I have this app that originally has you take a picture, shows you a progress bar, and uploads it to a website.
What I want to add is something so that before the progress bar shows, an Intent starts an activity that loads a layout with a dropdown menu that allows you to choose a descriptor for the picture. Following this, once you hit the 'OK' button on this new layout, the program should return back to where it had left off and display the progress bar.
Does anyone have any ideas on how to achieve this?
It seems that all I really want is some way to tell the program to stall for a while to call an intent, and when the user hits 'OK', the code may resume.
You should be using OnActivityResult().. More information on the link below http://developer.android.com/reference/android/app/Activity.html#startActivityForResult(android.content.Intent, int)
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I am working on a small task for an android app. And I dont really know what are the things I need to do or things I should be careful for.
In a user's personal page, there is a button where the user can click in. Then it goes to a layout where there are two buttons "cancel" and "submit". Below them, there is a blank space where the user can edit his personal info. (Here the keyboard should automatically pop up).
After he clicks "submit", the info is saved and the app goes back to the personal page and the info he just entered will be displayed.
If a user already has some text for his info, after he clicks the edit button, the whitebox in the layout should has the info that he has previously entered. from that he can re-edit and submit again.
Any type of hints and guidelines will be greatly appreciated!! Thank you so much!!!
This sounds like a good place to use Activity results. You can make the screen where the user enters the information an Activity, and then start it by calling Activity.startActivityForResult(). Once the user is finished and clicks done, you store the result with Activity.setResult() and call finish() to close that activity. The original Activity that opened that screen will then get a callback in onActivityResult() with the data that you set in setResult(). This is a pretty common task so there should be plenty of examples around.
So i'm planning to develop an android application. In one activity, if i were to click a button of add, then it will prompt a user input and store the data. After that, thare would be another "list of item" button, where users can see which item they added and the information they input earlier.
I was thinking of using if.. else statement to check whether the button is click by setting a variable of default status=0 and change to 1 when clicked.
But how am i going to make sure that the functions won get messed up? is there any better suggestion for this? Im a beginner who just started to explore android studio.
Okay, so it is very simple and logical, and here is my best explanation. It's a rather long explanation, but I made it as thorough as possible...If you need any more help, just let me know:
You don't need to do any of that status=0 stuff. Just have an onclick listener:
(androidfromhome.com)
And in the listener, you want to go to another screen with a text input. So, just have an intent in the onClick which takes user to another screen:
(www.devcfgc.com)
Okay, so now you got your second screen right? You're going to want a textview (Change this in the xml) in the middle of the screen, where the user can enter data:
String stuff = TextView.getText();
Note, you will need to initialize the textview:
(androidfromhome.com)
So, now you got the text that the user entered. Just save it in SharedPreferences, and that's it, you have it saved!
http://developer.android.com/reference/android/content/SharedPreferences.html
Read about SharedPreferences in the link above.
So now, you have it saved. If you are going to get a lot of data, you can also save it in a database, which is more advanced stuff, that I don't know how to do. Now, display the saved data on the screen (A new screen, again, using an intent) using the method:
setText();
on your textView object for the next activity. That's it!
I have an app where the action bar and notification bar is hidden when user opens the app. I have seen some apps where some overlay help is shown with the image of a hand and up,down arrows and text below which says:
"Tap to view action bar. Tap again to go full screen"
Any help?
Do not use full screen for your app unless you really knows it's the only way. Full screen is annoying for user as you hides clock, nottifications etc.
As for help you may want to use ShowCaseView library: https://github.com/Espiandev/ShowcaseView
Hello I require some advice on how to approach this problem,
bear with me as I am still new to android.
I have an activity that opens on application start and requires some information from the user, but next time the user opens the app, i want the application to open a different activity that will display the various information.
Kind of like facebooks app, where when you first run it, you have to login, and only then next time you run the app you are guided straight to the feed.
Any ideas how one could do this efficiently?
UPDATE: Ive stored the information via shared preferences and am now using a controller activity that decides which step to take.
So, Controller activity runs on start up, and decides whether to show a log in screen or whether to go straight to the information. But now im encountering a problem where i end up opening a blank activity (the controller) and then another ontop of that ( the decided activtiy). I dont want the blank activity to show, so its kinda of like a background process, any ideas?
Ideally you would have a main activity like a controller. Use a SharedPreference object to keep track of whether the user is logged in or not. So back in your main activity, read this value and if it is set go to your news feed activity else show a login screen activity. (as you do the check and redirection, you can show a progress dialog)
links for SharedPreferences
MobTuts
Android Developer
I am writing an application in Vaadin that searches for results. A form is used to specify the criteria and a table is used to represent the results.
I also want to show the amount of results found in a Window.Notification of Vaadin.
My problem is that I want the notification to stay there until the user clicks on it so it does not disappear after a few seconds.
If you just enter a large delay time, then if you don't click on these notifications and do several searches, all result notifications will come over each other. So if you then click on them to remove them, you will see the amount of results from your previous search.
This is what I want to avoid.
Notifications are added to the Window and as far as I can see, you can't get a reference to them to update them. So you can't change the current notification if there is already one present. After it is painted it is removed from the LinkedList<Notification> notifications of com.vaadin.ui.Window
One of the things I was looking at is how Vaadin closes the notification after you click on it so that maybe I can do the same before each search so that the previous notification is removed and the new search adds a new notification.
But so far I am unable to find how it is done.
A notification in html is shown as a div. So maybe there is a javascript I could call in Vaadin to remove that div?
Does anyone know how the timer works for closing the notification after the defined delay? Will this call a javascript that I could also call?
If the delay on the notification is -1, it has to be clicked on by the user. Unless the notification is of type TYPE_ERROR_MESSAGE, you have to create a notification object yourself:
Notification message = new Notification("Message", Notification.TYPE_HUMANIZED_MESSAGE);
message.setDelayMsec(-1);
getWindow().showNotification(message);
There is no mechanism in Vaadin to listen for hide events of notifications. You could create your own widget derived from VNotification to transmit this condition back to the server.