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Make EditText get input from NumberPicker

i'm trying to make an EditText field that onClick opens a numberPicker so the user can input a number.
this is my code:
tipET.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View view) {
final NumberPicker numberPicker = new NumberPicker(getContext());
numberPicker.setMaxValue(1000);
numberPicker.setMinValue(0);
AlertDialog.Builder builder = new AlertDialog.Builder(getContext());
builder.setView(numberPicker);
builder.setTitle("tip");
builder.setPositiveButton("ok",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int whichButton) {
Log.d(TAG, "TIP NUMBER IS:" + numberPicker.getValue());
num = numberPicker.getValue();
}
});
builder.setNegativeButton("cancel",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int whichButton) {
dialog.dismiss();
}
});
builder.create();
builder.show();
}
});
tipET.setText(String.valueOf(num));
for some reason tipET text stays the same after i input another number, why is that?
also for the first time i click on the EditText the keyboard pops up, and only on the second click my NumberPicker opens, how can i prevent that?

Add tipET.setText(String.valueOf(num)); to the onClick method for the positive button, right below num = numberPicker.getValue();, like this:
tipET.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View view) {
final NumberPicker numberPicker = new NumberPicker(getContext());
numberPicker.setMaxValue(1000);
numberPicker.setMinValue(0);
AlertDialog.Builder builder = new AlertDialog.Builder(getContext());
builder.setView(numberPicker);
builder.setTitle("tip");
builder.setPositiveButton("ok",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int whichButton) {
Log.d(TAG, "TIP NUMBER IS:" + numberPicker.getValue());
num = numberPicker.getValue();
// update the text of the EditText here
tipET.setText(String.valueOf(num));
}
});
builder.setNegativeButton("cancel",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int whichButton) {
dialog.dismiss();
}
});
builder.create();
builder.show();
}
});

How to prevent back button until confirmation message?

In Android Studio, I've used a WebView. So if a user clicks the back button, I want to show a confirmation message before app close.
This is my current code which I used, but it is not working every time
public void onBackPressed() {
new AlertDialog.Builder(this)
.setMessage("Are you sure you want to exit?")
.setCancelable(false)
.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
finish();
}
})
.setNegativeButton("No", null)
.show();
}

The above code is working fine.
If you want to navigate the WebView back to the previous page use below one.
#Override
public void onBackPressed() {
if (mWebView.canGoBack()) {
mWebView.goBack();
}else{
new AlertDialog.Builder(this)
.setMessage("Are you sure you want to exit?")
.setCancelable(false)
.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
super.onBackPressed();
}
})
.setNegativeButton("No", null)
.show();
}
}

Can you try with it. Hope it works

#Override
public void onBackPressed() {
if (webView.canGoBack()) {
// If web view have back history, then go to the web view back history
webView.goBack();
} else {
// Ask the user to exit the app or stay in here
exitApp();
}
}
public void exitApp() {
final AlertDialog.Builder builder = new AlertDialog.Builder(mContext);
builder.setTitle("Please confirm");
builder.setMessage("Do you want to exit the app?");
builder.setCancelable(true);
builder.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialogInterface, int i) {
finish();
}
});
builder.setNegativeButton("No", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialogInterface, int i) {
dialogInterface.dismiss();
}
});
// Create the alert dialog using alert dialog builder
AlertDialog dialog = builder.create();
// Finally, display the dialog when user press back button
dialog.show();
}

You have to call your confirmation message method inside your Activities onBackPressed Method
#Override
public void onBackPressed() {
if (mWebView.canGoBack()) {
mWebView.goBack();
} else {
onBackPressed() // This is Your Confirmation Dialog method
}
}

#Override
public void onBackPressed() {
if (webView.canGoBack()) {
webView.goBack();
}else {
new AlertDialog.Builder(this)
.setTitle("Are you sure?")
.setMessage("Do you want to exit?")
.setPositiveButton("Close", new DialogInterface.OnClickListener(){
#Override
public void onClick(DialogInterface dialog, int which) {
finish();
}
})
.setNegativeButton("No", null)
.show();
}
This worked for me. Hope it works.

creating alertdialog inside a non activity class

i have a class that implements view.onclicklistener. how do i create an alert dialog from this class which is not an activity class.
i kept on getting this error.
java.lang.RuntimeException: Can't create handler inside thread that has not called Looper.prepare()
this is my code
class LoginView implements View.OnClickListener {
public void onClick(final View v) {
new AlertDialog.Builder(v.getContext())
.setTitle("Delete entry")
.setMessage("Are you sure you want to delete this entry?")
.setPositiveButton(android.R.string.yes, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
// continue with delete
}
})
.setNegativeButton(android.R.string.no, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
// do nothing
}
})
.setIcon(android.R.drawable.ic_dialog_alert)
.show();

Do it like this
private Handler mHandler = new Handler(Looper.getMainLooper());
#Override
public void run() {
// ...
mHandler.post(new Runnable() {
public void run() {
// Create your AlertDialog Here...
}
});
// ...
}

try this method in your class:
public static void showAlert(Activity activity) {
new AlertDialog.Builder(activity)
.setTitle("Delete entry")
.setMessage("Are you sure you want to delete this entry?")
.setPositiveButton(android.R.string.yes, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
// continue with delete
}
})
.setNegativeButton(android.R.string.no, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
// do nothing
}
})
.setIcon(android.R.drawable.ic_dialog_alert)
.show();
}

how pass result from alertDialog to onActivityResult

I have Activity_A an Activity_B.
I use onActivityResult and i have a problem:
java.lang.RuntimeException: Failure delivering result
ResultInfo{who=null, request=3, result=-1, data=Intent { (has extras)
}} to activity {com.example.sellcar/com.example.sellcar.View_Offer}:
android.database.CursorIndexOutOfBoundsException: Index 0 requested,
with a size of 0
I guess that I can not pass this way 'result' from alertDialog to onActivityResult.
I do not know how to solve this problem :/
Please help
Activity_A:
bBUTTON.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
Intent intent = new Intent(Activity_A.this,Activity_B.class);
startActivityForResult(intent, 3);
}
});
...
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if(requestCode == 3 && resultCode == RESULT_OK){
String pId = data.getStringExtra("MyData");
Toast.makeText(Activity_A.this,pId,Toast.LENGTH_LONG).show();
}
}
Activity_B:
AlertDialog.Builder builder=new AlertDialog.Builder(View_Sell.this);
builder.setTitle("UWAGA !").setMessage("blablabla");
builder.setPositiveButton("YES", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int id) {
String ostatnioDodanaSprzedaz="XYZ";
Intent intent = new Intent();
intent.putExtra("MyData", ostatnioDodanaSprzedaz);
setResult(RESULT_OK, intent);
onBackPressed();
} });
builder.setNegativeButton("NO", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int id) {
} });
AlertDialog ad = builder.create();
ad.show();

Try to replace:
setResult(RESULT_OK, intent);
onBackPressed();
on:
if (getParent() == null) {
setResult(RESULT_OK, intent);
} else {
getParent().setResult(RESULT_OK, intent);
}
finish();

You can follow the Observer pattern.
First, create an Interface in the Activity class itself:
public interface ResultListener {
void onResultSet(String text);
}
Then, create an object of ResultListener globally:
ResultListener = rl;
Implement the onResultSet(String text) method inside the onCreate method:
rl = new ResultListener() {
#Override
public void onPositiveResult(String text) {
Toast.makeText(context, text, Toast.LENGTH_LONG).show();
}
};
Next, create the AlertDialog
AlertDialog.Builder builder=new AlertDialog.Builder(this);
builder.setTitle("UWAGA !").setMessage("blablabla");
builder.setPositiveButton("YES", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int id) {
String ostatnioDodanaSprzedaz="XYZ";
tl.onResultSet(ostatnioDodanaSprzedaz);
// onBackPressed();
} });
builder.setNegativeButton("NO", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int id) {
} });
builder.show();
Here's how the final code will look:
public class MainActivity extends Activity {
ResultListener rl;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main_layout);
rl = new ResultListener() {
#Override
public void onPositiveResult(String text) {
Toast.makeText(context, text, Toast.LENGTH_LONG).show();
}
};
AlertDialog.Builder builder=new AlertDialog.Builder(this);
builder.setTitle("UWAGA !").setMessage("blablabla");
builder.setPositiveButton("YES", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int id) {
String ostatnioDodanaSprzedaz="XYZ";
rl.onResultSet(ostatnioDodanaSprzedaz);
// onBackPressed();
} });
builder.setNegativeButton("NO", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int id) {
} });
builder.show();
} //onCreate closed
public interface ResultListener {
void onResultSet(String text);
}
} //MainActivity Class closed

how to reload main activity after click "OK" on AlertDialog

I have an AlertDialog and I want the Main Activity to reload after I have click "OK". The problem is after I have click OK my activity returned to the home screen.
JAVA Code :
private void buildAlertMessageNoGps() {
final AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setMessage(
"This application needs GPS satellite or Wireless Networks localization enabled"
+ "\n" + "Do you want to enable it?")
.setCancelable(true)
.setPositiveButton("Yes",
new DialogInterface.OnClickListener() {
public void onClick(final DialogInterface dialog, #SuppressWarnings("unused") final int id) {
startActivity(new Intent(
Settings.ACTION_LOCATION_SOURCE_SETTINGS));
finish();
startActivity(getIntent());
}
})
.setNegativeButton("No", new DialogInterface.OnClickListener() {
public void onClick(final DialogInterface dialog, #SuppressWarnings("unused") final int id) {
dialog.cancel();
}
});
final AlertDialog alert = builder.create();
alert.show();
}
Help would be appreciated.

Change this code
new DialogInterface.OnClickListener() {
public void onClick(final DialogInterface dialog, #SuppressWarnings("unused") final int id) {
startActivity(new Intent(
Settings.ACTION_LOCATION_SOURCE_SETTINGS));
finish();
startActivity(getIntent());
}
to
new DialogInterface.OnClickListener() {
public void onClick(final DialogInterface dialog, #SuppressWarnings("unused") final int id) {
startActivityForResult(new Intent(
Settings.ACTION_LOCATION_SOURCE_SETTINGS), 0);
}

Call onCreate method again. But pass null as a parameter.
onCreate(null);