我为android开发的新功能我的要求是我有两个片段即a和b frag a是父片段，frag b是孩子我怀疑是当我从b传递数据到它应该在frag ai中动态填充listview使用notifydatasetchange，但它不能正常工作我的代码是
frag b（from_frag）：
package first.service.precision.servicefirst;
/**
* Created by 4264 on 23-11-2015.
*/
import android.app.Fragment;
import android.app.FragmentManager;
import android.app.FragmentTransaction;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Spinner;
public class NewRequirements extends Fragment {
Add add;
customListAdapterldrequirements customListAdapterldrequirements;
//public static NewRequirements newInstance(Bundle bundle) {
// Add myFragment = new Add();
// myFragment.setArguments(bundle);
//}
// }
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// TODO Auto-generated method stub
View view = inflater.inflate(R.layout.fragment_dialog_claim, container,
false);
final Button btnupdate;
btnupdate = (Button) view.findViewById(R.id.update);
final Spinner sbu = (Spinner) view.findViewById(R.id.sbuu);
final EditText requiremtns=(EditText)view.findViewById(R.id.txtEmployeeCode);
final ArrayAdapter<CharSequence> adaptersbu = ArrayAdapter.createFromResource(
getActivity().getBaseContext(), R.array.newrequirements, R.layout.spinnerlayout);
adaptersbu.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
sbu.setAdapter(adaptersbu);
final Spinner bu = (Spinner) view.findViewById(R.id.bu);
final ArrayAdapter<CharSequence> adapterbu = ArrayAdapter.createFromResource(getActivity().getBaseContext(), R.array.newrequirements, R.layout.spinnerlayout);
adapterbu.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
bu.setAdapter(adapterbu);
final Spinner sbuu = (Spinner) view.findViewById(R.id.sbu);
final ArrayAdapter<CharSequence> adaptersbuu = ArrayAdapter.createFromResource(getActivity().getBaseContext(), R.array.newrequirements, R.layout.spinnerlayout);
adaptersbuu.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
sbuu.setAdapter(adaptersbuu);
final Spinner sc = (Spinner) view.findViewById(R.id.sc);
ArrayAdapter<CharSequence> adaptersc = ArrayAdapter.createFromResource(getActivity().getBaseContext(), R.array.newrequirements, R.layout.spinnerlayout);
adaptersc.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
sc.setAdapter(adaptersc);
final Spinner ssc = (Spinner) view.findViewById(R.id.ssc);
ArrayAdapter<CharSequence> adapterssc = ArrayAdapter.createFromResource
(getActivity().getBaseContext(), R.array.newrequirements, R.layout.spinnerlayout);
adapterssc.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
ssc.setAdapter(adapterssc);
setHasOptionsMenu(true);
btnupdate.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
String str = sbu.getSelectedItem().toString();
String business_unit= bu.getSelectedItem().toString();
String sub_business_unit=sbuu.getSelectedItem().toString();
String service=sc.getSelectedItem().toString();
String servicec=ssc.getSelectedItem().toString();
String req=requiremtns.getText().toString();
FragmentManager fm = getFragmentManager();
Add add = new Add();
// bundle.putString("yes", str);
// Log.i("Bundle", bundle.toString());
// Log.v("Add", str);
// add.setArguments(bundle);
Main2Activity.sbu=str;
Main2Activity.bu=business_unit;
Main2Activity.sbuu=sub_business_unit;
Main2Activity.sc=service;
Main2Activity.ssc=servicec;
Main2Activity.req=req;
FragmentTransaction ft = fm.beginTransaction();
ft.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_FADE);
ft.replace(R.id.content_frame, add, "hi");
//add.lv.setVisibility(View.VISIBLE);
ft.addToBackStack(null);
ft.commit();
//Add add1=(Add)getFragmentManager().findFragmentByTag(Add.TAG);
Add add1=new Add();
// add1.updateListView();
//customListAdapterldrequirements.notifyDataSetChanged();
}
});
return view;
}
/* @Override
public void onDestroy() {
Add add = new Add();
// TODO Auto-generated method stub
super.onDestroyView();
Leads leads=new Leads();
FragmentManager back=getFragmentManager();
FragmentTransaction ft=back.beginTransaction();
ft.replace(R.id.content_frame,leads);
back.popBackStack();
}*/
}
Fragagment a（to_frag）：
package first.service.precision.servicefirst;
/**
* Created by 4264 on 23-11-2015.
*/
import android.app.Fragment;
import android.app.FragmentManager;
import android.app.FragmentTransaction;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ListView;
import android.widget.Spinner;
import android.widget.TextView;
import java.util.ArrayList;
/**
* Created by 4264 on 16-10-2015.
*/
public class Add extends Fragment implements View.OnClickListener {
public static ListView lv;
static String sbu, sbuu, sc, ssc, req;
static String bu;
public static String TAG="Add";
customListAdapterldrequirements customListAdapterldrequirements;
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
try {
View rootView = inflater.inflate(R.layout.activity_btn_add, container, false);
Spinner ldsource = (Spinner) rootView.findViewById(R.id.lead_source);
ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(
getActivity().getBaseContext(), R.array.dropbox1, R.layout.spinnerlayout);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
ldsource.setAdapter(adapter);
// EditText editText=(EditText)rootView.findViewById(R.id.title);
Spinner ldtype = (Spinner) rootView.findViewById(R.id.ldtype);
ArrayAdapter<CharSequence> adapter1 = ArrayAdapter.createFromResource(
getActivity().getBaseContext(), R.array.dropbox2, R.layout.spinnerlayout);
adapter1.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
ldtype.setAdapter(adapter1);
Spinner ldstatus = (Spinner) rootView.findViewById(R.id.ldstatus);
TextView txt = (TextView) rootView.findViewById(R.id.spinnerTarget);
ArrayAdapter<CharSequence> adapter2 = ArrayAdapter.createFromResource(
getActivity().getBaseContext(), R.array.dropbox3, R.layout.spinnerlayout);
adapter2.setDropDownViewResource(android.R.layout.simple_selectable_list_item);
ldstatus.setAdapter(adapter2);
// Bundle bundle=getArguments();
// String good=bundle.getString("sbu");
//getFragmentManager().popBackStack();
Bundle bundle = getArguments();
ListView lv = (ListView)rootView.findViewById(R.id.ldrequirements);
// sbu = getArguments().getString("yes");
// public boolean onTouch(View v, MotionEvent event) {
// return false;
// }
// Setting on Touch Listener for handling the touch inside ScrollView
//});
try {
// customListAdapterldrequirements customListAdapterldrequirements=new customListAdapterldrequirements(getActivity(),listContact);
/* lv.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position,
long id) {
NewRequirements newRequirements = new NewRequirements();
FragmentManager fm = getFragmentManager();
FragmentTransaction ft = fm.beginTransaction();
ft.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_FADE);
// lv.deferNotifyDataSetChanged();
ft.replace(R.id.content_frame, newRequirements);
ft.commit();
}
})*/
/* lv.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
return false;
}
// Setting on Touch Listener for handling the touch inside ScrollView
// @Override
// public boolean onTouch(View v, MotionEvent event) {
// Disallow the touch request for parent scroll on touch of child view
// v.getParent().requestDisallowInterceptTouchEvent(true);
//
// return false;
// }
});*/
// updateListView();
ArrayList<LdNewsItem> listContact = GetlistContact();
customListAdapterldrequirements customListAdapterldrequirements = new customListAdapterldrequirements(getActivity(), 0,listContact);
customListAdapterldrequirements.notifyDataSetChanged();
lv.setAdapter(customListAdapterldrequirements);
customListAdapterldrequirements.notifyDataSetChanged();
return rootView;
} catch (Exception e) {
throw e;
}
}catch (Exception e){
throw e;}
}
public void updateListView() {
}
private ArrayList<LdNewsItem> GetlistContact() {
ArrayList<LdNewsItem> contactlist = new ArrayList<LdNewsItem>();
// String str=getArguments().getString("yes");
sbu = Main2Activity.sbu;
bu = Main2Activity.bu;
sbuu = Main2Activity.sbuu;
sc = Main2Activity.sc;
ssc = Main2Activity.ssc;
req = Main2Activity.req;
{
LdNewsItem contact = new LdNewsItem();
contact.setSbu(sbu);
contact.setBu(bu);
contact.setSbuu(sbuu);
contact.setSc(sc);
contact.setSsc(ssc);
contact.setReq(req);
// contact.setReporterName("No matter how big your house is, how recent your car is, or how big your bank account is — our graves will always be the same size. Stay humble." + i);
contactlist.add(contact);
// contact.setReporterName(" LdNewsItem contact1 = new LdNewsItem();
}
return contactlist;
}
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
Fragment fragment = null;
setHasOptionsMenu(true);
Button btnrequirements = (Button) getActivity().findViewById(R.id.btnrequirements);
btnrequirements.setOnClickListener(this);
Button btnactnt = (Button) getActivity().findViewById(R.id.btnacnt);
btnactnt.setOnClickListener(this);
Button btnprimary = (Button) getActivity().findViewById(R.id.btnprimary);
btnprimary.setOnClickListener(this);
Button btnsecondary = (Button) getActivity().findViewById(R.id.btnsecondary);
btnsecondary.setOnClickListener(this);
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.btnrequirements:
Fragment newFragment = new NewRequirements();
// consider using Java coding conventions (upper first char class names!!!)
FragmentTransaction transaction = getFragmentManager().beginTransaction();
// Replace whatever is in the fragment_container view with this fragment,
// and add the transaction to the back stack
transaction.replace(R.id.content_frame, newFragment);
transaction.addToBackStack(null);
// Commit the transaction
transaction.commit();
break;
case R.id.btnacnt:
FragmentManager fm = getFragmentManager();
//FragmentTransaction ft=fm.beginTransaction();
SelectAccountDialog selectAccountDialog = new SelectAccountDialog();
selectAccountDialog.setRetainInstance(true);
selectAccountDialog.show(fm, "fragment_name");
//ft.addToBackStack(null);
break;
case R.id.btnprimary:
FragmentManager fmm = getFragmentManager();
// FragmentTransaction ftt=fmm.beginTransaction();
SelectAccountDialog selectAccountDialog1 = new SelectAccountDialog();
selectAccountDialog1.setRetainInstance(true);
selectAccountDialog1.show(fmm, "fragment_name");
// ftt.addToBackStack(null);
break;
case R.id.btnsecondary:
FragmentManager fm2 = getFragmentManager();
// FragmentTransaction fttt=fm2.beginTransaction();
SelectAccountDialog selectAccountDialog2 = new SelectAccountDialog();
selectAccountDialog2.setRetainInstance(true);
selectAccountDialog2.show(fm2, "fragment_name");
// fttt.addToBackStack(null);
break;
}
}
/*@Override
public void onDestroy() {
Add add = new Add();
// TODO Auto-generated method stub
super.onDestroyView();
FragmentManager back=getFragmentManager();
FragmentTransaction ft=back.beginTransaction();
// ft.replace(R.id.content_frame, leads);
back.popBackStack(null, FragmentManager.POP_BACK_STACK_INCLUSIVE);
}*/
}
我的惯例如下：
package first.service.precision.servicefirst;
/**
* Created by 4264 on 23-11-2015.
*/
import android.content.Context;
import android.graphics.Color;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.TextView;
import java.util.List;
/**
* Created by 4264 on 12-11-2015.
*/
public class customListAdapterldrequirements extends ArrayAdapter<LdNewsItem>{
Context context;
List<LdNewsItem>objects;
int layoutResourceId;
private LayoutInflater layoutInflater;
public customListAdapterldrequirements(Context context,int layoutresourceid, List<LdNewsItem> listData) {
super(context,0,listData);
this.context=context;
this.layoutResourceId=layoutresourceid;
objects = listData;
layoutInflater = LayoutInflater.from(context);
}
@Override
public int getCount() {
return objects.size();
}
public void setObjectValue(List<LdNewsItem> info){
objects=info;
}
@Override
public long getItemId(int position) {
return position;
}
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder;
LdNewsItem ldnews= objects.get(position);
View mview = convertView;
// convertView.setBackgroundColor(Color.parseColor("#E5E5E5"));
LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
if (convertView == null) {
convertView = inflater.inflate(R.layout.list_ld_requirements, null);
TextView req = (TextView) convertView.findViewById(R.id.txt);
req.setText("Select Lead Information");
holder = new ViewHolder();
holder.headlineView = (TextView) convertView.findViewById(R.id.sbu);
holder.reporterNameView = (TextView) convertView.findViewById(R.id.bu);
holder.reportedDateView = (TextView) convertView.findViewById(R.id.sbuu);
holder.ldstatusView = (TextView) convertView.findViewById(R.id.sc);
holder.ldtype = (TextView) convertView.findViewById(R.id.ssc);
holder.ldsource = (TextView) convertView.findViewById(R.id.rq);
// add.lv.setVisibility(View.INVISIBLE);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
// add.lv.setVisibility(View.VISIBLE);
holder.headlineView.setText("Strategic Business Unit: " + ldnews.getSbu());
holder.reportedDateView.setText("Business Unit: " + ldnews.getSbuu());
holder.ldstatusView.setText("Sub Business Unit: " + ldnews.getSc());
holder.ldtype.setText("Service Category: " + ldnews.getSsc());
holder.ldsource.setText("Service Sub Category: " + ldnews.getReq());
convertView.setBackgroundColor(Color.parseColor("#E5E5E5"));
// holder.headlineView.setText("Requirements: " +listData.get(position).getReq());
return convertView;
}
static class ViewHolder {
public TextView headlineView;
public TextView reporterNameView;
public TextView reportedDateView;
public TextView ldstatusView;
public TextView ldtype;
public TextView ldsource;
public TextView req;
}
}
当我尝试添加新的数据列表时，覆盖不动态添加donno在哪里做错了。我希望你们在这里提前帮助谢谢！