Android :: Weight Sum - Layout Attributes Not Working
Nov 26, 2009
I have a simple horizontal linear_layout with bunch of image views in it. the trick is that the views have different widths, relative to the size of their parent (the linear layout). I set the layout's weightSum to a 100 and the layout_weight to let's say 10 of one view and 15 of the other, on so on. And it did not work. I also tired using float values setting the weightSum to 1.0 and the layout_weight of the image views to 0.2 and 0.3 and so on. But it didn't work either. I did search this group for any references to the weightSum but found nothing. Any ideas how to handle it?
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Oct 4, 2009
LinearLayout obeys weight and as per documentation weight gives priority to an object. Here is the layout I have: Here you can see that the first textview has a weight of 2, second has a weight of 0, but still the second text view takes up all the space. If I give the first edit view a weight of 0 and second a weight of 2, surprisingly, first edit view gets more space. Isn't this weird, or am I doing something very wrong. I am poor in layouts. <LinearLayout android:id="@+id/LinearLayout01" android:layout_width="fill_parent" android:layout_height="fill_parent"
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Feb 1, 2009
i know we can use XML to specify layout_weight.(refer to APIdemo LinearLayout9.java) but is there any method to specify it from code?
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Apr 8, 2009
I have played around a bit with the xml files for creating layouts and can't explain the behaviour of layout_weight when using it in a LinearLayout that has orientation="vertical"
When creating a layout that is horizontal everything follows the documentation, that a child would get more space if it's has the highest value.
But the following code for vertical orientation, give more space to the item with lowest weight.
CODE:..........
And the question is: Is this a bug or just a feature that maybe need more documentation?
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Aug 6, 2010
I have defined custom views in the various layout .xml files. However, all the layouts are using the Linear Layout - put the content would vary.
I would like to create my own widget tag something like <com.mypackage.MyLinearLayout />, I would like to pass the layout as a param to the <com.mypackage.MyLinearLayout layout="@layout/simple.xml" />
How to define new attributes to the custom widgets ? Simply defining a getter/setter method would work or is there any other references.
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Sep 14, 2010
Is there a way to specify a background in a layout based on OS version?:
android:background_1.5="@color/white"android:background_above_1.5="@drawable/mybackground"
I'm running into a problem where using a 9 png drawable for the background causes a stack overflow exception on a listview item (stack trace shows its related to a child TextView -> drawText()). The layout is simple:
<LinearLayout><ImageView /><TextView /></LinearLayout>
and the background works fine on 1.6 and above. It's just 1.5 that's having the issue. If I set the background to be a color, it works fine.
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Mar 28, 2010
Looking in the android sdk folders, I've found a file called values/config.xml. This seems to be somewhere that you can define values for later use in layouts and animations.
Given the config.xml:
<resources>
<string name="config_somePadding">50dip</string>
</resources>
How would I reference this to use as the layout_height in a layout xml file?
@string/config_somePadding is actually the only one I've found that doesn't throw an error in Eclipse (even though there isn't a config_somePadding in values/strings.xml), but it appears to just put an empty string.
In the sdk, they use an integer for animation duration. They reference it like this: android:duration="@android:integer/config_longAnimTime". Is there a way to use values that aren't integers in the layout_height attribute?
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Jun 16, 2009
If a RelativeLayout must be generated at run time, what are the equivalent API calls for the attributes set in the XML Layout editor? Take for example this very simple RelativeLayout that places the second ImageView to the right of the first ImageView:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/ android"
android:layout_width="fill_parent" android:layout_height="fill_parent"
android:orientation="horizontal" android:background="@drawable/ bg_sunrise"
android:layout_gravity="center" android:gravity="center">
<ImageView android:id="@+id/ImageView01" android:layout_width="wrap_content" android:layout_height="wrap_content" android:src="@drawable/icon"></ ImageView>
<ImageView android:id="@+id/ImageView02" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_toRightOf="@id/ ImageView01" android:src="@drawable/icon"></ImageView> </RelativeLayout>
Of the many, variations I tried, I had the most hope for this one, but it didn't work either:
protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState);
this.requestWindowFeature(Window.FEATURE_NO_TITLE);
RelativeLayout layout = new RelativeLayout(this);
layout.setLayoutParams( new ViewGroup.LayoutParams (
LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT ) );
ImageView imageView1 = new ImageView(this);
imageView1.setImageResource(R.drawable.icon);
imageView1.setAdjustViewBounds(true);
// set the ImageView bounds to match the Drawable's dimensions
RelativeLayout.LayoutParams params1 = new RelativeLayout.LayoutParams (LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
params1.addRule(RelativeLayout.ALIGN_PARENT_TOP); layout.addView(imageView1, params1);
ImageView imageView2 = new ImageView(this); imageView2.setImageResource(R.drawable.icon);
imageView2.setAdjustViewBounds(true); // set the ImageView bounds to match the Drawable's dimensions
RelativeLayout.LayoutParams params2 = new RelativeLayout.LayoutParams
(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
params2.addRule(RelativeLayout.RIGHT_OF, imageView1.getId());
layout.addView(imageView2, params2); this.setContentView(layout); }
Can anyone offer the Java equivalent to the above XML? Can anyone explain why there is no attribute, getter/setter, or method for accessing the properties that can be set in XML? What is the most elegant solution for dynamically creating Layouts, Views, and other Resources on the Android platform when there is no Java programmatic equivalent?
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May 26, 2010
I am trying to assign relative widths to columns in a ListView that is in a TabHost, using layout_weight as suggested here:Unfortunately, it seems to want to fit all the columns into the space that the button occupies, as opposed to the width of the screen. Or maybe there is another constraint that I do not understand.
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Jul 23, 2010
According to documentaion, FILL_PARENT basically lets the view take up the entire extra space. Weight also dictates how much of the extra space can be taken by the view. What is the difference? For eg: What happens when I use, new LinearLayout.Layout Params(Layout Params.WRAP_CONTENT,LayoutParams.WRAP_CONTENT, 1.0f)
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Apr 23, 2010
I always read about this funny weight value in the Android documentations. Now I want to try it for the first time but it isn't working at all. As I understand it from the documentations this layout: should create two buttons that are horizontally aligned and share the space equally. The problem is the two buttons don't grow to fill the space. The result is something like this: I would like the buttons to grow and fill the whole line. If both buttons are set to fill parent only the first button is shown and fills the whole line.
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Sep 29, 2010
I am using the Tab Layout almost copied from the example provided. But it's not working: public class TabHolder extends TabActivity {/** Called when the activity is first created. */ @Override
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Sep 7, 2009
is there a way to set the weight of a view using API calls? I construct parts of my UI at runtime. The dynamic UI has multiple View. However, I want to set the weight of those view to be non-equal. Any idea on how to do that?
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May 19, 2010
My wife and I have droids, however new to droid and she was using calorie counter to do her grocery shopping as it had a scanner function that would tell her how many points the item is while shopping. Calorie counter removed that function and my wife is looking for a replacement. I apologize if i duplicated a prior post.
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Jan 19, 2010
after figuring out the earlier question 'Layout Question', now my OnItemClickListener, and ItemLongClick Listener(ContextMenu) have stopped working. With just the TextView it works fine Anyone have any ideas as to why this would stop working?
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Jan 4, 2010
i am starting to develop Android applications and i would like to know if there are any tips for creating lightweight applications. This is my first attempt to write applications on a mobile platform but i hope that my experience in programming will help.I have in mind the "Better, Faster, Lighter Java" book, but will this be "the" answer to my question? Are there any tips specific for the Android Platform that will allow me to build lightweight applications?
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Jul 26, 2010
I'm looking for an embeddable webserver for an android project I am working on. ijetty is to big for me, I'm just trying to serve some static content don't need an entire servlet container. Something like http://java.sun.com /javase /6/docs/jre/api/net/httpserver/spec/com/sun would be useful, but probably still overkill for what I need.
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Jul 5, 2010
For those people who have held the device, how is the weight distribution? Just from the looks of it, it looks like it would be a tad top heavy because of the hump.
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Dec 7, 2009
In my application, I don't want the activity to restart when user changes his mobile's orientation or when he opens his physical keyboard.So, I have to assign the following XML attribute to all my activities in the manifest file.Is it possible to assign the same XML attribute value to all activities ? Or should I copy the attribute in all the <activity> tags of the manifest?
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Nov 5, 2009
I met a problem in setting xml attribute at run time.
For example I define a xml layout like this:
CODE:.......................
I want to set android:drawableLeft="@drawable/icon" at runtime.But thers has no setter method for this attribute.
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Sep 26, 2010
I use custom xml attributes for preferences. The preferences are inflated from xml.I managed to create and read custom xml attributes for EditTextPreference, ListPreference and CheckBoxPreference by creating custom classes which inherit from the respective preference class.My problem is that I can't do this for the PreferenceScreen class, as it is a final class. So my question is: Is there any way I can read the custom attributes of a PreferenceScreen?
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Feb 5, 2010
can i affect the look of the dropshadow that the scroll view shows when there's "more" available via scrolling? i'm not seeing anything in the scrollview docs.
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Aug 29, 2009
Can u tel me what are the attributes we want to specify in the <scrollview> xml file.... bcoz i want to display scrollbar n my layout...i tried scrollview but it shows an error like force to close....
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Nov 26, 2009
Is it possible to define an attribute value of a height attribute, for example, relative to its parent's height. For instance, I want the linear_layout's height to be 2/3 of its FrameLayout parent. I have a FrameLayout with two linear_layouts. The first linear_layout fills the entire FrameLayout and the second linear_layout overlaps the first but only 2 / 3 of its height.
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Jan 22, 2010
I have downloaded a media file. (say mp3 file). I need to get the attributes of the file, like ARTIST, TITLE etc.
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Sep 12, 2010
I am desperately trying to set TextView attributes of cells within a table programmatically but can't get this to work! Whenever I set layout properties, the field will simply not appear (but not give any error or exception). I boilded this down to this simple example:
CODE:.......
This will show three fields, but when you uncomment the five commented line, then NOTHING will appear. Why is that so? Why does setting layout parameters cause my TextView's to not appear? I'm stuck! What am I missing?
Here's the manifest, if some kind soul quickly wants to try this out:
CODE:.....................
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Apr 14, 2014
i have downloaded custom rom but there are some bugs such as
1)Dialpad layout on dialing screen is not working
2)the symbol for internet H+ or E is showing but the problem is that it doesn't show that data is enable and able to transfer data.
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Aug 30, 2010
My 7 year old, 5year old & 3 & 1/2 year old are able to do terrible things to my phone & computers! I hope I am one of many frustrated & forlorn parents who have great kids that are obviously a rung or 3 up the evolutionary ladder! Perhaps we should start a support group! LMAO I am new to android & so far I love it, so much that you can do on this platform & as i am a lateral thinker it is so much fun being able to get apps that seem to allow my though processes & not miss a beat, what a delight. NOt too impressed with the pattern lock at the moment though but I am hopeful of finding a solution there or admiring my Very expensive paper weight that might have been so much fun!! I am currently very tentative about all the programming stuff but I guess in time & with help from all the learned folk out there I will be able to have the best & most productive tool completely customized for me that I could imagine. Do let me know if I am deluded as it would save me much heart ache, Hope to be educated well here so thanks in advance for your patience & assistance!
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Feb 10, 2009
I want to create an application that can change one's voice during a call in real time is there a way to do that in android? can you point me to the right package?
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Aug 27, 2009
I was wondering if anyone could give me hints on this one (i am re-posting an older version of a question i once had): i created a new attrs.xml that adds some functionality to the soft keyboard sample code.. code...
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