I am using Blackberry Plug-in and i am using Rich Lists of blackberry.
I want to make lists appear the same number of times as there are entries in the database table.
I m using the below code but it shows only one name in list view.
I need to show all the entries in database into list view...Kindly help me..
I have already used list.add(); inside the for loop but it is showing Exception: java.lang.IllegalStateException: Field added to a manager while it is already parented.
public static void richlistshow(){
String name = null;
list = new RichList(mainManager, true, 2, 0);
Bitmap logoBitmap = Bitmap.getBitmapResource("delete.png");
delete = new BitmapField(logoBitmap, Field.FIELD_HCENTER);
for (int c = 0; c < target_list.size();c++){
City tar_city = new City();
tar_city = (City)target_list.elementAt(c);
name = tar_city.get_city_name().toString();
}
//adding lists to the screen
list.add(new Object[] {delete,name,"time-date"});
}
You didn't posted full codes you are working with. But following code may help you to get rid of IllegalStateException. You were adding same BitmapField instance for every list entries, which caused the exception.
public static void richlistshow() {
final Bitmap logoBitmap = Bitmap.getBitmapResource("delete.png");
list = new RichList(mainManager, true, 2, 0);
for (int c = 0; c < target_list.size(); c++) {
// create a new BitmapField for every entry.
// An UI Field can't have more than one parent.
final BitmapField delete = new BitmapField(logoBitmap, Field.FIELD_HCENTER);
City tar_city = (City) target_list.elementAt(c);
final String name = tar_city.get_city_name().toString();
// add to list
UiApplication.getUiApplication().invokeLater(new Runnable() {
public void run() {
list.add(new Object[] { delete, name, "time-date" });
}
});
}
}
Related
I have created a table below that has name of the places as its entryPoint in the first column. I want to keep a textfield so that one can search for the place he wants to view in the table.
How can i do this? For eg: if i type "a" in text field, all the places starting from "a" only are shown in the table.
json value for table
connectionRequest = new ConnectionRequest() {
#Override
protected void readResponse(InputStream input) throws IOException {
JSONParser p = new JSONParser();
results = p.parse(new InputStreamReader(input));
responseInout = (Vector) results.get("inout");
for (int i = 0; i < responseInout.size(); i++) {
Hashtable hash = (Hashtable) responseInout.get(i);
String entryPoint = (String) hash.get("entry_point");
String passengerIn = (String) hash.get("passenger_in");
String passengerOut = (String) hash.get("passenger_out");
String vehicleIn = (String) hash.get("vehicle_in");
String vehicleOut = (String) hash.get("vehicle_out");
dataInOut[i][0] = entryPoint;
dataInOut[i][1] = passengerIn;
dataInOut[i][2] = passengerOut;
dataInOut[i][3] = vehicleIn;
dataInOut[i][4] = vehicleOut;
}
}
connectionRequest.setPost(false);
connectionRequest.setUrl("http://capitaleyedevelopment.com/~admin/traffic/api/reports/getReports/2015-12-30");
connectionRequest.setDuplicateSupported(true);
NetworkManager.getInstance().addToQueueAndWait(connectionRequest);
//table
Table table = new MyTable(new DefaultTableModel(columnNamesInOut, dataInOut));
//what to do here in textField
TextField tf = new TextField();
tf.addDataChangeListener(new DataChangedListener() {
#Override
public void dataChanged(int type, int index) {
String searchPlace = tf.getText();
}
});
You can have two types of "search":
Data narrowing - this will hide the rows where the text doesn't show.
Highlight - this will highlight the cells where the data appears
If you choose the data narrowing route just create a new model without the rows that don't contain the data you want and invoke: table.setModel(searchModel); this will leave only the search results.
If you want the highlighting mode In the search field just call table.setModel(table.getModel()); this will force the table to rebuild.
Then override in the table:
protected Component createCell(Object value, int row, int column, boolean editable) {
Component c = super.createCell(value, row, column, editable);
if(isSearchedValue(value)) {
c.setUIID("SearchResult");
}
return c;
}
Then style SearchResult to be the highlight color you want and all is well...
I'm having some real problems passing a single string from my main activity to my db helper class. Here is my main activity method which I am returning a string 'answerSetId':
public String showNextRandomQuestion3() {
SQLDatabaseHelper db = new SQLDatabaseHelper(this);
//get the data from the database
List<List<String>> listList = db.getAllAnswersByQuestion1();
//Get the question/text/answer Strings
List<String> questionStrings = listList.get(0); //question Strings
List<String> answerSetIds = listList.get(4);
//Generate random index
Random r = new Random();
int rand = Math.abs((r.nextInt() % questionStrings.size()));
//get answer description for randomly selected question
String questionString = questionStrings.get(rand);
String answerSetId = answerSetIds.get(rand);
questionView.setText(questionString);
return answerSetId;
}
I specifically want to use this 'answerSetId' in one method in my db helper class (as part of a query). Here is my current code - but it is capturing an empty string '[]':
public List<List<String>> getAnswers(String answerSetId) {
List<String> array1 = new ArrayList<String>();
List<String> array2 = new ArrayList<String>();
System.out.println(answerSetId);
SQLiteDatabase db = this.getReadableDatabase();
String[] columns = new String[]{TDESCR, ADESCR};
String selection = ASID+"=?";
String[] selectionArgs = new String[]{String.valueOf(answerSetId)};
Cursor c = db.query(TABLE_ANSWERS, columns, selection, selectionArgs, null, null, null);
if (c.moveToFirst()) {
do {
String textdescr = c.getString(c.getColumnIndex(TDESCR));
String answersdescr = c.getString(c.getColumnIndex(ADESCR));
array1.add(textdescr);
array2.add(answersdescr);
} while (c.moveToNext());
}
List< List<String> > listArray2 = new ArrayList< List<String> >();
listArray2.add(array1);
listArray2.add(array2);
return listArray2;
}
You can see that I want to use this method to retrun some more array data based on the query using the 'answerSetId' string - you'll also see where I have added a system print out which gives the empty value '[]'. But am only bothered about actually capturing the 'answerSetId' value from my main activity at this point.
How best to achieve this?
the arrays of data I will then pass onto my 'showNextAnswer()' method:
public String showNextAnswers() {
SQLDatabaseHelper db = new SQLDatabaseHelper(this);
//get the data from the database
List<List<String>> listList = db.getAnswers(answerSetId);
//Get the question/text/answer Strings
List<String> textDescrs = listList.get(0); //question Strings
// List<String> answerDescrs = listList.get(1); //text strings
// System.out.println(answerSetId);
answerView3.setText(textDescrs.toString());
String textDescriptions = textDescrs.toString();
// String regex = "\\[|\\]";
// textDescriptions = textDescriptions.replaceAll(regex, "");
//Separate out the question/answer of text description associated with the randomly selected question
StringTokenizer textDescr = new StringTokenizer(textDescriptions, ",");
String first = textDescr.nextToken();
// String second = textDescr.nextToken();
// String third = textDescr.nextToken();
// String fourth = textDescr.nextToken();
subQuestionView1.setText(first);
// subQuestionView2.setText(second);
// subQuestionView3.setText(third);
// answerView3.setText(fourth);
// System.out.println(textDescr);
return null;
}
FYI - I call 'showNextRandomQuestion3()' from an onClick method when user clicks to go to a next question - a new random question and the related answers to that new question will appear each click:
NextQuestionButton.setOnClickListener(new OnClickListener(){;
#Override
public void onClick(View v) {
showNextRandomQuestion3();
showNextAnswers();
countQuestions();
}});
It looks like the solution is very simple. You just capture the return value of showNextRandomQuestion3(), since it returns answerSetId.
You will need to add a String parameter to the showNextAnswers() method to take the String that was returned from showNextRandomQuestion3().
So in your click event, you would do this:
NextQuestionButton.setOnClickListener(new OnClickListener(){;
#Override
public void onClick(View v) {
String answerSetId = showNextRandomQuestion3(); //get return value
showNextAnswers(answerSetId); //give the ID here
countQuestions();
}});
Then, just add the parameter to showNextAnswers(), and you're done!
public String showNextAnswers(String answerSetId) {
SQLDatabaseHelper db = new SQLDatabaseHelper(this);
//get the data from the database
List<List<String>> listList = db.getAnswers(answerSetId); //This will work now!
//.................
I am trying to create a method that will update a list that has already been created. Im not sure why this is not working?
It throws a null pointer exception.
This is my code:
private void UpdateJList(){
String query = "SELECT * FROM names WHERE TYA=?";
String partialSearch = "Sales";
try{
connect.pst = connect.con.prepareStatement(query);
connect.pst.setString(1, partialSearch);
connect.pst.execute();
ArrayList<String> add = new ArrayList<String>();
String[] items = {};
while (connect.rs.next()){
String result = connect.rs.getString("ACNO");
add.add(result);
int length = add.size();
DefaultListModel<String> model;
model = new DefaultListModel<String>();
for (int i=0; i<length; i++){
model.add(i, result);
}
jList1.setModel(model);
jList1.setSelectedIndex(0);
}
}catch(Exception e){
JOptionPane.showMessageDialog(null, e);
}
}
Thank you in advance!!
There are 2 major problems with that code:
In the while loop, you are creating many instances of DefaultListModel. That means, for each entry of the query result, you are restarting the list.
A nullpointer exception is produced by the line: connect.rs.next() because you didn't assign connect.rs with the query's resultset.
Currently, this is my main screen:
()
I have 2 files: “patient.txt” and “treatment.txt” which hold records of multiple patients and treatments.
What I’m trying to do is to display all of those records in a nice JTable whenever I click “Display Treatments” or “Display Patients”, in a screen like so:
I am using an MVC model for this Hospital Management System (with HMSGUIModel.java, HMSGUIView.java, HMSGUIController.java, HMSGUIInterface.java files), and add records using the following code:
FileWriter tfw = new FileWriter(file.getAbsoluteFile(), true);
BufferedWriter tbw = new BufferedWriter(tfw);
tbw.write(this.view.gettNumber() + "," + this.view.gettName() + "," + this.view.gettDoctor() + "," + this.view.gettRoom());
tbw.newLine();
tbw.flush();
JOptionPane.showMessageDialog(null, "Successfully added treatment!"); }
Please help on how I can add a reader as well, to display all the records from the text file to a table?
Many thanks in advance!!
Keeping in line with your MVC, you could create a TableModel which knew how to read a give patient record.
Personally though, I'd prefer to separate the management of the patient data from the view, so the view didn't care about where the data came from.
To this end, I would start by creating a Patient object and a Treatment object, these would hold the data in a self contained entity, making the management simpler...
You would need to read this data in and parse the results...
List<Treatment> treatments = new ArrayList<Treatment>(25);
try (BufferedReader br = new BufferedReader(new FileReader(file))) {
String text = null;
while ((text = br.readline()) != null) {
String parts[] = text.split(",");
Treatmeant treament = new Treatment(parts[0],
parts[1],
parts[2],
parts[3]);
treatments.add(treament);
}
} // Handle exception as required...
I'd wrap this into a readTreatments method in some utility class to make it easier to use...
Around about here, I'd be considering using a stand alone database or even an XML document, but that's just me.
Once you have this, you can design a TableModel to support it...
public class TreatmentTableModel extends AbstractTableModel {
protected static final String[] COUMN_NAMES = {
"Treatment-Number",
"Treatment-Name",
"Doctor-in-charge",
"Room-No",
};
protected static final Class[] COLUMN_CLASSES = new Class[]{
Integer.class,
String.class,
Doctor.class,
Integer.class,
};
private List<Treatment> treatments;
public TreatmentTableModel() {
this.treatments = new ArrayList<>();
}
public TreatmentTableModel(List<Treatment> treatments) {
this.treatments = new ArrayList<>(treatments);
}
#Override
public int getRowCount() {
return treatments.size();
}
#Override
public int getColumnCount() {
return 4;
}
#Override
public String getColumnName(int column) {
return COUMN_NAMES[column];
}
#Override
public Class<?> getColumnClass(int columnIndex) {
return COLUMN_CLASSES[columnIndex];
}
#Override
public Object getValueAt(int rowIndex, int columnIndex) {
Treatment treatment = treatments.get(rowIndex);
Object value = null;
switch (columnIndex) {
case 0:
value = treatment.getNumber();
break;
case 1:
value = treatment.getName();
break;
case 2:
value = treatment.getDoctor();
break;
case 3:
value = treatment.getRoomNumber();
break;
}
return value;
}
}
Then you simply apply it to what ever JTable you need...
private JTable treatments;
//...
treatments = new JTable(new TreatmentTableModel());
add(new JScrollPane(treatments));
Then, we you need to, you would load the List of Treatments and apply it to the table...
File file = new File("...");
treatments.setModel(new TreatmentTableModel(TreatmentUtilities.readTreatments(file)));
Depending on your needs for the table, you can look at using the DefaultTableModel and populating your data using that model. The downside to that is, you may want special capability from your table, like not being able to edit cells, store more than strings, etc... in which case you might look in to extending AbstractTableModel and defining your own behavior for the model.
A simple thing to do would be to start with the default model and expand on that.
String[] myColumns = {"Treatment-Number","Treatment-Name", "Doctor-in-charge", "Room-No"};
// init a model with no data and the specified column names
DefaultTableModel myModel = new DefaultTableModel(new Object[myList.size()][4](), myColumns);
// assuming you have a list of lists...
int i = 0;
int j = 0;
for (ArrayList<Object> list : myList) {
for ( Object o : list ) {
myModel.setValueAt(o, i, j); // set the value at cell i,j to o
j++;
}
i++;
}
JTable myTable = new JTable(myModel); // make a new table with the specified data model
// ... do other stuff with the table
If you want to access the table data, you use myTable.getModel() and update the data. This will automatically update the view of the table (completing the MVC connection)
Look here for more info on using tables.
I want to modify an existing *.rptdesign file and save it under a new name.
The existing file contains a Data Set with a template SQL select statement and several DS parameters.
I'd like to use an actual SQL select statement which uses only part of the DS parameters.
However, the following code results in the exception:
Exception in thread "main" `java.lang.RuntimeException`: *The structure is floating, and its handle is invalid!*
at org.eclipse.birt.report.model.api.StructureHandle.getStringProperty(StructureHandle.java:207)
at org.eclipse.birt.report.model.api.DataSetParameterHandle.getName(DataSetParameterHandle.java:143)
at org.eclipse.birt.report.model.api.DataSetHandle$DataSetParametersPropertyHandle.removeParamBindingsFor(DataSetHandle.java:851)
at org.eclipse.birt.report.model.api.DataSetHandle$DataSetParametersPropertyHandle.removeItems(DataSetHandle.java:694)
--
OdaDataSetHandle dsMaster = (OdaDataSetHandle) report.findDataSet("Master");
HashSet<String> bindVarsUsed = new HashSet<String>();
...
// find out which DS parameters are actually used
HashSet<String> bindVarsUsed = new HashSet<String>();
...
ArrayList<OdaDataSetParameterHandle> toRemove = new ArrayList<OdaDataSetParameterHandle>();
for (Iterator iter = dsMaster.parametersIterator(); iter.hasNext(); ) {
OdaDataSetParameterHandle dsPara = (OdaDataSetParameterHandle)iter.next();
String name = dsPara.getName();
if (name.startsWith("param_")) {
String bindVarName = name.substring(6);
if (!bindVarsUsed.contains(bindVarName)) {
toRemove.add(dsPara);
}
}
}
PropertyHandle paramsHandle = dsMaster.getPropertyHandle( OdaDataSetHandle.PARAMETERS_PROP );
paramsHandle.removeItems(toRemove);
What is wrong here?
Has anyone used the DE API to remove parameters from an existing Data Set?
I had similar issue. Resolved it by calling 'removeItem' multiple times and also had to re-evaluate parametersIterator everytime.
protected void updateDataSetParameters(OdaDataSetHandle dataSetHandle) throws SemanticException {
int countMatches = StringUtils.countMatches(dataSetHandle.getQueryText(), "?");
int paramIndex = 0;
do {
paramIndex = 0;
PropertyHandle odaDataSetParameterProp = dataSetHandle.getPropertyHandle(OdaDataSetHandle.PARAMETERS_PROP);
Iterator parametersIterator = dataSetHandle.parametersIterator();
while(parametersIterator.hasNext()) {
Object next = parametersIterator.next();
paramIndex++;
if(paramIndex > countMatches) {
odaDataSetParameterProp.removeItem(next);
break;
}
}
if(paramIndex < countMatches) {
paramIndex++;
OdaDataSetParameter dataSetParameter = createDataSetParameter(paramIndex);
odaDataSetParameterProp.addItem(dataSetParameter);
}
} while(countMatches != paramIndex);
}
private OdaDataSetParameter createDataSetParameter(int paramIndex) {
OdaDataSetParameter dataSetParameter = StructureFactory.createOdaDataSetParameter();
dataSetParameter.setName("param_" + paramIndex);
dataSetParameter.setDataType(DesignChoiceConstants.PARAM_TYPE_INTEGER);
dataSetParameter.setNativeDataType(1);
dataSetParameter.setPosition(paramIndex);
dataSetParameter.setIsInput(true);
dataSetParameter.setIsOutput(false);
dataSetParameter.setExpressionProperty("defaultValue", new Expression("<evaluation script>", ExpressionType.JAVASCRIPT));
return dataSetParameter;
}