Develop Reference

Scrolling issue in listview

//Filling the ArrayList From the Fragment
gridmodel = new TypeTruckPogo("Truck 14 wheel",-1,false);
list.add(gridmodel);
gridmodel = new TypeTruckPogo("Truck 16 wheel",-1,false);
list.add(gridmodel);
final TypeOfTruckAdapter truckAdapter=new TypeOfTruckAdapter(context, list);
truckListView.setAdapter(truckAdapter);
//My POGO CLASS
public class TypeTruckPogo{
String typeOfTruckName;
int nmbrOfTruck;
boolean isEditTextVisiable;
public TypeTruckPogo(String typeOfTruckName,int nmbrOfTruck,boolean isEditTextVisiable){
this.typeOfTruckName=typeOfTruckName;
this.nmbrOfTruck=nmbrOfTruck;
this.isEditTextVisiable=isEditTextVisiable;
}
public String getTypeOfTruckName() {
return typeOfTruckName;
}
public String setTypeOfTruckName(String typeOfTruckName) {
this.typeOfTruckName = typeOfTruckName;
return typeOfTruckName;
}
public int getNmbrOfTruck() {
return nmbrOfTruck;
}
public Integer setNmbrOfTruck(int nmbrOfTruck) {
this.nmbrOfTruck = nmbrOfTruck;
return nmbrOfTruck;
}
public boolean isEditTextVisiable() {
return isEditTextVisiable;
}
public Boolean setIsEditTextVisiable(boolean isEditTextVisiable) {
this.isEditTextVisiable = isEditTextVisiable;
return isEditTextVisiable;
}
}
// My Adapter Class,this class have 20 item in the list,at first time it's showing 8 item , when user press on single row then editText become visible and if user press the same position twice the editText become inviable,But the problem is that when user tap on any position(let say he tapped on position 0) then editText is visible but when i scroll down then other editText is also becoming visible sometime position 8 sometime 15.ANY HELP APPRECIATED !!!! Single row contain textView and editText
public class TypeOfTruckAdapter extends BaseAdapter{
List<TypeTruckPogo> list;
Context context;
LayoutInflater inflater;
public String[] Current;
TypeTruckPogo typeTruckPogo;
public static HashMap<Integer,String> truckHashMap=new HashMap<Integer,String>();
public TypeOfTruckAdapter( Context context,List<TypeTruckPogo> list) {
this.list = list;
this.context = context;
for(int i=0;i<list.size();i++)
{
truckHashMap.put(i,"");
}
}
#Override
public int getCount() {
// TODO Auto-generated method stub
return list.size();
}
#Override
public Object getItem(int arg0) {
// TODO Auto-generated method stub
return null;
}
#Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return position;
}
class Viewholder{
TextView name;
EditText nmbrOfTruck;
int ref;
Viewholder(View view) {
name = (TextView) view.findViewById(R.id.textView1);
nmbrOfTruck = (EditText) view.findViewById(R.id.et_nmbr_of_truck_id);
}
}
#Override
public View getView(final int position, View convertView, ViewGroup parent) {
final Viewholder holder;
typeTruckPogo = list.get(position);
if(convertView==null){
inflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = inflater.inflate(R.layout.single_row_for_type_of_truck, parent, false);
holder = new Viewholder(convertView);
convertView.setTag(holder);
}else{
holder = (Viewholder)convertView.getTag();
}
// For position zero i have to set the text color to blue color,else dark gray color
if(position==0){
holder.name.setTextColor(context.getResources().getColor(R.color.blue_color));
}else{
holder.name.setTextColor(context.getResources().getColor(R.color.darkgray));
}
// setting the name on the textview
holder.name.setText(list.get(position).getTypeOfTruckName());
//setting the tag on edittext
holder.nmbrOfTruck.setTag(position);
//setting the viewholder position
holder.ref = position;
// clicking on listview making edittext to appear (initially edittext is invisiable)
// if edittext is visiable make it invisiable and if it is invisiable make it visiable
convertView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if (v.findViewById(R.id.et_nmbr_of_truck_id).getVisibility() == View.VISIBLE) {
v.findViewById(R.id.et_nmbr_of_truck_id).setVisibility(View.INVISIBLE);
} else {
v.findViewById(R.id.et_nmbr_of_truck_id).setVisibility(View.VISIBLE);
}
}
});
// if user write on editText save the input by the user in specified position
//truckHashMap is hashmap where I saving the position as a key and value as the user Input
holder.nmbrOfTruck.addTextChangedListener(new TextWatcher() {
public void onTextChanged(CharSequence s, int start,
int before, int count) {
}
public void beforeTextChanged(CharSequence s, int start,
int count, int after) {
// TODO Auto-generated method stub
}
public void afterTextChanged(Editable s) {
Current = new String[holder.ref];
truckHashMap.put(position, s.toString().trim());
}
});
// Setting the User Input at specified Position
holder.nmbrOfTruck.setText(truckHashMap.get(position));
Config.colorFont(context, null, holder.name, null);
return convertView;
}

You have to use else statement which set your default text color in your adapter:
...
if(position==0){
holder.name.setTextColor(context.getResources().getColor(R.color.blue_color));
} else {
// here set your default text color black for example
holder.name.setTextColor(context.getResources().getColor(R.color.black_color));
}
...
Hope it helps!

Where your else condition ?
if(position==0)
{
holder.name.setTextColor(context.getResources().getColor(R.color.blue_color));
} else {
// Calling when if Condition not Satisfied .
holder.name.setTextColor(context.getResources().getColor("Your_Color"));
}

How to update values in database using an update image button in custom list adapter?

This is my custom list adapter. I want to update the values in table using the update ImageButton in the list. On clicking it, the old values should be shown in a new activity and then the edited value must be stored in the database. However, I am unable to pass an intent inside the onClick() method.
Please suggest me a solution
public class CustomListAdapter extends BaseAdapter implements ListAdapter
{
private ArrayList<String> list = new ArrayList<String>();
private Context context;
OnItemSelectedListener onItemSelectedListener;
public int pos;
String pass,pass2,edit,epass;
public CustomListAdapter(List list, Context context) {
this.list = (ArrayList<String>) list;
this.context = context;
}
#Override
public int getCount() {
return list.size();
}
#Override
public Object getItem(int pos) {
//pass2 = list.toString();
return list.get(pos);
}
//#Override
//public Long getItemId(int pos) {
//
// //just return 0 if your list items do not have an Id variable.
//}
#Override
public View getView(final int position, View convertView, ViewGroup parent) {
View view = convertView;
if (view == null) {
LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
view = inflater.inflate(R.layout.layout_custom_list, null);
}
//Handle TextView and display string from your list
final TextView listItemText = (TextView)view.findViewById(R.id.list_item_string);
listItemText.setText(list.get(position));
//Handle buttons and add onClickListeners
ImageButton deleteBtn = (ImageButton)view.findViewById(R.id.delete_btn);
ImageButton editBtn = (ImageButton)view.findViewById(R.id.edit_btn);
//Button addBtn = (Button)view.findViewById(R.id.add_btn);
deleteBtn.setOnClickListener(new View.OnClickListener(){
#Override
public void onClick(View v) {
//do something
list.remove(position);
pass = listItemText.getText().toString();
notifyDataSetChanged();
pass2 = pass.substring(0,pass.indexOf(' '));
System.out.println(pass2);
Moneydb.delete(pass2);
}
});
editBtn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v2) {
// TODO Auto-generated method stub
edit=listItemText.getText().toString();
epass = listItemText.getText().toString();
edit = epass.substring(0,epass.indexOf(' '));
Moneydb.edit(edit);
}
});
return view;
}
protected Context getContext() {
// TODO Auto-generated method stub
return null;
}
#Override
public long getItemId(int position) {
// TODO Auto-generated method stub
//return list.get(position).getId();
return 0;
}
public void clear() {
//CustomListAdapter collection = null;
// TODO Auto-generated method stub
list.clear();
notifyDataSetChanged();
}

I suggest you to assign and ContextMenu to your list view with two MenuItem, Edit and Delete and write associated code outside of adapter
or you can start Activity by :
Intent new_intent = new Intent(v.getRootView().getContext(),edit_activity.class);
new_intent.putExtra("Key","Value");
v.getRootView().getContext().startActivity(new_intent);
i think the first method is best ;)

How do I get my CustomListAdapter to update on notifyDatasetChange?

This is the first time I am building a Listview with a custom layout, so in case I have missed something obvious please just point it out.
The problem I am having that I cannot get the listview to update itself with new information after the Oncreate(); has been used. So the list is very static.
I am trying to create a custom listview adapter that looks as such:
public class MainListCustomBaseAdapter extends BaseAdapter {
static ArrayList<ListItems> DataSomething;
static Context Cont;
public MainListCustomBaseAdapter (ArrayList<ListItems> data, Context c){
DataSomething = data;
Cont = c;
}
public int getCount() {
// TODO Auto-generated method stub
return DataSomething.size();
}
public Object getItem(int position) {
// TODO Auto-generated method stub
return DataSomething.get(position);
}
public long getItemId(int position) {
// TODO Auto-generated method stub
return position;
}
public View getView(int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
View v = convertView;
if (v == null)
{
LayoutInflater vi = (LayoutInflater)Cont.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
v = vi.inflate(R.layout.mainlistlayout, null);
}
ImageView image = (ImageView) v.findViewById(R.id.ListImage);
TextView titleView = (TextView)v.findViewById(R.id.title);
TextView DetailItemView = (TextView)v.findViewById(R.id.DetailItem);
ListItems msg = DataSomething.get(position);
image.setImageResource(msg.icon);
titleView.setText(msg.title);
DetailItemView.setText("ItemDetails: "+msg.ItemDetails);
return v;
}
public void updateResults(ArrayList<MainListCustomBaseAdapter> results){
notifyDataSetChanged();
}
}
My Oncreate looks like this:
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
RecipeList = (ListView) findViewById(R.id.mainListView);
ShoppingItems = new ArrayList<ListItems>();
RecipeList.setAdapter(new MainListCustomBaseAdapter(ShoppingItems, this));
ListItems Detail;
Detail = new ListItems();
Detail.setIcon(R.drawable.food);
Detail.setName("Food Stuff");
Detail.setItemDetails("ItemDetailsComp");
ShoppingItems.add(Detail);
}
and listitem looks like this:
public class ListItems {
public int icon ;
public String title;
public String ItemDetails;
public String getName() {
return title;
}
public void setName(String from) {
this.title = from;
}
public String getItemDetails() {
return ItemDetails;
}
public void setItemDetails(String ItemDetailsComp) {
this.ItemDetails = ItemDetailsComp;
}
public int getIcon() {
return icon;
}
public void setIcon(int icon) {
this.icon = icon;
}
}
How do I get the listview to update dynamically? with maybe a SetInvalidatedViews() or notifyDatasetchanged()?
Any help is deeply appreciated.

Use the below
MainListCustomBaseAdapter adapter = new MainListCustomBaseAdapter(ShoppingItems, this)
RecipeList.setAdapter(adapter);
To refresh or update listview
adapter.notifyDataSetChanged();
public void notifyDataSetChanged ()
Added in API level 1
Notifies the attached observers that the underlying data has been
changed and any View reflecting the data set should refresh itself.

put this line after adding the element in the arraylist
RecipeList.setAdapter(new MainListCustomBaseAdapter(ShoppingItems, this));

custom listview edit value

i have EditText in second activity.so the value enter here will be added to the custom listview in first activity.
i first activity in list i have textview,checkbox and button(edit). here textview will be from second activity edittext data. so here if i click on edit then it navigates to second activity of that particular data .am getting all these now .. in second acitity i want to edit the textfield value .so it has to display the edited value with this data in listview of particular row.
public class MyApplication extends Application{
ArrayList<String> arryList = new ArrayList<String>();
String cardNumberData=null;
}
public class Second extends Activity{
EditText cardNumber;
String cardNumberReceived;
MyApplication app;
#Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.editcredit);
cardNumberReceived = getIntent().getStringExtra("cardwithoutstring");
System.out.println("cardWithOutStringReceived"+cardNumberReceived);
app = ((MyApplication) getApplicationContext());
cardNumber =(EditText)findViewById(R.id.cardnumber);
cardNumber.setText(cardNumberReceived);
Button save =(Button)findViewById(R.id.save);
save.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
app.cardNumberData =cardNumber.getText().toString();
System.out.println("Gotcardname"+app.cardNumberData);
app.arryList.add(app.cardNumberData);
System.out.println("Array List Size "+app.arryList.size());
System.out.println("Array List Size "+app.cardTypeList.size());
Intent saveIntent =new Intent(Second.this,First.class);
startActivity(saveIntent);
}
});
}
}
public class First extends Activity{
protected ListItemsState[] mDeletedItemsStates;
protected ArrayAdapter<ListItemsState> mListAdapter;
protected ListView mFoldersListView;
protected Context mContext;
LayoutInflater lay;
MyApplication app;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.newcard);
app = ((MyApplication) getApplicationContext());
mDeletedItemsStates = (ListItemsState[])getLastNonConfigurationInstance();
if (mDeletedItemsStates == null) {
mDeletedItemsStates = new ListItemsState[app.arryList.size()];
for (int i = 0; i < app.arryList.size(); i++) {
mDeletedItemsStates[i] = new ListItemsState(app.arryList.get(i),i);
}
}
ArrayList<ListItemsState> gridItemsList = new ArrayList<ListItemsState>();
gridItemsList.addAll(Arrays.asList(mDeletedItemsStates));
mListAdapter = new DeletedItemsStateArrayAdapter(this, gridItemsList);
mFoldersListView.setAdapter(mListAdapter);
mFoldersListView.setChoiceMode(ListView.CHOICE_MODE_SINGLE);
mFoldersListView.setOnItemClickListener(new OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
long arg3) {
Toast.makeText(getApplicationContext(), "am thelist",
Toast.LENGTH_LONG).show();
}
});
}
private static class ListItemsState {
private String produ = "";
private boolean checked = false;
private int position;
public ListItemsState(String produ, int position) {
this.position = position;
}
public String getProdu() {
return produ;
}
public int getPosition() {
return position;
}
public boolean isChecked() {
return checked;
}
public void setChecked(boolean checked) {
this.checked = checked;
}
}
/** Holds child views for one row. */
private static class ListItemsStateViewHolder {
private RadioButton checkBox;
private TextView produ;
private Button edit;
public TextView getProdu() {
return produ;
}
public Button getEdit() {
return edit;
}
public RadioButton getCheckBox() {
return checkBox;
}
}
private class DeletedItemsStateArrayAdapter extends
ArrayAdapter<ListItemsState> {
private int mSelectedPosition = -1;
private RadioButton mSelectedRB;
private LayoutInflater inflater;
public DeletedItemsStateArrayAdapter(Context context,
List<ListItemsState> sentItemsStateList) {
super(context, R.layout.customlist, R.id.card,
sentItemsStateList);
// Cache the LayoutInflate to avoid asking for a new one each time.
inflater = LayoutInflater.from(context);
}
#Override
public View getView(final int position, View convertView,
ViewGroup parent) {
final ListItemsState deletedItemsState = (ListItemsState) this
.getItem(position);
ListItemsStateViewHolder viewHolder = new ListItemsStateViewHolder();
// Create a new row view
if (convertView == null) {
convertView = inflater.inflate(R.layout.customlist, null);
convertView.setTag(new ListItemsStateViewHolder());
}
else {
viewHolder = (ListItemsStateViewHolder) convertView.getTag();
viewHolder.checkBox = viewHolder.getCheckBox();
viewHolder.produ = viewHolder.getProdu();
viewHolder.edit = viewHolder.getEdit();
}
viewHolder.produ = (TextView) convertView.findViewById(R.id.card);
viewHolder.checkBox = (RadioButton) convertView.findViewById(R.id.radioButton1);
viewHolder.edit=(Button)convertView.findViewById(R.id.editbutton);
try {
viewHolder.checkBox.setTag(deletedItemsState);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
viewHolder.edit.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View arg0) {
Intent edit =new Intent(getApplicationContext(), Second.class);
edit.putExtra("cardNumberSending",app.arryList.get(position));
edit.putExtra("Indexvalue",mFoldersListView.getItemIdAtPosition(position));
System.out.println("Index value ::::::::: "+mFoldersListView.getItemIdAtPosition(position));
startActivity(edit);
}
});
viewHolder.produ.setText(deletedItemsState.getProdu());
return convertView;
}
}
public Object onRetainNonConfigurationInstance() {
return mDeletedItemsStates;
}
}

You are adding the edited data to the ArrayList Again avoid it inside the Second Activity
app.cardNumberData = cardNumber.getText().toString();
if(arryList.indexOf(cardNumberReceived) != -1)
{
app.arryList.set(arryList.indexOf(cardNumberReceived), app.cardNumberData);
}else
{
app.arryList.add(app.cardNumberData);
}
In your second Activity do this onClick of save.

How to Display two dimensional Array in ListView?

I Have 2D Array and this 2D Array has Strings. I would like to know How to Display the Strings in ListView?how to scroll both vertically and horizontally?
String[][] board = new String[][] {{"1","10","100"},{"hi0","1hello","test"},{"test31","test32","test43"}};

It seem to be you are asking basic things, How to use ListView. please check it you will get all about ListView.
Android ListView and ListActivity

It is to display two-d array in list view.Here's my source code in which i have implemented 2-d array in list view
My Adapter class:-
public class MyArrayAdapter extends ArrayAdapter<List>{
QuickActionDemo quickActionDemo;
public Activity context;
public List<List> list;
int CAMERA_PIC_REQUEST=10;
private int selectedPos = -1;
int clickPosition,rowPosition;
Camera camera;
private static final String TAG = "CameraDemo";
public MyArrayAdapter(Activity context,List<List> list) {
super(context,R.layout.attach_pic,list);
this.context = context;
this.list = list;
}
#Override
public int getCount() {
// TODO Auto-generated method stub
return list.size();
}
#Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return position+1;
}
static class ViewHolder {
public TextView tv1,tv2,tv3;
}
#Override
public View getView(final int position, View convertView, ViewGroup parent) {
View rowView = null;
final ViewHolder holder = new ViewHolder();
if (convertView == null) {
LayoutInflater inflator = context.getLayoutInflater();
rowView = inflator.inflate(R.layout.attach_pic, null);
holder.tv1 = (TextView) rowView.findViewById(R.id.defectpic);
holder.tv2 = (TextView) rowView.findViewById(R.id.no_of_uploded_pics);
holder.tv3 = (TextView) rowView.findViewById(R.id.camera);
holder.tv3.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
// Intent in = new Intent(getContext(),QuickActionDemo.class);
// context.startActivityForResult(in,0);
}
});
rowView.setTag(holder);
List itemVal1 = (List)getItem(position);
String st1 = (String)itemVal1.get(0);
holder.tv1.setText(st1);
List itemVal2 = (List)getItem(position);
String st2 = (String)itemVal2.get(1);
holder.tv2.setText(st2);
} else {
rowView = convertView;
((ViewHolder) rowView.getTag()).tv1.setTag(list.get(position));
((ViewHolder) rowView.getTag()).tv2.setTag(list.get(position));
((ViewHolder) rowView.getTag()).tv3.setTag(list.get(position));
}
return rowView;
}
#Override
public int getItemViewType(int position) {
// TODO Auto-generated method stub
return position;
}
#Override
public int getViewTypeCount() {
// TODO Auto-generated method stub
return list.size();
}
}
Here's my activity class:-
public class MyActivity extends ListActivity {
Context context;
#Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
// requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_HIDDEN); // to hide the virtual keyboard
setContentView(R.layout.defect_pic_listview);
try{
ArrayAdapter<List> adapter = new MyArrayAdapter(this,makeList());
setListAdapter(adapter);
}
}
private List<List> makeList(){
List<List> all = new ArrayList();
String[] newArray1 = {"Defect Picture1", "2"};
List<String> newListObject1 = Arrays.asList(newArray1);
String[] newArray2 = {"Defect Picture2","1"};
List<String> newListObject2 = Arrays.asList(newArray2);
String[] newArray3 = {"Defect Picture3","4"};
List<String> newListObject3 = Arrays.asList(newArray3);
String[] newArray4 = {"Defect Picture4","1"};
List<String> newListObject4 = Arrays.asList(newArray4);
String[] newArray5 = {"Defect Picture5","3"};
List<String> newListObject5 = Arrays.asList(newArray5);
all.add(newListObject1);
all.add(newListObject2);
all.add(newListObject3);
all.add(newListObject4);
all.add(newListObject5);
return all;
}
}

Creating a model as an inner class always works well.
Good way to store any number of items.
public class ActivityClass extends Activity {
...
ArrayList<ValuesModel> listViewValues = new ArrayList<ValuesModel>();
listViewValues.add(new ValuesModel("row title", "row details"));
ListViewAdapter listAdapter = new ListViewAdapter(this, listViewValues);
((ListView) findViewById(android.R.id.list)).setAdapter(listAdapter);
...
public class ValuesModel {
private String rowTitle;
private String rowDetails;
public ValuesModel(String rowTitle, String rowDetails) {
this.rowTitle = rowTitle;
this.rowDetails = rowDetails;
}
public String getRowTitle() {
return rowTitle;
}
public String getRowDetails() {
return rowDetails();
}
}
Then inside of your list adapter,
public class ListViewAdapter extends ArrayAdapter<ActivityClass.ValuesModel> {
private ArrayList<ActivityClass.ValuesModel> mValues;
...
#Override
public View getView(int position, View convertView, ViewGroup parent) {
...
//here whenever you need to retrieve your values, just say:
// mValues.get(position).getRowTitle();
// mValues.get(position).getRowDetails();
//if you use a viewholder pattern, you can do this:
viewHolder.rowTitle = (TextView) convertView.findViewById(R.id.row_title_textview);
viewHolder.rowTitle.setText(mValues.get(position).getRowTitle());
...
}
}