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Я получаю исключение NullPointer в следующей строке, как будто TextView я имею в виду не может быть найдено:Невозможно найти TextView при заполнении ListView с ArrayAdapter
descriptor.setText("Single");
Я проверил поле ID и это точно то же самое в коде и в XML, я не уверен, что у меня есть ошибка где-то еще в адаптере.
LogCat
06-02 23:24:08.903 11160-11160/com.example.albert.betterapp E/AndroidRuntime﹕ FATAL EXCEPTION: main
Process: com.example.albert.betterapp, PID: 11160
java.lang.NullPointerException
at com.example.albert.betterapp.DisplayAllBets$MyListAdapter.getView(DisplayAllBets.java:464)
at android.widget.AbsListView.obtainView(AbsListView.java:2733)
at android.widget.ListView.measureHeightOfChildren(ListView.java:1274)
at android.widget.ListView.onMeasure(ListView.java:1186)
at android.view.View.measure(View.java:17396)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5365)
at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1410)
at android.widget.LinearLayout.measureVertical(LinearLayout.java:695)
at android.widget.LinearLayout.onMeasure(LinearLayout.java:588)
at android.view.View.measure(View.java:17396)
at android.widget.RelativeLayout.measureChildHorizontal(RelativeLayout.java:719)
at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:455)
at android.view.View.measure(View.java:17396)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5365)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
at android.support.v7.internal.widget.ContentFrameLayout.onMeasure(ContentFrameLayout.java:124)
at android.view.View.measure(View.java:17396)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5365)
at android.support.v7.internal.widget.ActionBarOverlayLayout.onMeasure(ActionBarOverlayLayout.java:444)
at android.view.View.measure(View.java:17396)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5365)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
at android.view.View.measure(View.java:17396)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5365)
at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1410)
at android.widget.LinearLayout.measureVertical(LinearLayout.java:695)
at android.widget.LinearLayout.onMeasure(LinearLayout.java:588)
at android.view.View.measure(View.java:17396)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5365)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
at com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2505)
at android.view.View.measure(View.java:17396)
at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:2175)
at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1316)
at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1513)
at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1200)
at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6401)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:803)
at android.view.Choreographer.doCallbacks(Choreographer.java:603)
at android.view.Choreographer.doFrame(Choreographer.java:573)
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:789)
at android.os.Handler.handleCallback(Handler.java:733)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:157)
at android.app.ActivityThread.main(ActivityThread.java:5335)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1265)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1081)
at dalvik.system.NativeStart.main(Native Method)АДАПТОР
private class MyListAdapter extends ArrayAdapter<BetDisplayer> {
public MyListAdapter() {
super(DisplayAllBets.this,R.layout.activity_singletotalbet,listwriter);
}
@Override
public View getView(int position,View convertView, ViewGroup parent) {
View itemView = convertView;
if (itemView == null) {
itemView = getLayoutInflater().inflate(R.layout.activity_singletotalbet,parent,false);
}
BetDisplayer currentwriter = listwriter.get(position);
Log.d("TESTING", currentwriter.getSelections());
Log.d("TESTING2", currentwriter.getSelections());
String selections = currentwriter.getSelections();
int numberofselections = 0;
for(int i=0; i<selections.length(); i++) {
if(selections.charAt(i) == '/') {
numberofselections++;
}
}
if (numberofselections == 1) {
TextView descriptor = (TextView) findViewById(R.id.no);
descriptor.setText("Single");
} else if (numberofselections == 2) {
TextView descriptor = (TextView) findViewById(R.id.no);
descriptor.setText("Double");
} else if (numberofselections == 3) {
TextView descriptor = (TextView) findViewById(R.id.no);
descriptor.setText("Treble");
} else {
TextView descriptor = (TextView) findViewById(R.id.no);
descriptor.setText("Accumulator" + "(" + numberofselections + ")");
}
TextView status = (TextView) itemView.findViewById(R.id.status);
status.setText(currentwriter.getStatus());
return itemView;
}
}
private void PopulateList() {
ArrayAdapter<BetDisplayer> adapter = new MyListAdapter();
final ListView list = (ListView) findViewById(R.id.betslistviews);
list.setAdapter(adapter);
}
}
Спасибо, должен был заметить, что, я принимаю ваш ответ, как только это позволяет мне в 9 минут :) – Alk
Также вы можете определить 'TextView дескриптор = (TextView) itemView.findViewById (R.id.no);' перед 'if-else', как он будет использовать любой способ. Таким образом, это уменьшит ваши повторяющиеся строки кода. – user370305