I want to create a questionnaire but I'm not sure what is the best way to approach this. I'm pretty new to Android but at the moment I have a working app which has a main activity screen which has various options. One of them is to launch the questionnaire. I have created a single database table which contains 4 columns Question Number, Question, Answer, Explanation. The explanation is displayed when the user selects the incorrect answer.
I am envisaging that the screen will be simple enough, just a textview containing the question and 3 buttons, 'YES' 'NO' 'BACK'. I plan to have 15 questions. What I'm wondering is do I have to create an activity for every question and every explanation even though the layout is going to be the same from one question to the next?
Definitely not!
Do this the way you would in any other application. Put your questions in some kind of list and iterate through them. Set the content "question" view, in your layout with the successive values.
... and remember to save the position in the list across Pause and Resume!
Ultimately to get this to work I had to use a counter which I incremented after each successive question. No list was required.
Related
I'm doing a app that will ask question to users like:
what is the capital of australia?
Camberra - paris - washington - toquio
and I will have 4 options, so user can select the right one.
When it choose the answer the next question will show.
I'd like to know if I need to create one activity for each of this questions/answers or there is another method? can I have examples?
'You can use Viewpager or viewFlipper for that purpose. in this way you can show all of your's questions in one activity'
I would change dynamically the content of the question and answers components.
If you animate the changes in those components it will look really nice and you'll be saving resources that you would waste creating an activity for each question.
I need some way to edit an item in my multi-line ListView - and it's just two text fields that need editing.
What would be the best way, design-wise, go about this? I feel that a whole new activity would waste too much screen space and look off, yet just a popup with the two fields and some confirm button might look off as well.
It's pretty subjective as to what's the best design for this, especially without knowing more about your specific use, however there are definitely a few possibilities that come to mind.
The new activity option that you noted is actually quite standard. You can see a similar paradigm used in Gmail, Google Talk, Messaging, etc. If your text fields expect to have something like a single word in each though, I can understand how that might feel like a waste of space to create a new activity. I wouldn't necessarily rule it out though; you can probably play around with styling to make it feel less empty (include labels, short descriptions, etc.). Also consider that most users nowadays have soft keyboards. That can take up a significant amount of space and make the view feel less empty.
The popup option seems less standard, but again if you styled it correctly I could see it working OK. What don't you like about this option?
Another option is to do a multi-pane layout of sorts which is far less common for a phone-sized layout but not out of the question. You could have a pane with two text boxes which is for the current item above your list view and have the contents change when you select an item in the list view. This is also a less standard UI.
You could also have an alternate view actually within the list item. In addition to your current (I'm assuming) two TextViews, you could have two EditTexts and maybe an OK and cancel button that are hidden. The visibility of all of these views would be toggled when you select the item.
There are more options too, I'm sure, but hopefully this will give you a little to think about at least.
I would use a separate activity for several reasons:
1) It's what users would expect. I can't recall any apps that use a pop up to edit contents of a listview
2) It'll be much easier to manage state in a separate activity e.g. when a user starts to enter some text and then gets interrupted by a call or email notification etc
3) If you're editing text then the keyboard wil take up most of the screen so you're activity won't look sparse.
you need to update in list view and add more items in list view???????
I have a task to create 10 questions where a user should be able to input the answer by using a touch keypad. The user should be able to cycle through questions by pressing a button called "N" Once the the user answers all of the questions a total score out of 10 would be displayed.
Im not asking for an answer but how to approach such a task.
So far ive created a keypad consisting of numbers and i can get 1 question to work and display whether the user entered correct or incorrect information but trying to get more then 1 question to work is messing up.
I had a thought and know that i can create 10 seperate activities for 10 questions but thats slightly crazy.
Can someone give me guidance on how to approach such as task
note im pretty new to android.
Thank You
All views have a visibility attribute (android:visibility); what would look nice is every time the user presses next is to simply hide the old view and make the next one show up (Can even add a fading transition to make it look fun as well)
In XML you can set them all to android:visibility="gone" to begin with, and then in your code, set it to objectName.setVisibility(0) to make it visible, and objectName.setVisibility(8) to hide it completely again.
Here is one approach (not necessarily the best):
*Wherever your question is (hopefully a TextView), get a reference of it in your activity.
*When the user answers a question, output if it was correct or not (A toast?)
*Change the TextView to the next question
You can programmatically add and remove views. You could create an empty view with just a linear layout then add and modify the existing views as you need them.
Are you writing it as a native Android app? A web-app (HTML, Javascript) could do what you're asking, and could be turned into an native app with embedded webkit view.
I'm interested in hearing what you guys think is the most efficient/solid object-oriented design for a simple multiple choice quiz.
Basically, the app presents a series of questions with 4 choices each. If the choice you selected is correct, then a new activity will display some congrats and full details behind the correct answer and if you're wrong it'll say you got it wrong, along with the details, etc.
After that, the user goes to the next question. On each new question, you'll see your score so far. So maybe you get 50 points for each correct answer, something like that.
Here's how I thought about implementing this: Create a custom view with some radiobuttons or some other widget that could be used for choosing an answer. The custom view takes a Question object, which is just a regular old java object, with fields for choices 1-4. Then, in the custom view, I can set the text of the radiobuttons to the choices from my Question object.
So in my activity it would look something like Question myQuestion = new Question("string for choice 1", "string for choice 2"...)
And then..
Use the question with my custom view. QuestionView myView = new QuestionView(this, myQuestion);
Ok so that's all great. I'm just wondering if I'm setting myself up for trouble. For one, I've got to keep track of the score across all the question activities. Does it make sense to have all of my questions subclass some, mostly empty, activity that I create which can have a counter in it that gets incremented anytime the user gets an answer right (i.e in my superclass activity int scoreKeeper; and in each activity that subclasses this activity: if(choiceIsCorrect) scoreKeeper++). This will allow the score to persist across the activities. I realize I could hold a score between activities by passing and extra to each new activity and then simply adding to it, but that doesn't really seem to make sense to me.
Sorry for all of the blabbering..but I guess my questions are: what do you think is the simplest design for this? Also, in general, I always assumed that you should always use a new activity whenever the user is doing a "single, focused thing"...as the Android paradigm states. But sometimes it feels weird to create so many activities. I know the fact that "it feels weird" is no reason not to do it, but when does it make sense to simply reuse on activity (e.g. in this case, just swapping in a new question in my activity and updating the UI accordingly) as opposed to starting a new activity?
Also, a more detailed question - what would be a smooth way to set which choice (e.g. which radiobutton) contains the right answer, so that when the user presses submit, I can check if they have the right answer and yes/no then react accordingly?
To summarize:
What is a straightforward, object-oriented way to create a succession of multiple choice question activities?
What's the most sensible way to keep track of the score?
Does each question necessarily need to be a separate activity? (And, in general, how do you guys approach the question of whether something ought to be a separate activity?)
Also, kind of a particular: what's the easiest way for me to flag which choice is the correct one so I can check to see if the user got right? I know that with a radiobutton, for example, you can use onCheckedChangeListener and retrieve which radiobutton is currently checked, but I'm not sure how to use that in my design to check if the user got it right...
Thanks!
I would not make the "correct/incorrect information activity" its own activity. Instead, when the user selects a radio button choice, and then clicks an "OK" button, a Dialog should pop up. When they close the dialog, there is a button there to advance to the next question.
I would say you should do this all in one activity.
I'm going to use one activity with a ViewFlipper for cycling through questions.
I want to create an activity, which shows a question with 4 answers, and at the bottom of the screen i want to place a timer.
I have already found timer example, and i created a question with the answers. the problem that they are 2 different projects and activities, and i am looking for the best way to implement it. i think i can't show 2 activities on one screen, but i can show 2 views or shell i use the ViewGroup, or maybe to copy-paste one of the activities code to another ( its the easiest way but probably the most ugliest way to implement it).
please tell me what is the best way, that i will study and not to waste time to study all the ways and only then to choose one of them.
welcome to StackOverflow.
You are correct in that you cannot display two activities at once. You must instead look into how layouts work in Android by reading some tutorials on the Android developer guide.
For your layout, I would recommend using a LinearLayout with four TextView objects inside it containing the questions (and perhaps your EditText objects below them) as well as your timer. Make sure they are all inside a ScrollView so the software keyboard doesn't force it all to be squeezed up. This is how I would approach it, but I encourage you to read about how layouts work and use the XML resources.
The Notepad tutorial is an excellent way to get started with views and text entry, as well as using SQLite databases.