Develop Reference

Customizing my alertbox using inflater doesn't work

I am a beginner to Android Studio. I am working on my android quiz application for our school activity. The code shown below is what i have to check if my answer in my true or false question is correct. I want to display a custom AlertBox, but it doesn't work.The app stops and goes back its previous activity. I tried to change it to the default alertbox. It works fine, but if I add inflater it doesn't work. What is wrong with my code?
public void checkAnswer(View view) {
// Get pushed button.
Button answerBtn = (Button) findViewById(view.getId());
String btnText = answerBtn.getText().toString();
TextView title = (TextView) view.findViewById(R.id.title);
ImageButton imageButton = (ImageButton)
view.findViewById(R.id.image);
TextView laman = (TextView) view.findViewById(R.id.laman);
if (btnText.equals(rightAnswer)) {
// Correct!
startService(new Intent(roxasquiz.this, tamamusic.class));
imageButton.setImageResource(R.drawable.check);
title.setText("Magaling!");
laman.setText("Tama ang iyong sagot! ");
rightAnswerCount++;
} else {
// Wrong...
startService(new Intent(roxasquiz.this, malimusic.class));
title.setText("Magsanay pa!");
laman.setText("Mali ang iyong sagot! ");
imageButton.setImageResource(R.drawable.wrong);
}
// Create Dialog.
AlertDialog.Builder builder = new AlertDialog.Builder(this);
LayoutInflater inflater = getLayoutInflater();
View v = inflater.inflate(R.layout.custom_layout, (ViewGroup) view, false);
builder.setPositiveButton("OK", new
DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialogInterface, int i) {
if (quizCount == QUIZ_COUNT) {
// Show Result.
Intent intent = new Intent(getApplicationContext(), roxasresult.class);
intent.putExtra("RIGHT_ANSWER_COUNT", rightAnswerCount);
startActivity(intent);
} else {
quizCount++;
showNextQuiz();
}
}
});
builder.setView(v);
builder.setCancelable(false);
builder.show();
}
Here is the code that is written before the codes above.
public class roxasquiz extends AppCompatActivity {
private TextView timer;
private TextView countLabel;
private TextView questionLabel;
private Button answerBtn1;
private Button answerBtn2;
private String rightAnswer;
private int rightAnswerCount = 0;
private int quizCount = 1;
static final private int QUIZ_COUNT = 3;
ArrayList<ArrayList<String>> quizArray = new ArrayList<>();
String quizData[][] = {
// {"Question", "Right Answer", "Choice1", "Choice2", "Choice3"}
{"Sa loob ng 10 taon naging speaker of the House si Manuel Roxas. ",
"MALI", "TAMA", },
{"Nagtapos ng abogasya si Manuel Roxas sa University of Santo
Tomas.", "MALI", "TAMA",},
{"Sa lalawigan ng Tarlac ipinanganak si Manuel Roxas. ", "MALI",
"TAMA", },
};
#Override
protected void onCreate(Bundle savedInstanceState) {
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
super.onCreate(savedInstanceState);
setContentView(R.layout.rizaltruefalse);
stopService(new Intent(roxasquiz.this, BackgroundSoundService.class));
countLabel = (TextView)findViewById(R.id.countLabel);
questionLabel = (TextView)findViewById(R.id.questionLabel);
answerBtn1 = (Button)findViewById(R.id.answerBtn1);
answerBtn2 = (Button)findViewById(R.id.answerBtn2);
timer = (TextView)findViewById(R.id.timerlabel);
timer = (TextView)findViewById(R.id.timerlabel);
startService(new Intent(roxasquiz.this, timer.class));
new CountDownTimer(61000, 1000) {
public void onTick(long millisUntilFinished) {
timer.setText("Oras:" + millisUntilFinished / 1000);
}
public void onFinish() {
timer.setText("TAPOS NA!");
timeUp();
}
private void timeUp() {
stopService(new Intent(roxasquiz.this, tamamusic.class));
stopService(new Intent(roxasquiz.this, malimusic.class));
AlertDialog.Builder builder = new AlertDialog.Builder(
roxasquiz.this);
builder.setTitle("Tapos na ang oras!")
.setCancelable(false)
.setNeutralButton(android.R.string.ok,
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog,
int id) {
Intent intent = new
Intent(getApplicationContext(), roxasresult.class);
intent.putExtra("RIGHT_ANSWER_COUNT",
rightAnswerCount);
startActivity(intent);
}
});
AlertDialog alert = builder.create();
alert.show();
}
}.start();
// Create quizArray from quizData.
for (int i = 0; i < quizData.length; i++) {
// Prepare array.
ArrayList<String> tmpArray = new ArrayList<>();
tmpArray.add(quizData[i][0]); // Country
tmpArray.add(quizData[i][1]); // Right Answer
tmpArray.add(quizData[i][2]); // Choice1
// Add tmpArray to quizArray.
quizArray.add(tmpArray);
}
showNextQuiz();
}
public void showNextQuiz() {
// Update quizCountLabel.
countLabel.setText("Tanong " + quizCount);
// Generate random number between 0 and 14 (quizArray's size - 1).
Random random = new Random();
int randomNum = random.nextInt(quizArray.size());
// Pick one quiz set.
ArrayList<String> quiz = quizArray.get(randomNum);
// Set question and right answer.
// Array format: {"Country", "Right Answer", "Choice1", "Choice2",
"Choice3"}
questionLabel.setText(quiz.get(0));
rightAnswer = quiz.get(1);
// Remove "Country" from quiz and Shuffle choices.
quiz.remove(0);
answerBtn1.setText("TAMA");
answerBtn2.setText("MALI");
quizArray.remove(randomNum);
}
This is my code to make it a default alertbox and it works fine.
Button answerBtn = (Button) findViewById(view.getId());
String btnText = answerBtn.getText().toString();
String alertTitle;
String laman;
if (btnText.equals(rightAnswer)) {
// Correct!
startService(new Intent(roxasquiz.this, tamamusic.class));
alertTitle = "Magaling!";
laman = "Tama ang iyong sagot";
rightAnswerCount++;
} else {
// Wrong...
alertTitle = "Magsanay pa!";
laman = "Mali ang iyong sagot";
}
// Create Dialog.
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle(alertTitle);
builder.setMessage(laman);
builder.setPositiveButton("OK", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialogInterface, int i) {
if (quizCount == QUIZ_COUNT) {
// Show Result.
Intent intent = new Intent(getApplicationContext(), roxasresult.class);
intent.putExtra("RIGHT_ANSWER_COUNT", rightAnswerCount);
startActivity(intent);
} else {
quizCount++;
showNextQuiz();
}
}
});
builder.setCancelable(false);
builder.show();
}

AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(this);
LayoutInflater inflater = this.getLayoutInflater();
View dialogView = inflater.inflate(R.layout.alert_label_editor, null);
dialogBuilder.setView(dialogView);
AlertDialog alertDialog = dialogBuilder.create();
alertDialog.show();

How to make a Edit-text box in set error message using without toast ( Alter dialog box ) using Android?

Hey every one has i am create rename application in android ,I will set a Edit-text box in set error message using without toast using Alert Dialog box
Sample Code :
AlertDialog.Builder alert = new AlertDialog.Builder(getActivity());
alert.setTitle(R.string.rename_title);
folderManager = new FolderManager(getActivity());
folderManager.open();
Cursor c = folderManager.queryAll(itemPos);
if (c.moveToFirst()) {
do {
Newnamefolder = c.getString(1);
} while (c.moveToNext());
}
// Set an EditText view to get user input
final EditText input = new EditText(getActivity());
input.setText(Newnamefolder);
alert.setView(input);
alert.setPositiveButton(R.string.rename_position_button, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int whichButton)
{
Newnamefolder = input.getText().toString();
String Mesage_one = getResources().getString(R.string.folder_already_exit);
String Mesage_two = getResources().getString(R.string.types_minimum_eight_charcter);
String Mesage_three = getResources().getString(R.string.folder_empty);
String Matchnamerename = folderManager.getmatchfoldername(Newnamefolder);
if(Newnamefolder.equals(Matchnamerename))
{
input.setError(Mesage_one);
}
else if(Newnamefolder.length()>12)
{
input.setError(Mesage_two);
}
else if(Newnamefolder.equals(""))
{
input.setError(Mesage_three);
}
else
{
int newfolder = folderManager.update(itemPos,Newnamefolder);
reload();
}
}
});
alert.show();
But the problem once in click the OK button Don't show error message to exit the Alert Dialog box...
give me any solution ... Friends ?

You can extend Dialog and create your own dialog
public class CustomDialog extends Dialog implements View.OnClickListener {
private boolean success = false;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.custom_dialog);
Button positive = (Button) findViewById(R.id.button_positive);
Button negative = (Button) findViewById(R.id.button_negative);
EditText field = (EditText) findViewById(R.id.field);
positive.setOnClickListener(this);
negative.setOnClickListener(this);
}
#Override
public void onClick(View v) {
switch(v.getId()) {
case R.id.button_positive:
onPositiveButtonClicked();
break;
case R.id.button_negative:
//onNegativeButtonClicked();
break;
}
}
private void onPositiveButtonClicked() {
if(verifyForm()) {
success = true;
dismiss();
}
}
public boolean isSuccess() {
return success;
}
private boolean verifyForm() {
boolean valid = true;
/* verify each field and setError() if not valid */
if(!TextUtils.isEmpty(field.getText())) { //or any other condition
valid = false;
field.setError("error message");
}
return valid;
}
}
You can show your CustomDialog like this
final CustomDialog customDialog = new CustomDialog();
dialog.setOnDismissListener(new DialogInterface.OnDismissListener() {
#Override
public void onDismiss(DialogInterface dialog) {
if(customDialog.isSuccess()) {
//update your folder manager
}
}
}
customDialog.show();

EditText getText() returns empty string

I have an activity with a button, when the user clicks on the button, an AlertDialog appear with 2 EditText where you put email and password to login.
When I try to get the text from the EditText i always get only empty strings.
The layout login_alert is the layout of the AlertDialog.
Here the code:
View view = getLayoutInflater().inflate(R.layout.login_alert, null, false);
String email = ((EditText) view.findViewById(R.id.emailEditText)).getText().toString();
String password = ((EditText) view.findViewById(R.id.passwordEditText)).getText().toString();
System.out.println("DEBUG: "+email+", "+password); // Empty strings
EDIT:
Activity code:
public class MainActivity extends FragmentActivity {
public static final String mAPP_ID = "...";
public static final String USER_DB_URL = "...";
AssetsExtracter mTask;
private MainFragment mainFragment;
private List<User> usersList = new ArrayList<User>();
private User currentUser = null;
private Button labLoginButton;
private EditText emailET;
private EditText passwordET;
private ProgressDialog dialog;
private View alertView; /* THIS IS THE SOLUTION */
boolean userIsLogged = false;
static {
IMetaioSDKAndroid.loadNativeLibs();
}
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
setContentView(R.layout.activity_main);
/*View view = getLayoutInflater().inflate(R.layout.login_alert, null, false); BEFORE*/
alertView = getLayoutInflater().inflate(R.layout.login_alert, null, false);
emailET = (EditText) view.findViewById(R.id.emailEditText);
passwordET = (EditText) view.findViewById(R.id.passwordEditText);
labLoginButton = (Button) findViewById(R.id.loginLabButton);
updateLoginButton();
dialog = new ProgressDialog(this);
dialog.setMessage("Signin in...");
if (savedInstanceState == null) {
// Add the fragment on initial activity setup
mainFragment = new MainFragment();
getSupportFragmentManager().beginTransaction()
.add(android.R.id.content, mainFragment).commit();
} else {
// Or set the fragment from restored state info
mainFragment = (MainFragment) getSupportFragmentManager()
.findFragmentById(android.R.id.content);
}
mTask = new AssetsExtracter();
mTask.execute(0);
}
/* THIS METHOD IS CALLED BY THE LOGIN BUTTON IN THE MAIN ACTIVITY LAYOUT */
public void onLabLoginButtonClick(View v) {
if (userIsLogged) {
currentUser = null;
userIsLogged = false;
updateLoginButton();
Toast.makeText(this, "Disconnected from Lab", Toast.LENGTH_SHORT)
.show();
} else {
/*View messageView = getLayoutInflater().inflate(
R.layout.login_alert, null, false); BEFORE */
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setIcon(R.drawable.icon_launcher);
builder.setTitle(R.string.login_string);
builder.setView(alertView); /* USING THE GLOBAL VARIABLE */
builder.setPositiveButton("Sign me", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface d, int which) {
dialog.show();
// Download user and return a List of User
DownloadFilesAsyncTask task = new DownloadFilesAsyncTask(USER_DB_URL) {
#Override
protected void onPostExecute(final List<User> result) {
usersList = result;
loginCheckRoutine(); //HERE I MANAGE THE LOGIN AND GETTING EMPTY STRING
}
};
task.execute();
}
});
builder.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
}
});
builder.create();
builder.show();
}
}
public void updateLoginButton() {
if (userIsLogged) {
labLoginButton.setText(R.string.logout_string);
} else {
labLoginButton.setText(R.string.login_string);
}
}
public void loginCheckRoutine() {
String email = emailET.getText().toString();
String password = passwordET.getText().toString();
System.out.println("DEBUG: " + email + ", " + password); // EMPTY
// controllo nella lista se c'è l'utente coi dati inseriti
for (int i = 0; i < usersList.size(); i++) {
if (usersList.get(i).getEmail().equals(email)
&& password.equals("admin")) {
currentUser = usersList.get(i);
userIsLogged = true;
updateLoginButton();
dialog.dismiss();
break;
}
}
if (!userIsLogged) {
userIsLogged = false;
updateLoginButton();
dialog.dismiss();
Toast.makeText(MainActivity.this, "Login Failed",
Toast.LENGTH_SHORT).show();
}
}
}
PROBLEM SOLVED, SOLUTION:
In the onCreate() I inflate the alert_dialog layout in a View variable. I made that View variable global (before onCreate()) and then in onLabLoginButtonClick() I don't inflate the view again, but I use that global instantiated in the onCreate(). hope its clear. thank you all!

You getText just after initialization. Untill you have text in xml you won't get the text. In onclick of alertdialog button get the text.
Declare
EdiText ed1,ed2; // before onCreate if in activity and onCraeteView in fragment
as a instance variable
View view = getLayoutInflater().inflate(R.layout.login_alert, null, false);
ed1= (EditText) view.findViewById(R.id.emailEditText))
ed2 = (EditText) view.findViewById(R.id.emailEditText);
then on Alert dialog Button click
String email = ed1.getText().toString();
String password= ed2.getText().toString()

you must get the text when you click on login button of alert dialog box
the above mentioned code you get text when you show alert dialog it always return always empty string you should follow the following procedure
first you make a custom alert box layout having two edit text and one button
user write text to edittext for login and give password and then click login button
when you call login button click listener you can get text of edittext easyly

You are trying to get the text immediately after you inflated the view. Try doing it when the user clicks the done button instead.

Before onCreate add:
EditText email;
EditText pass;
Add this in your onCreate
etEmail (EditText) view.findViewById(R.id.emailEditText);
etPass (EditText) view.findViewById(R.id.emailEditText);
Then add this to when your button is clicked
String email = etEmail.getText().toString();
String pass = etEmail.getText().toString();

Just ensure that the editText.getText.toString() method is inside the OnClick() method, eg:
TextView submit = enquiryFragment.findViewById(R.id.query_submit_button);
submit.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v){
query_type = query_type_editText.getText().toString();
query_text = query_editText.getText().toString();
if (query_text.length()!=0 && query_type.length()!=0) {
postQuery(query_type, query_text, store_id);
// Log.e("query_type ",query_type );
}else{
Toast.makeText(getContext(), "Enter something !", Toast.LENGTH_SHORT).show();
}
}
});

Alternatively add a TextChangedListener to you textview to change the change the string every time the textboxtext changes.
A textwatcher is also possible

you should get the text when you click on save or done button.
If you get this text on click of alert dialog button, you may end up taking it multiple times.

Creating a dialogue alert using a random string from a array Android

I'm trying to code a application for andriod (using eclipse) in which when a imagebutton is presses a alertdialouge comes up with a random string from and array, each time the button is pressed i would like it to change the string from the array. I have coded a alertdialouge and some code which gets a random string but it does it to a text-view instead of a alert dialouge. Can you please have a look at my code and tell me what i need to change?
package kevin.erica.box;
import android.app.Activity;
import android.app.AlertDialog;
import android.os.Bundle;
import android.view.View;
import android.widget.TextView;
import java.util.Random;
public class TheKevinAndEricaBoxActivity extends Activity {
/** Called when the activity is first created. */
private String[] myString;
private String list;
private static final Random rgenerator = new Random();
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Resources res = getResources();
myString = res.getStringArray(R.array.myArray);
list = myString[rgenerator.nextInt(myString.length)];
TextView tv = (TextView) findViewById(R.id.textView1);
tv.setText(list);
}
public void kevin(View view)
{
new AlertDialog.Builder(this).setTitle("The Box").setMessage(getResources().getText(R.string.list)).setNeutralButton("Close", null).show(); }
}

As I understand, you need to display a randomly selected text string from an array whenever a particular ImageButton is pressed.
Try the following code:
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Resources res = getResources();
myString = res.getStringArray(R.array.myArray);
list = myString[rgenerator.nextInt(myString.length)];
ImageButton ib = (ImageButton) findViewById(R.id.img_button_id);
ib.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View arg0) {
AlertDialog.Builder b = new AlertDialog.Builder(TheKevinAndEricaBoxActivity.this);
b.setMessage(myString[rgenerator.nextInt(myString.length)]);
Dialog d = b.create();
d.show();
}
});
}

{...
list = myString[rgenerator.nextInt(myString.length)];
TextView tv = (TextView) findViewById(R.id.textView1);
tv.setText(list);
}
public void kevin(View view)
{
new AlertDialog.Builder(this).setTitle("The Box").setMessage(getResources().getText(R.string.list)).setNeutralButton("Close", null).show();
}
...}
R.string.list is a static string that will never change during runtime, and it's defined in res/values/strings.xml
I would delete the TextView entirely and pass in the value to be displayed in the alert.
{...
String randomInt = myString[rgenerator.nextInt(myString.length)];
showAlert(randomInt);
}
public void showAlert(String randomInt){
new AlertDialog.Builder(this).setTitle("The Box").setMessage(
"Here's a random number: " + randomInt
).setNeutralButton("Close", null).show();
}
...}

You just need to change either .setTitle(), or .setMessage() to pass in your value. Something like this ought to work for you:
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setMessage(list)
.setCancelable(false)
.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
// put your code here
}
})
.setNegativeButton("No", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
// put your code here
dialog.cancel();
}
});
AlertDialog alertDialog = builder.create();
alertDialog.show();
It is easier to understand what is going on if you don't try to cram all of your chained method calls into one single line.
Also it seems like you got the variable names for these two backwards:
private String[] myString;
private String list;

Using NumberPicker Widget with Strings

Is there a way to use the Android NumberPicker widget for choosing strings instead of integers?

NumberPicker picker = new NumberPicker(this);
picker.setMinValue(0);
picker.setMaxValue(2);
picker.setDisplayedValues( new String[] { "Belgium", "France", "United Kingdom" } );

NumberPicker numberPicker = new NumberPicker(this);
String[] arrayString= new String[]{"hakuna","matata","timon","and","pumba"};
numberPicker.setMinValue(0);
numberPicker.setMaxValue(arrayString.length-1);
numberPicker.setFormatter(new NumberPicker.Formatter() {
#Override
public String format(int value) {
// TODO Auto-generated method stub
return arrayString[value];
}
});

String value = String.valueOf(picker.getValue());
You could mean something else, but it isn't very clear what you mean.
UPDATED:
You can fake it by setting your own formatter:
CountryFormatter implements Formatter {
public String toString(int value) {
switch(value) {
case 0:
return "England";
case 1:
return "France";
}
return "Unknown";
}
}
picker.setFormatter(new CountryFormatter());
getValue() will still return an int, so you probably want to map the names of countries to their ids.
ADDED:
The implementation of NumberPicker has:
public void setRange(int start, int end, String[] displayedValues)
Which seems to do a better job of what you want then the above formatter.. although it isn't mentioned in the documentation so probably isn't part of the public api

try this solution, may help you
NumberPicker pickers = new NumberPicker(this);
String[] arrayPicker= new String[]{"abc","def","ghi","jkl","mno"};
//set min value zero
pickers.setMinValue(0);
//set max value from length array string reduced 1
pickers.setMaxValue(arrayPicker.length - 1);
//implement array string to number picker
pickers.setDisplayedValues(arrayPicker);
//disable soft keyboard
pickers.setDescendantFocusability(NumberPicker.FOCUS_BLOCK_DESCENDANTS);
//set wrap true or false, try it you will know the difference
pickers.setWrapSelectorWheel(false);
//create button to test selected text string
btnPicker.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
//get position (int) from number picker
int pos = pickers.getValue();
//get string from number picker and position
String selecPicker = arrayPicker[pos];
//test toast to get selected text string
Toast.makeText(context, selecPicker , Toast.LENGTH_SHORT).show();
}
});

This worked for me.
public class YourClassName extends AppCompatActivity {
NumberPicker picker = null;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.your_activity_layout_file);
picker = (NumberPicker) findViewById(R.id.pickerId_From_your_Layout_file);
picker.setMinValue(0);
picker.setMaxValue(3);
picker.setDisplayedValues(new String[]{"English", "French","Kiswahili","عربى"});
}
}