Develop Reference

onClickListener on a button that is added through a layout inflator

Here is my code so far based on various answers to related questions on SO.
In my Activity
GridView gv = (GridView) findViewById(R.id.gridView1);
MyCustomAdapter mAdapter = new MyCustomAdapter();
mAdapter.addItem("Action1");
mAdapter.addItem("Action2");
mAdapter.addItem("Action3");
gv.setAdapter(mAdapter);
My Adapter
private class MyCustomAdapter extends BaseAdapter {
private ArrayList<String> mData = new ArrayList<String>();
private LayoutInflater mInflater;
public MyCustomAdapter() {
mInflater = (LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
public void addItem(final String item) {
mData.add(item);
notifyDataSetChanged();
}
#Override
public int getCount() {
return mData.size();
}
#Override
public String getItem(int position) {
return mData.get(position);
}
#Override
public long getItemId(int position) {
return position;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
NumericViewHolder holder = new NumericViewHolder();
if (convertView == null) {
convertView = mInflater.inflate(R.layout.horizontalnumberpicker, null);
holder.textView = (TextView)convertView.findViewById(R.id.txtNPTitle);
holder.minus = (Button)convertView.findViewById(R.id.btnMinus);
holder.plus = (Button)convertView.findViewById(R.id.btnPlus);
holder.value = (TextView)convertView.findViewById(R.id.txtNPValue);
holder.minus.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
TextView tv = (TextView) v.findViewById(R.id.txtNPValue);
int value = Integer.parseInt(tv.getText().toString());
Toast.makeText(getApplicationContext(), Integer.toString(value), Toast.LENGTH_SHORT).show();
if (value > 0) {
value = value - 1;
tv.setText(Integer.toString(value));
}
}
});
holder.plus.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
TextView tv = (TextView) v.findViewById(R.id.txtNPValue);
int value = Integer.parseInt(tv.getText().toString()); <--Error is here
Toast.makeText(getApplicationContext(), Integer.toString(value), Toast.LENGTH_SHORT).show();
value = value + 1;
tv.setText(Integer.toString(value));
}
});
convertView.setTag(holder);
} else {
holder = (NumericViewHolder)convertView.getTag();
}
holder.textView.setText(mData.get(position));
return convertView;
}
}
XML - Main_Activity
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/rlAddProduct"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<Button
android:id="#+id/btnSaveProduct"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentEnd="true"
android:layout_alignParentRight="true"
android:layout_alignParentTop="true"
android:layout_marginEnd="20dp"
android:layout_marginRight="20dp"
android:layout_marginTop="20dp"
android:text="#string/Save" />
<TextView
android:id="#+id/lblSelectCategory"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="#+id/btnSaveProduct"
android:layout_alignBottom="#+id/btnSaveProduct"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_marginLeft="20dp"
android:layout_marginStart="20dp"
android:text="#string/selectCategory" />
<Spinner
android:id="#+id/spCategory"
android:layout_width="250dp"
android:layout_height="40dp"
android:layout_alignBottom="#+id/lblSelectCategory"
android:layout_marginLeft="33dp"
android:layout_marginStart="33dp"
android:layout_toEndOf="#+id/lblSelectCategory"
android:layout_toRightOf="#+id/lblSelectCategory" />
<GridView
android:id="#+id/gridView1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignLeft="#+id/lblSelectCategory"
android:layout_below="#+id/btnSaveProduct"
android:layout_marginTop="14dp"
android:numColumns="auto_fit" >
</GridView>
</RelativeLayout>
XML - Horizontalnumberpicker
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/RelativeLayout1"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<TextView
android:id="#+id/txtNPTitle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:text="EnterTextHere"
android:layout_marginTop="5dp" />
<Button
android:id="#+id/btnPlus"
android:layout_width="50dp"
android:layout_height="50dp"
android:layout_alignBaseline="#+id/txtNPValue"
android:layout_alignBottom="#+id/txtNPValue"
android:layout_toRightOf="#+id/txtNPValue"
android:text="+" />
<TextView
android:id="#+id/txtNPValue"
android:layout_width="50dp"
android:layout_height="50dp"
android:layout_alignTop="#+id/btnMinus"
android:layout_toRightOf="#+id/btnMinus"
android:gravity="center"
android:text="0"
android:textAppearance="#style/AppBaseTheme"
android:textSize="20dp" />
<Button
android:id="#+id/btnMinus"
android:layout_width="50dp"
android:layout_height="50dp"
android:layout_alignParentLeft="true"
android:layout_below="#+id/txtNPTitle"
android:layout_marginTop="2dp"
android:text="-" />
</RelativeLayout>
The requirement is that when I press the plus button, I need to increment the value in the corresponding txtNPValue. Similarly with the minus button, I need to decrement the value in the txtNPValue.
The error is
01-31 22:40:10.854: E/AndroidRuntime(32198): java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.CharSequence android.widget.TextView.getText()' on a null object reference
Also I do not know if this is the right way to program such a requirement and would like some pointers.

TextView tv = (TextView) v.findViewById(R.id.txtNPValue);
this will return null pointer exception, as the view that u r getting is of the button or the clicked item..
Use this :-
RelativeLayout rlLayout = (RelativeLayout) v.getParent();
TextView tv = (TextView) rlLayout.findViewById(R.id.txtNPValue);

please remove:
TextView tv = (TextView) v.findViewById(R.id.txtNPValue);
from onClick to resolve nullpointerException

List View doesn't appear

I try to show a Listview to show my data
This is main_fragment.java
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View view = inflater.inflate(R.layout.fragment_main, container, false);
final List<import_fragment.Contact> Contacts = new ArrayList<import_fragment.Contact>();
ListView contactListView;
final EditText nametxt, emailTxt, phoneTxt, addressTxt;
nametxt = (EditText) view.findViewById(R.id.txtName);
emailTxt = (EditText) view.findViewById(R.id.txtEmail);
phoneTxt = (EditText) view.findViewById(R.id.txtPhone);
addressTxt = (EditText) view.findViewById(R.id.txtAddress);
contactListView = (ListView) view.findViewById(R.id.listView);
dbHandler = new DatabaseHandler(getActivity().getApplicationContext());
final Button addBtn = (Button) view.findViewById(R.id.btnadd);
addBtn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Uri imageUri = Uri.parse("android.resource://org.intracode.contactmanager/drawable/no_user_logo.png");
import_fragment.Contact contact = new import_fragment.Contact(dbHandler.getContactsCount(), String.valueOf(nametxt.getText()), String.valueOf(phoneTxt.getText()), String.valueOf(emailTxt.getText()), String.valueOf(addressTxt.getText()), imageUri);
if (!contactExists(contact)) {
dbHandler.createContact(contact);
Contacts.add(contact);
if (contactAdapter != null) contactAdapter.notifyDataSetChanged();
Toast.makeText(getActivity().getApplicationContext(), String.valueOf(nametxt.getText()) + " has been added to your Contacts!", Toast.LENGTH_SHORT).show();
return;
}
Toast.makeText(getActivity().getApplicationContext(), String.valueOf(nametxt.getText()) + " already exists. Please use a different name.", Toast.LENGTH_SHORT).show();
}
});
final Button addContact = (Button) view.findViewById(R.id.btnadd);
nametxt.addTextChangedListener(new TextWatcher() {
#Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
#Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
addContact.setEnabled(!nametxt.getText().toString().trim().equals(""));
}
#Override
public void afterTextChanged(Editable s) {
}
});
return view;
}
ArrayAdapter<import_fragment.Contact> contactAdapter;
ListView contactListView;
DatabaseHandler dbHandler;
int longClickedItemIndex;
public void onActivityResult(int reqCode, int resCode, Intent data) {
Uri imageUri = Uri.parse("android.resource://org.intracode.contactmanager/drawable/no_user_logo.png");
ImageView contactImageImgView;
contactImageImgView = (ImageView) getActivity().findViewById(R.id.ivContactImage);
if (resCode == Activity.RESULT_OK) {
if (reqCode == 1) {
imageUri = data.getData();
contactImageImgView.setImageURI(data.getData());
}
}
}
public void onCreateContextMenu(ContextMenu menu, View view, ContextMenu.ContextMenuInfo menuInfo) {
super.onCreateContextMenu(menu, view, menuInfo);
{
ImageView contactImageImgView;
contactImageImgView = (ImageView) view.findViewById(R.id.ivContactImage);
contactImageImgView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intent = new Intent();
intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(Intent.createChooser(intent, "Select Contact Image"), 1);
}
});
if (dbHandler.getContactsCount() != 0)
Contacts.addAll(dbHandler.getAllContacts());
populateList();
}
menu.setHeaderIcon(R.drawable.pencil_icon);
menu.setHeaderTitle("Contact Options");
menu.add(Menu.NONE, EDIT, menu.NONE, "Edit Contact");
menu.add(Menu.NONE, DELETE, menu.NONE, "Delete Contact");
}
public boolean onContextItemSelected(MenuItem item) {
switch (item.getItemId()) {
case EDIT:
// TODO: Implement editing a contact
break;
case DELETE:
dbHandler.deleteContact(Contacts.get(longClickedItemIndex));
Contacts.remove(longClickedItemIndex);
contactAdapter.notifyDataSetChanged();
break;
}
return super.onContextItemSelected(item);
}
private boolean contactExists(import_fragment.Contact contact) {
String name = contact.getName();
int contactCount = Contacts.size();
for (int i = 0; i < contactCount; i++) {
if (name.compareToIgnoreCase(Contacts.get(i).getName()) == 0)
return true;
}
return false;
}
private void populateList() {
contactAdapter = new ContactListAdapter(getActivity());
contactListView.setAdapter(contactAdapter);
}
final List<import_fragment.Contact> Contacts = new ArrayList<import_fragment.Contact>();
private class ContactListAdapter extends ArrayAdapter<import_fragment.Contact> {
public ContactListAdapter(Context cntx) {
super (cntx, R.layout.fragment_import, Contacts);
}
#Override
public View getView(int position, View view, ViewGroup parent) {
if (view == null)
view = getActivity().getLayoutInflater().inflate(R.layout.fragment_import, parent, false);
import_fragment.Contact currentContact = Contacts.get(position);
TextView name = (TextView) view.findViewById(R.id.contactName);
name.setText(currentContact.getName());
TextView phone = (TextView) view.findViewById(R.id.phoneNumber);
phone.setText(currentContact.getPhone());
TextView email = (TextView) view.findViewById(R.id.emailAddress);
email.setText(currentContact.getEmail());
TextView address = (TextView) view.findViewById(R.id.cAddress);
address.setText(currentContact.getAddress());
return view;
}
}
This is import_fragment.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="wrap_content">
<ImageView
android:layout_width="75dp"
android:layout_height="75dp"
android:id="#+id/ivContactImage" />
<LinearLayout
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="91dp">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="Contact Name"
android:id="#+id/contactName"
android:layout_gravity="left|center_vertical"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Phone"
android:id="#+id/phoneNumber"
android:layout_gravity="left|center_vertical"
android:layout_marginTop="5dp"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Email"
android:id="#+id/emailAddress"
android:layout_gravity="left|center_vertical"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Address"
android:id="#+id/cAddress"
android:layout_gravity="left|center_vertical"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="My Contacts"
android:id="#+id/textView"
android:layout_gravity="center"
android:layout_marginTop="10dp"/>
<ListView
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:id="#+id/listView"
android:layout_gravity="center"/>
</LinearLayout>
My listview in import_fragment.xml, when i open import_fragment.xml in app its appear only Contact Name and Phone and Email and Address which is added in import_fragment.xml and not the new contact information which in database added by user.

You have to setAdapter in onCreateView. Currently you are populating the list in onCreateContextMenu. Moreover, after setting the adapter, you have to call notifyDataSetChanged() as well

Try this way, i have tried this in my machine and it show me listview properly , i have done with weightSum so it will be applicable for all devices , just change your xml file with below one
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:weightSum="4">
<ImageView
android:id="#+id/ivContactImage"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1" />
<LinearLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="3"
android:orientation="vertical">
<TextView
android:id="#+id/contactName"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="left|center_vertical"
android:text="Contact Name"
android:textAppearance="?android:attr/textAppearanceMedium" />
<TextView
android:id="#+id/phoneNumber"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="left|center_vertical"
android:layout_marginTop="5dp"
android:text="Phone" />
<TextView
android:id="#+id/emailAddress"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="left|center_vertical"
android:text="Email" />
<TextView
android:id="#+id/cAddress"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="left|center_vertical"
android:text="Address" />
<TextView
android:id="#+id/textView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="left|center_vertical"
android:text="My Contacts"
android:textAppearance="?android:attr/textAppearanceLarge" />
</LinearLayout>
</LinearLayout>
<ListView
android:id="#+id/listView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center" />

Change both of your LinearLayout's height to
android:layout_height="fill_parent"
Your listView is actually "there", it's just that the container (layout) of the listView isn't big enough to fit it.
EDIT:
You are defining two different list of Contacts there! Both activity and adapter class are referring to two different Contacts. Remove the one inside the onCreateView function.
final List<import_fragment.Contact> Contacts = new ArrayList<import_fragment.Contact>();

Get textview of custom adapter android

I have a custom view adapter with four buttons and a title that populate a ListView.
When a user clicks one of those buttons, I want to retrieve the title associated with that specific adapter.
So far I have tried retrieving the parent and getting the textView but that does not return the correct title.
So...how would I get the specific title affiliated to the adapter that has the button the user clicked on?
I'd be happy to clarify if you need more information.
Here is the layout of the adapter.
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<TextView
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:textAppearance="?android:attr/textAppearanceLarge"
android:id="#+id/fragment_student_home_classTitle_textView"
android:paddingTop="20dp"
android:layout_toLeftOf="#+id/linearLayout"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true" />
<LinearLayout
android:orientation="horizontal"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:layout_gravity="right"
android:layout_alignParentTop="true"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true"
android:id="#+id/linearLayout">
<LinearLayout
android:orientation="vertical"
android:layout_width="wrap_content"
android:layout_height="match_parent">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:id="#+id/fragment_student_home_grades"
android:background="#ffff130c" />
<ImageButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/fragment_student_home_grades_imageButton"
android:src="#drawable/ic_grades_512"
android:background="#00000000" />
</LinearLayout>
<LinearLayout
android:orientation="vertical"
android:layout_width="wrap_content"
android:layout_height="match_parent">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:id="#+id/fragment_student_home_notification_textEdit"
android:background="#ffff130c" />
<ImageButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/fragment_student_home_notification_imageButton"
android:src="#drawable/ic_bell_512"
android:background="#00000000" />
</LinearLayout>
<LinearLayout
android:orientation="vertical"
android:layout_width="wrap_content"
android:layout_height="match_parent">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:id="#+id/fragment_student_home_homework"
android:background="#ffff130c" />
<ImageButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/fragment_student_home_homework_imageButton"
android:src="#drawable/ic_foundation_book_bookmark_simple_black_512x512"
android:contentDescription="#string/homework_notification_icon"
android:background="#00000000" />
</LinearLayout>
<LinearLayout
android:orientation="vertical"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:weightSum="1">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:id="#+id/fragment_student_home_attendance"
android:background="#ffff130c" />
<ImageButton
android:layout_width="42dp"
android:layout_height="40dp"
android:id="#+id/fragment_student_home_attendance_imageButton"
android:src="#drawable/ic_attendance"
android:contentDescription="#string/homework_notification_icon"
android:background="#00000000" />
</LinearLayout>
</LinearLayout>
And here is the adapter where I implemented the onClick
public class ClassAdapter extends ArrayAdapter<SchoolClass> implements View.OnClickListener{
private SchoolClass aClass;
public ClassAdapter(Context context, int resource, ArrayList<SchoolClass> objects) {
super(context, resource, objects);
}
public SchoolClass getSchoolClass(){
return this.aClass;
}
public void setSchoolClass(SchoolClass schoolClass){
this.aClass = schoolClass;
}
#Override
public View getView(int position, View convertView, ViewGroup parent){
View v = convertView;
if (v == null) {
LayoutInflater vi;
vi = LayoutInflater.from(getContext());
v = vi.inflate(R.layout.classes_adapter, null);
}
aClass = getItem(position);
if(aClass != null){
TextView title = (TextView) v.findViewById(R.id.fragment_student_home_classTitle_textView);
if(title != null){
title.setText(aClass.getTitle());
}
setSchoolClass(aClass);
}
//set buttons
ImageButton notificationsButton = (ImageButton) v.findViewById(R.id.fragment_student_home_notification_imageButton);
ImageButton gradesButton = (ImageButton) v.findViewById(R.id.fragment_student_home_grades_imageButton);
ImageButton attendanceButton = (ImageButton) v.findViewById(R.id.fragment_student_home_attendance_imageButton);
ImageButton homeworkButton = (ImageButton) v.findViewById(R.id.fragment_student_home_homework_imageButton);
notificationsButton.setOnClickListener(this);
gradesButton.setOnClickListener(this);
attendanceButton.setOnClickListener(this);
homeworkButton.setOnClickListener(this);
return v;
}
#Override
public void onClick(View v) {
Intent intent = new Intent(getContext(), ClassActivity.class);
View parent = (View) v.getRootView();
//v.getParent() returns null when I look for the textView
TextView title = (TextView) parent.findViewById(R.id.fragment_student_home_classTitle_textView);
System.out.println("\n\n title: " + title.getText().toString() + " \n\n");
intent.putExtra("__CLASS_NAME__", title.getText().toString());
It populates a list view and if I were to click on fragment_student_home_attendance_imageButton I would want to get the fragment_student_home_classTitle_textView associated with that ClassAdapter.

Just give a idea to you, hope this can help to fix the problem :)
#Override
public View getView(int position, View convertView, ViewGroup parent){
View v = convertView;
// ....
ImageButton notificationsButton = (ImageButton) v.findViewById(R.id.fragment_student_home_notification_imageButton);
notificationsButton.setTag(R.id.fragment_student_home_notification_imageButton);
// ....
return v;
}
#Override
public void onClick(View v) {
if(v!=null && v.getTag()!=null && v.getTag()==R.id.fragment_student_home_notification_imageButton){
// do something you like
}
}

Ok nevermind, I got it.
#Override
public void onClick(View v) {
Intent intent = new Intent(getContext(), ClassActivity.class);
//It's the parent of the parent OF THE parent where
//the textView lies in my layout.
View parent = (View) v.getParent().getParent().getParent();
TextView title = (TextView) parent.findViewById(R.id.fragment_student_home_classTitle_textView);
System.out.println("\n\n title: " + title.getText().toString() + " \n\n");
intent.putExtra("__CLASS_NAME__", title.getText().toString());
If there is a better way to get this solution, as it seems like a head on approach to the problem, I welcome any comments!

Change inflated row in adapter on click

I have an adapter with buttons and text views. It represents friend requests.
TextView text would be : Do you want to accept X as your friend?
There are 2 buttons : one for accepting, one for declining. Pressing Decline, it would just remove the row from the ListView, while pressing accept will change the text into: X and Y are now friends.
My question is how can I get the position of the row and change it on button press and also save the View for next time I access it?
Adapter : At the moment I don't have proper data structure for the adapter, so for testing purposes, just using a String:
public class FriendRequestAdapter extends BaseAdapter {
String mName;
Context mContext;
public FriendRequestAdapter(String name, Context context) {
this.mName = name;
this.mContext = context;
}
#Override
public int getCount() {
return 1;
}
#Override
public Object getItem(int position) {
return null;
}
#Override
public long getItemId(int position) {
return 0;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
if (convertView == null) {
LayoutInflater mInflater = (LayoutInflater)
mContext.getSystemService(Activity.LAYOUT_INFLATER_SERVICE);
convertView = mInflater.inflate(R.layout.friend_request_layout, null);
}
TextView sender_name = (TextView) convertView.findViewById(R.id.wannabe_name);
if (mName.length() > 11) {
mName = mName.substring(0, 12);
}
sender_name.setText(mName);
ImageButton friend_request_accepted = (ImageButton) convertView.findViewById(R.id.accept_friend_request);
friend_request_accepted.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
new AsyncTask<Void, Void, Void>() {
#Override
protected Void doInBackground(Void... params) {
try {
new APIService().confirmInvite();
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
};
}
});
return convertView;
}
Inflated Layout:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
android:id="#+id/changing_layout"
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#color/check_in_map_menu"
android:descendantFocusability="blocksDescendants">
<RelativeLayout
android:id="#+id/friend_image_container"
android:layout_width="70dp"
android:layout_height="70dp"
android:layout_marginLeft="20dp"
android:layout_marginTop="7dp"
android:background="#drawable/polaroid_frame_friend_list">
<ImageView
android:id="#+id/facebook_friend_pic"
android:layout_width="55dp"
android:layout_height="45dp"
android:layout_marginLeft="5dp"
android:layout_marginTop="5dp"
android:background="#drawable/category_explore"/>
<TextView
android:id="#+id/name_facebook"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#id/facebook_friend_pic"
android:layout_centerHorizontal="true"
android:text="dummy"
android:textColor="#color/enloop_dark_gray"
android:textSize="9sp"/>
</RelativeLayout>
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="7dp"
android:layout_toRightOf="#+id/friend_image_container">
<TextView
android:id="#+id/wannabe_name"
android:layout_width="wrap_content"
android:layout_height="50dp"
android:layout_centerVertical="true"
android:text="dada"
android:textColor="#color/enloop_dark_gray"
android:textSize="15dp"/>
<TextView
android:id="#+id/facebook_friend_name"
android:layout_width="250dp"
android:layout_height="50dp"
android:layout_centerVertical="true"
android:layout_marginLeft="10dp"
android:layout_toRightOf="#+id/wannabe_name"
android:text=" has sent you a request"
android:textColor="#color/enloop_dark_gray"
android:textSize="15dp"/>
<ImageButton
android:id="#+id/later_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:layout_marginTop="40dp"
android:background="#drawable/btn_nothanks"
android:clickable="false"
android:focusable="false"/>
<ImageButton
android:id="#+id/accept_friend_request"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:layout_marginTop="40dp"
android:layout_toRightOf="#+id/later_button"
android:background="#drawable/btn_accept_text"
android:clickable="false"
android:focusable="false"/>
<ImageButton
android:id="#+id/invite_facebook_friends"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_centerVertical="true"
android:layout_marginRight="10dp"
android:background="#drawable/btn_delete_notification"
android:clickable="false"
android:focusable="false"/>
</RelativeLayout>
</RelativeLayout>

Adding Custom Header to List Fragment in Android

I am trying to add a custom header that isnt clickable but will have a checkbox that will "check all" checkboxes under it.
This is my List Fragment
public class AssesmentListFragment extends ListFragment {
private static String BUNDLE_KEY_APPLICATION = "LIST_ITEM";
FastAssesmentListAdapter adapter;
View listHeader;
public AssesmentListFragment() {}
public AssesmentListFragment(Data[] data) {
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Data[] assestments = {new Data("Assesment ID","Name", "Date"), new Data("123456", "Assestment 2", "9/12/12"),
new Data("345672", "Assesment 3", "9/13/12"), new Data("566893", "Assesment 4", "9/14/12")};
//This is the part that makes the app crash
View header = getActivity().getLayoutInflater().inflate(R.layout.list_adapter_assesments, null);
ListView listView = getListView();
listView.addHeaderView(header);
adapter = new FastAssesmentListAdapter(getActivity(), assestments);
setListAdapter(adapter);
updateList(assestments);
}
#Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
}
private void updateList(Data[] assestments) {
// NOTE: addAll is not being used to support pre-honeycomb devices
synchronized(adapter) {
adapter.clear();
adapter.addAll(assestments);
adapter.notifyDataSetChanged();
}
}
#Override
public void onListItemClick(ListView parentView, View selectedItemView, int position, long id) {
String model = (String) parentView.getItemAtPosition(position);
((FacilityActivity) getActivity()).onItemSelected(model);
}
#Override
public void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
//outState.putInt("curChoice", mCurCheckPosition);
}
}
This is the layout I am trying to use for header
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:paddingLeft="25dp"
android:paddingRight="10dp"
android:orientation="horizontal">
<TextView android:id="#+id/adapter_header_textview_column1"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="4"
android:textColor="#color/defaultTextColor"
android:textAppearance="?android:attr/textAppearanceLarge"
android:textSize="28sp"
android:text="Assesment ID" />
<TextView android:id="#+id/adapter_header_textview_column2"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="4"
android:textColor="#color/defaultTextColor"
android:textAppearance="?android:attr/textAppearanceLarge"
android:textSize="28sp"
android:text="Name" />
<TextView android:id="#+id/adapter_header_textview_column3"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="3"
android:textColor="#color/defaultTextColor"
android:textAppearance="?android:attr/textAppearanceLarge"
android:textSize="28sp"
android:text="Date"/>
<CheckBox
android:id="#+id/header_check_box"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:color="#color/defaultTextColor"
android:layout_weight=".5"
android:gravity="center" />
</LinearLayout>
<View
android:layout_width="fill_parent"
android:layout_height="5dp"
android:background="#color/BPGreenColor" />
<ListView
android:id="#android:id/list"
android:layout_width="match_parent"
android:layout_height="wrap_content" >
</ListView>
</LinearLayout>
Then this is the array adapter I am using:
public class FastAssesmentListAdapter extends ArrayAdapter<Data> {
private static int LAYOUT_ID = R.layout.list_adapter_with_checkbox_three_column;
private final Data[] assesments;
private final Context context;
LinearLayout listHeader;
static class ViewHolder {
protected TextView column1;
protected TextView column2;
protected TextView column3;
protected CheckBox checkbox;
}
public FastAssesmentListAdapter(Context context, Data[] assesments) {
super(context, LAYOUT_ID, assesments);
this.context = context;
this.assesments = assesments;
}
//ListFragment and array adapter will automatically call this over and over to auto populate the list
#Override
public View getView(int position, View convertView, ViewGroup parent) {
final Data item = getItem(position);
// Formulate row view (create if it does not exist yet)
View view = convertView;
if(view == null) {
LayoutInflater inflater = ((Activity) getContext()).getLayoutInflater();
view = inflater.inflate(LAYOUT_ID, null);
final ViewHolder viewHolder = new ViewHolder();
viewHolder.column1 = (TextView) view.findViewById(R.id.adapter_textview_column1);
viewHolder.column2 = (TextView) view.findViewById(R.id.adapter_textview_column2);
viewHolder.column3 = (TextView) view.findViewById(R.id.adapter_textview_column3);
viewHolder.checkbox = (CheckBox) view.findViewById(R.id.check_box);
view.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
Toast.makeText(getContext(), "Clicked",
Toast.LENGTH_SHORT).show();
Intent intent = new Intent(getContext(), FacilityActivity.class);
getContext().startActivity(intent);
}
});
if(viewHolder.checkbox != null) {
viewHolder.checkbox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
#Override
public void onCheckedChanged(CompoundButton buttonView,
boolean isChecked) {
if(isChecked) {
item.setSelected(isChecked);
Toast.makeText(getContext(), "Checked",
Toast.LENGTH_SHORT).show();
}
}
});
}
view.setTag(viewHolder);
viewHolder.checkbox.setTag(position);
}
ViewHolder viewHolder = (ViewHolder) view.getTag();
viewHolder.checkbox.setTag(position);
viewHolder.column1.setText(item.getColumn1());
viewHolder.column2.setText(item.getColumn2());
viewHolder.column3.setText(item.getColumn3());
viewHolder.checkbox.setChecked(item.isSelected());
return view;
}
}
on a side note, the onlistitemclicked in the fragment doesnt work, i have to set a listener in the adapter and then it works. any ideas on that? but mainly I need to figure out how to use a custom header and custom rows in the list view. Here is the layout for the rows
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:paddingLeft="25dp"
android:paddingRight="10dp"
android:orientation="horizontal">
<TextView android:id="#+id/adapter_textview_column1"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="4"
android:textAppearance="?android:attr/textAppearanceLarge"
android:textSize="25sp" />
<TextView android:id="#+id/adapter_textview_column2"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="4"
android:textAppearance="?android:attr/textAppearanceLarge"
android:textSize="25sp" />
<TextView android:id="#+id/adapter_textview_column3"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="3"
android:textAppearance="?android:attr/textAppearanceLarge"
android:textSize="25sp" />
<CheckBox
android:id="#+id/check_box"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight=".5"
android:gravity="center" />
</LinearLayout>