I have 3 buttons on my menu screen and I want to link them 3 different activities. Every single button would extends different activity. How it is possible to do? I have no problem when I have 1 class and activity, but it makes problem when I have 3. Thank you.
Assuming you have three activities called MainActivity, SettingsActivity and ProfileActivity, you can do:
#Override
public boolean onOptionsItemSelected(MenuItem item){
Intent intent;
Class<?> cls;
switch(item.getItemId()){
case R.id.main:
cls = MainActivity.class;
break;
case R.id.settings:
cls = ScheduleView.class;
break;
case R.id.profile:
cls = UserPrefsActivity.class;
break;
default:
Log.d(this.getClass().getSimpleName(),"Should not happen");
return false;
}
intent = new Intent(getApplicationContext(), cls);
startActivity(intent);
return true;
}
Related
In my app, I have a searchbox which allows users to filter as they type. For some reason I can't get an InfinteProgress to properly display while the filtering is being executed.
Here's my code:
Pass 1
public void renderForumList(){
try{
magnify = mStateMachine.findForumSearchIcon(form);
}catch(NullPointerException ex){
System.out.println("User typed additional character in search term before previous term finished executing");
}
InfiniteProgress infi = new InfiniteProgress();
magnify.getParent().replace(magnify, infi, null);
Display.getInstance().invokeAndBlock(new Runnable() {
#Override
public void run() {
for (int i = 0;i < containerStates.length;i++){
if(containerStates[i] != listItems[i].isVisible()){
listItems[i].setHidden(!containerStates[i]);
listItems[i].setVisible(containerStates[i]);
}
}
Display.getInstance().callSerially(new Runnable() {
#Override
public void run() {
mStateMachine.findForumsListComponent(form).animateLayout(200);
mStateMachine.findContainer2(form).replace(infi, magnify, null);
}
});
}
});
}
In this version, the infinite progress shows up in the proper position, but it doesn't spin.
Pass 2
public void renderForumList(){
try{
magnify = mStateMachine.findForumSearchIcon(form);
}catch(NullPointerException ex){
System.out.println("User typed additional character in search term before previous term finished executing");
}
InfiniteProgress infi = new InfiniteProgress();
magnify.getParent().replace(magnify, infi, null);
for (int i = 0;i < containerStates.length;i++){
if(containerStates[i] != listItems[i].isVisible()){
listItems[i].setHidden(!containerStates[i]);
listItems[i].setVisible(containerStates[i]);
}
}
mStateMachine.findForumsListComponent(form).animateLayout(200);
mStateMachine.findContainer2(form).replace(infi, magnify, null);
}
}
}
In this version, the magnifier icon just flashes briefly, but the InfiniteProgress spinner is never visible.
I get the same results on the simulator and on an Android device.
How can I get the InfiniteProgress to spin while the search is taking place?
invokeAndBlock opens a new thread and thus violates the EDT as you access UI components on a separate thread.
Try using callSerially instead to postpone the following code into the next EDT cycle although I'm not sure that will help as everything is still happening on the EDT.
Alternatively I'm guessing the method isVisible takes time, so you can enclose that call alone in invokeAndBlock.
To understand invokeAndBlock check out the developer guide https://www.codenameone.com/manual/edt.html
Ok, I'm starting to lose my mind on this one. I have a tableview where there are 3 combobox table cells. The first is a box where a user can select a job, the job selected changes the next combobox's options (job category). The job category selection changes the options in the labor box. So the flow down is:
job > job category > labor.
I have a very peculiar problem. When editing the table, you can click on any box to get a corresponding list of the available selections based on the other fields. This works fine. Where it blows up is when a selection ISN'T made. To make things more interesting, it only effects the job and job category comboboxes the labor box works flawlessly.
symptom:
-- job category selection disappears when edit is canceled via esc or focus lost
-- selection chosen in the job category field is placed into the job field when editing is canceled via esc or upon loss of focus
Here's the steps to recreate the symptoms:
1) click on job category box and enable editing mode
2) make a new selection from the drop down list
new selection made img
3) click on the job box and enable editing
4) click off the job box and cancel editing by click on job category or labor box in the same row
5) enable job category editing and then cancel job category edit by clicking on either labor / labor boxes or using esc
lose the job category / job selections img
here is the code to initialize the graphic when it comes up:
public void initialize(URL location, ResourceBundle resources) {
/* this is here because the screen handler will load up the Main screen in the
in the hashmap; no connection data will be assigned to the user at that time.
Without this block, when the hashmap attempts to load the Main data this
will cause the screenhandler to error and the main application
to not load correctly. The block below initiatializes the connection to
prevent this from happening.*/
if ( vUsers.getConn() == null){
try {
//establishes a user's connection to the database
vUsers.ConnecrDB();
} catch (SQLException | IOException ex) {
//debugging catch
System.out.println(ex);
}
}
//set the job box list for the user
cmbxJobT.setItems(cmbxPopulator.getJobComboBox());
cmbxJobT.valueProperty().addListener(new ChangeListener<String>(){
#Override
//reads the user's selectino and returns the appropriate labor codes for the Employee
public void changed(ObservableValue o, String oldValue, String newValue){
if (newValue != null){
cmbxJobCatT.getItems().clear();
cmbxJobCatT.getItems().addAll(cmbxPopulator.getJobCatComboBox(newValue));
}else {
cmbxJobCatT.getItems().clear();
cmbxJobCatT.getItems().add(null);
}
}
});
cmbxJobCatT.valueProperty().addListener(new ChangeListener<String>(){
#Override
//reads the user's selectino and returns the appropriate labor codes for the Employee
public void changed(ObservableValue o, String oldValue, String newValue){
if (newValue != null){
cmbxLaborT.getItems().clear();
cmbxLaborT.getItems().addAll(cmbxPopulator.getLaborComboBox(newValue));
}else {
cmbxLaborT.getItems().clear();
cmbxLaborT.getItems().add(null);
}
}
});
tblviewTime.getSelectionModel().selectedItemProperty().addListener((obs, oldSelection, newSel) ->{
if (newSel != null){
Model_Time current = tblviewTime.getSelectionModel().getSelectedItem();
cmbxJobCatT.getItems().clear();
cmbxJobCatT.getItems().addAll(cmbxPopulator.getJobCatComboBox(current.getJob()));
cmbxLaborT.getItems().clear();
cmbxLaborT.getItems().addAll(cmbxPopulator.getLaborComboBox(current.getJobCat()));
}
if (newSel == null){
Model_Time current = tblviewTime.getSelectionModel().getSelectedItem();
cmbxJobCatT.getItems().clear();
cmbxJobCatT.getItems().addAll(cmbxPopulator.getJobCatComboBox(current.getJob()));
cmbxLaborT.getItems().clear();
cmbxLaborT.getItems().addAll(cmbxPopulator.getLaborComboBox(current.getJobCat()));
}
});
addDragListeners(bertaTabPane);
}
here's the code that sets up the tableview:
public void btnTimeSearch(ActionEvent event){
//makes an instance of the toolkit needed to query user time.
Database_RetrievesTime userData = new Database_RetrievesTime();
//grabs data from the userinput fields to set the toolkit
userData.setDateSelect(lblPickDateT.getValue());
userData.setJobBoxSelect(jobTbl.getIdByDesc(cmbxJobT.getValue()));
userData.setLaborBoxSelect(laborTbl.getIdByDesc(cmbxLaborT.getValue()));
userData.setJobCatSelect(jobCatTbl.getIdByDesc(cmbxJobCatT.getValue()));
/*creates cell factories in each column and maps the cell values to the
observable array list's IDs. The section also sets the columns up for user
editing to be available and the methods to execute upon an editted cell
being committed to entry.
**NOTE: The values are retrieved by the model class's getter methods.
Changing a name in the model class requires the user to update the getters.
Naming convention does apply. So for example: a variable
named cscHelp is added, it would need to have a getter called getCscHelp otherwise
the corresponding column will return blanks.*/
//setup ID column
IDcol.setCellValueFactory(new PropertyValueFactory<>("ID"));
//setup Datecol
Datecol.setCellValueFactory(new PropertyValueFactory<>("userDate"));
Datecol.setCellFactory(DatePickerTableCell.forTableColumn());
//created a custom datepicker callback that can be reused throughout the code's interfaces
Datecol.setOnEditCommit((CellEditEvent<Model_Time,LocalDate> t) -> {
//generate a temporary variable to convert the LocalDate returned into a SimpleObjectProperty
ObjectProperty<LocalDate> temp = new SimpleObjectProperty(t.getNewValue());
//store the new value to the object's model
t.getRowValue().setUserDate(temp);
//store row's object to the change list
Helper_TimShArrGen.addToEditedMatrix(t.getRowValue());
//signaling to the program that a change had been made
isChanged = true;
});
//job column setup
Jobcol.setCellValueFactory(new PropertyValueFactory<>("Job"));
Jobcol.setCellFactory(ComboBoxTableCell.forTableColumn(cmbxPopulator.getJobComboBox()));
/*creates a combobox filled with the populated items found at initialization of the screen
user inputs are automatically commited
*/
Jobcol.setOnEditCommit((CellEditEvent<Model_Time,String> t) -> {
SimpleStringProperty ssp = new SimpleStringProperty(t.getNewValue());
//store selection to the object's model (unprocessed so values will show something like '6002: Kobota'
t.getRowValue().setJob(ssp);
//store row's object to the change list
Helper_TimShArrGen.addToEditedMatrix(t.getRowValue());
cmbxJobCatT.getItems().clear();
cmbxJobCatT.getItems().addAll(cmbxPopulator.getJobCatComboBox(t.getRowValue().getJob()));
//signaling a change has been made
isChanged = true;
});
jobCatCol.setCellValueFactory(new PropertyValueFactory<>("JobCat"));
jobCatCol.setCellFactory(ComboBoxTableCell.forTableColumn(cmbxPopulator.getJobCatComboBox(cmbxJobT.getValue())));
jobCatCol.setOnEditCommit((CellEditEvent<Model_Time,String> t)->{
SimpleStringProperty ssp = new SimpleStringProperty(t.getNewValue());
//store selection to the object's model (unprocessed so values will show something like '6002: Kobota'
t.getRowValue().setJob(ssp);
//store row's object to the change list
Helper_TimShArrGen.addToEditedMatrix(t.getRowValue());
cmbxLaborT.getItems().clear();
cmbxLaborT.getItems().addAll(cmbxPopulator.getLaborComboBox(t.getRowValue().getJob()));
//signaling a change has been made
isChanged = true;
});
//labor column setup works just like the job column
Laborcol.setCellValueFactory(new PropertyValueFactory<>("Labor"));
Laborcol.setCellFactory(ComboBoxTableCell.forTableColumn(cmbxPopulator.getLaborComboBox(cmbxJobCatT.getValue())));
Laborcol.setOnEditCommit((CellEditEvent<Model_Time,String> t) -> {
SimpleStringProperty ssp = new SimpleStringProperty(t.getNewValue());
t.getRowValue().setLabor(ssp);
Helper_TimShArrGen.addToEditedMatrix(t.getRowValue());
t.getTableView().getItems().get(t.getTablePosition().getRow()).setLabor(ssp);
isChanged = true;
});
//time column setup.
Timecol.setCellValueFactory(new PropertyValueFactory<>("Time"));
Timecol.setCellFactory(TextFieldTableCell.<Model_Time, Float>forTableColumn(new FloatStringConverter()));
Timecol.setOnEditCommit((CellEditEvent<Model_Time,Float> t) -> {
//temp variable initialiation
float token = t.getNewValue();
//generate a temporary variable to convert the float return to a SimpleFloatProperty
SimpleFloatProperty temp = new SimpleFloatProperty(token);
//now update the row's object
t.getRowValue().setTime(temp);
//store row's object to the change list
Helper_TimShArrGen.addToEditedMatrix(t.getRowValue());
isChanged = true;
});
//set tableView editable
tblviewTime.setEditable(true);
//sets tableView to allow multiline selection
TableViewSelectionModel<Model_Time> tvt = tblviewTime.getSelectionModel();
tvt.setSelectionMode(SelectionMode.MULTIPLE);
/* checks if edits have been made. If there are edits, it commits to the
database before wiping the arraylists and updating the table*/
if (isChanged == true){
/*makes sure there are no duplicate entries in the arraylist. Throws out
previous edits and takes the most recent*/
Helper_TimShArrGen.validateMatrixEntries();
//commits changes and resets the "isChanged" value.
isChanged = Helper_TimShArrGen.confirmChanges(vUsers, jobTbl, jobCatTbl, laborTbl, isChanged);
}
/*tells the kit to run the querytime Method which uses the user input data
and user data to search the timesheet tables and returns the user's time.*/
if (isChanged == false){
try {
rs = userData.queryTime(vUsers.getConn(), vUsers.getLogin_ID());
} catch (SQLException ex) {
System.out.println(ex);
}
} else {
return;
}
//sets up the observablelist for the tableview
renderTable.setTableView(tblviewTime);
ObservableList n = renderTable.generateTable(jobTbl, jobCatTbl, laborTbl, rs, vUsers.getConn());
//renders the data on the screen`
tblviewTime.setItems(n);
Helper_TimeBreakDown breakdown = new Helper_TimeBreakDown();
breakdown.setTblArr(n);
breakdown.BreakDwnTim();
lblMonTim.setText(String.valueOf(breakdown.getMon()));
lblTuesTim.setText(String.valueOf(breakdown.getTues()));
lblWedsTim.setText(String.valueOf(breakdown.getWeds()));
lblThursTim.setText(String.valueOf(breakdown.getThurs()));
lblFriTim.setText(String.valueOf(breakdown.getFri()));
lblSatTim.setText(String.valueOf(breakdown.getSat()));
lblSunTim.setText(String.valueOf(breakdown.getSun()));
lblWkTim.setText(String.valueOf(breakdown.getWeek()));
}
this is the segment from the class that handles the data that goes into the lists.
public ObservableList<String> getJobComboBox(){
//clear the jobList to clean out junk data between calls
jobList.clear();
//looks at the job table to determine if the job is active. If active, it reads the entry
for (count=0; count<= jobTbl.getTblArray().size()-1; count++){
if(jobTbl.getTblArray().get(count).isActive()){
/*here we scroll through the JobIDList and match the IDs to the jobtbl
data. When a match is hit, we grab up the number on the job and the description
this is added to another array that will become the combobox's list
*/
for(inCount = 0; inCount <= jobIDList.size()-1; inCount++){
if(jobIDList.get(inCount).getCol2ID() == jobTbl.getTblArray().get(count).getID()){
jobList.add(jobTbl.getNumById(jobIDList.get(inCount).getCol2ID())
+ ": " + jobTbl.getDescById(jobIDList.get(inCount).getCol2ID()));
}
}
}
}
/* there's probably a better dataset to use that won't allow duplicates
due to my lack of knowledge at this time, I elected to create a hashset, pass the arrayList
to the hashset to wipe out duplicates, and then pass it back to the arrayList to be used in the combobox
*/
Set<String> tmp = new HashSet();
tmp.addAll(jobList);
jobList.clear();
jobList.addAll(tmp);
jobList.add(null);
return jobList;
}
/**
*
* #param job Argument for the selected Job String
* #return returns the ObservableList of strings for the Job Category ComboBox
*/
public ObservableList<String> getJobCatComboBox(String job){
//clearing out old artifact data from the previous selection
jobCatList.clear();
//splitting the user's string selection apart (number as string, description as string)
int jID=0;
if (job != null){
if (job.contains(": ")){
String[] tmp = job.split(": ");
job = tmp[1];
}
}
// here we comb the job Table for a matching description and vacuum up the associated ID number
for(count=0; count<=jobTbl.getTblArray().size()-1; count++){
if(jobTbl.getTblArray().get(count).getDesc().equals(job)){
jID = jobTbl.getTblArray().get(count).getID();
}
}
/*using that jobID number to examine the fKey in the category table.
once we match the JobID to the fKey ID in the jobCat table, we scoop up the
the job Category code and description to create a list for the combobox
*/
for (count=0; count<= jobCTbl.getTblArray().size()-1; count++){
for(inCount = 0; inCount <= jobCatIDList.size()-1; inCount++){
if(jobCatIDList.get(inCount).getID() == jobCTbl.getTblArray().get(count).getID()){
if(jobCTbl.getTblArray().get(count).getfKeyId() == jID){
jobCatList.add(jobCTbl.getNumById(jobCatIDList.get(inCount).getID())
+ ": " + jobCTbl.getDescById(jobCatIDList.get(inCount).getID()));
}
}
}
}
//same house keeping to remove duplicates as described above
Set<String> tmp = new HashSet();
tmp.addAll(jobCatList);
jobCatList.clear();
jobCatList.addAll(tmp);
jobCatList.add(null);
return jobCatList;
}
/**
*
* #param jobCat Argument for the selected Job Category String
* #return ObservableList of strings for the Labor ComboBox
*/
public ObservableList<String> getLaborComboBox(String jobCat){
//temp arrays I needed to decode the affiliated connections
ArrayList<Integer> jCID = new ArrayList();
ArrayList<Integer> laborID = new ArrayList();
//house keeping to remove artifact data from previous selections
if(jCID != null){
jCID.clear();
}
if(laborID != null){
laborID.clear();
}
if(laborList !=null){
laborList.clear();
}
//split user's string selection for the job category (numerical code as sting, description as string)
if(jobCat != null){
if (jobCat.contains(": ")){
String[] tmp = jobCat.split(": ");
jobCat = tmp[1];
}
}
//use the description to find the affiliated job category ID
for(count=0; count<=jobCTbl.getTblArray().size()-1; count++){
if(jobCTbl.getTblArray().get(count).getDesc().equals(jobCat)){
jCID.add(jobCTbl.getTblArray().get(count).getID());
}
}
//use the job category ID to find the associated labor IDs from the associate entity table
for(count=0; count<=jCLTbl.getTblArray().size()-1; count++){
for(inCount=0; inCount<=jCID.size()-1; inCount++){
if(jCLTbl.getTblArray().get(count).getCol1ID() == jCID.get(inCount)){
laborID.add(jCLTbl.getTblArray().get(count).getCol2ID());
}
}
}
//use the labor ID to look up the needed data from the labor table.
for (count=0; count<= laborTbl.getTblArray().size()-1; count++){
for(inCount = 0; inCount <= laborID.size()-1; inCount++){
if(laborID.get(inCount) == laborTbl.getTblArray().get(count).getID()){
laborList.add(laborTbl.getNumById(laborID.get(inCount))
+ ": " + laborTbl.getDescById(laborID.get(inCount)));
}
}
}
//more housekeeping to remove duplicate entries.
Set<String> tmp = new HashSet();
tmp.addAll(laborList);
laborList.clear();
laborList.addAll(tmp);
laborList.add(null);
return laborList;
}
I know there are probably better ways to do things here. I'm still new to JAVA and coding. I work at a small company so I'm the only coder they employee. Unfortunately this limits me to what I can teach myself, so there are probably some more efficient ways to accomplish the same mission here. Anyway, if anyone could help me figure out what is going on, it would be appreciated.
The answer to this problem is actually found in the SetOnEdit portion of the jobcatCol.
upon closer inspection and a lot of debugging, I found that this line
t.getRowValue().setJob(ssp);
is actually supposed to be
t.getRowValue().setJobCat(ssp);
I also chose to forego the ComboBoxTableCell API and write my own combobox implementations for each cell. It's a very basic version found here:
public class JobComboBoxCell extends TableCell<Model_Time, String>
{
private ComboBox<String> comboBox;
private Helper_UserSpecificTimDat cmbxPopulator = new Helper_UserSpecificTimDat();
public JobComboBoxCell(Helper_UserSpecificTimDat cmbxPopulator)
{
comboBox = new ComboBox<>();
this.cmbxPopulator = cmbxPopulator;
}
#Override
public void startEdit()
{
if ( !isEmpty() )
{
super.startEdit();
comboBox.setItems( cmbxPopulator.getJobComboBox() );
comboBox.getSelectionModel().select( this.getItem() );
comboBox.focusedProperty().addListener( new ChangeListener<Boolean>()
{
#Override
public void changed( ObservableValue<? extends Boolean> observable, Boolean oldValue, Boolean newValue )
{
if ( !newValue )
{
commitEdit( comboBox.getSelectionModel().getSelectedItem() );
}
}
} );
setText( null );
setGraphic( comboBox );
}
}
#Override
public void cancelEdit()
{
super.cancelEdit();
setText( ( String ) this.getItem() );
setGraphic( null );
}
#Override
public void updateItem( String item, boolean empty )
{
super.updateItem( item, empty );
if ( empty )
{
setText( null );
setGraphic( null );
}
else
{
if ( isEditing() )
{
setText( null );
setGraphic( comboBox );
}
else
{
setText( this.getItem() );
setGraphic( null );
}
}
}
}
This code was courtesy of Uluk Biy's response in thread:Populate combo box list dynamically for each row in javaFx table view
I adapted his code a little bit to specifically fit my needs. This solved a problem with values disappearing from the job category field and from data transferring from the job category field to the Job field.
This was one of the harder pieces of code I've had to troubleshoot. It was a combination of how the ComboBoxTableCell operates, the dynamic data of my comboboxes, and a slip in the which setter I was calling. It was about a perfect storm of flubs that the program saw no exceptions for as a result.
Thank you for the help
When registering a custom language service extension, Visual Studio creates a new options entry for the language within the Text Editor node (in the Visual Studio options dialog). Beneath that node two default nodes are created named General and Tabs, whereby the General tab contains statement completion and display settings...
In the Dispay group there are three options; one of them is the Navigation Bar checkbox (which shows/hides the editor´s navigation bar). For my custom language service, this option is disabled. Of course, it´s not implemented yet.
I would like to know, what I have to do, to provide a navigation bar for my custom editor... I guess that there is a certain interface I have to implement in the editor´s factory, or the language service package must export a certain MEF component, or, or, ...
Jon Senchyna´s answer guided me into the right direction. The OnSynchronizeDropdowns method gets never called (the SDK documentation is just wrong in that case). What did the final trick was to override at least GetComboAttributes, GetEntryAttributes and GetEntryText to get text-only items for both combo boxes...
[ComVisible(true)]
public sealed class CustomTypeAndMemberDropdownBars : TypeAndMemberDropdownBars
{
private readonly IList<string> declarations;
private readonly IList<string> members;
public CustomTypeAndMemberDropdownBars(
LanguageService languageService,
IVsTextView view)
: base(languageService)
{
// TODO: initialize declarations and members from the given text view...
this.declarations = ...
this.members = ...
}
private enum ComboIndex
{
Types = 0,
Members = 1
}
public override int GetComboAttributes(
int combo,
out uint entries,
out uint entryType,
out IntPtr imageList)
{
entries = 0;
imageList = IntPtr.Zero;
entryType = (uint)DROPDOWNENTRYTYPE.ENTRY_TEXT;
var comboType = (ComboIndex)combo;
switch (comboType)
{
case ComboIndex.Types:
entries = (uint)this.declarations.Count();
break;
case ComboIndex.Members:
entries = (uint)this.members.Count();
break;
}
return VSConstants.S_OK;
}
public override int GetEntryAttributes(
int combo,
int entry,
out uint fontAttrs)
{
fontAttrs = (uint)DROPDOWNFONTATTR.FONTATTR_PLAIN;
return VSConstants.S_OK;
}
public override int GetEntryText(
int combo,
int entry,
out string text)
{
text = null;
var comboType = (ComboIndex)combo;
switch (comboType)
{
case ComboIndex.Types:
text = this.declarations[entry];
break;
case ComboIndex.Members:
text = this.members[entry];
break;
}
return VSConstants.S_OK;
}
public override bool OnSynchronizeDropdowns(
LanguageService languageService,
IVsTextView textView,
int line,
int col,
ArrayList dropDownTypes,
ArrayList dropDownMembers,
ref int selectedType,
ref int selectedMember)
{
return false;
}
}
I believe the following steps should be what you need:
In your Package class, set the ShowDropDownOptions property to true in the ProvideLanguageService attribute
Create a class that implements TypeAndMemberDropdownBars
In your LanguageService class, implement the CreateDropDownHelper function and have it return an instance of your TypeAndMemberDropdownBars
i am a newbie in android development. I am now seeking a solution on how i can pass a value from main activity to different fragments. My apps have a main activity and 5 fragments. I would like to do xml parsing in my main and then pass processed data to different fragments so that i can draw different pages at the same time. My main has set a new fragment adapter
mAdapter = new FragmentAdapter(getSupportFragmentManager());
And then in my FragmentAdapter (which extend FragmentPagerAdapter and implements IconPagerAdapter), i have overwrite the getItem method so that i can create 5 fragment to handle 5 different pages.
#Override
public Fragment getItem(int position) {
Fragment fragment = new Fragment1();
switch(position){
case 0:
fragment = new Fragment1();
break;
case 1:
fragment = new Fragment2();
break;
case 2:
fragment = new Fragment3();
break;
case 3:
fragment = new Fragment4();
break;
case 4:
fragment = new Fragment5();
break;
}
return fragment;
}
My question is how i can pass some value from my main to the newly generated fragments.For e.g i would like to pass a value "A" from my main to fragment 1. How can i do this task? Tks in advance for your help!~
You can have a look at this article: http://developer.android.com/training/basics/fragments/communicating.html
Tony, in the link http://developer.android.com/training/basics/fragments/communicating.html
ArticleFragment newFragment = new ArticleFragment();
Bundle args = new Bundle();
args.putInt(ArticleFragment.ARG_POSITION, position);
newFragment.setArguments(args);
The above code snippet allows the MainActivity to pass an int data to the ArticleFragment class.
ArticleFragment class then can use code snippet below to read the int data in say its onCreate method.
int position = getArguments().getInt(ARG_POSITION);
I created a treegrid using GXT 3.now iwant to change background color of selected row and also i want to change the background of root node(leaf row i.e Parent row).
iam using GXT 3.0 and eclipse 3.7
Thanks in advance
I was also having the same problem, I wanted to color the background of a row depending on some condition. In the end, I found a solution:
You need to create a GridViewConfig and override the getColumnStyle method to return the color want, it took me a while to find out, but overriding the getRowStyle method doesn't do the trick, at least not for me.
grid.getView().setViewConfig(new GridViewConfig<Model>() {
#Override
public String getColStyle( Model model,
ValueProvider<? super Model, ?> valueProvider,
int rowIndex, int colIndex)
{
if ("Other2".equals(model.getName())){
return "bold";
}else if ("Other".equals(model.getName())){
return "red-row";
}
return null;
}
#Override
public String getRowStyle(Model model, int rowIndex) {
return null;
}
});
Note: Modify CSS file accordingly.
I think it is the same with GXT 2.x
Just add your own CellRenderer on your ColumnConfig :
List<ColumnConfig> columns = new ArrayList<ColumnConfig>();
ColumnConfig levelColumnConfig = new ColumnConfig("level", "Level", 50);
levelColumnConfig.setRenderer(getGridCellRenderer());
columns.add(levelColumnConfig);
ColumnModel cm = new ColumnModel(columns);
private GridCellRenderer<BeanModel> getGridCellRenderer() {
if (gridCellRenderer == null) {
gridCellRenderer = new GridCellRenderer<BeanModel>() {
#Override
public Object render(BeanModel model, String property, ColumnData config, int rowIndex, int colIndex,
ListStore<BeanModel> store, Grid<BeanModel> grid) {
//add some logic for example
String color = "#000000";
MyBean mybean = (MyBean) model.getBean();
switch (mybean.getLevel()) {
case TRACE:
color = "#f0f0f0";
break;
default:
color = "#000000";
}
// add some background-color
config.style = config.style + ";background-color:" + color + ";";
Object value = model.get(property);
return value;
}
};
}
return gridCellRenderer;
}
I found out that you also can adjust CSS like this:
grid.getCellFormatter().addStyleName(0, colNo - 1, MC_GWT.MC_STYLE_VERTICAL_ICON_HOLDER);
It's a little easier i think :) Especially when you want to style the , f.e. alignment of icons inside of it. In my case i needed to display icons in a vertical row. So i needed to change the Cells display to 'block';