In my application I have requirement like this.I have number of data and I need to show that data on ListView kind of layout,now I have suppose total 6pages on each pages I want to show such data.I have listed number of textview on each page.Suppose i have 7pages so i need to make book kind of layout for that i am using this Code.https://github.com/harism/android_page_curl.
with this i am able to get such effect.As mentioned in below image.
Now my issue is,As OpenGl is converting entire layout to bitmap,i am not able to handle click event of textview.Whenever i click on textview on that time ACTION_DOWN method is called.and offcourse it should be called as entire layout is converting to bitmap thus we can't handle textview click event.
for making solution of this have googled and found some trick from This issue.Here mentioned to make seperate layout for handeling click listener,but not getting what exactly i have to do,as i don't have any experience in OpenGl,so if any one have idea about this issue,any one who can guide me handle click event.
The above solutions depends on your views pages. It may not work if you use ListViews on your pages or any ScrollView, you have to retest your application performance...
What i have done to get it working, is to create an extra root parent with,FrameLayout, place on top the widget, fi.harism.curl.CurlView and add PageContainer(RelativeLayout on may app).
At run time, get the drawable of your view page (View.getDrawingCache()) , and add The real PageView(witch contains click listener) to the PageContainer. Make the PageContainer alpha to 0. You have a duplicate page (transclude) to receive the page clic, the CurlView will still handle touch events for curl.
Related
Actually, I am working on RecyclerView that shows some details along with images and all data comes from a database.
In my RecyclerView, I have used three diffs layout and each layout is used according to data coming from the database that means if only one image comes from database then one_image.xml layout comes to play, if two then two_imag.xml layout comes to play and if more than three then the third layout I am using.
My apps working fine for some extents but when i am trying to scroll down further, it get crashed. I come to know that the problem is on OnCreateViewHolder, meaning it doesn't get called when I go down further in Recycler View.
I searched alots on google but nothing work for me. Is it possible to call OnCreateViewHolder every time or some other way to solve this problem?
Thanks in advance
Sounds like the best option would be to use one layout file that has all three image views but just default them to visibility "gone" so they dont take up space. Then when you need to use them, set them to visibility "visible" when you are creating your viewholder.
Without seeing any actual code it hard to be more specific.
I would like to start by saying if you can think of a better title for this problem, feel free to change it since I have no clue how to explain this in a short way.
So here is my problem:
For the application I am trying to make I have these schedules, one schedule for today, and one for upcoming days. Both of these are a listview inside a fragment.
(I used those fragments to create tabs to seperate the two.)
Each game (let's call them games because calling them activities would be confusing) on the schedule has a status, and here is where the annoying part comes. I have been asked to check if any game has been started, and if so I need to disable the buttons to start any other game than the one that is already ongoing.
EDIT: The main problem is that I cannot use findViewById on the listview item because apparently it is a null object reference
I made a little "paint"ing to give you more of a graphical representation.
So long story short, I need a way to check the status inside of every listview item inside of the listview inside of the fragment inside the activity to use said status to disable every button except for the one of the ongoing game.
Little side note: If no games have been started yet, all buttons are enabled.
I hope this made sense.
If you want some code to go with this, feel free to ask but be warned, I am making this inside a testing app so a lot of useless testing data and sloppy code.
EDIT:
This is where I am stuck in a more clear example:
The start buttons are enabled but should be disabled.
Scrolling further down the list, there is a started 'game' and right below it, a game with the same status as in the previous picture where the button is disabled as it should be.
This is because the "isStartable" boolean in my code goes to false after the game with status "start" has passed and the following items are disabled.
When I scroll back up, it is how it should be, the items are all disabled but I need them to be like this when the listview gets filled. Any way to refresh the data in this listview and taking the "isStartable" boolean with it?
This is what it looks like after I scroll back up.
create a model class for your listview data items. Set a boolean variable in model class like isGameStarted. Set that variable as per your result.Then in your listview adapter, put a condition as below
if(isGameStarted){
holder.startButton.setEnable(true);
else
holder.startButton.setEnable(false);
I have one of those screens where you fill user info, some other EditTexts etc. and send it to server. But there is section something like add note (just example). User can add as many notes as he want. At the beginning there is just button add note. When user press it then new TextView spawns above and he can fill it, or remove it. Then he can touch add note again and whole process repeats. You sure know what I mean. At the end I take all filed notes and send it to server.
I know that the way to do it is - on btn press inflate my TextView + delete btn layout and add it to linear layout. On btnPress then get its parent or whatever and remove it from layout.
However this is pretty annoying thing to do as it requires inflating, children views managing and all the other stuff. What I am asking is - is there some other way to do that? Maybe some library, or possibility to set adapter to linear layout etc.
Thanks :)
I wasn't exactly sure how to briefly paraphrase my question in the title, so please forgive me as I never post questions until now. I am new to Android/Java for starters, as the main language I have used so far is C++. My question is that I have a game board layout (similar to checkers/chess). When it is the user’s turn, they are to click the piece they want to move on the board and then the blank location they would like to move it to. How can this be accomplished? Up until this point I have implemented onClickListeners that never rely on another button in the activity to be clicked afterwards and wait for the user to do so.
Brief information on my project currently (unsure if needed):
I am currently using an ImageButtons array (of size 36) and a two dimensional integer array to hold the information of each of the buttons, as they are displayed in a GridLayout in a 6 X 6 fashion. In my MainActivity class I have implemented the OnClickListener and created a switch statement in onClick() for each of the button ids.
I am not sure how much more information is needed on my code for help or if it is completly irrelevant. I tried looking on the internet before choosing to ask finding nothing. It is always possible though I was not correctly phrasing my issue. Thank you to everyone in advance!!! :)
Without any code it is hard to say what you are doing wrong/right. But if you have the images stored in an Array then when they click on one image that can be put into a variable which is used to place on the View that they click on next. If you have a more precise question then please post relevant code and error messages from what you have tried, if any. Hope this helps
after a user click's a piece store that info in a member variable like a current piece and then on second click check if the previous is not null, the current clicked space is empty and start your animation by posting to a runnable implementation. this is the simple logic part. where are you having problem exactly
To optimize your code to change images what you can do is custom animations on the imageview. You can change the position of the image with animation without having to create or store an image. (If you use images bitmap a lot you have a very good chance of running into OutOfMemory exceptions and this will happen on top end phones very easily
How to Move a Button and Change the Button Image
I would put a single Button on every GridView position.
Then, I would use button.setBackground() and button.setVisibility() to display and hide the buttons with various images. In this way, the buttons will appear to move, but you are really just displaying a different button.
I recommend this because it is easier to change the visibility and image properties of a button than it is to actually move the button, although both methods are possible.
You will maintain a 1 dimensional array of images[n] and a 2 dimensional array of buttons[6,6].
As an example, suppose you want to move image[5] from grid position (1,2) to position (3,4):
// Hide the button at (1,2);
button[1,2].setVisibility(Button.INVISIBLE);
// Display the button at (3,4) with image #5.
button[3,4].setBackground(image[5]);
button[3,4].setVisibility(Button.VISIBLE);
Additionally, if your button images are stored in your resources, you could efficiently use button.setBackgroundResource(R.drawable.image-5-id);
The instructions above discuss how to move a Button, but now how to trigger one Button to be moved and then trigger the location into which to move the Button.
To accomplish this, you will have to define two states, such as:
private final static int STATE_PICK_BUTTON = 0;
private final static int STATE_PICK_LOCATION = 1;
private int state;
Initialize state = STATE_PICK_BUTTON;
When the system is in the first state STATE_PICK_BUTTON, all button
presses identified in your onClick() function memorize a grid
position to move from, and in some cases transition the system into
the second state: STATE_PICK_LOCATION.
When the system is in the second state STATE_PICK_LOCATION, all
button presses actually move the button from the memorized grid
position to the grid position of this button press.
Of course, you will have to do all sorts of error checking to make
sure you are allowed to move a button before triggering the state
transition.
Finally, the above suggestion may not work, because it may be impossible to click an invisible button. If this is the case, instead of changing the visibility of Buttons in empty grid locations, leave all the buttons Button.VISIBLE and use a fully transparent Button image for the buttons representing empty grid spaces.
I have a ListView backed by customized ArrayAdapter where each item has 2 LinearLayouts - one I call head, and the other one - body.
The body is hidden (gone) until user clicks on the row at which time it slides out. The second click (on the head) will hide the body. However if user clicks on the body it brings another activity. All of this works just fine, here comes the problem:
When user presses on body I want a visual indication of the action just the same way as regular list item will flicker an orange background when pressed. I'm not getting this by default since (my theory) the onPress event is intercepted by body's view and not processed by the list item.
The first thing I tried was to execute body.setBackground('#ff00ff') (never mind the color) in onPress event. That didn't work since (I suspect) there's no repainting after the call. Then I dig a little bit more and decided to use <selector/>-based background. I defined body_background.xml in drawable folder and assigned that to the body's background property.
There I noticed that background will only change if the even is processed by the list. For example if I set <item android:state_selected="true" android:drawable="#drawable/selected"/> then when I press on the head - the background of both elements (head and body) will change, however when I press on body - nothing.
So to summarize my question - how do I change background of the child element in the list item if I assign custom onClick handler to it? Any hints will be greatly appreciated
OK. Here's some more info I dig along the way.
I'm currently trying to switch implementation to ExpandableListView which provides the functionality I had to coded in (sliding body). The problem I may have here is that I have a fancy "endless" list implementation and I'm using ArrayAdapter#add method to dynamically add items to the list while scrolling (see my tutorial on androidguys.com) Well, the add method is missing from the BaseExpandableListAdapter so I need to see if adding items to internal array will work (it didn't for ArrayAdapter) possibly doing ExpandableListView#notifyChanged() will take care of that
The fact that I don't see anything when I'm directly using setBackgroundColor method is probably due to the subsequent call to startActivity call that halts all painting until new Activity is displayed
P.S. this has been resolved by switching to ExpandableListView. And may I add - it's beautiful! No need to invent anything