我怀疑我有两个片段，即frag a和相同活动的frag b需要将数据从b传递给a。来自b的数据需要动态填充listview我试过notifydatasetchange（）但是到目前为止它还没有用到我试过的是
片段b：
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);
Add add=(Add)getFragmentManager().findFragmentByTag("leads");
add.updateListView();
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();
}
});
return view;
}
}
片段a：
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.AdapterView;
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
{
private ListView lv;
static String sbu,sbuu,sc,ssc,req;
static String bu;
static boolean single;
Add add;
customListAdapterldrequirements cus;
private ArrayList<LdNewsItem>ldnews;
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");
Bundle bundle=getArguments();
// sbu = getArguments().getString("yes");
// public boolean onTouch(View v, MotionEvent event) {
// return false;
// }
// Setting on Touch Listener for handling the touch inside ScrollView
//});
lv = (ListView) rootView.findViewById(R.id.ldrequirements);
//customListAdapterldrequirements customListAdapterldrequirements=new customListAdapterldrequirements(getActivity(),listContact);
ArrayList<LdNewsItem> listContact = GetlistContact();
lv.setAdapter(new customListAdapterldrequirements(getActivity(), listContact));
customListAdapterldrequirements customListAdapterldrequirements=new customListAdapterldrequirements(getActivity(),listContact);
// cus=new customListAdapterldrequirements(this,ldnews);
lv.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position,
long id) {
if (single) {
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, "hi");
ft.addToBackStack(null);
ft.commit();
} else {
lv.getItemIdAtPosition(position);
}
}
});
/* 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;
// }
});*/
return rootView;
}catch (Exception e){
throw e;
}
}
private ArrayList<LdNewsItem> GetlistContact()
{
ArrayList<LdNewsItem> contactlist = new ArrayList<LdNewsItem>();
// String str=getArguments().getString("yes");
// String str="test";
// NewRequirements newr=new NewRequirements();
// String yog=getArguments().getString("sbu");
// sbu.notify();
sbu=Main2Activity.sbu;
bu=Main2Activity.bu;
sbuu=Main2Activity.sbuu;
sc=Main2Activity.sc;
ssc=Main2Activity.ssc;
req=Main2Activity.req;
for(int i=1;i<=5;i++) {
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);
//lv.setAdapter((ListAdapter) contactlist);
}
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;
}
}
public void updateListView() {
cus.notifyDataSetChanged();
}
}
这是我的customlistadapter：
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.BaseAdapter;
import android.widget.TextView;
import java.util.ArrayList;
/**
* Created by 4264 on 12-11-2015.
*/
public class customListAdapterldrequirements extends BaseAdapter{
Add add;
private ArrayList<LdNewsItem> listData;
private LayoutInflater layoutInflater;
public customListAdapterldrequirements(Context context, ArrayList<LdNewsItem> listData) {
this.listData = listData;
layoutInflater = LayoutInflater.from(context);
}
@Override
public int getCount() {
return listData.size();
}
@Override
public Object getItem(int position) {
return listData.get(position);
}
@Override
public long getItemId(int position) {
return position;
}
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder;
View mview = convertView;
// convertView.setBackgroundColor(Color.parseColor("#E5E5E5"));
if (convertView == null) {
convertView = layoutInflater.inflate(R.layout.list_ld_requirements, null);
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: " + listData.get(position).getSbu());
holder.reportedDateView.setText("Business Unit: " + listData.get(position).getSbuu());
holder.ldstatusView.setText("Sub Business Unit: " + listData.get(position).getSc());
holder.ldtype.setText("Service Category: " + listData.get(position).getSsc());
holder.ldsource.setText("Service Sub Category: " + listData.get(position).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;
}
}
我的主要活动：
package first.service.precision.servicefirst;
import android.annotation.SuppressLint;
import android.app.ActionBar;
import android.app.Activity;
import android.app.Fragment;
import android.app.FragmentManager;
import android.app.FragmentTransaction;
import android.graphics.Color;
import android.graphics.drawable.ColorDrawable;
import android.os.Bundle;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBarDrawerToggle;
import android.util.Log;
import android.view.Gravity;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ListView;
public class Main2Activity extends Activity {
public static String sbu,bu,sbuu,sc,ssc,req;
// Within which the entire activity is enclosed
private DrawerLayout mDrawerLayout;
// ListView represents Navigation Drawer
private ListView mDrawerList;
Button butonlead;
// ActionBarDrawerToggle indicates the presence of Navigation Drawer in the action bar
private ActionBarDrawerToggle mDrawerToggle;
// Title of the action bar
private String mTitle = "";
@SuppressLint("NewApi")
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main2);
final ActionBar ab = getActionBar();
ab.show();
// Getting reference to the DrawerLayout
mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
ab.setTitle(mTitle);
mDrawerList = (ListView) findViewById(R.id.drawer_list);
// Getting reference to the ActionBarDrawerToggle
mDrawerToggle = new ActionBarDrawerToggle(this, mDrawerLayout,
R.string.open_drawer,
R.string.close_drawer) {
/** Called when drawer is closed */
public void onDrawerClosed(View view) {
invalidateOptionsMenu();
}
/** Called when a drawer is opened */
public void onDrawerOpened(View drawerView) {
invalidateOptionsMenu();
}
};
// Setting DrawerToggle on DrawerLayout
mDrawerLayout.setDrawerListener(mDrawerToggle);
// Creating an ArrayAdapter to add items to the listview mDrawerList
ArrayAdapter<String> adapter = new ArrayAdapter<String>(getApplication(),
R.layout.drawer_list_item, R.id.title, getResources().getStringArray(R.array.option));
// Setting the adapter on mDrawerList
mDrawerList.setAdapter(adapter);
// Enabling Home button
ab.setHomeButtonEnabled(true);
ab.setBackgroundDrawable(new ColorDrawable(Color.parseColor("#53A93F")));
// Enabling Up navigation
ab.show();
ab.setDisplayHomeAsUpEnabled(true);
// Setting item click listener for the listview mDrawerList
mDrawerList.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
// Getting an array of options
String[] menuItems = getResources().getStringArray(R.array.option);
// Currently selected option
mTitle = menuItems[position];
Fragment fragment = null;
switch (position) {
case 0:
fragment = new Leads();
break;
case 1:
fragment = new Opportunities();
break;
case 2:
fragment = new Accounts();
break;
case 3:
fragment = new Contactss();
break;
case 4:
fragment = new Documents();
break;
case 5:
fragment = new Reports();
default:
break;
}
if (fragment != null) {
// Getting reference to the FragmentManager
FragmentManager fragmentManager = getFragmentManager();
fragmentManager.beginTransaction().replace(R.id.content_frame, fragment).addToBackStack("fragback").commit();
// Creating a fragment transaction
FragmentTransaction ft = fragmentManager.beginTransaction();
// Adding a fragment to the fragment transaction
ft.replace(R.id.content_frame, fragment);
// Committing the transaction
ft.commit();
// Closing the drawer
mDrawerLayout.closeDrawer(mDrawerList);
} else {
// error in creating fragment
Log.e("MainActivity", "Error in creating fragment");
}
}
});
}
@Override
public void onBackPressed() {
if (mDrawerLayout.isDrawerOpen(Gravity.LEFT)) {
mDrawerLayout.closeDrawer(mDrawerList);
} else {
super.onBackPressed();
}
}
@Override
protected void onPostCreate(Bundle savedInstanceState) {
super.onPostCreate(savedInstanceState);
mDrawerToggle.syncState();
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
if (mDrawerToggle.onOptionsItemSelected(item)) {
return true;
}
return super.onOptionsItemSelected(item);
}
/**
* Called whenever we call invalidateOptionsMenu()
*/
@Override
public boolean onPrepareOptionsMenu(Menu menu) {
// If the drawer is open, hide action items related to the content view
boolean drawerOpen = mDrawerLayout.isDrawerOpen(mDrawerList);
return super.onPrepareOptionsMenu(menu);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.main2, menu);
return super.onCreateOptionsMenu(menu);
}
/* @Override
public void DataTransfer(String e) {
}*/
//
// @Override
// public void DataTransfer(ArrayList<String> e) {
// Add obj=(Add)getFragmentManager().findFragmentById(R.id.frag_1);
// obj.GetlistContact(e);
// }
}
/* @Override
public void selectedvalue(String s) {
Add add=new Add();
FragmentManager fm=getFragmentManager();
FragmentTransaction ft=fm.beginTransaction();
ft.replace(R.id.content_frame,add);
ft.commit();}
}
*/
我希望你们在这里帮助我们像我们这样的初学者提前感谢！
答案 0 :(得分：0)
您好，您可以使用fragB中的片段TAGS从frag b更新您的frag a，您可以这样调用，
document.createElement("html")现在如何声明标签....
您可以在片段附加到MainActivity
中的容器时指定标记名
public static string PostRequesttoYammer(string postBody, string url,string authHeader = null, string contentType = null)
{
string results = string.Empty;
try
{
HTTPWebReq = WebRequest.CreateHttp(url);
HTTPWebReq.Method = "POST";
if (!string.IsNullOrEmpty(authHeader))
HTTPWebReq.Headers.Add("Authorization: Bearer " + authHeader);
byte[] postByte = Encoding.UTF8.GetBytes(postBody);
if (string.IsNullOrEmpty(contentType))
HTTPWebReq.ContentType = "application/x-www-form-urlencoded";
else
HTTPWebReq.ContentType = contentType;
HTTPWebReq.ContentLength = postByte.Length;
Stream postStream = HTTPWebReq.GetRequestStream();
postStream.Write(postByte, 0, postByte.Length);
postStream.Close();
HTTPWebRes = (HttpWebResponse)HTTPWebReq.GetResponse();
postStream = HTTPWebRes.GetResponseStream();
StreamReader postReader = new StreamReader(postStream);
results = postReader.ReadToEnd();
postReader.Close();
postStream.Close();
}
catch (Exception ex)
{
}
return results;
}
：）