1618 questions
When you put Toast on the screen, it's usually printed a little above the screen. I want to put Toast in the center of the screen where I want it, what should I do?
PackageInfo info = ctx.getPackageManager().getPackageInfo(getAppPackageName(ctx), PackageManager.GET_SIGNATURES);Doesn't the above statement mean to get the app's unique sign value? Is it wrong that I...
If you look at the games or applications on the Google Play Store, they don't end right away when you press Back, they float toastYou end the activity only when you press the dialog twice in a row. I ...
Hello. :) I have a question about 1:N communication. The platform used as a client is iPhone and Android. I also want to do a device that becomes 1 on the client. (Assume that you do not need a separa...
Please tell me how to write getExtra() and putExtra(). How I'm going to use it is There is a string variable called str, and I want to save this value. I want to save it and send the data from this ac...
I made AlertDialog using a builder for the activity, but I want to put a button in itOkay, or whatever, you do something when the button is pressed Not the yes or no button by default. How can we do t...
long lroomtime = Long.parseLong(roomtime);Because of this code, when you run the app, roomtime gets a number like 321351531232 from the Firebase I want to change 321351531232 to long format 3213515312...
When driven, the home screen appears from the beginning without a lock screen.The emulator is NEXUS X5 NOUGAT.
I want to know how to see the error code.
Loading the main screen (1.5 seconds) when running the app or switching the screen feels a little slow.Put the image in the layout background as shown in the code below There are also two images in th...
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