I have a standard com.sun.lwuit.list. I can get the selected item using methods getSelectedItem or getSelectedIndex. The item is a picture and two labels. How do I know if I clicked on the picture or on one of the labels. I admit that it is possible to pass the click event to a child components or perhaps may exists a method for finding component by current mouse coordinates.
public class NewsFeedListRender extends Container implements ListCellRenderer
{
private final Container newsFeedCont = new Container();
private final Container pictureCont = new Container();
private final Label name = new Label();
private final Label message = new Label();
private final Label picture = new Label();
private final Label data = new Label();
....
public NewsFeedListRender()
{
setLayout(new BorderLayout());
newsFeedCont.setLayout(new BoxLayout(BoxLayout.Y_AXIS));
pictureCont.setLayout(new BoxLayout(BoxLayout.Y_AXIS));
Style s = name.getStyle();
s.setFont(font_large);
s = message.getStyle();
s.setFont(font_small);
s = data.getStyle();
s.setFont(font_mini);
.....
}
}
public Component getListCellRendererComponent(List list, Object value, int index, boolean isSelected)
{
if (value instanceof MessageItem)
{
MessageItem newsFeedData = (MessageItem) value;
if (newsFeedData.getSender() != null)
{
if (newsFeedData.getSender().getName() != null)
name.setText(newsFeedData.getSender().getName()); //fixthis
}
else
{
name.setText("Unknown sender");
}
if(newsFeedData.getMessage() != null)
message.setText(newsFeedData.getMessage());
else
{
message.setText("Default message");
}
try
{
data.setText(newsFeedData.getDataReceive().toString());
}
catch (Exception e)
{
System.out.println(e.toString());
}
Image img = null;
img = newsFeedData.getSender().getIcon();
if( img != null)
{
picture.setIcon(img);
}
.......
getSelectedItem() returns the Container object and you can count the value of the Container object. Then you need to get the what are the components you are added into this container. See the sample code,
Container con = (Container) list.getSelectedItem();
for(int i = 0; i < con.getComponentCount(); i++){
Object obj = (Object) con.getComponentAt(i); // typecast component name instead object
}
Related
I want data to be displayed as shown in imageenter image description here
I want to add multiple item of same date in single card view instead of creating another card view for the item of same date
I have tried in Android Studio grouping recycler view called as sanctioned Recycler view where I used date as header but it's not the solution
My Adapter Class
private Context mContext;
List<ListItem> consolidatedList = new ArrayList<>();
public AttendanceAdapter(Context context, List<ListItem>
consolidatedList) {
this.consolidatedList = consolidatedList;
this.mContext = context;
}
#Override
public RecyclerView.ViewHolder
onCreateViewHolder(ViewGroup parent, int viewType) {
RecyclerView.ViewHolder viewHolder = null;
LayoutInflater inflater =
LayoutInflater.from(parent.getContext());
switch (viewType) {
case ListItem.TYPE_GENERAL:
View v1 =
inflater.inflate(R.layout.attendance_adapter_layout, parent,
false);
viewHolder = new GeneralViewHolder(v1);
break;
case ListItem.TYPE_DATE:
View v2 =
inflater.inflate(R.layout.attn_item_header, parent, false);
viewHolder = new DateViewHolder(v2);
break;
}
return viewHolder;
}
#Override
public void onBindViewHolder(RecyclerView.ViewHolder
viewHolder, int position)
{
switch (viewHolder.getItemViewType()) {
case ListItem.TYPE_GENERAL:
GeneralItem generalItem = (GeneralItem)
consolidatedList.get(position);
GeneralViewHolder generalViewHolder=
(GeneralViewHolder) viewHolder;
//generalViewHolder.txt_date.setText(
generalItem.getAttendance_data().getDate());
generalViewHolder.txt_month.setText(
generalItem.getAttendance_data().getMonth_name());
generalViewHolder.txt_date.setText(
generalItem.getAttendance_data().getDate_no());
generalViewHolder.txt_out.setText(
generalItem.getAttendance_data().getAttn_out_time());
generalViewHolder.txt_in.setText(
generalItem.getAttendance_data().getAttn_In_time());
generalViewHolder.txtreason.setText
(generalItem.getAttendance_data().getRemark());
break;
case ListItem.TYPE_DATE:
DateItem dateItem = (DateItem)
consolidatedList.get(position);
DateViewHolder dateViewHolder = (DateViewHolder) viewHolder;
dateViewHolder.txtTitle.setText(dateItem.getDate());
// Populate date item data here
break;
}
}
class DateViewHolder extends RecyclerView.ViewHolder {
protected TextView txtTitle;
public DateViewHolder(View v) {
super(v);
this.txtTitle = (TextView)
v.findViewById(R.id.attn_date);
}
}
// View holder for general row item
class GeneralViewHolder extends RecyclerView.ViewHolder {
protected TextView
txt_in,txtreason,txt_out,txt_date,txt_month;
public GeneralViewHolder(View v) {
super(v);
this.txt_in =v.findViewById(R.id.attn_in_txt);
this.txt_out=v.findViewById(R.id.attn_out_txt);
this.txtreason=v.findViewById(R.id.attn_reason_txt);
this.txt_date=v.findViewById(R.id.date_view);
this.txt_month=v.findViewById(R.id.month_view);
}
}
#Override
public int getItemViewType(int position) {
return consolidatedList.get(position).getType();
}
#Override
public int getItemCount() {
return consolidatedList != null ? consolidatedList.size() : 0;
}
}
MainActivity.Java
public class CurrentMonth extends AsyncTask<Void,Void,Void> {
#Override
protected Void doInBackground(Void... voids) {
attn_list_data_cur_month();
return null;
}
#Override
protected void onPostExecute(Void aVoid) {
super.onPostExecute(aVoid);
updateUi();
}
#Override
protected void onProgressUpdate(Void... values) {
super.onProgressUpdate(values);
}
}
public void attn_list_data_cur_month(){
try {
this.connection=createConnection();
Statement stmt=connection.createStatement();
Calendar current_month_data = Calendar.getInstance();
current_month_data.add(Calendar.MONTH, 0);
//Calendar current_month_date = Calendar.getInstance();
//current_month_date.set(Calendar.DAY_OF_MONTH,0);
n=current_month_data.get(Calendar.DAY_OF_MONTH);
String current_month_year = new SimpleDateFormat("MMM-
yyyy").format(current_month_data.getTime());
String month_name=currentMonth.getText().toString();
for (int i=1;i<=n;i++) {
String date = i + "-" + current_month_year;
ResultSet resultSet = stmt.executeQuery("Select * from
MATTN_MAS where ATTN_DATE='" + date + "' and Username='" +
Username + "'");
String Attn_Type;
if (resultSet.next()) {
while (resultSet.next()) {
Attn_Type = resultSet.getString(8);
String Time = null;
String Reason = resultSet.getString(11);
if (Attn_Type.equals("I")) {
String Attn_Type_In = "I";
String Attn_Type_Out = null;
StringBuilder stringBuilder = new StringBuilder("" + i);
String date_no = stringBuilder.toString();
myOptions.add(new Attendance_Data(Attn_Type_In,
date, Reason, Attn_Type_Out, i, date_no, month_name));
} else {
String Attn_Type_Out = "O";
String Attn_Type_In = null;
StringBuilder stringBuilder = new StringBuilder("" + i);
String date_no = stringBuilder.toString();
myOptions.add(new Attendance_Data(Attn_Type_In,
date, Reason, Attn_Type_Out, i, date_no, month_name));
}
}
} else {
Attn_Type = "Absent";
String Time = null;
String Reason = null;
String out = null;
StringBuilder stringBuilder = new StringBuilder("" + i);
String date_no = stringBuilder.toString();
myOptions.add(new Attendance_Data(Attn_Type, date, Reason,
out, i, date_no, month_name));
}
}
}catch (Exception e){
System.out.println("my Error"+e);
}
}
public void updateUi(){
//sortedData= (List<PojoOfJsonArray>)
PojoOfJsonArray.sortList(myOptions);
HashMap<String, List<Attendance_Data>> groupedHashMap =
groupDataIntoHashMap(myOptions);
for (String date1 : groupedHashMap.keySet()) {
DateItem dateItem = new DateItem();
dateItem.setDate(date1);
consolidatedList.add(dateItem);
for (Attendance_Data pojoOfJsonArray : groupedHashMap.get(date1))
{
GeneralItem generalItem = new GeneralItem();
generalItem.setAttendance_data(pojoOfJsonArray);
consolidatedList.add(generalItem);
}
}
adapter = new AttendanceAdapter(this, consolidatedList);
LinearLayoutManager layoutManager = new LinearLayoutManager(this);
layoutManager.setOrientation(LinearLayoutManager.VERTICAL);
attn_report_view.setLayoutManager(layoutManager);
attn_report_view.setAdapter(adapter);
}
private HashMap<String, List<Attendance_Data>>
groupDataIntoHashMap(List<Attendance_Data> listOfPojosOfJsonArray) {
HashMap<String, List<Attendance_Data>> groupedHashMap = new HashMap<>
();
for (Attendance_Data pojoOfJsonArray : listOfPojosOfJsonArray) {
String hashMapKey = pojoOfJsonArray.getDate();
if (groupedHashMap.containsKey(hashMapKey)) {
// The key is already in the HashMap; add the pojo object
// against the existing key.
groupedHashMap.get(hashMapKey).add(pojoOfJsonArray);
} else {
List<Attendance_Data> list = new ArrayList<>();
list.add(pojoOfJsonArray);
groupedHashMap.put(hashMapKey, list);
}
}
return groupedHashMap;
}
I want to add multiple items of same date in same single single card view but instead it is creating multiple Card View for multiple items of same date
You have to use RecyclerView Multiple ViewTypes. for detail please check this example.
Also visit this example.
Yeah I found the solution it worked perfect for Me.....we
have to just make changes to the card View by removing
spaces..
.
like this below...
<android.support.v7.widget.CardView
android:layout_width="match_parent"
android:layout_height="wrap_content"
card_view:cardMaxElevation="0.1dp"
xmlns:card_view="http://schemas.android.com/apk/res-auto"
android:background="#303030"
card_view:cardElevation="5dp"
android:foreground="?android:attr/selectableItemBackground"
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_marginLeft="#dimen/dp_2"
android:layout_marginRight="#dimen/dp_2">
<...Your All Text Boxes and further Layout inside this
cardView...>
</android.support.v7.widget.CardView>
and I have add Header for each CardView....and it looks like
this
Outout is shown in below image
I am new to programming for winrt. I am using VS 2015, trying to do some testing on ObservableCollection to see how the change in the collection got reflected on the UI. I must have done something incorrectly. Just do not know what.
This is my model:
class MyItems
{
public int ItemID { get; set; }
public string ItemDescription { get; set; }
}
class MyItemList:List<MyItems>
{
public MyItemList()
{
Random r = new Random(DateTime.Now.Day);
for (int i = 0; i < r.Next(10)+1; i++)
{
this.Add(new MyItems() { ItemID = i + 1,
ItemDescription = string.Format("Item_{0}", i + 1) });
}
}
public ObservableCollection<MyItems> getEven()
{
return new ObservableCollection<MyItems>(this.Where(x=>x.ItemID%2==0).ToList());
}
public void AddMoreItems(int v)
{
int total = this.Count;
for (int i = 0 ; i < v; i++)
{
this.Add(new MyItems() { ItemID = total + i, ItemDescription = string.Format("Item_{0}", total+i) });
}
}
}
On MainPage.xaml, I have a button to add items to the list. I have created a listview programmatically and binding to the dataset two ways.
public sealed partial class MainPage : Page
{
static MyItemList myItems = new MyItemList();
public MainPage()
{
this.InitializeComponent();
var t = myItems.getEven();
ListView myListView = new ListView() { ItemTemplate = (DataTemplate)Resources["myItemTemplate"] };
myListView.DataContext = t;
var binding = new Binding();
binding.Source = t;
binding.Mode = BindingMode.TwoWay;
myListView.SetBinding(ListView.ItemsSourceProperty, binding);
MyGrid.Children.Add(myListView);
}
private void AddItems_Click(object sender, RoutedEventArgs e)
{
myItems.AddMoreItems(3);
}
}
When I clicked on the button, 3 more items are added but they are not reflected in my listview. Something else needs to be done beside using the ObservableCollection and set binding to twoWays?
Your problem, essentially, is here:
public ObservableCollection<MyItems> getEven()
{
return new ObservableCollection<MyItems>(this.Where(x=>x.ItemID%2==0).ToList());
}
When you query this and call ToList(), you are creating a new list that is independent of the original. If you add items to the original, it's not going to be reflected in your derived list. Think of it this way:
public ObservableCollection<MyItems> getEven()
{
var filteredList = this.Where(x=>x.ItemID%2==0).ToList()
return new ObservableCollection<MyItems>(filteredList);
}
Adding to this is not going to change the contents filteredList at all.
Additionally, creating a new ObservableCollection every time you access getEven instead of modifying an existing one means that the events when adding and deleting to the observable collection will never fire.
You are using observable collections in a fundamentally incorrect way. Why not just have MyItemList derive from ObservableCollection<T> instead of List<T>?
Collection that inherits from ObservableCollection - What are the benefits?
Also, if you're trying to filter by even/odd, you should look into ICollectionView
WPF Binding filtered ObservableCollection ICollectionView to Combobox
Senior Geeks.
I'd like to request a simple but fully working example of how to implement an ExpandableListView while extending from BaseExpandableListAdapter Yet Reading data from an Sqlite Database.
I have researched and experimented on the question (see here), but with minimal success where i was able to display some data in the header, albeit it was same values repeating for all group headers. Also child items don't show.
The reason for extending with BaseExpandableListAdapter is to have a custom layout for the group header. The reason for SQLite access is naturally because thats where my data is stored.
All examples trawled on the net so far use either SimpleCursorTreeAdapter or CursorTreeAdapter as the extender in DB based applications or simply BaseExpandableListAdapter when data used is in ArrayLists.
Below is the Experimentation thus far. (with this code,only the group header is populated with the same figures over and over. Childitems dont appear)
public class ExpandableListViewAdapterCustom extends BaseExpandableListAdapter {
protected Activity currentActivity;
public ExpandableListViewAdapterCustom(Activity callingActivity){
this.currentActivity = callingActivity;
}
private Cursor mGroupsCursorLocal ;
private Cursor mChildCursor;
private Context ctx;
private int groupItem;
private int childItem;
private String[] fieldsToUseFromGroupCursor;
private int[] screenTextsToMapGroupDataTo;
private String[] fieldsToUseFromChildCursor;
private int[] screenTextsToMapChildDataTo;
public ArrayList<String> tempChild;
public LayoutInflater minflater;
public Activity activity;
public int intGroupTotal;
public void setCurrentActivity(Activity activity) {
this.activity = activity;
}
public void setCtx(Context ctx) {
this.ctx = ctx;
}
public void setGroupItem(int groupItem) {
this.groupItem = groupItem;
}
public void setChildItem(int childItem) {
this.childItem = childItem;
}
public Activity getCurrentActivity() {
return currentActivity;
}
public Cursor getmGroupsCursorLocal() {
return mGroupsCursorLocal;
}
public Context getCtx() {
return currentActivity.getBaseContext();
}
public void setmGroupsCursorLocal(Cursor mGroupsCursor) {
this.mGroupsCursorLocal = mGroupsCursor;
}
public ExpandableListViewAdapterCustom(Cursor mGroupsCursor,
Activity activity,
int groupItem,
int childItem,
String[] fieldsToUseFromGroupCursor,
int[] screenTextsToMapGroupDataTo,
String[] fieldsToUseFromChildCursor,
int[] screenTextsToMapChildDataTo) {
DatabaseRoutines db = new DatabaseRoutines(activity);
setmGroupsCursorLocal(mGroupsCursor);
mGroupsCursorLocal = db.fetchGroup();
activity.startManagingCursor (mGroupsCursor);
mGroupsCursorLocal.moveToFirst();
mChildCursor=db.fetchChildren(mGroupsCursorLocal.getColumnIndex("Year"));
mChildCursor.moveToFirst();
activity.startManagingCursor(mChildCursor);
setCtx(activity);
setCurrentActivity(activity);
}
public void setInflater(LayoutInflater mInflater, Activity act) {
this.minflater = mInflater;
activity = act;
}
#Override
public Object getChild(int groupPosition, int childPosition) {
return null;
}
#Override
public long getChildId(int groupPosition, int childPosition) {
return 0;
}
#Override
public View getChildView(int groupPosition,
int childPosition,boolean
isLastChild,
View convertView,
ViewGroup parent) {
View v = convertView;
if (v == null)
{
LayoutInflater inflater =
(LayoutInflater) ctx.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
v = inflater.inflate(R.layout.exp_listview_childrow, parent, false);
}
TextView txtMonth = (TextView) v.findViewById(R.id.txtMonth);
TextView txtMonthAmountSent = (TextView)
v.findViewById(R.id.txtMonthAmountSentValue);
TextView txtMonthReceived = (TextView)
v.findViewById(R.id.txtMonthAmountReceivedValue);
txtMonth.setText(mChildCursor.getString(mChildCursor.getColumnIndex("Month")));
txtMonthAmountSent.setText
(mChildCursor.getString(mChildCursor.getColumnIndex("TotalSent")));
txtMonthReceived.setText
(mChildCursor.getString(mChildCursor.getColumnIndex("TotalReceived")));
return v;
}
#Override
public int getChildrenCount(int groupPosition) {
return (mChildCursor.getCount());
}
#Override
public Object getGroup(int groupPosition) {
return null;
}
#Override
public int getGroupCount() {
return mGroupsCursorLocal.getCount();
}
#Override
public void onGroupCollapsed(int groupPosition) {
super.onGroupCollapsed(groupPosition);
}
#Override
public void onGroupExpanded(int groupPosition) {
super.onGroupExpanded(groupPosition);
}
#Override
public long getGroupId(int groupPosition) {
return 0;
}
#Override
public View getGroupView(
int groupPosition,
boolean isExpanded,
View convertView,
ViewGroup parent)
{
View v = convertView;
if (v == null) {
LayoutInflater inflater =
(LayoutInflater) ctx.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
v = inflater.inflate(R.layout.exp_listview_groupheader, parent, false);
}
TextView txtYear = (TextView) v.findViewById(R.id.txtYearValue);
TextView txtAmountSent = (TextView) v.findViewById(R.id.txtAmountSentValue);
TextView txtAmountRecieved = (TextView)
v.findViewById(R.id.txtAmountReceivedValue);
txtYear.setText(mGroupsCursorLocal.getString(
mGroupsCursorLocal.getColumnIndex("Year")));
txtAmountSent.setText(
mGroupsCursorLocal.getString(mGroupsCursorLocal.getColumnIndex("TotalSent")));
txtAmountRecieved.setText(
GroupsCursorLocal.getString(mGroupsCursorLocal.getColumnIndex("TotalReceived")));
return v;
}
#Override
public boolean hasStableIds() {
return true;
}
#Override
public boolean isChildSelectable(int groupPosition, int childPosition) {
return false;
}
}
The Database code is like this
public Cursor fetchGroup() {
SQLiteDatabase db = this.getReadableDatabase(); //if memory leaks check here
String query = "SELECT DISTINCT MIN(ID) AS id,
Year, SUM(SentAmount) AS TotalSent, SUM(ReceivedAmount) AS TotalReceived
FROM MyTbl GROUP BY Year ORDER BY Year DESC ";
return db.rawQuery(query, null);}
public Cursor fetchChildren(int Yr) {
SQLiteDatabase db = this.getReadableDatabase(); //if memory leaks check here
String query = "SELECT MIN(ID) AS id,
Year, Month, SUM(SentAmount) AS TotalSent,
SUM(ReceivedAmount) AS TotalReceived
FROM MyTbl Where Year= "+ Yr +" GROUP BY Year,
Month ORDER BY Year DESC, Month DESC";
return db.rawQuery(query, null);
}
The Code is called from main activity using the following
ExpandableListView elv = (ExpandableListView)
findViewById(R.id.expandableListView);
ExpandableListAdapter mAdapter = new
ExpandableListViewAdapterCustom(mGroupsCursor,
MyActivity.this,
R.layout.exp_listview_groupheader,// Your row layout for a group
R.layout.exp_listview_childrow, // Your row layout for a child
new String[] { "Year",
"TotalSent",
"TotalReceived" },// Field(s) to use from group cursor
new int[] {R.id.txtYearValue,
R.id.txtAmountSentValue,
R.id.txtAmountReceivedValue },// Widget ids to put group data
into new String[] { "Year","Month",
"TotalSent",
"TotalReceived" }, // Field(s) to use from child cursors new
int[] {R.id.txtMonthValue,
R.id.txtMonthAmountSentValue,
R.id.txtMonthAmountReceivedValue});// Widget ids to put child d
data into
elv.setClickable(true);
elv.setAdapter(mAdapter); // set the
After almost two weeks and no answer, i decided to simply use an ExpandableListView example using ArrayLists and modified it such that the ArrayLists were populated by data from the DB. Its not what i wanted but it works. I was actually suprised that nowhwere on the web is there an example of using ExpandableListview extended form BaseAdapter but reading from SQlite using say cursorTreeAdapter or SimpleCursorAdapter.
Below is how i did it in case it helps someone in future. the code shown is the bit that populates the ArrayList from DB
public ArrayList<ExpandListGroup> SetStandardGroups() {
ArrayList<ExpandListGroup> list = new ArrayList<ExpandListGroup>();
ArrayList<ExpandListChild> list2 = new ArrayList<ExpandListChild>();
int intMonthNum;
ExpandListGroup grp;
ExpandListChild chld;
//initialize db code here
DatabaseRoutines db = new DatabaseRoutines(this);
//create the Groups retreival cursor;
Cursor mGroupsCursor = db.fetchGroup();
//---the database call is done using this code which is in my
//---custom db class which implements the sqlhelper methods etc
//------start of db code snippet-------------------------------
//---public Cursor fetchGroup() {
//---SQLiteDatabase db = this.getReadableDatabase();
//--- String query = "SELECT DISTINCT MIN(ID) AS id, Year,
//--- SUM(SentAmount) AS TotalSent,
//--- SUM(ReceivedAmount) AS TotalReceived
//--- FROM Tbl GROUP BY Year ORDER BY Year DESC ";
//--- return db.rawQuery(query, null);}
//------end of db code snippet-------------------------------
mGroupsCursor.moveToFirst();
//method is depreciated from api14 but i'm targeting Gingerbread (api10) so i need to use it.
startManagingCursor(mGroupsCursor);
int intYear;
int intHeaderCounter = 0;
int intChildCounter = 0;
int intChildTotalCount = 0;
int intHeaderTotalGroupCount = mGroupsCursor.getCount();
//set the starting Year for the loop, if there is data;
if (intHeaderTotalGroupCount > 0) {
//get the first year
//intYear = mGroupsCursor.getInt(mGroupsCursor.getColumnIndex("Year"));
for (intHeaderCounter = 0; intHeaderCounter < intHeaderTotalGroupCount; intHeaderCounter++) {
grp = new ExpandListGroup();
intYear = mGroupsCursor.getInt(mGroupsCursor.getColumnIndex("Year"));
grp.setYear(intYear);
grp.setYearAmountReceived(mGroupsCursor.getDouble(mGroupsCursor.getColumnIndex("TotalReceived")));
grp.setYearAmountSent(mGroupsCursor.getDouble(mGroupsCursor.getColumnIndex("TotalSent")));
grp.setTag(mGroupsCursor.getString(mGroupsCursor.getColumnIndex("id")));
//Prepare counters for inner loop for child items of each
Cursor mChildCursor = db.fetchChildren(intYear);
mChildCursor.moveToFirst();
intChildTotalCount = mChildCursor.getCount();
//populate child items
for (intChildCounter = 0; intChildCounter < intChildTotalCount; intChildCounter++) {
chld = new ExpandListChild();
intMonthNum = mChildCursor.getInt(mChildCursor.getColumnIndex("Month"));
chld.setMonthNumber(intMonthNum);
chld.setTotalReceivedMonth(mChildCursor.getInt(mChildCursor.getColumnIndex("TotalReceived")));
chld.setTotalSentMonth(mChildCursor.getInt(mChildCursor.getColumnIndex("TotalSent")));
chld.setTag(mGroupsCursor.getString(mGroupsCursor.getColumnIndex("id")).toString());
list2.add(chld);
//grp.setItems(list2);
//move to next child record;
mChildCursor.moveToNext();
}
grp.setItems(list2);
list.add(grp);
list2 = new ArrayList<ExpandListChild>();
//move to next parent record;
mGroupsCursor.moveToNext();
}
} else {
log.d( "yourdebugtag_here", "Sorry, No Transactions Found.");
}
//db.close();
return list;
}
I want to ask about finding a location using the action bar. I've made the program as shown below :
I've made a class to find location. but at the time I called into the EditText search, class does not work.
// An AsyncTask class for accessing the GeoCoding Web Service
private class GeocoderTask extends AsyncTask<String, Void, List<Address>>{
#Override
protected List<Address> doInBackground(String... locationName) {
// Creating an instance of Geocoder class
Geocoder geocoder = new Geocoder(getBaseContext());
List<Address> addresses = null;
try {
// Getting a maximum of 3 Address that matches the input text
addresses = geocoder.getFromLocationName(locationName[0], 3);
} catch (IOException e) {
e.printStackTrace();
}
return addresses;
}
}
protected void onPostExecute(List<Address> addresses) {
if(addresses==null || addresses.size()==0){
Toast.makeText(getBaseContext(), "No Location found", Toast.LENGTH_SHORT).show();
}
// Clears all the existing markers on the map
map.clear();
// Adding Markers on Google Map for each matching address
for(int i=0;i<addresses.size();i++){
Address address = (Address) addresses.get(i);
// Creating an instance of GeoPoint, to display in Google Map
latLng = new LatLng(address.getLatitude(), address.getLongitude());
String addressText = String.format("%s, %s",
address.getMaxAddressLineIndex() > 0 ? address.getAddressLine(0) : "",
address.getCountryName());
markerOptions = new MarkerOptions();
markerOptions.position(latLng);
markerOptions.title(addressText);
map.addMarker(markerOptions);
// Locate the first location
if(i==0)
map.animateCamera(CameraUpdateFactory.newLatLngZoom(latLng,10));
}
}
and I had to call the class to the class action bar menu. like this:
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.cost_direction, menu);
/** Get the action view of the menu item whose id is search */
View v = (View) menu.findItem(R.id.search).getActionView();
/** Get the edit text from the action view */
EditText txtSearch = ( EditText ) v.findViewById(R.id.txt_search);
/** Setting an action listener */
txtSearch.setOnEditorActionListener(new OnEditorActionListener() {
#Override
public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
// Getting user input location
String location = v.getText().toString();
if(location!=null && !location.equals("")){
new GeocoderTask().execute(location);
}
Toast.makeText(getBaseContext(), "Search : " + v.getText(), Toast.LENGTH_SHORT).show();
return false;
}
});
return super.onCreateOptionsMenu(menu);
}
please help for those who know about the problems I was having. :)
String strPlace = etSearch.getText().toString();
Geocoder gc = new Geocoder(getBaseContext(), Locale.getDefault());
List<Address> adrs = null;
try{
adrs = gc.getFromLocationName(strPlace,5);
}catch(IOException e){
}finally{
if (adrs != null){
if(adrs.size() > 0)
{
LatLng loc = new LatLng(adrs.get(0).getLatitude(), adrs.get(0).getLongitude());
map.moveCamera(CameraUpdateFactory.newLatLngZoom(loc, 15));
// Zoom in, animating the camera.
map.animateCamera(CameraUpdateFactory.zoomTo(13), 2000, null);
}
i want to set a title and an image to lwuit list from Rss feed,i am able to set title ,but i dont know how to set an image?after i set an image and title ,then i need to display it on form...
here my code:,Help...
public void disp() {
//String[] items={newsItem.getTitle()};
for(int i=0;i<news.size();i++){
newsItem=(News)news.elementAt(i);
myNewsList.addItem(newsItem.getTitle().toString());
System.out.println(newsItem.getTitle());
}
try{
System.out.println("hiii");
form1.addComponent(myNewsList);
form1.addCommand(cmdDetails);
form1.setScrollable(true);
form1.setTransitionInAnimator(Transition3D.createRotation(250, true));
form1.show();
}
catch(Exception e){
e.printStackTrace();
}
You can use list renderer to add image and text in single list item.
NewsListRenderer.java
public class NewsListRenderer implements ListCellRenderer {
private Label lblImage;
private TextArea textAreaHeadline;
public Component getListCellRendererComponent(List arg0, Object obj,
int arg2, boolean isSelected) {
Container newsContainer = new Container();
newsContainer.setLayout(new BoxLayout(BoxLayout.X_AXIS));
News newsListObj = (News) obj;
Image img = newsListObj.getThumbnail();
lblImage = new Label(img);
lblImage.getStyle().setBgTransparency(0);
lblImage.setTextPosition(Component.BOTTOM);
newsContainer.addComponent(lblImage);
textAreaHeadline = new TextArea(3, 25);
textAreaHeadline.setSelectedStyle(textAreaHeadline.getStyle());
textAreaHeadline.setText(newsListObj.getHeadLine());
textAreaHeadline.setEditable(false);
textAreaHeadline.getStyle().setBorder(null);
textAreaHeadline.setFocusable(false);
textAreaHeadline.getStyle().setBgTransparency(0);
newsContainer.addComponent(textAreaHeadline);
return newsContainer;
}
public Component getListFocusComponent(List arg0) {
return new Container();
}
}
Members of News Class:
1) News title - getHeadLine() to retrieve title.
2) News Image - getThumbnail() to retrieve image.
myNewsList = new List(news);
myNewsList.setListCellRenderer(new NewsListRenderer());
form1.addComponent(myNewsList);
form1.addCommand(cmdDetails);
form1.setScrollable(true);
form1.setTransitionInAnimator(Transition3D.createRotation(250, true));
form1.show();