Develop Reference

Add a value to a list everytime the user answers correctly

I have a code written where a user has to answer a question true or false. What I want to do is everytime when a user answers correctly I add +1 to my arraylist. And then at the end of the game I display the number of answered questions. I tried to do it my way, however I get an error.
Here is how I create my list:
final ArrayList<Integer> points = new ArrayList<Integer>();
This is the button if the user presses True(For better understanding: When a user presses true a pop up window opens with the answer correct or false and the correct answer of the question. When the user clicks on the closepopup button an if method runs and checks if he pressed the right button and if its not the last question. If not, it shows the next question and adds the +1 to the list):
mYes.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
initiatePopupWindow();
if(type.get(count[0])){
((TextView)pwindo.getContentView().findViewById(R.id.popupTekstasTiesaArNe)).setText("Correct!");
} else {
((TextView)pwindo.getContentView().findViewById(R.id.popupTekstasTiesaArNe)).setText("False!");
}
//Show the first answer on first button click.
((TextView)pwindo.getContentView().findViewById(R.id.popupTekstas)).setText(questions.get((count[0]) % questions.size()).answer);
// When PopUp button closes open the next question with the if/else conditions.
btnClosePopup.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
//if the question is true show next question/ else close app
if (type.get(count[0])) {
points.add(1); // if the answer is correct add +1 to the list.
if(questions.size()-1 == count[0]) // if you count[0] is init to 0
{
AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);
builder.setTitle("WInner");
builder.setMessage("You won, play again?");
builder.setCancelable(false);
builder.setPositiveButton(android.R.string.yes,
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
// just close dialog
dialog.cancel();
}
});
builder.setNegativeButton(android.R.string.no,
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
finish();
mResult.setText(points.size());// here I try to print the number of answered questions.
}
});
// Create dialog from builder
AlertDialog alert = builder.create();
// Show dialog
alert.show();
count[0]=0;
}
else if(questions.size()-1 < count[0])
try {
throw new Exception("Invalid ");
} catch (Exception e) {
e.printStackTrace();
}
else
count[0]++;
mQuestion.setText(questions.get(count[0]).question); // you dont need calculate the module anymore
pwindo.dismiss();
} else {
count[0]++;
mQuestion.setText(questions.get(count[0]).question); // you dont need calculate the module anymore
pwindo.dismiss();
}
}
});
}
});
EDITED!!!
I figured out why SetText shows a blank textview. I want to show the answered question count in activity before the questions. I have a menuActivity>LevelselectActivity>GameActivity. In game activity I add to the list values. How to post them in LevelselectActivity? Should I use shared preferences? I have no idea now..

Return Boolean value from Android AlertDialog function

In my app i have a function that checks the entered text from a displayed AlertDialog with an input text. If the text is equal to a string variable, return True, else return False, and catch this resulting value to continue conditional code.
But it seems its a little difficult to do this as i've read in other posts asking how to solve the same problem.
I've already done this:
private boolean checkAdministratorPassword() {
final enterPasswordResult[0] = false;
AlertDialog.Builder alert = new AlertDialog.Builder(mContext);
alert.setTitle("Confirm action");
alert.setIcon(R.drawable.ic_launcher);
alert.setMessage("Enter administrator pass to continue");
final EditText input = new EditText(mContext);
input.setPadding(5, 0, 5, 0);
alert.setView(input);
alert.setPositiveButton("Accept", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int whichButton) {
String strPass = input.getEditableText().toString();
if (strPass.length() == 0) {
dialog.cancel();
}
if (strPass.equalsIgnoreCase(Constantes.ADMIN_PASS)) {
enterPasswordResult[0] = true;
dialog.cancel();
} else {
Toast.makeText(mContext, "Invalid pass..!!", Toast.LENGTH_LONG).show();
dialog.cancel();
}
}
});
alert.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int whichButton) {
dialog.cancel();
}
});
AlertDialog alertDialog = alert.create();
alertDialog.show();
return enterPasswordResult[0];
}
And i call the function this way:
If ( checkAdministratorPassword() == True ){
//true conditions
}
But the problem is that the check function doesnt wait for the result to continue with the code, it just continue by itself and i dont get the appropiate behavior.

The issue is you're trying to handle an async event in the logcal flow of your program. You can do this if you make the Dialog it's own class and use an Interface to callback to your host activity. Check out the documentation on DialogFragment.
public interface PasswordCheckListener{
public void valid(boolean check);
}
private static class PasswordDialog extends DialogFragment {
private PasswordCheckListener listener;
public static PaswordDialog newInstance(PasswordCheckListener listener){
this.listener = listener;
}
#Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
//Put your dialog creation code here
}
private checkAdminPassword(){
//Whatever your check passowrd code is
listener.valid(result);
}
}
I realize I didn't implement all the code for you but that's the general idea. By using an interface you can call back to your host Activity or Fragment when the user enters the password and presses submit. You can then handle the event as it happens, rather than having to deal with it in your program flow.

Thank you all for your answers!! i've found the right way to achieve this problem by creating an Activity whith theme "Theme.Dialog", an input text and two buttons (Accept, Cancel), i start this activity for result asking the user to enter the administrator pass to continue, checking the string and then returning again to onActivityResult() from previous activity with the correct information to proceed.

Displaying alert dialog only after a specific activity page

I have a login page.When the user logs in correctly,I want to show an alert dialog saying that your login details have been verified.Click continue to proceed.Now I want this alert dialog to be shown on the next activity page after login.
Here is the alert dialog code-:
SharedPreferences settings = getSharedPreferences(PREFS_NAME, 0);
boolean dialogShown = settings.getBoolean("dialogShown", false);
if (!dialogShown) {
AlertDialog.Builder builder = new Builder(Myperwallet.this);
builder.setTitle("Fast Cashier!");
builder.setMessage("Logging In");
builder.setPositiveButton("Continue", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
dialog.cancel();
//continue activity here....
}
});
builder.create().show();
// AlertDialog code here
}
SharedPreferences.Editor editor = settings.edit();
editor.putBoolean("dialogShown", true);
editor.commit();
I tried this but now alert dialog won't display after I have logged out.I need to know how can I set the flag to true when I have pressed the logout button.Here is my logout button functionality-:
logout.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
AlertDialog alertDialog = new AlertDialog.Builder(Myperwallet.this).create();
alertDialog.setTitle("FastCashier:");
alertDialog.setMessage("Are you sure you want to exit?");
alertDialog.setButton( Dialog.BUTTON_POSITIVE, "Yes", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
Intent logout = new Intent(Myperwallet.this,Login.class);
startActivity(logout);
}
});
alertDialog.setButton( Dialog.BUTTON_NEGATIVE, "NO", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
dialog.cancel();
}
});
alertDialog.show();
}
});

You need to add some implementation to your current code.
You can keep a flag in sharedPrefs and initially it would be true. After showing it for first time make it false.
This is what you must have implemented right now.
So to show it again after logout reset the flag to true when user has logged out. So again when u reach to the activity the dialog would be shown.

actually could not get Under stood more issue, but you want show your AlertDialog in some Optionnale Requirement such as when Login then it show and in next page is Required but due to SharedPreferences displayed only once at the start of the application. When I logged out and then logged in I did not get any alert dialog
SharedPreferences what do do is store your specific Sting with key and you need to match with it. after loing suceessufully you need to Update SharedPreferences with some new String and need to match with it.
also You can use File to check isExit() or not and write require Sting it and Read it and match with you require condition to show alert dialog. this may Helps you.

keep track of the activity flow ,i.e when u start your application it is doing what so ever is in onCreate method ,for ur problem set flag in the on create method ,and when u switch from any other activity to this one implement the method on Restart() and clear ur previous data ....
like this...
protected void onRestart() {
// TODO Auto-generated method stub
super.onRestart();
//ur code
}
hope it will be helpful,

Show Alert Dialog from Activity after activity returned result from a Fragment

The title might not be very clear, its kind of hard to explain in a short title. But here is the problem.
I have an activity, MainActivity which then shows an activity at start to show FragmentA. In MainActivity there is a menu that is shown which is accessible via FragmentA. From the menu in FragmentA the user clicks on Generate Password which then calls another activity called GeneratePassword called using startActivityForResult. When the user presses the submit button the user is then sent back to FragmentA and the function onActivityResult within the MainActivity. Within this function, I then make use of a common class which allows me to show an AlertDialog with Yes and No Buttons. OnActivityResult works fine if I take out the common.showYesNoDialog() if statement, but when this is being used I get an exception
android.view.WindowManager$BadTokenException: Unable to add window -- token null is not for an application
Below is the code that starts the GeneratePassword Activity
Intent generatePasswrodIntent = new Intent(mMainActivity, GeneratePassword.class);
startActivityForResult(generatePasswrodIntent, AddNewLogin.GENERATE_PASSWORD);
return(true);
Below is the code that sets the result from the GeneratePassword activity
Intent intent = new Intent();
Bundle bundle = new Bundle();
bundle.putString("password", generatePassword.generatePassword());
intent.putExtras(bundle);
setResult(AddNewLogin.GENERATE_PASSWORD, intent);
finish();
Below is the code from the onActivityResult that shows the alert dialog
Bundle bundle = data.getExtras();
String password = bundle.getString("password");
Log.d("PASSWORD", password);
if (common.showYesNoDialog("Your Generated Password Is:\n " + password + "\nDo you want to copy this to the clipboard?", false))
{
ClipboardManager clipboard = (ClipboardManager)getSystemService(CLIPBOARD_SERVICE);
clipboard.setText(password);
}
Below is the YesNoDialog function, but I know this works fine as I have used it in several places within my app without problem.
final Handler handler = new Handler()
{
#Override
public void handleMessage(Message mesg)
{
throw new RuntimeException();
}
};
AlertDialog.Builder builder = new AlertDialog.Builder(context);
builder.setCancelable(isCancelable);
builder.setMessage(message)
.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
dialogResult = true;
handler.sendMessage(handler.obtainMessage());
}
})
.setNegativeButton("No", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
dialogResult = false;
handler.sendMessage(handler.obtainMessage());
}
});
AlertDialog alert = builder.create();
alert.show();
try
{
Looper.loop();
}
catch (RuntimeException ex)
{
Log.d("Dialog Error", ex.toString());
}
return dialogResult;
And below is how I am initialising the common class
Common common = new Common(getApplicationContext());
Instead of getApplicationContext, I've tried using this but doesn't make any difference.
I just don't understand what is happening here.
Thanks for any help you can provide

The problem is in your showYesNoDialog(). What does the boolean parameter for your showYesNoDialog() method do?

How to transfer parameters value from dialog box to activity in android?

I have an activity (Main) and I inserted a button in it.
When button the user press it, a dialog box with 2 Radio boxes appear. I want to set "1" or "0" value to "ntv", based on which radiobutton is selected, and then use "ntv" value in Main activity, but it seems that this doesnot transfer "ntv" value to Main activity, what is wrong with my code?
final CharSequence[] chan = {"Minutes", "Seconds"};
builder = new AlertDialog.Builder(Main.this);
builder.setTitle("Please Select:");
builder.setSingleChoiceItems(chan, 0, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int item) {
if(chan[item]=="Minutes")
{
Toast.makeText(getApplicationContext(), "Minutes", Toast.LENGTH_SHORT).show();
ntv="1";
}
else if (chan[item]=="Seconds")
{
Toast.makeText(getApplicationContext(), "Seconds", Toast.LENGTH_SHORT).show();
ntv="0";
}
}
});
AlertDialog alert = builder.create();
alert.show();
I defined "ntv" as string and this is part of code when "ntv" is compared to check if it is "0" or "1"
ImageView set1= (ImageView) findViewById(R.id.set1);
ImageView set2= (ImageView) findViewById(R.id.set2);
if (ntv.equals("0")) {
set1.setVisibility(View.INVISIBLE);
}
if (ntv.equals("1")) {
set2.setVisibility(View.INVISIBLE);
}
and because neither (set1) nor (set2) doesnot go invisible I realize that "ntv" have no value.

This all looks OK (except the suggestion to use equals() instead of == for the string compares, although, as you say, it does work (it just isn't good practice).
The only thing I can think of (without seeing all the code) is that the scope of variable ntv is wrong. Have you declared the variable inside a method? It needs to be defined as an instance variable in your class (ie: not within a method).

you should be doing .equals on the string comparison NOT ==
It is unlikely that your if statements will trigger because of this.
if(chan[item].equals("Minutes"))
{
Toast.makeText(getApplicationContext(), "Minutes", Toast.LENGTH_SHORT).show();
ntv="1";
}
else if (chan[item].equals("Seconds"))
{
Toast.makeText(getApplicationContext(), "Seconds", Toast.LENGTH_SHORT).show();
ntv="0";
}

it's not clear the complete code you use and how you call the code that change visibility. Below an example
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
AlertDialog.Builder builder;
final CharSequence[] chan = {"Minutes", "Seconds"};
builder = new AlertDialog.Builder(MainActivity.this);
builder.setTitle("Please Select:");
builder.setSingleChoiceItems(chan, 0, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int item) {
if(chan[item].equals("Minutes")) {
showToast("Minutes");
} else if (chan[item].equals("Seconds")) {
showToast("Seconds");
}
}
});
AlertDialog alert = builder.create();
alert.show();
}
private void showToast(String s){
Toast.makeText(getApplicationContext(), s, Toast.LENGTH_SHORT).show();
}
instead of showToast function you can use a your function to change visibility