Android : Add Controls To A Tab Layout In Droid?
Apr 5, 2010
I am following this tutorial http://developer.android.com/intl/de/guide/tutorials/views/hello-tabwidget.html and have completed it. Now I would actually like to add you know some controls to these tabs like textboxes(text edit).
How do I do this? I go to my mail.xml using eclipse as my ide and go to layout view and I now get a NullPointerException so I can't even drag stuff onto the layout anymore.
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May 19, 2010
I'm attempting to add four controls to a layout; <label> <text> <seek> <radio> I want the seek widget to occupy all the available screen space between the edittext control and the radio control. However if I give it the value android:layout_width="wrap_content" only a small seek control is displayed and if I set the value to fill_parent it overwrites the radio control. I would have thought there would be a mechanism to occupy the free space between the text and radio controls dynamically. The xml file I am using is below You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscribe@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
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Apr 21, 2010
How do I change the size of the controls placed in a layout? (by any method) I tried to change the height of an EditBox ->setHeight(10); doesn't seem to work.
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Jun 2, 2010
Is there a property to set for Android's LinearLayout that will enable it to properly wrap child controls? Meaning - I have changeable number of children and would like to layout them horizontally like:
Example: Control1, Control2, Control3, ...
I do that by setting:
ll.setOrientation(LinearLayout.HORIZONTAL);
foreach (Child c in children) ll.addView(c);
However, if I have large number of children, last one gets cuts off, instead of going to next line.
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Jun 25, 2009
I would like to create a custom Control in my Android App. It will be a circular control with some smaller moveable circles that will indicate a specific value.
Is there a way to realize this?
Are there at least some nice Tutorials where i can read how to create a custom control?
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Dec 23, 2009
Is it somehow possible that instead of:
Button btnNextWord = (Button) this.findViewById(R.id.btnNextWord);
Eclipse automatically generates for me something like:
Button btnNextWord = this.btnNextWord;
or
Button btnNextWord = R.id.getBtnNextWord(this);?
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May 14, 2010
I want to zoom text that is displayed at center of screen as per user choice. How can I achieve this ? Using pinch multitouch cannot be tested on emulator and I want something that I can test on Android emulator.
Can I use zoom in and out controls to control only text view for my layout ?Or Can I use webview to contain a text as webview has default zoom in out buttons ?
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May 17, 2010
I am developing an application, and I want to make it work on different resolutions and different densities. My question is how to position the controls through code such a way that it works on all resolutions.
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May 23, 2010
You can move between fields with the track ball.
As the title says I am looking forward to know how to I set the tabbing order of controls in Android?
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Sep 10, 2010
I have a custom list adapter contains a layout with controls in it. I was wondering how I can get each individual controls id? I am planning on changing the color of some textviews. code...
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Apr 23, 2010
I am learning how to program on Android phone. However I am unsure how to make my application work for the different screen sizes and resolutions.
I read the tutorial on the android site and still unsure how to do it.
First I know there are different files so could make a layout for each of the sizes but my problem is most of the screen needs to be dynamically created so there would not be much to put in these files.
So I am not sure how to android to re size dynamic controls based on the screen size.
I have also read it is bad practice to make controls in anything but the xml file as it separates view logic and programming logic. However they never talk about if you need to make these controls dynamically what you should do.
So is there some other way to do it that is considered good practice?
Edit
I get this error when I try to run the switcher application.
[2010-04-27 12:06:41 - ViewSwitcherTest] ActivityManager: Error type 2
[2010-04-27 12:06:41 - ViewSwitcherTest] ActivityManager: Error: Unable to connect to activity manager; is the system running?
[2010-04-27 12:06:41 - ViewSwitcherTest] ActivityManager: usage: am [start|broadcast|instrument|profile]
[2010-04-27 12:06:41 - ViewSwitcherTest] ActivityManager: am start [-D] INTENT
[2010-04-27 12:06:41 - ViewSwitcherTest] ActivityManager: am broadcast INTENT
[2010-04-27 12:06:41 - ViewSwitcherTest] ActivityManager: am instrument [-r] [-e <ARG_NAME> <ARG_VALUE>] [-p <PROF_FILE>]
[2010-04-27 12:06:41 - ViewSwitcherTest] ActivityManager: [-w] <COMPONENT>
[2010-04-27 12:06:41 - ViewSwitcherTest] ActivityManager: am profile <PROCESS> [start <PROF_FILE>|stop]
[2010-04-27 12:06:41 - ViewSwitcherTest] ActivityManager: INTENT is described with:
[2010-04-27 12:06:41 - ViewSwitcherTest] ActivityManager: [-a <ACTION>] [-d <DATA_URI>] [-t <MIME_TYPE>]
[2010-04-27 12:06:41 - ViewSwitcherTest] ActivityManager: [-c <CATEGORY> [-c <CATEGORY>] ...]
[2010-04-27 12:06:41 - ViewSwitcherTest] ActivityManager: [-e|--es <EXTRA_KEY> <EXTRA_STRING_VALUE> ...]
[2010-04-27 12:06:41 - ViewSwitcherTest] ActivityManager: [--ez <EXTRA_KEY> <EXTRA_BOOLEAN_VALUE> ...]
[2010-04-27 12:06:41 - ViewSwitcherTest] ActivityManager: [-e|--ei <EXTRA_KEY> <EXTRA_INT_VALUE> ...]
[2010-04-27 12:06:41 - ViewSwitcherTest] ActivityManager: [-n <COMPONENT>] [-f <FLAGS>] [<URI>]
To your question: It's dynamic because
the buttons in my example grow and
shrink depending on one of the 3
possibles sizes, because they use
scaled pixel (You probably know that
you don't have to deal with screen
sizes itself). So a scaled pixel
compared to a real a pixel has a size
of 0.75px, 1.0px or 1.5px. Android
automatically and dynamically adjusts
it to the actual size. So you don't
have to care about this in your code.
So if I use scaled pixels then I don't have to worry about different screen sizes?
At the moment I don't know an example
except in games where you have to deal
with "real" pixel. But if you want use
it, multiply it with the value of the
current density. This is your "ratio".
I don't have the example with the ball
anymore but I have another which uses
the same technics. You can run it on
different screen sizes and you will
see that the buttons will always fit
into the layout. You could use the
same technics for your intents. In
this example you can scroll with the
"Scrn" buttons from one view to
another of 4 views. (At the moment
they all have a black background so
you don't see that they are different
views). The "Enter" button exits the
test. It's an Eclipse project. You can
download
So if I want to deal with ratio then I use real pixels and not scaled pixels? What advantage does this give me?
will scaled pixels work with changing from portrait to landscape( ie will it fill up the new found space)?
Finally should I make the controls now through code or is there another way? As I said I am getting data from a webservice that must look like this
checkbox label label
It can be one record or 10,000 records I don't know so these have to be appended to something that is like a window panel( the controls in there get a scroll bar).
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Sep 18, 2010
I am able to play a video using VideoView in combination with MediaController. The problem when I started my activity , a bar appears below with media controllers play,pause,rewind ,progress bar representing video. But it disappears after displaying 1 second. Then I how can I make this media Controller bar with controls to display as long as my video plays so that I can pause,rewind my video.
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Jul 29, 2010
Like many, I've had a real problem with a loose headphone jack on my Droid. As the jack gets moved (bumped in my pocket, for example) it causes the music player to turn on/off, which is super annoying. To describe it better, if I were to hold onto the headphone end piece where it connects and move it around, I can trigger the music on and off...it must be moving the connector inside somehow. Had the Droid replaced once. New Droid - same issue. New idea --- Is there any way to entirely disable the headphone's ability to control to Droid? My thought is that if I can turn that off altogether, it will no longer be a concern that it's loose.
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Nov 6, 2010
When I first started using Pandora I was able to pause, forward and rewind from the lock screen.I don't know what happened, but it's not there anymore.How do I get it back?I'm not rooted, using the stock lock screen and launcher pro plus.
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Dec 17, 2009
Does the Droid have individual volume profiles for the different devices (like bluetooth, speaker, headset, headphone jack)? My old phones would 'remember' the volume level for the different devices used. Its very annoying to have one single volume setting. For example, I usually have the speaker phone volume all the way up, then when I answer a call, the earpiece volume is deafening. Same when I plug in my wired headset at home.
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Sep 9, 2010
Is there a way to set the physical buttons on the side and front to do things when the screen is off like go to the next song or volume up? It would be great for when I am listening to music that way I don;t always have to turn the screen on and unlock just to turn the volume up or down.
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Sep 7, 2010
I haven't found a solid answer for this yet.What I want is simple: music controls on the pattern lock screen.I don't want Widgetlocker or another lock screen replacement, which have given me problems and don't seem to be reliable. I just want to be able to pause/play/skip from the pattern lock screen.I am okay with binding physical buttons to this task if that's what it takes.
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May 9, 2010
I am currently running the leaked version of 2.1 from way back.I am now trying to install 2.1 v3.I have followed all the instructions, but when I turn my phone of, the hold vol down and end keys, nothing happens.It begins unzip, then stops, and just sits on the menu screen.Any ideas?
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Mar 11, 2010
I've been looking for a couple of days and haven't found anything worth trying. I also do not like in-the-ear buds and would prefer something that goes over the ear.
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Oct 22, 2010
I'm running Sapphire 1.1.1 and like it so far. Coming from Cyanogen, I'm mostly interested in the music volume rocker controls for skipping through songs when the screen is off. I know the problem with Sapphire has typically been that the volume rocker controls sometimes continually skip through songs when the button is pressed, but mine seems to only start the current song over. Anyone else have this problem? The lock screen controls work fine, but I'd like to get the volume rocker working correctly so I can keep my eyes on the road when driving.
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Jul 1, 2010
I tried running the ported HTC music app from xda yesterday on my BB v4 and got FC's. I'd love to have this on my phone since it plays genre's. Anybody have any success with this or have an updated version ready for froyo? Also, is there a way to get the CyanogenMod volume up/down music controls when the screen is off onto BB v4? It's really the only thing that I miss. I don't know the "rules" of ROM's sharing, etc. certain scripts or whatever.
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Aug 25, 2010
Tried looking around but couldn't find what i was looking for/people didn't respond to the other posts... so is it just me or is it super hard looking for a good music player...
currently I'm using cubed but i dont like it. people swear by it but im not following. its seems a bit clunky, it scrolls terribly, and i dont like the lockscreen controls.
for my question. i can deal with a music player like cubed BUT I'm looking for a music player with lockscreen controls that doesn't disable the timer/alarm notices. the lockscreen controls with cubed is $#!t. you press "unlock" even by accident and it unlocks (dont like that). and it doesn't even show you the time, so i have to completely unlock the phone and lock it again just to view the time. AND i cant see when my next alarm is going to go off. really inconvenient.
Does anyone know of a music player that has lockscreen controls that does not disable the clock/alarm notices when you wake up the phone before you unlock it?
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Sep 1, 2010
So I use my X to stream pandora/slacker and the droid media player through my ford sync bluetooth system. I am having two separate issues I am hoping someone can comment on.
The first is that pretty much every other time I try to stream music I do not get any sound. I have to reboot my phone for it to work. Everything is paired correctly and volume it turned up etc. This is my 2nd X and they both did the same thing. Happens on 2.1 and 2.2 leak
Second is that my steering wheel controls randomly work. Sometimes the music player doesn't skip sometimes it does. Also recently if I have pandora or slacker playing and I press the skip forward button on my steering wheel the droid music player starts and I get both slacker/pandora and the droid music player playing at the same time. I should also mention i am on the 2.2 leak.
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Aug 14, 2010
While developing for Android, I am unable to open more than one main.xml file in an Eclipse editor at a time.Each time I open one, it simply replaces the editor (tab) of the first main.xml with the new one, instead of opening a new tab - even if the contents of the existing tab were unsaved.Even stranger, I can open multiple main.xml files from different projects with no problems.This only happens when they're within the same project.
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May 4, 2010
I am new in android, i am having few problem in layout alignment. I have divide the screen into three layout,as header, body and footer. I am giving the height dynamically for the three layout in java file, so i need to give 12% of height to header and footer layout, and the remaining 75% i need to assign height to body layout. For that i have made the calculation as follow
first i am getting the height and width for the screen. With the help of the screen height i am getting the 12.5% height for header and footer layout
WindowManager w = getWindowManager(); Display d = w.getDefaultDisplay(); int totalwidth_screen = d.getWidth(); int totalheight_screen = d.getHeight();..................
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Jan 23, 2009
Is it possible to build a GridView object in XML with 3 columns and 4 rows of Image buttons? It doesn't seem to have similar containment relationship like LinearLayout or RelativeLayout viewgroups.
I want to do this entirely in an xml layout file. When I put ImageButton xml tags inside a GridView xml body, The layout panel in eclipse is throwing an exception: UnsupportedOperationException:addView(View, LayoutParams) is not supported in AdapterView.
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May 6, 2010
I have an Activity which uses a layout with a LinearLayout in it. Now I want to create in runtime a subactivity which loads some other layout and add this layout as item of my LinearLatout.
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Sep 27, 2010
I have following in xml
I wanna put the second linear layout at the bottom of the screen.
I have set the property of second Relative layout to bottom but still not showing at bottom..
code:...................
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Sep 6, 2010
I have LinearLayout. Inside to that i have added one more Linearyout ( checkbox & text ).
(LinearLayout) one textView, (LinearLayout) Checkbox,textview , one textview
Now whenever clicks the checkbox, i need to dynamically display EditBox after the checkbox.
code:..........
On the click of checkbox listener i added a code like below.
code:.........
I want to the layout which was added earlier.
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Sep 3, 2009
I am using eclipse 3.5 with the ADT plugin.when I view layout xml files, i get two tabs in the view the source code view and a graphical view.the graphical view almost never works for any of my layouts.it usually shows "NullPointerException: null" at the top and nothing else. when it does work, it often does not match what i get in the simulator or device.it seems like this thing simply is not ready for prime time; although the idea is very cool.has anyone else had much success with it?
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