我正在尝试添加一个按钮，单击该按钮会将新组和一些联系人添加到组中。这将在新片段中打开，将新组添加到列表视图中。到目前为止，我有联系人列表和工作，我现在正试图让Button工作。它现在点击时就崩溃了。我试图使用片段
这是我的MainActivity
public class MainActivity extends AppCompatActivity implements CreateGroup.OnItemClickListener {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Log.d("STARTED", "App started");
}
public void OnItemClicked(String text) {
GroupList gl = (GroupList)getFragmentManager().findFragmentById(R.id.groupList);
//TaskList tl = (TaskList)getFragmentManager().findFragmentById(R.id.taskList);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
CreateGroup
public class CreateGroup extends Fragment {
public interface OnItemClickListener{
void OnItemClicked(String text);
}
public OnItemClickListener listener;
EditText newGroup;
Button createGroup;
Button showContacts;
ListView contactList;
Cursor cursor1;
public CreateGroup() {
// Required empty public constructor
}
@Override
public View onCreateView (LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState){
// Inflate the layout for this fragment
View v = inflater.inflate(R.layout.fragment_create_group, container, false);
newGroup = (EditText) v.findViewById(R.id.groupEditText);
createGroup = (Button) v.findViewById(R.id.createButton);
contactList = (ListView) v.findViewById(R.id.contactListView);
createGroup.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
createdNewGroup(v);
}
});
showContacts = (Button)v.findViewById(R.id.contactButton);
showContacts.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
LoadContactsWithPhone(v);
}
});
return v;
}
public Cursor getContactsWithPhone()
{
Uri uri = ContactsContract.CommonDataKinds.Phone.CONTENT_URI;
String[] projection = new String[] { ContactsContract.Contacts._ID,
ContactsContract.Contacts.DISPLAY_NAME,
ContactsContract.CommonDataKinds.Phone.NUMBER
};
String selection = ContactsContract.Contacts.HAS_PHONE_NUMBER + " = ?";
String[] selectionArgs = new String[]{ String.valueOf(1)};
String sortOrder = ContactsContract.Contacts.DISPLAY_NAME + " COLLATE LOCALIZED ASC";
return getActivity().getContentResolver().query(uri, projection, selection, selectionArgs, sortOrder);
}
public void LoadContactsWithPhone(View v) {
Cursor cursor = getContactsWithPhone();
ShowContacts s = new ShowContacts();
ContactArray[] person = s.showNewContacts(cursor);
ContactListAdapter contactInfo = new ContactListAdapter(getActivity(), R.layout.contact_view_items, person);
contactList.setAdapter(contactInfo);
}
public void createdNewGroup(View v) {
String ne = newGroup.getText().toString();
}
}
和我的GroupList
public interface OnItemClickListener{
public void OnItemClicked(String text);
}
public OnItemClickListener listener;
ListView groupList;
Button groupCreatePage;
EditText newgroup;
private ArrayList<String> arrayList;
private ArrayAdapter<String> adapter;
public GroupList() {
// Required empty public constructor
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View v = inflater.inflate(R.layout.fragment_group_list, container, false);
groupList = (ListView)v.findViewById(R.id.groupListView);
newgroup = (EditText)v.findViewById(R.id.newEditText);
String [] groups = {""};
arrayList = new ArrayList<>(Arrays.asList(groups));
adapter = new ArrayAdapter<String>(getActivity(),R.layout.task_view,arrayList);
groupList.setAdapter(adapter);
groupCreatePage = (Button)v.findViewById(R.id.groupButton);
groupCreatePage.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
display(v);
}
});
return v;
}
public void display(View v){
String group = newgroup.getText().toString();
arrayList.add(group);
adapter.notifyDataSetChanged();
}
退出
Process: amanda.groupsandlists, PID: 697
java.lang.IllegalStateException: ArrayAdapter requires the resource ID to be a TextView
at android.widget.ArrayAdapter.createViewFromResource(ArrayAdapter.java:386)
at android.widget.ArrayAdapter.getView(ArrayAdapter.java:362)
at android.widget.AbsListView.obtainView(AbsListView.java:2823)
at android.widget.ListView.measureHeightOfChildren(ListView.java:1290)
at android.widget.ListView.onMeasure(ListView.java:1202)
at android.view.View.measure(View.java:18669)
at android.widget.RelativeLayout.measureChildHorizontal(RelativeLayout.java:728)
at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:464)
at android.view.View.measure(View.java:18669)
at android.widget.RelativeLayout.measureChildHorizontal(RelativeLayout.java:728)
at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:464)
at android.view.View.measure(View.java:18669)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5832)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:430)
at android.support.v7.internal.widget.ContentFrameLayout.onMeasure(ContentFrameLayout.java:124)
at android.view.View.measure(View.java:18669)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5832)
at android.support.v7.internal.widget.ActionBarOverlayLayout.onMeasure(ActionBarOverlayLayout.java:393)
at android.view.View.measure(View.java:18669)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5832)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:430)
at android.view.View.measure(View.java:18669)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5832)
at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1435)
at android.widget.LinearLayout.measureVertical(LinearLayout.java:721)
at android.widget.LinearLayout.onMeasure(LinearLayout.java:612)
at android.view.View.measure(View.java:18669)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5832)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:430)
at com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:3012)
at android.view.View.measure(View.java:18669)
at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:2298)
at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1345)
at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1588)
at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1230)
at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6730)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:777)
at android.view.Choreographer.doCallbacks(Choreographer.java:590)
at android.view.Choreographer.doFrame(Choreographer.java:560)
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:763)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:145)
at android.app.ActivityThread.main(ActivityThread.java:6117)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1399)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1194)
Caused by: java.lang.ClassCastException: android.widget.LinearLayout cannot be cast to android.widget.TextView
at android.widget.ArrayAdapter.createViewFromResource(ArrayAdapter.java:379)
at android.widget.ArrayAdapter.getView(ArrayAdapter.java:362)
at android.widget.AbsListView.obtainView(AbsListView.java:2823)
at android.widget.ListView.measureHeightOfChildren(ListView.java:1290)
at android.widget.ListView.onMeasure(ListView.java:1202)
at android.view.View.measure(View.java:18669)
at android.widget.RelativeLayout.measureChildHorizontal(RelativeLayout.java:728)
at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:464)
at android.view.View.measure(View.java:18669)
at android.widget.RelativeLayout.measureChildHorizontal(RelativeLayout.java:728)
at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:464)
at android.view.View.measure(View.java:18669)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5832)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:430)
at android.support.v7.internal.widget.ContentFrameLayout.onMeasure(ContentFrameLayout.java:124)
at android.view.View.measure(View.java:18669)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5832)
at android.support.v7.internal.widget.ActionBarOverlayLayout.onMeasure(ActionBarOverlayLayout.java:393)
at android.view.View.measure(View.java:18669)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5832)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:430)
at android.view.View.measure(View.java:18669)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5832)
at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1435)
at android.widget.LinearLayout.measureVertical(LinearLayout.java:721)
at android.widget.LinearLayout.onMeasure(LinearLayout.java:612)
at android.view.View.measure(View.java:18669)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5832)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:430)
at com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:3012)
at android.view.View.measure(View.java:18669)
at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:2298)
at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1345)
at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1588)
at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1230)
at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6730)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:777)
at android.view.Choreographer.doCallbacks(Choreographer.java:590)
at android.view.Choreographer.doFrame(Choreographer.java:560)
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:763)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:145)
at android.app.ActivityThread.main(ActivityThread.java:6117)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1399)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1194)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1399)
at com.android.internal.os.ZygoteInit.main（ZygoteInit.java:1194）