-01 00:41:37.932: E/AndroidRuntime(6083): at android.app.Activity.setContentView(Activity.java:1835)
07-01 00:41:37.932: E/AndroidRuntime(6083): at com.app.tipcalculator.TipListActivity.onCreate(TipListActivity.java:28)
07-01 00:41:37.932: E/AndroidRuntime(6083): at android.app.Activity.performCreate(Activity.java:4465)
07-01 00:41:37.932: E/AndroidRuntime(6083): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1049)
07-01 00:41:37.932: E/AndroidRuntime(6083): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1920)
07-01 00:41:37.932: E/AndroidRuntime(6083): ... 11 more 07-01 00:41:37.932: E/AndroidRuntime(6083): Caused by: android.support.v4.app.Fragment$InstantiationException: Unable to instantiate fragment .TipListFragment: make sure class name exists, is public, and has an empty constructor that is public
07-01 00:41:37.932: E/AndroidRuntime(6083): at android.support.v4.app.Fragment.instantiate(Fragment.java:391)
07-01 00:41:37.932: E/AndroidRuntime(6083): at android.support.v4.app.Fragment.instantiate(Fragment.java:359)
07-01 00:41:37.932: E/AndroidRuntime(6083): at android.support.v4.app.FragmentActivity.onCreateView(FragmentActivity.java:262)
07-01 00:41:37.932: E/AndroidRuntime(6083): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:669)
07-01 00:41:37.932: E/AndroidRuntime(6083): ... 21 more 07-01 00:41:37.932: E/AndroidRuntime(6083): Caused by: java.lang.ClassNotFoundException: .TipListFragment
07-01 00:41:37.932: E/AndroidRuntime(6083): at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:61)
07-01 00:41:37.932: E/AndroidRuntime(6083): at java.lang.ClassLoader.loadClass(ClassLoader.java:501)
07-01 00:41:37.932: E/AndroidRuntime(6083): at java.lang.ClassLoader.loadClass(ClassLoader.java:461)
07-01 00:41:37.932: E/AndroidRuntime(6083): at android.support.v4.app.Fragment.instantiate(Fragment.java:381)
07-01 00:41:37.932: E/AndroidRuntime(6083): ... 24 more
You aren't using the correct id for your list. You have android:id="@+id/list"
.
A ListFragment is looking for a very specific id.
android:id="@android:id/list"
Make that change and you should see an improvement in your app behavior.
You might also move your code in the onCreate
of TipListFragment
to onActivityCreated
.