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任何人都可以幫助我嗎？我對Android非常陌生，爲了解析我怎麼會出錯。我的logcat沒有顯示任何內容，所以我不確定問題出在哪裏。由於ParseQuery適配器問題導致應用程序崩潰
下面是崩潰應用程序的類的代碼。它應該顯示所有UpcomingEvents Parse Objects的列表。
public class UpcomingEvent extends ListActivity {
private ParseQueryAdapter<UpcomingEvents> allEventsAdapter;
private ListView listView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
getListView().setClickable(false);
setContentView(R.layout.activity_upcoming_events);
ParseQueryAdapter.QueryFactory<UpcomingEvents> allEvents =
new ParseQueryAdapter.QueryFactory<UpcomingEvents>() {
public ParseQuery<UpcomingEvents> create() {
ParseQuery<UpcomingEvents> query = UpcomingEvents.getQuery();
query.orderByDescending("createdAt");
return query;
}
};
// Set up the query adapter
allEventsAdapter = new ParseQueryAdapter<UpcomingEvents>(this, allEvents) {
@Override
public View getItemView(UpcomingEvents upcomingEvents, View view, ViewGroup parent) {
if (view == null) {
view = View.inflate(getContext(), R.layout.item_view_events, null);
}
TextView nameTV = (TextView) view.findViewById(R.id.item_nameTxt);
nameTV.setText(upcomingEvents.getName());
TextView typeTV = (TextView) view
.findViewById(R.id.item_typeTxt);
typeTV.setText(upcomingEvents.getType());
TextView dateTV = (TextView) view.findViewById(R.id.item_dateTxt);
dateTV.setText(upcomingEvents.getDate());
TextView venueTV = (TextView) view.findViewById(R.id.item_venueTxt);
venueTV.setText(upcomingEvents.getVenue());
TextView creatorTV = (TextView) view.findViewById(R.id.item_creatorTxt);
//creatorTV.setText((CharSequence) upcomingEvents.getUser());
creatorTV.setText(upcomingEvents.getUser().getUsername());
return view;
}
};
allEventsAdapter.setAutoload(false);
allEventsAdapter.setPaginationEnabled(false);
// Attach the query adapter to the view
ListView eventsListView = (ListView) findViewById(R.id.EventListView);
eventsListView.setAdapter(allEventsAdapter);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.menu_event_list, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.action_refresh: {
updateEventList();
break;
}
case R.id.action_new: {
newEvent();
break;
}
}
return super.onOptionsItemSelected(item);
}
private void updateEventList() {
allEventsAdapter.loadObjects();
setListAdapter(allEventsAdapter);
}
private void newEvent() {
Intent i = new Intent(this, AddEvent.class);
startActivityForResult(i, 0);
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
if (resultCode == Activity.RESULT_OK) {
// If a new post has been added, update
// the list of posts
updateEventList();
}
}
}
logcat的輸出：
04-15 09:20:18.653 4309-4309/? E/AndroidRuntime﹕ FATAL EXCEPTION: main
Process: ie.wit.nicola.pasedb, PID: 4309
java.lang.RuntimeException: Unable to start activity ComponentInfo{ie.wit.nicola.pasedb/ie.wit.nicola.pasedb.UpcomingEvent}: java.lang.RuntimeException: Your content must have a ListView whose id attribute is 'android.R.id.list'
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2195)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245)
at android.app.ActivityThread.access$800(ActivityThread.java:135)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5017)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.RuntimeException: Your content must have a ListView whose id attribute is 'android.R.id.list'
at android.app.ListActivity.onContentChanged(ListActivity.java:243)
at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:293)
at android.app.Activity.setContentView(Activity.java:1929)
at ie.wit.nicola.pasedb.UpcomingEvent.onCreate(UpcomingEvent.java:31)
at android.app.Activity.performCreate(Activity.java:5231)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2159)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245)
at android.app.ActivityThread.access$800(ActivityThread.java:135)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5017)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
at dalvik.system.NativeStart.main(Native Method)
activity_upcoming_events.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="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:paddingBottom="@dimen/activity_vertical_margin"
android:background="@drawable/backrepeat">
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="@dimen/inner_margin"
android:paddingRight="@dimen/inner_margin"
android:paddingTop="@dimen/inner_margin"
android:paddingBottom="@dimen/inner_margin"
android:background="#fff6e5">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Upcoming Events"
android:textAppearance="?android:textAppearanceLarge"
android:id="@+id/UpcomingEventtextView"/>
<ListView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/list"
android:layout_below="@+id/UpcomingEventtextView"/>
</RelativeLayout>
</LinearLayout>
請把你的logcat –
編輯顯示logcat – Nic