Android :: Switching Between Views Without Loosing OnClickListeners
Aug 29, 2010
On my application I'm developing, the main.xml layout (the default layout of my app) has a few buttons that have been assigned onClickListeners (not the implementation way). One of those buttons I want to have the ability to take you to another view. On the other view (preview.xml), there's another button that takes you back to the main.xml view. I've used setContentView in the onClickListeners of those buttons and this works fine so far, but after you click the button that takes you back to main.xml, the buttons on main.xml have lost their onClick functionalities. How can I get this to work right? I presume using setContentView isn't the right way to do this?
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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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Jul 19, 2010
I have an application using ListView inside Tabs, and I'd like to switch to a separate View(data collection widget) on clicking an item in the List.I'm adding each List's row's children to a ViewFlipper and the items are added at runtime so there is no definite number of views. As such, i would want to navigate/switch to a particular View in the ViewFlipper.Any pointers?
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Jan 15, 2010
I have developed some apps for Android, and this questions stays always:
How should I structure my UI? Should I launch activity after activity and leave the phone to make the "back" button, or should I choose more optimized, but more complex to implement, way with switching manually Views and then manually doing the "Back" button functionality?
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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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Jul 14, 2013
I'm currently developing an Android-app, in which I have already implemented an Slidingmenu (jfeinstein10's library). As above-views I have several activities I'd like to switch between with the menu-items in my Slidingmenu. For the most part, these activities consist of two fragments, a list and a content-view. In landscape-mode both are displayed, in portrait-mode only the list. Currently I'm switching between these activities with intents, which is not a very pretty "solution". How should I implement this?
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Feb 6, 2012
i am using canvas for 2D graphics using Views, Now i have to switch from one canvas to another Canvas.
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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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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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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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Oct 31, 2010
I am trying to implement pinch zoom and it is working but when i zoom out and then zoom in again the resolution of the image(bitmap) decreases. I am aware that this is just normal behavior of my code and i want to know how to do this with right way. here is the relevant code :
Matrix matrix = new Matrix() ;
float scale = newDist / oldDist;
matrix.postScale(scale, scale, mid.x, mid.y);
int width = mutable.getWidth() ;
int height = mutable.getHeight() ;
mutable = Bitmap.createBitmap(mutable, 0, 0, width, height, matrix, false);
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Apr 4, 2014
I am new on android and working with android version 4. I have develop an app for sending notification to all the devices registered through this app. So I am facing problem with buttons used in the app. Most of the time all the buttons are working fine. But sometimes these button are not doing anything, seems they are loosing there clickable functionality.
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Aug 3, 2010
I have had trouble retaining my 3g "mobile" access. It will work fine but then it disappears. I have tried turning it off and back on but the status sits on "turning on" forever. If I reboot, it works fine.
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Aug 27, 2010
Anyone know how long it will take for this to happen? I'd like to be able to installed the OTA without loosing root and having to wipe out my phone
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Aug 2, 2010
I have just noticed that I an now looking emails when I read them in the mail app (not gmail but the HTC mail). I have my mail set up to the pop on my googlemail account. I can go into mail and see my new mail, but if I then refresh all the mail will disappear. I upgrade to Froyo last night and prior to that all was well. I have not changed any settings on mail or my googlemail account.
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Mar 29, 2010
Ever since rooting my phone for the first time (and I have followed BH_MAN instructions to the last T) I have noticed one thing: I have root confirmed and it works great, but If i plug my phone to the laptop and use the SDCARD (transfer photos or music or etc...) after I unplugg (ejecting it properly first) and everything returns to normal in the phone, except that I loose root access. Better Terminal Says:
here1here2here3here4$
And until I reboot my phone root doesn't work again.
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Dec 6, 2009
When I reboot my eris, ATK shows me running at around 98-107 RAM memory, but after a while it seems to go lower. It falls like 10mb per day. It's day three since reboot and I'm at 71 with no apps running. My regular use is mainly web browning, txts, and calls. Do we have to reboot these devices all the time or am I missing something.
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Feb 27, 2010
I have had this Eris For almost 2weeks. I Work For verizon and Ive had the ability to Swap bateries and compare it to other eris. I went to bed the other night with NOTHING RUNNING, NOTHING app killer killed tham all, no wifi no bluetooth no PUSH on my emails, Nothing.. 30% when i went to bed at 330am DEAD when i woke up at 830am.. WTF MAN... My Iphone Kicks this phones ass in battery life (Words I never imagined to Speak) Ive set it next to a coworkers Eris for lil over an hour with Nothing running on either and after the hour i had lost 12% and his had lost 2%... I bought It from an ebay store and they have a return Policy which im still with in, Should i return or do any of you have/had this problem and know a fix... Its not the battery, ive tried multiple Batteries.. oh and we both had the Same Widgets on our phones so its not those. Thanks IN advance... its nice to come from working for att to verizon now if the phones only didnt give me issues...
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Mar 19, 2010
For some reason my ringer and notifications become disabled. Volume all the way up and not sounds from the ringer or email or system items. I can try and pick another sound but it never plays. Also the media is fine, music and videos all play fine. Only way I have found to get it back is to reboot the phone. Not sure if a program is causing it, but it is driving me up the wall and only happens every so often and it is not from a program I am running cause it is very random, and no one program causes it.
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Jan 15, 2010
Has anyone had any problems with videos loosing audio sync ?? It plays the first part of the files fine then after a few mins playing it appears to lose sync. Is there any max bitrate the phone supports? They are encoded from dvd at 1344kbs in mp4 format and 128kbs aac sound.
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Jun 29, 2010
Have just purchased the Jabra Clipper to use with my Desire as it is deemed compatible. It paired instantly and the sound was awesome. However, it is diving me mad as the headset keeps loosing the signal, sometimes totally and it is supposed to have a 10m range. I look like a plum holding my phone in front of me I am sure it is not the headset.
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Jul 2, 2012
How to solve my lww? I'm loosing my sound after installing beatsaudio,,
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Sep 27, 2012
My aunt has recently purchased a Samsung Galaxy Note and it has been unlocked. I've checked it and it is not rooted. She is on T-Mobile. The phone has been flashed to support T-Mobile's 4G HSPA+ network. I would like to update her phone to ICS via Samsung Kies but I'm afraid that her unlock will go away.
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Sep 2, 2010
I am not responsible if this does not work for your case or if you damage your phone in any way. This information is provided to attempt to help other people in the community that were having the same issues I was for the OTA. The way I did my OTA and got root back is this: (simplified version)
- install unrevoked 3, and unrevoked forevor (s-off)
- wait for OTA message
- click install later
- reboot into recovery
- do nand backup
- find and download stock 2.1 recovery zip file
http://adrynalyne.us/?p=41 (stock recovery is here)
- find and download (to a different location) clockworks mod zip file
http://unrevoked.com/rootwiki/doku.php/public/forever
(near the bottom of the page)
- place stock 2.1 recovery file on root of sd card
- reboot into hboot
- hboot will ask to install recovery update
- click yes
- reboot back to OS
- wait for OTA message
- click install now
- wait for 10-30 minutes while phone does OTA update
- place clockworksmod zip file onto root of sd card (overwriting/deleting the 2.1 stock zip file in the process)
- reboot into Hboot
- when asked allow hboot to update recovery again
- reboot phone
- uninstall any old super user program you had on your phone
- install this new one using the information on this link
[APP] Superuser 2.3.5 - Now on the Market [2010-08-28] - xda-developers
You should now have wonderful froyo with root!
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Nov 16, 2010
What's the easiest way to uninstall VooDoo without loosing everything (if possible).Rooted with clockworkmod.
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Aug 15, 2010
I have an unbranded unaltered HTC Desire Android Version 2.2 baseband Version 32.43.00.32U_5.09.00.20 Kernel Version 2.6.32.15-gf9c0527 htc-kernel@and18-2 #1 Build number 2.09.405.8 CL218634 release-keys Software number 2.09.405.8 Where do I start, bought it from CPW in May, no issues, no problems no reboots. Upgraded to Froyo last week and its doing my head in. I use the Google Navigation a lot, problem is now it keeps rebooting. Today I entered an address and it gained then lost GPS reception, took ages to get it back, then when it did it only lasted a few minutes then rebooted the Desire. I restarted navigation and it may pick up GPS then few seconds later reboot itself again, drove me nuts, to the point where I gave up and used OVI maps on my Nokia. On the way home 120 mile journey, entered the address and navigation was ok for about 20 minutes then it kept rebooting. Occasionally it would navigate for a couple of minutes then reboot itself, this again drove me nuts.
I then tried to eliminate possibilities and drove 1 hour with the Desire and Google maps on, but not navigating i.e just showing my movement on the road, I kept scrolling the screen to make sure the arrow was always shown, it worked faultless, no reboots data was downloading ok to form the route maps. I then put the navigation back on, and low and behold started rebooting and loosing GPS reception. This is driving me mad, as I need the navigation, everything else works ok with no issues. Is anyone else having any problems? HTC deny there is any known faults on the Desire, I am not going to put up with this, it is not fit for purpose. I think it must be software not hardware, but I am not sure, any help advice gratefully received.
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Jul 21, 2010
I was at work yesterday. Up at 3:30 AM, at work at 4. Phone was on entire time. At about noon the battery was at about 50%. I was very excited about this. I put my phone down for 20 minutes, came back and it was down to 5%? Drained the entire battery yesterday and let it charge overnight. Haven't seen any problems. Didn't have anything like this before the update. I did a reboot and took battery out as well to see if it was a false read, but nothing...
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