Android : ImageButtons In A ViewGroup / Remove Existing Buttons
Jan 14, 2010
My app's underlying view has bitmaps, lines, etc drawn on a canvas. I want to display images (icons) on top of this which will respond to Touch events. The number and positioning of such images will be variable depending on data in an SQLite database.
Am I correct in thinking that the way to achieve this is to have a ViewGroup to which I add first the basic view then for each icon an ImageButton object with an OnTouch listener and positioning defined by setting the margins in a RelativeLayout.LayoutParams object?
My code for each button reads as follows: This seems to work when the screen is initially drawn, and when the screen is subsequently redrawn (with new data) new buttons are added; however, the previous buttons are not removed.
I've tried calling Global.ThisApp.MyLayout.removeView with each in turn button as a parameter but Eclipse objects that a MyButton object cannot be a parameter for removeView.
How can I remove the existing buttons each time the underlying view is invalidated?
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Sep 5, 2012
My phone was just stolen and so I am temporarily using an older Gingerbread device I had laying around. The problem is that my wife used it for a period of time and so its "locked" to her Google account. I realize that with root its fairly easy to disassociate the device from the primary Google account, but I have been unable to find out how to do it WITHOUT root. I really don't want to fully wipe the device if possible! The phone in question is running 2.3.4.
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Feb 22, 2010
how to add add,remove,back buttons in ListActivity.
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Jun 29, 2009
I want to show MediaController for normal MediaPlayer class. I have done like this:
I have put the MediaController in layout (here in case : sdcard_media_view) and written the code like this.
Its just an audio player. Its working fine but Unable to remove the prev,next buttons of the MediaController.
CODE:....................
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Dec 12, 2009
In Android 1.6, upon tapping a spinner (drop-down menu), radio buttons appear next to the spinner options. How do I remove those radio buttons so that just the option text remains?
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Jul 30, 2010
I am trying to populate a ViewStub with a new view depending on which ImageButton is clicked, but as I just discovered ViewStubs I am not exactly sure how this would work...
e.g. can I provide the ViewStub with different inflatedIds and within the onClick event of a Button inflate the ViewStub by calling a specific inflatedId?
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Jun 9, 2010
When entering a work or home number into a person's contact, those same numbers appear as "send message" buttons.
How can I remove these message buttons for other than mobile numbers?
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Sep 28, 2010
I am trying to create a table of 7 rows and 7 columns of ImageButtons - buttons with image resource added from the drawable folder. The problem is I can only see the first button and the rest go off screen. How do I scale the image or the buttons so all 49 can be viewed on screen?
<?xml version="1.0" encoding="utf-8"?>
<TableLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<TableRow>
<ImageButton
android:id="@+id/r0c0"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/frog"
android:scaleType="centerInside"....................
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Nov 2, 2010
I have three image buttons which i want to aligne center vertically.
I have layout something like this:
CODE:..............
Although i have tried frame and relative but then image are overlapping each other.
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Feb 11, 2013
I'm trying to remove some softkeys from a ROM for the Galaxy Note. The Galaxy Note has a hw home button and capacitive back and menu buttons. The thing is, I like tablet ROMs because they use the screen better, but all of them come with Home, Menu and Recent Apps soft buttons added. On TW modded roms you can also find a multiwindow button to launch apps in multiwindow mod (looks like a "^"). So I just want to keep this button (maybe Recent apps too, I'll decide it later). I know how to decompile apks and edit xml's. What I want to know is which apks I need to edit and which xmls in said apps I need to edit/remove entries. I already tried to edit SystemUI.apk and tw_systembar.xml (deleted the entries for Home and Back), but UI crashed on startup and never come up again.
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Sep 13, 2010
GMail is almost unusable when composing a message - the Send and discard and Save buttons take up more room than you get space to type, resulting in just 3 or so lines of visible text. To make it worse, the typing font is massive.
Does anyone know how to...
1) Remove the stupid Send/Discard/Save buttons above the keyboard. Clicking the menu soft-key brings up those options anyway, meaning they literally are nothing but a waste of typing space
2) Change the font size, so we can see more text as we type. When reading a message, the font is much smaller and still very readable...
3) Change the keyboard to something shorter, gaining more room to see messages we composes
I got this phone to GMail with so this is pretty annoying.
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Oct 4, 2010
I have a button which I want to occupy 75% of the screen:
On a 480x800 resolution screen this would be 360 pixels wide.
On a 280x320 resolution screen this would be 210 pixels wide.
How do I go about specifying this in my layout XML file?
I understand there is a DIP unit of measurement, but does that also work to scale screen images for resolutions? What DIP measurement would I use for this, and do the images need to be saved at 160dpi.
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Mar 20, 2012
I have a background image in linear layout and am trying to fix buttons over it at specific points,but i could not position it at specific points
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Sep 2, 2009
How to use viewGroup in android
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Mar 15, 2010
Can you please tell me how can I setHeight for a ViewGroup? I see there is a layout(l,t,r,b);
But that is different form setHeight(), since I don't know where should be the top/bottom of the viewGroup. I need to set the height of the ViewGroup and return that to ListAdapter.
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Jul 29, 2009
I am not able to find out the perfect layout(viewgroup) to place four buttons as shown in the attached image. Basically, i want to place four buttons near the top/left/bottom/right edge of the screen. AbsoluteLayout helped, but it is deprecated (It is also better to avoid AbsoluteLayout as it is not very flexible for orientation changes)
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May 12, 2010
I am able to get a GLSurfaceView to have a transparent background with:
CODE:............
when I set the Activity's window background to transparent and the GLSurfaceView is the contentView of the Activity.
But, let's say my GLSurfaceview is parented by a ViewGroup and I want GLSurfaceView bg to be transparent to see the Viewgroup's background - I am not able to do so with the code above. Is this a limitation or am I missing something?
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Jul 22, 2009
How can one use a GLSurfaceView similar to a ViewGroup, in the sense of adding Views(CustomViews) over it? Is there any means to make the GLSurfaceView be the canvas on which the view draws its contents?
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Jul 30, 2010
I have a ListActivity whose layout looks like. code...
However, my empty list view consist only of the ImageView listed first inside the nested LinearLayout.
This seems like a reasonable thing to do but I don't completely understand Android's layout rules yet.
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May 5, 2009
I try to make the Content view of SlidingDrawer is a ViewGroup, for example , in the Launcher example it can have two GridView in the same SlidingDrawer my sample is to make android:content = "@id/layout" ,which is a LinearLayout but i found only the first child in the layout will be shown so i would like to ask is there any constrain to make SlidingDrawer can not have multiple views in its content?
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May 19, 2010
I am new to Android, and I am trying to understand how to create a custom ViewGroup. I created MyViewGroup as follows: Code...
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Apr 26, 2010
I am looking for Wrappable ViewGroup just like what TextView do. I need this for layout. This should be something like LinearLayout but wrappable to multiple lines. Or do I need something custom?
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Jul 14, 2010
I have a ViewGroup (LinearLayout) which contains a couple of TextViews and one ImageView. I want to make this entire group clickable. However, clicks on the TextViews or ImageViews or on the area enclosed by the ViewGroup above doesn't result in the handler being called. Any suggestions on how I can make a whole ViewGroup clickable?
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Nov 25, 2009
I am trying to add a view to a viewgroup but I am getting the following error when I run the application
Error: E/AndroidRuntime( 570): java.lang.IllegalStateException: The specified child already has a parent. You must call removeView() on the child's parent first. Code: public class ExampleApp extends ViewGroup{
private LayoutParams mLAyoutParams; AlbumArtImageView mAlbumArtThumnail;
static final String TAG = "ExampleApp";......................
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Apr 23, 2010
I have the following structure defined in an xml layout file.
<RelativeLayout android:id="@+id/mainLayout"
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content" android:layout_height="wrap_content">
<FrameLayout android:id="@+id/frame" android:layout_centerInParent="true" android:layout_width="wrap_content" android:layout_height="wrap_content" ></FrameLayout>
<Button android:id="@+id/button" android:layout_below="@id/frame" android:layout_width="wrap_content" android:layout_height="wrap_content" />
</RelativeLayout>
The FrameLayout is positioned correctly in the center of its parent. But the Button isn't getting positioned under it. Instead it's displaying in the top left corner. Am I doing something incorrectly or is this a bug with RelativeLayout?
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May 24, 2010
I am trying to create a ListView and add it to a custom ViewGroup.
Here is my code:
CODE:.................
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Aug 2, 2010
I've got the following node in my XML layout:
CODE:.................
TagLayout is a class that extends ViewGroup, and basically holds a bunch of buttons with text (a custom object that act as tags, but that's neither here or there).
The problem is that when there are too many buttons, the view no longer scrolls. I can confirm that I am adding tags but I can't see anything.
If I wrap the above within a ScrollView, the layout never renders. I tried adding the attributes android:isScrollContainer and android:scrollbars, but that doesn't change anything. Is there something I'm missing here?
I should also add that TagLayout is overriding the onMeasure() event. I guess I need to implement a scrolling mechanism there...?
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Nov 17, 2010
I have a custom ViewGroup that I wrote, and have been able to use it to lay out child elements in code just fine. However, now I'd like to be able to use it for layout in XML. I would also like to be able to add some custom attributes to the XML file to better control my layout. How do I set up, both in XML and in code, a set of custom attributes? Bonus if it can be used with the built in designer in Eclipse.
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Dec 2, 2009
I have small ViewGroup somewhere in the middle of the screen. this ViewGroup contains some Views that i'd like to animate.
now this ViewGroup in dispatchDraw() method manages any child Views animations, clipping them to ViewGroup's bounds.
my question is whether it is possible not to clip them to ViewGroup's bounds?
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Nov 16, 2009
I want to share the same view.mTag value of a viewgroup to all the childs under that viewgroup.
Like all childs should call the getTag() of viewgroup to get the tag .How can i do that ?
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