Android :: Swap XML Layouts During Runtime?

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?

Android :: swap XML layouts during runtime?


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Android : Swap LinearLayouts From XML During Runtime (droid)?

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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Android :: Building User Interfaces At Runtime With Layouts From Server

Mar 23, 2009

What is the recommended way to build user interfaces on the device based on layouts provided by a server at runtime? I am aware of this: <snip source="http://developer.android.com/reference/android/view/ LayoutInflater.html"> For performance reasons, view inflation relies heavily on pre- processing of XML files that is done at build time. Therefore, it is not currently possible to use LayoutInflater with an XmlPullParser over a plain XML file at runtime; it only works with an XmlPullParser returned from a compiled resource (R.something file.) </snip>

I could imagine these possibilities: - Parse XML by myself and build the ui tree. (Seems inappropriate to me since there is already maintained code which is able to do this.)

- Transform XML on server to a simpler format which is cheaper to parse on the device. (Inappropriate as above.)

- Preprocess the XML layout on the server the same way the build does. Transmit it to the client, and then try to load it. But how? android.content.res.XMLBlock is hidden (@hide) and I don't know how to classify the stuff in package com.android.layoutlib.bridge.

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Android :: Multiple Activites That Share 75% Of Layout - Layouts Within Layouts?

Sep 6, 2010

I'm creating a game where there's a screen that, for the most part, is shared by four different activites - but a key portion of the screen will be completely different, depending upon which activity is active. Basically, on the left will be an image of the player and along the bottom there will be a row of buttons (let's say for Armour, Weapons, Magic, Skills). This leaves the top-right portion, which will need to dynamically change to represent the button pressed. (So, one moment the top-right portion is the armour selection activity, and the next it's the weapon selection activity, and so on.)

Is this possible? Can I have a layout within a layout and dynamically point the nested layout at a (nested) layout.xml of my choosing? Or, am I looking at just duplicating most of the layout four times (for the four different activities?) Or, am I going to be looking at linking the four activities to a (the top-right) view component, and then having to dynamically construct all of *that* view's child views based on the currently active activity? Well, that's about as much sense as I can make this question make.

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Android :: Runtime Error Using Exported - Signed Apk But No Runtime Error Using Eclipse IDE

Mar 2, 2009

1) I am developing my app in Eclipse 3.4.1 with Android (ver 1.1_r1) plugin. My app compiles and executes without errors when using the Eclipse IDE.

However, when I export my app (unsigned) using Eclipse (via {select project} >right-click>Android tools>export unsigned application package), sign it, and try to run it on the Emulator, it throws a runtime error when I try to update my sqlite database, at which time the specific error created is: SQLite error#14, unable to open database. It is able to read from the database without problems. (I have also verified that the database is: open, is not readonly, is not locked by another thread, is not in the middle of a transaction.)

I have limited experience, but this seems more like a "system" problem given that the app works OK in Eclipse IDE but then fails as an exported/signed apk. Some googling of SQLite resources revealed a similar error on a non-Android platform which was fixed by: "Set your permissions correctly on /var/tmp, or whatever directory you are using to hold temporary files".

Does Android have temporary files, and if so how does it handle permissions on temporary files? Is there a way to check or set these permissions to see if this fixes my problem here?

2) Not sure if it is related, but after I have run the exported/signed app which causes the runtime error, if I reboot the Emulator, and try to run the program using the Eclipse IDE , the program fails with the same exact error. PLUS I also noticed the following error message while the program is installing/running: 03-01 22:22:29.282: ERROR/PackageManager(53): Package com.northwestradiology has mismatched uid: 0 on disk, 10019 in settings; read messages:

I can restore the Eclipse version of my program to be able to execute without runtime errors by utilizing the -wipe-data option for the emulator. But note that if I run my signed APK using an emulator created with the -wipe-data option, it still throws the runtime error listed above...

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Android :: Way To Swap Activities?

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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Android :: Layouts On Top Of Each Other

Sep 21, 2010

If I first set the content view to my xml layout using setContentView(R.layout.main); and then add another content view using addContentView(layout, params), the content views overlap each other. I want the second content view to position itself directly under the first one. Is it possible or do I need to combine the xml and the programatically created layouts in some way? Both of the layouts are linear.

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Android :: How To Swap To A Larger SD Card

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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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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Android :: Orientation Changes For Layouts

Oct 16, 2009

i have a layout folder with 2 layouts. layout1 and layout2 i have another folder layout-land that has layout1 in it. i would like to be able to get to all the layouts so i could create a set of layout like this: {layout1, layout2, layout1(from layout-land folder)}is there any way i can use the existing android mechanisim to do that? if not, what would be the impact of creating my own definition of the layout folder (for example to have under the layout folder layout1, layout2 and layout_land1 and have my code do getOrientation to diffrentiate whcih one should be presented).

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Android :: Dev - Placing Layouts

Aug 31, 2010

while making my application layout i want a button to remain at the very bottom of the screen while a scroll view is placed above it. I am unable to do this i was using the size of the scroll view as 430dp so that it works but when i change the orientation of the screen this does not work as 400dp is bigger than the screen. how do i make it so that the button stays at the bottom irresepective of the screen orientation ?

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Android :: Mix 2D Graphics With Layouts

Apr 26, 2009

I'd like to build an activity that is mixing layouts with 2D graphics. So for example, would like to introduce an edittext with an integer value and based on that value the size of a circle is dynamically adjusted and drawn. Any idea how to do this?

For plain graphics I am using this approach here - but how can it be expanded to cover Android layouts (buttons, editboxes, textviews, radiobuttons, etc.)?

CODE:..............

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Android :: Layouts Under Subfolders?

Nov 18, 2010

Is it possible to create subfolders under res/layout and place the layout XML files there so that one can call a view like setContentView(R.layout.questions.create); or setContentView(R.layout.questions/create); ?

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Android : Animation Across Two Layouts?

Aug 10, 2009

I've met a problem with animation when tried to make a View to perform the animation which should cross 2 layouts, e.g. make a translate animation so a view could move down to the TableRow below. This trick works fine when i try to move a view within a single TableRow but not when i try to move it up or down. I've also discovered that if i create a single RelativeLayout and apply the same animation there, it works fine, but i can't arrange all the components i need on the screen. Could anybody please provide me any hints about it?

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Android :: Animated Swap Position Of Two Buttons

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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Android :: Why Webview Swap Load New Url Only After Animation?

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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Android :: Swap Two Buttons Positions In TableLayout

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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Android :: Different Screen Sizes X Different Layouts

Apr 27, 2010

supporting multiple screens (sizes and resolutions). Ive searched not only this forum but many different websites and the android documentation but Im probably doing a small mistake so things are not working properly.

Well, my main layout was designed with a HVGA screen, and it works great. When I try the same app on a WVGA, FWVGA, WQVGA or FWQVGA, I always get an unused space in the end of the layout because the screen s "heightnes" is proportionally bigger than HVGAs.

So I consulted the documentation and decided to give a try on resource qualifiers, so I then created a nonsense UI and placed it on layout- large, created a new AVD using the WVGA skin and launched the app. Well, all I got was my old and not well stretched layout. The same happened to a FWVGA AVD.

This is the first problem. The second is: medium high density medium size screens and medium density large screens have the same resolution: how can I create a layout that is loaded for both, but not for (for example) medium size medium density or small size medium density screens?

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Android :: Listview With Different Rows (layouts)

Aug 13, 2009

I want to make a listview that has different rows (layouts). I will load the data from a webservice and it can be 2 or more layouts i have to generate then. I am creating a social network app and want to show a stream of the users activity. So when he made a comment, make a new friend, this all has to come in the same list.. I load 1 XML file with multiple different child objects (comment, friend) so i can see which layout i have to use........

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Android :: Rules For Inflating Layouts

Sep 28, 2009

i'm running into some issues inflating layouts and i wonder whether i have something basic wrong.i have a ListView with a custom adapter etc, and of course the item View is custom too. i've been creating the item View in code, and everything works fine, including recycling them and all that. great.but i want to move the View into a resource, where all good Android views live, and weirdness is happening.in the ListView's getView(), i get my inflater and inflate the view by ID. the view itself has its own XML file. i can inflate the top view, but i can't find anything by ID, and when asked for its children, nothing comes back.are there funky rules for inflating views this way? is there a convention for how this should be done inside a ListView?

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Android :: Localizing Layouts Like Por And Land?

Mar 24, 2009

Is it possible to localize layouts (in the same way you can have a 'por' and a 'land' layout? As you may know some languages are less 'verbose' than others, thus sometimes layout adjustments might be needed according to the current language.

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Android :: Way To Inflate Layouts With Different Density?

Oct 21, 2010

I'm wondering if it is possible to inflate a layout using a different density value than the default system density. I have a high density layout, which looks good on the Galaxy Tab (1024x600px, hdpi) and I like to use the same layout on another tablet with the same pixel resolution but medium density. The mdpi layout which is used works on the device but the screen just looks really empty and I would prefer to scale things up. So is there a xml argument for scaling the layout, maybe something similar to Bitmap.Options.targetDensity. Or could this be done with a new LayoutInflater class?

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Android :: Sliderbar Is Not Coming On Top Of Other Layouts / Fix It

Oct 14, 2010

I have a relative layout which contain 2 arrows after that i kept sliding drawer.when i press on slidingdrawer its coming only upto relativelayout.it has to occupy entire screen.

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Android : Using Multiple Layouts For Different Screens

Dec 3, 2009

I am getting my feet wet developing software for the Android. My test app will have multiple screens (each having their own layout file). The main screen will direct the user to view the other screens based on user input. I kinda see this as layers of cake. Bottom layer being main; then you add and remove layers as the user makes UI inputs. The crazy trouble is how to view a second layer. I have created a second class which has its own onCreate method, which has its on setContentView(R.layout.secondlayer).

This class extends Activity much like my primary class does. I have a click event on a button within the main layout. This button will instantiate the new second layer class which I have done. And that is where my story endsI don't know what to do from this point. This is surely a newbie question If someone has an example that would be extremely helpful teach me to fish and I will be on my way.

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Android : Layouts For Base Apps

Aug 27, 2009

Where in the source are the layouts for the built-in UI's?I would like to reuse (copy) a couple of the contact UI's rather than recreate the wheel.

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Android :: Changing Screens - Switching Between Layouts

Jun 1, 2010

I am trying to create an app for android 1.5 which would be organized around 4-5 'screen's that will be changing in a given order.

So I start ma app with the first screen, which it's background and a button. When I click on the button a new screen appears with a different background and different options which lead to next screens. Sth. that is usually seen in games. The problem is that I need to pass a lot of data between those 'screens' like and array with recorded sound. My idea was to create a separate xml layout file for each screen and change the context in the activity class so ie:

CODE:............

A simple test app for 3 screens works this way but my I don't really like this approach and it seems to be inappropriate.

Is this the correct way of organizing such an app in android or should I take another approach - if I should, please give a more detailed advice on how to do this.

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Android :: Multiple Screen Sizes - Layouts

Dec 16, 2009

I have created layout-large and testing against android 2.0.1 WVGA. however, its picking layout-normal. Can anybody suggest me what I am doing wrong. Even though, I have 3 layouts ( layout-normal, layout-large, layout- small), Its always picking layout-normal. why its so.

I added properties to manifest file

CODE:.............

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Android :: Use Motion Events With Multiple Layouts

Aug 22, 2009

I'm beginning in android development, and I've stumbled upon a problem. My application has different layouts stored in xml files, and I use motion events such as onFling or onSingleTapup. These motion events seem to apply whatever layout i'm in. My problem is simply identifying which layout i'm currently using so I can define the appropriate action. I guess what i'm trying to do is a bit like this:

@Override public boolean onSingleTapUp(MotionEvent e) { if(using main layout) { //do this } else if (using settings layout) { // do that } return false;

}

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Android :: Best Practice For Viewflipper Containing 10 Linear Layouts?

May 23, 2010

I'm embarking on a GUI Activity composed of a viewflipper, which I would like to contain 10 linearlayout layouts. Is it advisable to put all of my layouts into the same XML resource/layout file? If not, is there a more organized approach to coding a viewflipper with many layouts? Will having everything in the same file come at a significant performance cost?

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Android :: Tab View Initialization - XML File Layouts

Jul 2, 2010

I have a problem with a tab view on android. I am using 4 xml layout files (each a RelativeLayout) as the content for tabs in a tab view. The main.xml contains: TabHost (@android:id/tabhost) containing a linearLayout which contains a TabWidget (@android:id/tabs) and a FrameLayout (@android:id/tabcontent). If I embeded the multiple one after another in the in the main.xml everything works fine (except my main.xml is unmaintainable which is the problem I want to solve by splitting the files into a simple main.xml which defines the tab and the content frame and then push the views onto this). The code I have to inflate and insert the 4 RelativeLayout xml files into the tab content is as follows:

mTabHost = getTabHost(); View wv = null;
wv = LayoutInflater.from(this).inflate(R.layout.user_tab, mTabHost.getTabContentView(), true);
mTabHost.addTab(mTabHost.newTabSpec("User").setIndicator("User").setContent(wv.getId()));
wv = LayoutInflater.from(this).inflate(R.layout.track_tab, mTabHost.getTabContentView(), true);
mTabHost.addTab(mTabHost.newTabSpec("Track").setIndicator("Track").setContent(wv.getId()));
wv = LayoutInflater.from(this).inflate(R.layout.chart_tab, mTabHost.getTabContentView(), true);
mTabHost.addTab(mTabHost.newTabSpec("Chart").setIndicator("Chart").setContent(wv.getId()));
// And so on for the multiple tabs.

When I run this the first tab (User) is empty and the remaining tabs have all the content from all the views. So tab2 has the content from tab1-4, tab3 has the content from tab1-4 and tab4 has the content from tab1-4. Returning to tab1 it then has all the content from tab1-4 now. The code works just fine, the events on the various objects in the views etc all are good. It is just that they are all muddled together in the view. What is causing this and how to correct it?

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