Android :: Create Multiply Views Screen?
May 23, 2010
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).
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Feb 28, 2010
I want to populate a table, defined in layout xml file through the programmatic way. I have define Table with a single row defining its header, with all the attributes set. Now i want to know a way so that i can just replicate that header row in the table with new content.
I tried using inflator inflate(int,view) method, but at runtime it showed up with error.
Here is the XML code for the layout file defining the table
CODE:.................
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Jun 29, 2010
I want to create a full-screen page that looks like this:
---------------------------------------
| -------- --------------------------- |
|| || TextView ||
|| | --------------------------- |
|| Image | ----------------- -------- |
|| View || || ||
|| || TextView || ||
|| || || Image ||
|| || || View ||
| -------- ----------------- | ||
| --------------------------- | ||
|| TextView || ||
| --------------------------- -------- |
---------------------------------------
where each ImageView takes up at most 20% of the parent layout's width.
Primary question: Really...what is the best way to do this? After hours of searching, the best idea I can come up with is to get the screen's width and simply set the views' widths to be a max of 20% of that. However, this intuitively does not seem like a best-practice solution. (Eg. if the application wasn't running in full screen, this solution wouldn't work.) A LinearLayout won't work with the way the page is laid out (appears I have to use a RelativeLayout). And I think it would be preferable to set the views' widths based on the parent view's width (as opposed to the screen's width), but I'm not clear on how to do that either, because at the time that I'm trying to set up the widths of my children views, parentView.getWidth() returns 0. Does anyone have any good, clean solutions for how to create a page as shown above?
Secondary question: Does anyone know how to wrap text around images as shown above? After still more hours of searching, I couldn't find a solution for this; seems like you need to stitch together a couple of TextViews. Is there a better way that I'm missing?
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May 19, 2009
I am creating one quiz application, for question page i have created one view by using Linear layout in that i have added four TextAreas, first TextArea for question and reaming three are for answer cell. so now, when user select the answer cell i want to show next question screen for that i am thinking of creating new view. means some questions may have two answers so i want to create that at run time. how to create new view at run time ? and how to switch for new view.
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Mar 13, 2013
I have just finished my first android app in Eclipse. It is an app, which contains more activities, more pages. Everything seems to work when I click on the button I go to an other page. And back.
Now the problem is, when I export the android app as an .APK file. Drag it to my tablet and install it with Astro File Manager, all the activity's come on the application screen as different apps.
Every activity has its own icon (like 80 different activities) . But when I click on any activity icon, the app works perfectly.I only want 1 application icon that starts with the main activity.I thought there was something wrong in my AndroidManifest.xml file so I putted a little bit of the code below.
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="schemas.android.com/apk/res/android"
package="com.evi.TerrazzaIlfb"[code].....
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Jan 22, 2010
There is a given set of predefinied Views that can be used in layouts for AppWidgets. How can a customized View added to this list?
The minimum requirement is that the class is annotated with RemoteView. What else is necessary to be acceptable as view in the layout.xml?
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Mar 18, 2010
I have a case where I have add to listview textview based on no of messages.
1) I am doing like this for.
CODE:..............
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Oct 2, 2010
I am parsing the url to display the contents in it, my requirement i have to display the each content in separate textviews.
For Instance: Let us assume the contents in that url are FootBall, Carom , chess, VolleyBall and so on . I want to display FootBall as a individual textview similarly others. so i cannot declare the textviews in xml what i usually do.
CODE:................
So i planned to create textview via java code
This is my parsing code which parse the url contents and store the result in a string array namely san_tagname; depending upon the length of this variable i want to create number of textviews.
CODE:..................
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Oct 15, 2010
I am trying to dynamically create a interface using a relative layout. I would like to align different views with each other and am finding the need to know the id of a previously created view so that I can use them in subsequent layout params.
Is there a preferred or best way to generate or create ids for views that are created dynamically?
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Jan 6, 2010
I have a simple ListView and on that ListView I have placed a number of custom defined Views. The CustomView has ImageView and two TextViews.
The CustomView also has a "stateful drawable" as background, so that the background image (a 9-patch) changes if you press the Row in the ListView. When pressing the Row, the background image changes to a Red-ish thing.
The problem is that when the background changes from the default greyish, all the Views in the CustomView (ImageView and TextViews) still have their greyish background and thus creates very ugly greay boxes on top of the now redish background.
What is the best way to solve that problem? I hoped that such things were handled automatically (as it is done in for example .NET), but I was wrong it seems.
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Mar 5, 2010
What this looks like is on the left and what I want it to look like is on the right.The obvious answer is to set the TextView to fill_parent on height but this causes no room to be left for the button or entry field. Essentially the issue is that I want the submit button and the text entry to be a fixed height at the bottom and the text view to fill the rest of the space, similarly in the horizontal Linear layout I want the submit button to wrap its content and for the text entry to fill the rest of the space.If the first item in a Linear Layout is told to fill_parent it does exactly that, leaving no room for other items, how do I get an item which is first in a linear layout to fill all space apart from the minimum required by the rest of the items in the layout?
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Nov 16, 2010
I am implementing a music player application in Android. My play list selection screen is implemented as a tab selector widget which contains a ListActivity inside each of the tabs: Artist, Albums, Songs.
I want to update the ListView in each of the ListActivity when I delete an item from any of the lists.
i.e. When I long press an item in the Artists list a context menu is drawn with "Delete Artist"
And it should delete all the songs from this artist in the Songs ListView, delete all the albums by this artist in the Albums ListView, and finally delete the entry for the artist in the Artist ListView.
Each of the ListActivity has its own fillData() method, which updates the ListView when the button in the context menu is pressed.
How can I call the fillData() method of the Albums ListActivity after I update the ListView inside of the Artists ListActivity?
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Mar 6, 2010
I have the following XML code:.................
The idea is to change the views, whenever I press one of the radio buttons. When I press a button the first time everything works out fine, but the second time I press a button, I get an IllegalStateException, and I can't quite see why I'm getting this.
Also, the Activity seems to set all my global variables to null, which is why I have to create them every time I switch from portrait to landscape or vice versa. So I would like to know if there is a way I can save my views in the Bundle, or any other way in which I can permanently save my views, so I don't have to add or create them every time, I flip the phone. And whenever I flip the phone, it seems that it rereads the main XML file, causing the RadioGroup to be set to 2D even if the 3D button is checked. This is because I've said the 2D button to be checked from when the app is first created, but I would like to also save the state of that RadioGroup.
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Mar 9, 2010
Is there a way to switch views in a ViewFlipper just like on Home screen, where we have small dots at the bottom of the screen and on clicking on them we can switch views.
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Feb 3, 2010
Can anyone give an idea how to identify the views part of the active screen[i.e current running activity on the phone].
E.g after launching uiEditContactActivity,how can I identify the views [ several fields, buttons etc] part of that screen.
I am trying to modify monkey, such that for creating a contact, it should launch Edit Contacts Activity and fill the respective views [name, number etc].
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Jun 16, 2010
How do you align views relative to the "middle" part of another view? I think it is best explained with a pic of the UI I'm trying to create in android.
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Jan 24, 2010
I have a 3 nested ViewFlippers which seem to be working ok except that when I change the screen orientation the view flip back to the first one of my views, giving the user the impression it went back a few steps.I am a bit stumped as to what to do and was hoping someone had some experience with this.
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Oct 8, 2009
I am writing an android application that has 3 views one below the other. Each view has to be of equal height, depending on the screen size. Each view occupies the full width of the screen. How do you specify in the layout xml that the view has to take up 1/3rd height of the device display height? What would be the appropriate layout to use in this case?
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Aug 22, 2010
I've successfully implemented onRetainNonConfigurationInstance() for my main activity to save and restore certain critical components across screen orientation changes.
But it seems, my custom views are being re-created from scratch when the orientation changes. This makes sense, although in my case it's inconvenient because the custom view in question is an X/Y plot and the plotted points are stored in the custom view.
Is there a crafty way to implement something similar to onRetainNonConfigurationInstance() for a custom view, or do I need to just implement methods in the custom view which allow me to get and set its "state"?
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Apr 25, 2009
I have TabActivity that uses 2 other ListActivities for the tabs. Both underlying ListViews are set to CHOICE_MODE_MULTIPLE. When I run the following sequence of events, I get a strange result: 1) Setup one activity (tab) and its ListView using a CursorAdapter, including checking some items on the list 2) Reorient the screen (open the keyboard) 3) Setup the second activity (tab) and its ListView using a CursorAdapter, including checking some items on the list 4) Switch back to the first tab
At this point, I can see in Eclipse that although (of course) each ListView is a distinct object, the internal variable used to store the checked state of items, called mCheckStates, is the SAME OBJECT REFERENCE in each of the ListViews.
Clearly this is an issue, since the two views should not share the checked state of items between them.
If I skip step #2, this does not occur
Here is a bit more detail:
After Step 1: ListView1 is object reference @1, ListView1.mCheckStates is object reference @2
After Step 2: ListView1 is object reference @3, ListView1.mCheckStates is object reference @4 (the reorientation recreates the views)
After Step 3: ListView2 is object reference @5, ListView1.mCheckStates is object reference @2 <-- note the reuse of this reference from step #1, not sure how/why
After Step 4: ListView1 is object reference @3 (unchanged), ListView1.mCheckStates is object reference @2 (changed) <-- same as ListView2.mCheckStates
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Jan 25, 2010
Is there any way to query a root view of an activity for all of its child views even before the root view or its children have been inflated? I guess what I'm looking for is whether a view knows ahead of time what children it will have before it gets inflated, and can I get that list in some way. Bizarre I realize, but I think it will help me with some unconventional automation testing I'm working on. I haven't found anything in the API like this.
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May 6, 2009
I am trying to create an activity layout that has a top level vertical linear layout like so:
CODE:................
This works ok as long as the wordDefinition text isn't very long. But, when I set the text to something very long, it pushes the back button off the bottom of the screen. Why? Isn't the ScrollView supposed to scroll the text in the child TextView?
I've tried playing with weights (e.g., giving the top text view a weight of .2, the scroll view a weight of .7 and the button a weight of .1, but to no avail.
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Mar 7, 2010
Let's say I have a LinearLayout, and I want to add a View to it, in my program from the Java code. What method is used for this? I'm not asking how it's done in XML, which I do know, but rather, how can I do something along the lines of (One View).add(Another View) Like one can do in Swing.
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Sep 2, 2010
I create lables textboxes and buttons with the help of textview and buttons..! Now i need to connect the database , If I click the login button it will connect the database and validate it.
If validation i need to show home screen..!
1) If i click the back button it wont show login screen
2) While click the login button i need to show process dialog
How can I achieve these..I am eagerly waiting..!
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Nov 23, 2009
Does any one know how to create an app that can change/replace the default lock-screen?
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Sep 28, 2010
Is it possible to create a view that is bigger than the screen? I need a view that has a bigger width then the screen of the device. I use this view in a rotation animation. During the rotation the parts that were not on the screen before animating the view will become visible.
Is there a way to achieve this effect with the android framework?
I tried to set my parent layout much bigger then the screen and it is working. This will make somethings a little bit uncomfortable but it could work. The next problem now is that my layout still starts at the left side of the screen. I can't think of a method to make the layout to expand itself to the left and the right of the screen.
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Jun 21, 2010
I've got a few questions about edittext..
I'm trying to create a login screen on Android. I'm taking in a username and a password and then sending the results to another method. I've just got a few questions about it...
1) If I have two edittext's and the user enters values in both and then hits a "login" button, I want the button to take the values that were entered in the 2 edittext boxes, convert and save them to a string and then pass them to a function. I'm unsure how I'd construct this button. The problem I'm having is making it a string I'm currently doing this.. String user = edittext.getText();
But that doesn't seem to work. Also I'm unsure what way Android saves Edittext inputs.. Will it just automatically save it to the string once the user is no longer working out of the box? e.g will...
CODE:........
work? If not how would I define it?
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Jul 15, 2009
When a call is in or out,I need to display another screen,not the system's.Is there any sample here?
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Nov 7, 2010
How to create multiple View in one screen?
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Oct 29, 2010
I'm trying to create a MapView in a service (live wallpaper), but have it hidden so that I can render it to a Bitmap, and then map it to a texture to render in opengl. I have a Canvas and a Bitmap, and I intended to call myMap.draw(myCanvas) in order to get it into the correct bitmap so that I could then bind it as a texture.
When I Initialize I do the following:
myMap = new MapView(ctx, APPSTATICS.MAP_API_KEY);
I get an error:
java.lang.RuntimeException: stub at com.google.android.maps.MapView.<init> (Unknown Source)
Why I can't create a new mapview which I can use to draw to a offscreen bitmap?
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