I know that the Dialog class is the base class for dialogs, but it says in the documentation that you should avoid instantiating Dialog directly. Instead, you should use one of the following subclasses: AlertDialog or DatePickerDialog or TimePickerDialog.
Why?
AlertDialog is a lightweight version of a Dialog. This is supposed to deal with INFORMATIVE matters only, That's the reason why complex interactions with the user are limited. Dialog on the other hand is able to do even more complex things .
when would i use an Alert Dialog?
-When i just want to inform something to the user .
-When we want use for a prompt like Do you want to go back (Yes, No, Cancel. Alert dialog comes with 3 buttons which are positive, negative and neutral which are provided by default).
-When i want to prompt user for a simple value (number/date/string...)
when would i use a Dialog?
-When i want to carry on a complex process with more buttons and widgets .
-Example:
Dialogs in Android are used to shows alerts for making decisions or to edit a single value.
But there are some differences between an AlertDialog and a Dialog.
In an AlertDialog you always want to show a message and at least one Button for user interaction.
In a Dialog you have a custom view to a TextView or something more complex.
Related
I am a new developer and I want to build an app for a personal purpose.
I would like to receive some input when the application load up on with dialog box with textbox for input only number and 1 button "Ok".
I tried to find solutions but could not so.
Thank you for all !
Android do built in alert dialog. What you need just inflate your custom layout to create alert dialog. You don't have to add your custom button which android also provite negative(some cancel action),positive(some comfirm action),neutral(which is something work like default) button for you. Which you just need to study the link.
I have a list of options that are shown in an AlertDialog. The AlertDialog populates the list from a SharedPreferences file. Currently the user makes a selection, the AlertDialog closes and depending on the choice some edit text fields are filled in.
I would like to add an OnLongClickListener call to each option in the list, which when utilized would pop up another AlertDialog, over the top of the existing one, with a simple "are you sure you want to delete this?" question, then a yes and no button.
The dialog creation is simple, I just want to know if the OnLongClickListener can be applied and if AlertDialogs can be down on top of each other?
my answer here may help with adding an OnLongClickListener. The code I added is at the bottom of my response.
You can accomplish what you want by setting a new OnShowListener on your dialog and overriding the onShow() method
Hi I want to make a custom dialogue box for my android application and want to populate it with buttons, check boxes and such kind of items.
I have followed the tutorial from android developers website, but that is not what I want, actually I want to customise the background and size of the dialogue box.
Please if any body could give me a head start, Plus I want to know when I design a background for that box, what dimensions and pixel numbers I use so that it may run the same in Galaxy Note, Galaxy S and tablets and other mobile phones running android.
Here is the picture of customised dialogue box. Like that I want to work out something.
Yes this is a good question. You must use a custom dialog with a transparent bg theme like these:
Dialog dialog = new Dialog(mContext, android.R.style.Theme_Translucent_NoTitleBar);
dialog.setContentView(R.layout.custom_dialog);
dialog.show();
where custom_dialog will be your XML for the dialog layout, and as far as dimensions go you should really test your app on a number of different screen resolution devices to ensure it displays as you want.
On occasion I have wanted to create a fully customized dialog such as the one you've shown.
When I had to do it, I fought for a while trying to make it a Dialog. In the end I found it was far easier to just wrap my dialog in its own activity, set it to theme transparent in the manifest, and make the layout xml file such that there was transparent space around the edges. That was the easiest way for me to get rid of all of the default dialog formatting (i.e. the frame that it comes in if you do it with the setContentView() route)
So while it is not technically a dialog any more, to the user it serves the same purpose.
I have a dialog with a listview, the first dialog is for selecting an item and the second one is when you edit the dialog. The first one uses a standard dialog box with no custom layout but for the second one I had to use a custom layout to get the picture in place (if anyone knows how I can populate a standard multiple choice dialog with an typed arrayadapter and item template let me know :)). The first dialog looks like standard dialog should look like but how can I get the second one to look the same with white background, lines between the items etc and be sure it always looks like the standard one even when that one is changed.
Standard
(source: filedump.net)
Custom
(source: filedump.net)
/Viktor
For the same, you need to use setMultiChoiceItems while creating dialog. I hope this example helps you: Android Multi selection dialogs
And also check this example: Android: Spinner-Like UI for Selecting Multiple Options
Pretty new to android so excuse me if this is a really obvious question.
Say my application has a bunch of TextViews, each one showing the attributes of a certain product (name, price, etc). I have a button next to each of these TextViews labeled "modify".
How do I make it so that when I press the modify button next to a certain attribute, a popup window with a space to enter text into comes up so that the user can enter text into this box and then have the actual attribute listing on the original page change? Actually I just need a push in the right direction with creating this popup text field... not sure if there is already some built in functionality for this or if not, what would be the best way to create this kind of thing.
Thanks.
Why not have the modify button set TextEdit.setEnabled(true); and then change focus with TextEdit.setFocus? Note that both of these are inherited from view
If you really want a dialog you might want to looking into the AlertDialog.Builder. I know you can use it with buttons and radio buttons, but I'm not sure you can get it to work with a TextView.
Use a code like this for the input popup: Android dialog input text
In the positive button handler, set your edittext content programmatically like this:
myEditText.setText(value).
As simple as that. The only difference with a standard GUI framework is that you don't retrieve the value as a result of the popup function. Instead, you must provide an action handler.