What I am trying to accomplish is to take an array, sort it, pull the first 5 results and display them in a small window. It was recommended to me to try to accomplish this using the previously mentioned methods as shown in the below code. I am still quite new to Android and this is my first attempt at utilizing StringBuffer and AlertDialog.
My error is that I have either done something wrong initializing the lastScoreMessage variable or I am passing it around incorrectly. All I know is that even though I am specifically calling it in my onClick switch case, it is giving me an error saying it is never used (in the lastFive method) and Cannot resolve symbol lastScoreMessage in the onClick switch statement where I am attempting to use it.
Any help here is greatly appreciated.
public class EditTextButtons extends AppCompatActivity implements View.OnClickListener {
DBHandler db;
Calendar c = Calendar.getInstance ( );
Date d = c.getTime ( );
EditText etName;
Button btnAdd;
Button btnLastFive;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate (savedInstanceState);
setContentView (R.layout.snake_layout_r);
db = new DBHandler (this);
etName = (EditText) findViewById (R.id.etName);
btnAdd = (Button) findViewById (R.id.btnAdd);
btnLastFive = (Button) findViewById (R.id.btnLastFive);
// set listeners
btnAdd.setOnClickListener (this);
btnLastFive.setOnClickListener (this);
}
#Override
public void onClick(View v) {
switch (v.getId ( )) {
case R.id.btnAdd:
insertIntoDB ( );
Intent i = new Intent (getApplicationContext ( ), Snake.class);
startActivity (i);
break;
case R.id.btnLastFive:
lastFive ();
showMessage ("Last 5 Scores", lastScoreMessage);
break;
default:
break;
}
}
protected void insertIntoDB() {
ContentValues cv = new ContentValues ( );
cv.put (db.USERNAME, etName.getText ( ).toString ( ));
}
protected void lastFive() {
int listsize = 5;
List<User> userlist = new ArrayList<User> ( );
userlist = db.convertDatabaseToList ( );
Collections.sort (userlist, User.Comparators._id);
StringBuffer buffer = new StringBuffer();
String lastScoreMessage;
for (int i = 0; i < listsize; i++) {
User temp = userlist.get(i);
String username = temp.getName();
int score = temp.getScore();
buffer.append(username + ": " + score + "\n");
}
lastScoreMessage = buffer.toString();
}
protected void showMessage(String title, String message) {
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setCancelable(true);
builder.setTitle(title);
builder.setMessage(message);
builder.show();
}
}
simply create lastScoreMessage in the class instead of method. the problem is the scope of variable is only upto method. first create variable in class. and then store value in method like you did.
You can declare lastScoreMessage as a class variable an the affect it in the lastFive() method or modify the lastFive() method to return the string that you pass to the showMessage() method
String message = lastFive ();
showMessage ("Last 5 Scores", message);
and set the lastFive() method like this
protected String lastFive() {
int listsize = 5;
List<User> userlist = new ArrayList<User> ( );
userlist = db.convertDatabaseToList ( );
Collections.sort (userlist, User.Comparators._id);
StringBuffer buffer = new StringBuffer();
String lastScoreMessage;
for (int i = 0; i < listsize; i++) {
User temp = userlist.get(i);
String username = temp.getName();
int score = temp.getScore();
buffer.append(username + ": " + score + "\n");
}
lastScoreMessage = buffer.toString();
return lastScoreMessage
}
Related
I am querying the android Contact class and able to fetch contact name plus number and able to add multiple textviews in linear layout with number and name of the contact and able to save single textview number value in shared preferences and retrive it, how can I save dynamically adding textviews array of values (phone numbers (strings) in shared preferences. If any one provide sample code it will help me a lot, as I am doing this for the first time, by the way i searched a lot about this topic but no luck.
Here is my code:
public class Cont extends Fragment {
protected static final int PICK_CONTACT = 0;
Button showConts;
TextView[] resultTextView;
ViewGroup addItems;
final int N = 1;
String name;
String cNumber;
String[] array;
String nameContact;
String number;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View contViews = inflater.inflate(R.layout.cont, container, false);
addItems = (LinearLayout) contViews.findViewById(R.id.adds);
showConts = (Button) contViews.findViewById(R.id.opens);
resultTextView = new TextView[N]; //create an empty array;
// create a new textview
for (int i = 0; i < N; i++) {
final TextView rowTextView = new TextView(getActivity());
resultTextView = new TextView[N]; // create an empty array;
addItems.addView(rowTextView);
resultTextView[i] = rowTextView;
if(resultTextView[i] != null ){
resultTextView[i].setText(nameContact+ " "+ cNumber);
}
}
showConts.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
Intent intent = new Intent(Intent.ACTION_PICK, ContactsContract.Contacts.CONTENT_URI);
startActivityForResult(intent, PICK_CONTACT);
}
});
return contViews;
}
#Override
public void onActivityResult(int reqCode, int resultCode, Intent data){
super.onActivityResult(reqCode, resultCode, data);
switch(reqCode)
{
case (PICK_CONTACT):
if (resultCode == Activity.RESULT_OK)
{
Uri contactData = data.getData();
Cursor c = getActivity().managedQuery(contactData, null, null, null, null);
if (c.moveToFirst())
{
String id = c.getString(c.getColumnIndexOrThrow(ContactsContract.Contacts._ID));
String hasPhone = c.getString(c.getColumnIndex(ContactsContract.Contacts.HAS_PHONE_NUMBER));
if (hasPhone.equalsIgnoreCase("1"))
{
Cursor phones = getActivity().getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI,null,
ContactsContract.CommonDataKinds.Phone.CONTACT_ID +" = "+ id,null, null);
phones.moveToFirst();
cNumber = phones.getString(phones.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
//Toast.makeText(getActivity(), cNumber, Toast.LENGTH_SHORT).show();
nameContact = c.getString(c.getColumnIndexOrThrow(ContactsContract.Contacts.DISPLAY_NAME));
for (int i = 0; i < N; i++) {
final TextView rowTextView = new TextView(getActivity());
LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT));
params.setMargins(0,0,0,10);
resultTextView = new TextView[N];
rowTextView.setTextSize(34);
rowTextView.setHeight(140);
rowTextView.setGravity(Gravity.CENTER);
rowTextView.setBackgroundColor(Color.parseColor("#7d3f98"));
rowTextView.setTextColor(Color.WHITE);
//rowTextView.setBackgroundResource(R.drawable.corn);
addItems.addView(rowTextView);
resultTextView[i] = rowTextView;
resultTextView[i].setLayoutParams(params);
if(resultTextView[i] != null ){
resultTextView[i].setText(nameContact+ " "+ cNumber);
}
resultTextView[i].setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
String res1 = rowTextView.getText().toString();
System.out.println("num " + res1.length());
res1 = res1.split(" ")[res1.split(" ").length - 1];
startDialActivity(res1);
}
private void startDialActivity(String result) {
Intent intent = new Intent(Intent.ACTION_CALL);
intent.setData(Uri.parse("tel:"+result));
startActivity(intent);
}
});
}
}
}
}}}}
Try google PreferenceActivity, you don't have to,you can just use the traditional way(SharedPreference sp =new ....)
, but I think SharedPreferenceActivity is very easier, it's native,very simple and powerfull!
You can make a JSONArray and add name and phone number by making JSONObject and add these JSONObjects to the JSONArray.
JSONObject mainObject=null;
try{
mainObject=new JSONObject();
JSONArray arr = new JSONArray();
for (int i = 0; i < 10; i++) {
JSONObject objName = new JSONObject();
JSONObject objPhone = new JSONObject();
objName.put("name", new String("abbcc"));
objPhone.put("phone", new String("dfdfgdf"));
arr.put(i,objName);
arr.put(i,objPhone);
}
mainObject.put("mainObj",arr);
System.out.println(mainObject.toString());
}
catch(Exception e){
}
shared.edit().putString("details",mainObject.toString()).commit();
and then get string from sharedPreferences wherever you want and the get details from JSONObject and JSONArray
I'm preety new on android and trying to write an application but I wrote some code and run on android device till here there is no any problem but when I try to launch query window "sorgulama.xml" application stopped my xml file like this
and my java scource file ( java code ) like this
public class Sorgulama extends Activity implements OnClickListener {
#Override
public void onClick(View v) {
switch(v.getId())
{
case R.id.btnSorgula:
String sorgu = txtSorgu.getText().toString();
Sorgula(sorgu);
break;
case R.id.btnKisaYollar:
KisaYollar();
break;
case R.id.btnTablo:
Tablolar();
break;
}
}
Button btnSorgula, btnKisaYollar, btnTablo;
EditText txtSorgu;
TableLayout tbl;
ResultSetMetaData metaData;
TableRow renkTableRow;
int kolonSayisi = 0, tvId = 0, otoId = 1;
String url,driver,userName ,password;
ArrayList<String> arrayTablolar = new ArrayList<String>();
ArrayList<String> arrayResults = new ArrayList<String>();
#Override
protected void onCreate(Bundle savedInstanceState) {
setContentView(R.layout.sorgulama);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,WindowManager.LayoutParams.FLAG_FULLSCREEN);
setTitle("MSSQL Uygulaması v1.0");
Kontroller();
Ayarlar();
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_USER_LANDSCAPE);
}
private void Ayarlar()
{
DB db = new DB(this);
db.open();
Cursor c = db.Query();
String ipAdresi = null, veriTabaniAdi = null, kullaniciAdi = null, sifre = null;
while(c.moveToNext())
{
ipAdresi = c.getString(c.getColumnIndex("IpAdresi"));
veriTabaniAdi = c.getString(c.getColumnIndex("VeriTabaniAdi"));
kullaniciAdi = c.getString(c.getColumnIndex("KullaniciAdi"));
sifre = c.getString(c.getColumnIndex("Sifre"));
}
url = "jdbc:jtds:sqlserver://" + ipAdresi +";databaseName=" +veriTabaniAdi+"";
driver = "net.sourceforge.jtds.jtbc.Driver";
userName = kullaniciAdi;
password = sifre;
db.close();
}
private void Kontroller()
{
btnSorgula = (Button) findViewById(R.id.btnSorgula);
btnKisaYollar = (Button) findViewById(R.id.btnKisaYollar);
btnTablo = (Button) findViewById(R.id.btnTablo);
txtSorgu = (EditText) findViewById(R.id.txtSorgu);
tbl = (TableLayout) findViewById(R.id.tblSonuc);
btnSorgula.setOnClickListener(this);
btnKisaYollar.setOnClickListener(this);
btnTablo.setOnClickListener(this);
}
private void KisaYollar(){
final CharSequence cs[];
cs = new String[5];
cs[0] = "select";
cs[1] = "*";
cs[2] = "from";
cs[3] = "where";
cs[4] = "and";
cs[5] = "or";
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle("Kısa Yollar").setIcon(R.drawable.logo).setItems(cs, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int item) {
String sorgu = txtSorgu.getText().toString();
txtSorgu.setText(sorgu+cs[item]);
}
});
AlertDialog alert = builder.create();
alert.show();
}
private void Tablolar(){
}
private void Sorgula(String sorgu)
{
}
}
Can anyone help me about this issue pls?
you missed super.onCreate(savedInstanceState). Also
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,WindowManager.LayoutParams.FLAG_FULLSCREEN);
must be called before setContentView
I am creating an app, in which I create some EditTexts dynamically with ID number.
I want to pass the information from the EditTexts, so I tried to create a EditText array with these and then use the .getText().toString() to save them in a String Array, which I want pass to the next activity.
It seems like it won't create the "editArray[]" in second code part correctly.
Thanks in advance.
Here's my code (EnterNames.java) - Creation of EditTexts -> Succesful
protected void NumberOfEditText()
{
View VertLayout = (LinearLayout) findViewById(R.id.VertLayout);
String SpinValue = getIntent().getExtras().getString("SpinValue");
int intSpinValue = Integer.valueOf(SpinValue);
editTextCount = intSpinValue;
EditText[] editTextArray = new EditText[editTextCount];
for (int i = 0; i < editTextCount; i++)
{
String Name = "Name " + (i+1);
editTextArray[i] = new EditText(this);
editTextArray[i].setId(i+1000);
editTextArray[i].setText(Name);
editTextArray[i].setTextSize(20);
editTextArray[i].setFilters( new InputFilter[] { new InputFilter.LengthFilter(15) } );
editTextArray[i].setSelectAllOnFocus(true);
editTextArray[i].setSingleLine(true);
editTextArray[i].setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT,LayoutParams.WRAP_CONTENT));
((LinearLayout) VertLayout).addView(editTextArray[i]);
}
}
Second code (EnterNames.java) - Passing data to next activity -> Failure.
By testing I think the problem is the for-loops (the editArray returns null)
public void Go(View view)
{
setContentView(R.layout.activity_enter_names);
String NameArray [] = new String [editTextCount];
EditText editArray [] = new EditText [editTextCount];
Intent intent = new Intent(this, RandomGeneration.class);
for (int i = 0; i < editTextCount; i++)
{
editArray[i] = (EditText) findViewById(i+1000);
}
for (int i = 0; i < editTextCount; i++)
{
NameArray[i] = editArray[i].getText().toString();
}
Bundle extras = new Bundle();
extras.putInt("NumberofNames", editTextCount);
extras.putStringArray("NameArray", NameArray);
intent.putExtras(extras);
startActivity(intent);
}
According to Activity.findViewById() documentation, this method will search for views in your XML, not in views added in Java.
The simple way to do what you want:
class EnterNames extends Activity {
private int editTextCount;
private EditText[] editTextArray;
protected void NumberOfEditText() {
LinearLayout vertLayout = (LinearLayout) findViewById(R.id.VertLayout);
editTextCount = Integer.valueOf(getIntent().getExtras().getString("SpinValue"));
editTextArray = new EditText[editTextCount];
LayoutParams params = new LayoutParams(LayoutParams.WRAP_CONTENT,LayoutParams.WRAP_CONTENT);
for (int i = 0; i < editTextCount; i++) {
String Name = "Name " + (i+1);
editTextArray[i] = new EditText(this);
editTextArray[i].setText(Name);
editTextArray[i].setTextSize(20);
editTextArray[i].setFilters( new InputFilter[] { new InputFilter.LengthFilter(15) } );
editTextArray[i].setSelectAllOnFocus(true);
editTextArray[i].setSingleLine(true);
editTextArray[i].setLayoutParams(params);
vertLayout.addView(editTextArray[i]);
}
}
[…]
public void Go(View view)
{
// This will delete views added to your LinearLayout, don't use it!
//setContentView(R.layout.activity_enter_names);
String nameArray[] = new String[editTextCount];
for (int i = 0; i < editTextCount; i++) {
nameArray[i] = editArray[i].getText().toString();
}
Bundle extras = new Bundle();
extras.putInt("NumberofNames", editTextCount);
extras.putStringArray("NameArray", nameArray);
Intent intent = new Intent(this, RandomGeneration.class);
intent.putExtras(extras);
startActivity(intent);
}
}
Why you are calling setContentView(R.layout.activity_enter_names); in public void Go(View view)? You overide Activities layout in which you previously has added EditText views and all your findById() returns null.
Your code should work if you remove setContentView(R.layout.activity_enter_names); from Go function.
setContentView(R.layout.activity_enter_names); should be called single time in Activities onCreate function.
I have some problem in updating the values to hash-table,here is my problem i will explain it clearly.
1.I have getting the response from server,i am adding the values to layout,by using layout Layout-Inflater.
2.in our application we have streaming request.when the streaming request is turned on the values need to be updated regularly.
storing values in hash-tables
Hashtable<String, View> indicesHashtable = new Hashtable<String, View>();
For(Step 1)code i have written belowthe code.
private void addIndices(LinearLayout parent, final String key,final String value) {
LayoutInflater factory = LayoutInflater.from(mContext);
final View row = factory.inflate(R.layout.indices_values, null);
final TextView keyTextView = (TextView) row.findViewById(R.id.txtCompany);
final TextView valueTextView = (TextView) row.findViewById(R.id.txtIndex);
final Button iconImageView = (Button) row.findViewById(R.id.btnIcon);
row.setBackgroundResource(android.R.drawable.list_selector_background);
if (value.length() > 0) {
keyTextView.setText(Html.fromHtml("<b>"+indices.get(key)+"</b>"));
valueTextView.setText(Html.fromHtml(value));
if(quoteArrowIconId != -1)
iconImageView.setBackgroundResource(quoteArrowIconId);
else
iconImageView.setBackgroundDrawable(null);
}else{
keyTextView.setText(Html.fromHtml(key));
}
indicesHashtable.put(key, row);
parent.addView(row);
}
For(Step 2)i need help from you guys.
i have written code..that i have shown below.
private void handleResponseOfResponses(ResponseParser response) {
Hashtable responses = (Hashtable) response.getValue(Response_890.RESPONSES);
String[] symbols = new String[responses.size()];
int index = 0;
indicesHashtable.clear();
for(int i =indicesSymbols.length-1; i >= 0; i--){
Enumeration e = responses.keys();
while (e.hasMoreElements()) {
ResponseParser subResponse = (ResponseParser) responses.get(e.nextElement());
if (subResponse.getResponseCode() == ResponseCodes.QUOTES_RESPONSE) {
String[] quoteProperties = (String[]) subResponse.getValue(Response_312.QUOTES_KEY);
if(quoteProperties[0].equalsIgnoreCase(indicesSymbols[i])){
// symbolTable.put(quoteProperties[0].toUpperCase(), index);
symbols[index++] = quoteProperties[0];
String value = quoteValue(quoteProperties);
For displaying the values coming for response i have added (AddIndices)method
addIndices(linear_Indices, quoteProperties[0], value);
}
}
}
}
autoscroll();
indicesStreamerClient = new StreamerClient(indicesSymbols){
#Override
public void onStreamDataReceived(QuoteData quoteData) {
System.out.println("onStreamDataReceived () -> "+quoteData.getSymbol());
HERE I NEED TO ADDED ANOTHER METHOD FOR UPDATING THE VALUES..HOW I CAN WRITE THE CODE.
};
};
Streamer.getInstance(mContext).registerStramerClient(indicesStreamerClient);
}
Guys i am fresher as well as new to andriod.
Thanks in advance!!!!!!
I have a function to find an employee's id number from my sqlite database. The function allows the user to look up by id or name (first and/or last); therefore it creates several dialog boxes and finds the data through an If Else Then tree. Here's the code for those who like that sort of thing:
public String getEmployeeID() {
final CharSequence[] items = {"By ID", "By Name", "Cancel"};
AlertDialog.Builder builder = new AlertDialog.Builder(LibraryScreen.this);
builder.setTitle("Find Employee");
builder.setSingleChoiceItems(items, -1, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int item) {
if(items[item].equals("Cancel")) {
dialog.cancel();
empid = "";
} else if(items[item].equals("By ID")) {
dialog.cancel();
final Dialog dialog2 = new Dialog(LibraryScreen.this);
dialog2.setContentView(R.layout.peopledialog);
dialog2.setTitle("Employee ID");
dialog2.setCancelable(true);
//Set Visibility of the Rows
TableRow tblrow1 = (TableRow) dialog2.findViewById(R.id.trGeneral);
tblrow1.setVisibility(0);
//Set Captions for Rows
TextView txtvw1 = (TextView) dialog2.findViewById(R.id.tvGeneral);
txtvw1.setText("Employee ID");
//Set Up Edit Text Boxes
EditText edttxt1 = (EditText) dialog2.findViewById(R.id.txtGeneral);
//Set Input Type
edttxt1.setRawInputType(0x00000002);//numbers
edttxt1.setText("");
//set max lines
edttxt1.setMaxLines(1);
//Set MaxLength
int maxLength;
maxLength = 15;
InputFilter[] FilterArray = new InputFilter[1];
FilterArray[0] = new InputFilter.LengthFilter(maxLength);
edttxt1.setFilters(FilterArray);
Button button = (Button) dialog2.findViewById(R.id.btnTxtDiaSav);
button.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
EditText emplid = (EditText) dialog2.findViewById(R.id.txtGeneral);
String newemp = "";
db.open();
Cursor c = db.getEmployee(emplid.getText().toString());
if(c.moveToFirst()) {
empid = c.getString(c.getColumnIndex("employeeid"));
} else {
Toast.makeText(LibraryScreen.this, "No ID Match", Toast.LENGTH_LONG).show();
empid = "";
}
c.close();
db.close();
dialog2.dismiss();
}
});
Button buttonCan = (Button) dialog2.findViewById(R.id.btnTxtDiaCan);
buttonCan.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
dialog2.dismiss();
empid = "";
}
});
dialog2.show();
} else if(items[item].equals("By Name")) {
dialog.cancel();
final Dialog dialog1 = new Dialog(LibraryScreen.this);
dialog1.setContentView(R.layout.peopledialog);
dialog1.setTitle("Employee's Name");
dialog1.setCancelable(true);
//Set Visibility of the Rows
TableRow tblrow1 = (TableRow) dialog1.findViewById(R.id.trGeneral);
tblrow1.setVisibility(0);
//Set Captions for Rows
TextView txtvw1 = (TextView) dialog1.findViewById(R.id.tvGeneral);
txtvw1.setText("Employee Name");
//Set Up Edit Text Boxes
EditText edttxt1 = (EditText) dialog1.findViewById(R.id.txtGeneral);
//Set Input Type
edttxt1.setRawInputType(0x00002001);//cap words
edttxt1.setText("");
//set max lines
edttxt1.setMaxLines(1);
//Set MaxLength
int maxLength;
maxLength = 50;
InputFilter[] FilterArray = new InputFilter[1];
FilterArray[0] = new InputFilter.LengthFilter(maxLength);
edttxt1.setFilters(FilterArray);
Button button = (Button) dialog1.findViewById(R.id.btnTxtDiaSav);
button.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
EditText emplid = (EditText) dialog1.findViewById(R.id.txtGeneral);
String firstname = emplid.getText().toString();
String lastname = "";
String matchlist = "";
String temptext = "";
int matchcount = 0;
if(firstname.lastIndexOf(" ") <= 0) {
lastname = firstname;
firstname = "X";
} else {
lastname = firstname.substring(firstname.lastIndexOf(" ") + 1);
firstname = firstname.substring(0, firstname.lastIndexOf(" "));
}
db.open();
Cursor c1, c2;
String titletext = "";
if(firstname.length() > 0) {
c1 = db.getEmployeeByName(lastname, firstname);
if(c1.getCount() == 0) {
c1 = db.getRowByFieldTextOrdered("employees", "lastname", lastname, "lastname, firstname");
if(c1.getCount() == 0) {
Toast.makeText(LibraryScreen.this, "No matching Employees.", Toast.LENGTH_LONG).show();
empid = "";
}
}
if(c1.getCount() > 0) {
do {
c2 = db.getRowByField("orgcodes", "manager", c1.getString(c1.getColumnIndex("employeeid")));
if(c2.moveToFirst()) {
if(c2.getString(c2.getColumnIndex("orgcode")).substring(9, 10).equals("0")) {
if(c2.getString(c2.getColumnIndex("orgcode")).substring(7, 8).equals("0")) {
if(c2.getString(c2.getColumnIndex("orgcode")).substring(5, 6).equals("0")) {
if(c2.getString(c2.getColumnIndex("orgcode")).substring(4, 5).equals("0")) {
if(c2.getString(c2.getColumnIndex("orgcode")).substring(3, 4).equals("0")) {
titletext = "Top Brass";
} else {
titletext = "Senior VP";
}
} else {
titletext = "VP";
}
} else {
titletext = "Director";
}
} else {
titletext = "Senior Manager";
}
} else {
titletext = "Manager";
}
} else {
titletext = "Employee";
}
matchcount++;
matchlist = matchlist + c1.getString(c1.getColumnIndex("employeeid")) + ": " + c1.getString(c1.getColumnIndex("firstname")) + " " + c1.getString(c1.getColumnIndex("lastname")) + ": " + titletext + "|";
} while(c1.moveToNext());
}
} else {
empid = "";
}
if(matchcount == 0) {
db.close();
Toast.makeText(LibraryScreen.this, "No matching Employees.", Toast.LENGTH_LONG).show();
empid = "";
} else {
final CharSequence[] items = new CharSequence[matchcount + 1];
items[0] = "(Cancel)";
for(int i = 1; i <= matchcount; i++) {
items[i] = matchlist.substring(0, matchlist.indexOf("|"));
matchlist = matchlist.substring(matchlist.indexOf("|") + 1);
}
db.close();
AlertDialog.Builder builder1 = new AlertDialog.Builder(LibraryScreen.this);
builder1.setTitle("Select Employee");
builder1.setSingleChoiceItems(items, -1, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int item) {
if(items[item].equals("(Cancel)")) {
dialog.cancel();
empid = "";
} else {
String wasted = items[item].toString();
empid = wasted.substring(0, wasted.indexOf(":"));
dialog.cancel();
}
}
});
AlertDialog alert1 = builder1.create();
alert1.show();
}
dialog1.dismiss();
}
});
Button buttonCan = (Button) dialog1.findViewById(R.id.btnTxtDiaCan);
buttonCan.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
dialog1.dismiss();
empid = "";
}
});
dialog1.show();
}
}
});
AlertDialog alert = builder.create();
alert.show();
return empid;
}
I use the employee id for a variety of functions through multiple activities in my program. Up to now, I've simply pasted the code under each listener that needs the id, but that is such a waste of space IMHO.
My question:
Is there a way to put this function somewhere that can be called from many different activities?
If so:
How do I do that?
How do I set the context for the dialog boxes for multiple activities?
How do I get the employee id back to the function that needs it?
I'm sure this has been asked before, but I haven't been able to find it online: actually, I'm not even sure how to word the query right. My attempts have come up woefully short.
A little late to the party - but recorded for posterity:
Read up on the Application class:
Base class for those who need to maintain global application state.
You can provide your own implementation by specifying its name in your
AndroidManifest.xml's tag, which will cause that class
to be instantiated for you when the process for your
application/package is created.
Basically, this would give you the ability to obtain a single object that represents your running application (think of it as a singleton that returns an instance of your running app).
You first start off by creating a class that extends Application base class and defining any common code that is used throughout your application
import android.app.Application;
public class MyApplication extends Application {
public void myGlobalBusinessLogic() {
//
}
}
Then tell your application to use the MyApplication class instead of the default Application class via the <application> node in your app manifest:
<application android:icon="#drawable/icon" android:label="#string/app_name"
android:name="MyApplication">
Finally, when you need to get to your common function just do something like:
MyApplication application = (MyApplication) getApplication();
application.myGlobalBusinessLogic();
If you need to get the context from any part of your application, you can simple return it by calling getApplicationContext() (defined in the base Application class) via a getter method within your custom application class.