id tag

1618 questions

1 answers
21 views
0

Android Studio Questions

Regardless of which of the two check boxes is checked, I would like to change calendarview to visible.The default status for xml is invisible.The error keeps appearing on the second override, so I wou...

android

2 years ago

1 answers
75 views
0

[Cotlin] After creating an empty array, it is not possible to add a value to the array each time the int value is exceeded.

Hello, teachers. I'm asking you a question because there's something difficult about Cotlin.What I want to do is enter a value in one activity and click the buttonIt is added to the list view of other...

kotlin android

2 years ago

1 answers
115 views
0

Calls private void from c# public static

I'm a beginner at c#I'm trying to do this, but I don't know the syntax

c# void

2 years ago

1 answers
115 views
0

Android AlarmManager app doesn't work when killed.

As the title says, when the app starts, alarmManager.setExactAndAllowWhileIdle(AlarmManager.RTC_WAKEUP,calendar.getTimeInMillis(), pendingIntent);If you register the alarm and the app is alive in the...

android alarmmanager

2 years ago

1 answers
93 views
0

To save visibility as Shared Preferences

I tried to save visibility as shared preference by referring to stack overflow, but only split_two state is saved and the rest is not saved. Where should I modify to save the visibility of all buttons...

java android sharedpreference visibility

2 years ago

4 answers
84 views
0

How to save TextView as Shared Preferences

I saved the number of clicks on the counter using sharedpreference. If you click on it after you exit the application, the number will be counted. However, TextView is not saved, so if you press up to...

android sharedpreference textview

2 years ago

2 answers
26 views
0

Is java) hashCode() called automatically?

I need to use hashCode(), equals().Does HashMap automatically call when saving both functions?And except for this framework, when comparing objects equally,Do I have to call and use both functions dir...

android java

2 years ago

1 answers
101 views
0

I want to make a shared preference single tone.

I want to make a single tone with Shared Preference, but there is a null point error < java.lang.RuntimeException: Unable to start activity ComponentInfo{com.raracraft.every_hour/com.raracraft.every_h...

sharedpreference android java

2 years ago

1 answers
30 views
0

[Android] OnBackPressedCallBack() does not work in the dialog fragment.

After displaying the dialog fragment window, enter various data and click BackI'm trying to save the data by sending it to an activityTo test whether onBackPressedCallback works well, I'm going to sen...

android java

2 years ago

1 answers
84 views
0

[Android JAVA] How to float a new window of Activity in Fragment

I want to open a new activity window in Fragment on Android JavaPressing the button will shut down the app at the same time as the error.f0Binding.ibBk.setOnClickListener(new View.OnClickListener() { ...

java fragment activity android

2 years ago

- 160 -

Popular Tags

python x 4647

android x 1593

java x 1494

javascript x 1427

c x 927

c++ x 878

ruby-on-rails x 696

php x 692

python3 x 685

html x 656