I got error at this line:
alert.setPositiveButton("YES", new DialogInterface.OnClickListener()
Logcat gives this error
java.lang.NullPointerException
Anyone can help me?
//method to remove list item
private void removeItemFromList(int position) {
final int deletePosition = position;
AlertDialog.Builder alert = new AlertDialog.Builder(MainActivity.this);
alert.setTitle("Delete");
alert.setMessage("Do you want delete this item?");
alert.setPositiveButton("YES", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
// TOD O Auto-generated method stub
// main code on after clicking yes
arr.remove(deletePosition);
adapter.notifyDataSetChanged();
adapter.notifyDataSetInvalidated();
}
});
alert.setNegativeButton("CANCEL", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
}
});
alert.show();
}
Call removeAt(deletePosition) onClick of Yes
public void removeAt(int deletePosition) {
arr.remove(deletePosition);
notifyItemRemoved(deletePosition);
notifyItemRangeChanged(deletePosition, arr.size());
}
Related
I'm trying to open 2 alert dialogs like permissions, the first one pops up and dismiss when I press the positiveButton, then It inflates the second one, but when I press positiveButton on second alertdialog it does not dosmiss and keeps showing it
private void requestXiaomiBootPermission(){
AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);
builder.setTitle("Automatic boot");
builder.setMessage("we need this permission to work");
builder.setCancelable(false);
builder.setPositiveButton("Allow", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int i) {
addAutoStartup();
requestXiaomiBackgroundPermission();
dialog.dismiss();
}
}).show();
builder.setNegativeButton("Deny", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
}
}).show();
builder.setNeutralButton("do not show", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
}
}).show();
builder.show();
}
private void requestXiaomiBackgroundPermission(){
AlertDialog.Builder builder2 = new AlertDialog.Builder(MainActivity.this);
builder2.setTitle("Popup window");
builder2.setMessage("we need this permission to work");
builder2.setCancelable(false);
builder2.setPositiveButton("Allow", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int i) {
addPermissionsOnBackgroud();
dialog.dismiss(); // --> Here it does not dismiss when this dialog inflates
}
}).show();
builder2.setNegativeButton("Deny", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
}
}).show();
builder2.setNeutralButton("do not show", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
}
}).show();
builder2.show();
}
So the circuit is this
I open the app and the first dialog pops up ( requestXiaomiBootPermission() ) , then when I press the positiveButton allow it opens the second dialog ( requestXiaomiBackgroundPermission() ) but when I press allow on this one, dialog.dismiss() does not dismiss my dialog and keeps there, any solution?
Don't invoke show() after every setXXXXXButton() call. Just invoke it once, at the end. You're creating 4 boot permission dialogs, and 4 background permission dialogs, and they're all getting stacked on top of each other.
You are opening both dialog 4 times. Remove show() method after all three button.just keep show() method at end.
private void requestXiaomiBootPermission(){
AlertDialog.Builder builder = new AlertDialog.Builder(context);
builder.setTitle("Automatic boot");
builder.setMessage("we need this permission to work");
builder.setCancelable(false);
builder.setPositiveButton("Allow", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int i) {
dialog.dismiss();
}
});
builder.setNegativeButton("Deny", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
}
});
builder.setNeutralButton("do not show", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
}
});
builder.show();
}
i have this:
public void showDialog() {
AlertDialog.Builder builder = new AlertDialog.Builder(updatedActivity.this);
builder.setTitle("Choose the currency you would like to exchange.");
//list of items
String[] items = getResources().getStringArray(R.array.countries_array);
builder.setSingleChoiceItems(items, 0,
new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
}
});
String positiveText = getString(android.R.string.ok);
builder.setPositiveButton(positiveText,
new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
//So here i wanna a code like : If pressbutton = buttonto, then buttonto.setText(selecteditem..)
}
});
String negativeText = getString(android.R.string.cancel);
builder.setNegativeButton(negativeText,
new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
// negative button logic
}
});
AlertDialog dialog = builder.create();
// display dialog
dialog.show();
}
In the on click event, i wanna know which the button was pressed, so for example if buttonto.ispressed then buttonto.settext(the selected item)
So how to do it
Thanks
Actually my issue is when i press the back button it shows a dialog and also at the same time the application finished without any operation on key? Can any one solve this?
#Override
public void onBackPressed() {
super.onBackPressed();
AlertDialog.Builder ab = new AlertDialog.Builder(this);
ab.setMessage("Really want to exit");
ab.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
finish();
}
});
ab.setNegativeButton("No", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
Main.super.onBackPressed();
}
});
ab.create();
ab.show();
}
remove super.onBackPressed(); from method, keep it in onClick() only
#Override
public void onBackPressed() {
super.onBackPressed(); //remove it
}
seems you are performing same operation in both buttons, you should remove Main.super.onBackPressed() from negativeButton
ab.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
super.onBackPressed();
}
});
ab.setNegativeButton("No", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
ab.dismiss();
}
});
Don't call super method of onBackPressed.
#Override
public void onBackPressed() {
AlertDialog.Builder ab = new AlertDialog.Builder(this);
ab.setMessage("Really want to exit");
ab.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
finish();
}
});
ab.setNegativeButton("No", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
}
});
ab.create();
ab.show();
}
try this
#Override
public void onBackPressed() {
AlertDialog.Builder ab = new AlertDialog.Builder(this);
ab.setMessage("Really want to exit");
ab.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
finish();
}
});
ab.setNegativeButton("No", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
Main.super.onBackPressed();
}
});
ab.create();
ab.show();
}
You need to Remove, super.onBackPressed(); from onBackPressed(). then your function should as,
#Override
public void onBackPressed() {
AlertDialog.Builder ab = new AlertDialog.Builder(this);
ab.setMessage("Really want to exit");
ab.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
finish();
}
});
ab.setNegativeButton("No", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
Main.super.onBackPressed();
}
});
ab.create();
ab.show();
}
I am currently using an app that needs to utilize a lot of AlertDialogs. I've currently coded a basic one here:
protected void StopButton () {
AlertDialog.Builder StopDialog = new AlertDialog.Builder(MainActivity.this);
StopDialog.setTitle(R.string.Stop_Title);
StopDialog.setMessage(R.string.Stop_Message);
StopDialog.setPositiveButton(R.string.Yes_Button, new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int id) {
((Protoype2) getApplication()).setRequestingLocationUpdates(false);
finish();
}
});
StopDialog.setNegativeButton(R.string.No_Button, new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
((Protoype2) getApplication()).setRequestingLocationUpdates(true);
}
});
StopDialog.setNeutralButton(R.string.Negative_Button, new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
//Closes box
finish();
}
});
AlertDialog alert = StopDialog.create();
alert.show();
}
The StopButton works and the Dialog comes up when I call for it. However, the finish(); function does not work.
Upon review, I found that finish(); did not finish the Dialog, rather the entire app. I know I need to get a AlertDialog.cancel in there.
The problem is this: as you can see, the AlertDialog is only created AFTER the StopDialog is finished.
How can I set an AlertDialog.finish() before StopDialog is finished?
Replace finish() with dialog.dismiss() like this:
AlertDialog.Builder StopDialog = new AlertDialog.Builder(TestActivity.this);
StopDialog.setTitle("Title");
StopDialog.setMessage("Stop");
StopDialog.setPositiveButton(R.string.yes, new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int id) {
((Protoype2) getApplication()).setRequestingLocationUpdates(false);
dialog.dismiss();
}
});
StopDialog.setNegativeButton(R.string.no, new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
((Protoype2) getApplication()).setRequestingLocationUpdates(true);
}
});
StopDialog.setNeutralButton("Neutral", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
//Closes box
dialog.dismiss();
}
});
AlertDialog alert = StopDialog.create();
alert.show();
There is no such method finish() for AlertDialog. finish() refers to Activity class and will finish the current Activity. You should instead use dismiss().
You can use the DialogInterface object like dialog.dismiss() to dismiss the AlertDialog.
You can go through the documentation for a broader idea :)
http://developer.android.com/guide/topics/ui/dialogs.html
Im getting this error when trying to implement both onClickListener and onLongClickListener for a RelativeLayout:
10-19 17:49:31.400: E/AndroidRuntime(30886): FATAL EXCEPTION: main
10-19 17:49:31.400: E/AndroidRuntime(30886): java.lang.IllegalStateException: The specified child already has a parent. You must call removeView() on the child's parent first.
This is part of the code:
RelativeLayout meals_layout = (RelativeLayout) view
.findViewById(R.id.meals);
meals_layout.setOnLongClickListener(new OnLongClickListener() {
#Override
public boolean onLongClick(View v) {
AlertDialog.Builder builder = new AlertDialog.Builder(
JournalActivity.this);
builder.setTitle(R.string.meal_delete);
builder.setView(clickView);
builder.setPositiveButton(R.string.string_delete,
new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
}
});
builder.setNegativeButton(R.string.string_cancel,
new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog,
int which) {
// Do nothing
dialog.dismiss();
}
});
builder.create().show();
return false;
}
});
meals_layout.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
AlertDialog.Builder builder = new AlertDialog.Builder(
JournalActivity.this);
builder.setTitle(R.string.meal_edit); // al que hacerlo bonito
builder.setView(clickView);
builder.setPositiveButton(R.string.string_edit,
new DialogInterface.OnClickListener() {
}
});
builder.setNegativeButton(R.string.string_cancel,
new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog,
int which) {
// Do nothing
dialog.dismiss();
}
});
builder.create().show();
}
});
The first time I open the activity, I can do a longclick as many times as i want. But when I click any other other button (not only the one sentenced here), if I try again to do a longclick... the application crashes.
I will really appreciate your help.
Thanks :)
Each view is only allowed one parent. Apparently clickView already has one, so when you call setView(clickView) it throws the error. One fix is to add:
((GroupView) clickView.getParent()).removeView(clickView);
to the beginning of both of your listeners. This will "orphan" clickView so it can be added to the AlertDialog.