How To Swap Views In Android Application
May 6, 2013
I created an android application project and have dug through the code and It is unclear how I'm going to set separate views for each list item. The original code is as follows
Code:
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_item_detail, container, false);
[code]...
On reviewing this code it is clear that the view hasn't been changed, only the content has been changed from the dummy item. I would prefer to have each dummyItem have its own view, layout, etc.The code for establishing these views are in the dummy content
Code:
static {
// Add 3 sample items.
addItem(new DummyItem("1", "Live"));
addItem(new DummyItem("2", "Settings"));
addItem(new DummyItem("3", "About"));
}
What I would like to do would be more like the following where each item would have its own view and layout.
Code:
static {
// Add 3 sample items.
addItem(new LiveDummyItem("1", "Live"));
addItem(new SettingsDummyItem("2", "Settings"));
addItem(new AboutDummyItem("3", "About"));
}
I thought there may be some type of container I can use to swap views in and out or possibly that I may be able to grab a view from the dummy item itself.
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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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Jun 20, 2010
I am new to developing for android. I have a question regarding some best practices. My app is like a dashboard from which multiple different "sub-activities" can be started and done. I am wondering what is the best way to structure the app. One way is to have different layouts and load and unload them appropriately. The other is to start new activities using intents. At least this is what I have gathered from what I have read.
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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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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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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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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 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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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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Aug 15, 2010
Right now I have 2 activities (A+B) and what I would like is for only 1 of them ever to be on the stack (If A shows B, I want the back button from B to go to the home screen not A). Is their a good way of doing this with activities Or should I change my app to be a bunch of views?
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Aug 23, 2010
Brand new to android, and loving it. But with the release of the Audible app and various music files, I'm going to fill my little 2GB card soon.
How would I go about switching to a larger capacity card? I'm not worried about data files, I know I can copy all of that stuff off the card, but what about any apps or app settings that might be stored on the card? If I simply copy the entire contents of the card to a new one, will everything "work" when I start the phone up? I confess I don't really know much about the android guts, but I'm willing to learn!
Phone specs:
1.) Model Number: Samsung Intercept SPH-M910
2.) Firmware Version: 2.1-update1
3.) Baseband Version: S:M910.05 S.DF27
4.) Kernel Version 2.6.29
5.) Build Number Samsung ECLAIR.DF27
6.) Carrier - Sprint
7.) US
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Jul 27, 2010
Is it possible to load my main.xml layout file in onCreate() and then later in the app, switch to a new XML layout? I've tried placing setContentView() later on in the app but that seems to not actually set the new View because my references to objects in the newly set xml layout file are returning as null. I've tried doing some layout inflating using the LayoutInflater but I'm having no luck (I'm probably doing something wrong)... So is there any other way to swap layout xml layouts at runtime?
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Nov 6, 2009
I am trying to swap the position of two buttons. My swapping code looks as below.
private void exchangeButtons(Button btn1, Button btn2) {
// Create the animation set AnimationSet exchangeAnimation = new AnimationSet(true);
TranslateAnimation translate = new TranslateAnimation(Animation.RELATIVE_TO_SELF, btn2.getLeft(), Animation.RELATIVE_TO_SELF, btn1.getLeft(),
Animation.RELATIVE_TO_SELF, btn2.getRight(), Animation.RELATIVE_TO_SELF, btn1.getRight() );
translate.setDuration(500); exchangeAnimation.addAnimation(translate);
// int fromX = btn1.getLeft();
// int fromY = btn1.getRight();
// int toX = btn2.getLeft();
// int toY = btn2.getRight();
Log.d("ArrangeMe", "view1 pos:" + btn1.getLeft() + ", " +btn1.getRight() + "view2 pos:" + btn2.getLeft() + ", " + btn2.getRight());
AnimationSet exchangeAnimation1 = new AnimationSet(true);
TranslateAnimation translate1 = new TranslateAnimation(Animation.RELATIVE_TO_SELF, btn1.getLeft(), Animation.RELATIVE_TO_SELF, btn2.getLeft(),
Animation.RELATIVE_TO_SELF, btn1.getRight(), Animation.RELATIVE_TO_SELF, btn2.getRight());
translate1.setDuration(500); exchangeAnimation1.addAnimation(translate1);
// EXECUTE
btn1.startAnimation(exchangeAnimation);
btn2.startAnimation(exchangeAnimation1); }
I call the code as below:
exchangeButtons(button1, button2);
My layout looks as below:
what happens when I execute the code is, instead of the buttons exchanging their positions, they just disappear for sometime[may be 500 ms] and reappear as they were originally.
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May 8, 2009
I need to load several url to a webview in animated transition. i used 2 webviews; prev_view and next_view. if we click on next button, next_view will appear with right to left animation covering the prev_view underneath. on back press. next_view will move left to right showing the prev_view. as i have 100 urls(local html files) to load on webview, each time i need to load new url while animation but it does animate the old one and after animation end shows the new url. is it possible to disable the cache and load new url while animation?
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Jul 21, 2010
Suppose I have the following layout
CODE:......................
How could I swap position of button01 with button02? And would it work also for swapping button01 with button05?
Before asking what I have tried so far, I don't even know where to start. I googled but the only answer I could find was about AbsoluteLayout.
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Feb 19, 2010
I am trying to create an option in my code to change layouts using preferences. I already have the two layouts created in XML, but I can't figure out how to swap between the two during runtime. I would like to cause it to check during onResume() since it is called directly after returning from the Preferences screen and when starting up, however I can't figure out the code necessary. I tried just using setContentView() a second time, but it didn't seem to work. What can I do?
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Oct 27, 2010
What does it buy you?
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May 28, 2010
Probably really simple, but how do you swap calls over if another call is coming in on the hero? All I end up doing is disconnecting both of them?
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Jun 10, 2010
I heard that the 8gb sd card that came with the evo had some files on it that were used to boot the phone. I want to upgrade to a 16gb card. do I have to do anything spiecial to swap them out?
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Dec 13, 2012
is it possible to use swap on a sd-ext partition? I started to use simple 2ext and I don't know if it's that possible.
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Oct 29, 2012
I am using cm7 nightly on my galaxy ace, I have swap partition, ihave A2SDGUI and this script, catch to sd working, but swap not working.
How can I enable swap?
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Nov 10, 2012
I rooted My My micromax A87 with XDA and I was Succeeded in It, and then I Partitioned my SD Card into three,(FAT-32 + EXT 3 + Linux Swap) with Parition Mini Tool.then I Installed Link2SD and Swapper 2 its all fine but microsd is too slow to Link and Swap because its (Class 4).but it run the temple run and some HD Games with Small Lag.
So I Experimented with other swap tools like "MemoryInfo & Swapfile Check and ROEHSOFT RAM-EXPANDER (SWAP)"and then Uninstalled these. but there is the problem starts. Now in my A87 it shows a swap cache always on. I opened adb shell and look for free.
I wonder that there is a swap file generated around 50 MB but I cant see it in my External SD or Internal Memory.So I Removed my SD Card and then check again, Still I see the same swap value 50 MB.
My Internal memory has no change in the value (available space not reduced) it looks like the same value before I Install the MemoryInfo & Swapfile Check + ROEHSOFT RAM-EXPANDER (SWAP).
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Jun 15, 2010
I have just done a SIM swap on my o2 desire to see if this will help with the reception I get, do you think it will work?
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Nov 20, 2010
I know this is going to sound absurd, but would it be possible to for instance, buy a 4.3 inch (S)AMOLED screen and swap it with the DHD one?
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Jul 19, 2010
Can I just swap the SD card from my Droid to my X when I get it today, and restore the apps with Astro File Explorer? Or, is there something specific to the Droid on the card that would cause a problem?
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May 28, 2012
I would like to know why swap size when partitioning is 0mb usually.
HTC Explorer A310e.
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Dec 31, 2013
I just took over a second hand chinese android phone which appears to have swap enabled already.
The following is on the phone with SD card installed or removed completely
Terminal Emulator - Free - swap 196604 53036 143568
Diskinfo reports it as zram0 [swap]
The value of swap changes continually, so swap is active.
There is no swapper or any other swap app installed. How do I go about finding out how the phone is configured and if necessary undoing what was done and reconfiguring if necessary ?
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Oct 12, 2013
I have bought a titanium s5 and I am facing a problem in installing big apps on my titanium s5 as it has only 1.4 gb internal memory. I don't want to root so how to swap internal sd card with external sd card without rooting.
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Mar 30, 2013
I currently have a phone based on mt6577 where I started to modify the kernel to improve performance but I have a big concern about the swap. I want to enable zram.I turn on when I swap it ends up freezing the system reboots instantly or with a random delay. Kernel 3.0, 4.0.4 ICS
I tried to create a swap file system, the result is the same.I have been looking for a while or could be the problem but without result.
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Nov 24, 2012
I have a problem with the swap partition on my device, Xperia arc. I flashed my device to "LT15i 4.1.B.0.431 Generic Global World" follow by this post. I found that lacking in memory so I tried to use swap partition and created 256 Linux swap partition on my SD card. But "free" commend still shows swap=0 However, I decided to use swapper 2. Still no effect and I couldn't get swap although swapper did its job without fail! After few days search I found that the kernel doesn't support the swap, So, I tried to use "Kernel.sin unpacked and added CWM options" form here. It also didn't work, neither "init.d zram scripts from wedgess" from the same page.
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