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android ProgressBar is changing height dimension of parent LinearLayout

I have a bunch of RelativeLayout inside LinearLayout. Inside this will be ProgressBar and other elements.
The problem at the moment is that the ProgressBar is extending the height dimension of the parent LinearLayout when placed inside the RelativeLayout.
Here's the basics of what I have.
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:layout_weight="1"
android:weightSum="2">
<RelativeLayout
android:id="#+id/timer1"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:background="#android:color/darker_gray">
<ProgressBar
android:layout_width="200dp"
android:layout_height="20dp"
style="#android:style/Widget.ProgressBar.Horizontal"
android:paddingLeft="16dp"
android:paddingRight="16dp"
android:layout_centerInParent="true"/>
</RelativeLayout>
<RelativeLayout
android:id="#+id/timer2"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:background="#android:color/holo_blue_light"/>
</LinearLayout>
The ProgressBar looks like it is extending height of the parent LinearLayout by the height of the ProgressBar. Which of course is not wanted.
Bare in mind that the above LinearLayout is inside another vertical LinearLayout where weightSum="3". So this distortion of the height means all will not fit in the screen vertically.
The one flaw I may have in my thinking is that because I have not yet completed the code (not put ProgressBar in each of the three levels) that it's just a quirk. I'll do that and report back. But it still seems to me this can't be a good thing.

<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:orientation="horizontal"
android:layout_weight="1">
<RelativeLayout
android:id="#+id/timer1"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:background="#android:color/darker_gray">
<ProgressBar
android:layout_width="200dp"
android:layout_height="20dp"
style="#android:style/Widget.ProgressBar.Horizontal"
android:paddingLeft="16dp"
android:paddingRight="16dp"
android:layout_centerInParent="true"/>
</RelativeLayout>
<RelativeLayout
android:id="#+id/timer2"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:background="#android:color/holo_blue_light"/>
</LinearLayout>
when using weights use the width or the height to 0dp which ever orientation u need

Well there you go. After I filled all three levels of the outer LinearLayout (not visible in example code above), the layout seemed to sort itself out.
All height parameters are the same (each taking up one third of the height of the screen) and this is true in both the xml Preview pane and when tested on an emulator.
So it looks to me that if you have a weightSum of 3, then the layout will not balance out until you have actually written the code for all three weight divisions.
For example, this would work:
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:wieghtSum="3" >
<TextView
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:text="#string/example_text" />
<TextView
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:text="#string/example_text" />
<TextView
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:text="#string/example_text" />
<LinearLayout/>
But the following would potentially show a distorted height of the text views because the code is incomplete. weightSum is set to 3 but only code for two of the three divisions is written.
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:wieghtSum="3" >
<TextView
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:text="#string/example_text" />
<TextView
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:text="#string/example_text" />
<LinearLayout/>

Android LinearLayout: putting some object with equal space

I need to put some ImageButton with equal space in layout(something like the picture I attached).
I checked a lot of similar posts like:
Android: How to make all elements inside LinearLayout same size?
give equal space between ImageViews
What is android:weightSum in android, and how does it work?
However they didn't help me.
Using margin and padding didn't solve my problem, because I want to have equal space around ImageButton. It is important for me to keep the space equal in any device. Also I want to set size to my ImageButton. It's a rounded image so the height and width of image should be equal . When I use weightsum, I can't set arbitrary width as layout_width for ImageButton.
Thanks for helping me.
P.S. This is not duplicate post. In the first link which i brought, it is not possible to set equal space. It just put objects next to each other.
This is a layout with 2 ImageButton with arbitrary size:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
tools:context="info.androidhive.materialdesign.activity.HomeFragment"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:background="#drawable/background_home">
<ImageButton
android:layout_width="#dimen/log_guid_image_height"
android:layout_height="#dimen/log_guid_image_height"
android:onClick="onLastClick"
android:id="#+id/btn_menu_last"
android:background="#drawable/menu_last" />
<ImageButton
android:layout_width="#dimen/log_guid_image_height"
android:layout_height="#dimen/log_guid_image_height"
android:onClick="onAddClick"
android:id="#+id/btn_menu_add_records"
android:background="#drawable/menu_add_records" />
</LinearLayout>
I added android:layout_weight="1" to each ImageButton, and set android:layout_width="0px" and it gave me this:
The problem is that how I can add equal space around ImageButton and gave arbitrary size to them!!!

You can use TableLayoutas below:
<TableLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="left|top"
android:stretchColumns="*">
<TableRow
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1">
<ImageButton
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:id="#+id/imageButton" />
<ImageButton
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/imageButton2" />
</TableRow>
<TableRow
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1">
<ImageButton
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/imageButton3" />
<ImageButton
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/imageButton4" />
</TableRow>
<TableRow
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1">
<ImageButton
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/imageButton5" />
<ImageButton
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/imageButton6" />
</TableRow>
</TableLayout>
You can you use a inner LinearLayout at the place of ImageButton to customize your ImageButton position.

Try this:-
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#drawable/background_home"
android:weightSum="1" >
<ImageView
android:id="#+id/btn_menu_last"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="0.5"
android:onClick="onLastClick"
android:src="#drawable/menu_last" />
<ImageView
android:id="#+id/btn_menu_add_records"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="0.5"
android:onClick="onAddClick"
android:src="#drawable/menu_add_records" />
</LinearLayout>

Just nest LinearLayouts like this:
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<LinearLayout
android:layout_width="0dp"
android:layout_weight="1"
android:gravity="center"
android:layout_height="wrap_content"
android:orientation="horizontal">
<ImageButton
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</LinearLayout>
<LinearLayout
android:layout_width="0dp"
android:layout_weight="1"
android:gravity="center"
android:layout_height="wrap_content"
android:orientation="horizontal">
<ImageButton
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</LinearLayout>
</LinearLayout>
Put ImageButtons inside each LinearLayouts.
Using LinearLayout and getting equal space is essentially the same idea as the past Q&A you read.
And inside these equal spaced cells, you can put ImageButtons with layout_gravity="center" (or gravity="center" with LinearLayout as shown abobe).

I think for this problem you need use a GridView and specify columnWidth option.

Evenly fit ListViews and a Button into a LinearLayout

I want to fit two Listviews (+two Textviews) and a Button evenly into a LinearLayout. The final result should look something like this:
The Listviews can contain any number of items (from empty to requiring to scroll), however the button must be always visible. A lot of answers here suggest to use layout_weight along with layout_height="0dp" and layout_width="fill_parent", however this results in the Listviews taking up all available space and pushing the button out of the screen. I assume the parameters for the button are wrong, but I can't figure out which of them. At least the TextViews are working, since they are positioned correctly in every case.
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:layout_gravity="center">
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:textSize="12sp"
android:gravity="left"/>
<ListView
android:layout_height="0dp"
android:layout_weight="1"
android:layout_width="fill_parent"/>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:textSize="12sp"
android:layout_marginTop="12dp"
android:gravity="left"/>
<ListView
android:layout_height="0dp"
android:layout_weight="1"
android:layout_width="fill_parent"/>
<Button
android:layout_height="0dp"
android:layout_weight="1"
android:layout_width="fill_parent"/>
</LinearLayout>
I want to avoid to further nest the layout with additional LinearLayouts, unless there is no other way.

Something like this (not tested):
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="12sp"/>
<ListView
android:layout_height="0dp"
android:layout_weight="1"
android:layout_width="fill_parent"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="12sp"
android:layout_marginTop="12dp"/>
<ListView
android:layout_height="0dp"
android:layout_weight="1"
android:layout_width="fill_parent"/>
<Button
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_width="wrap_content"/>
</LinearLayout>
Your button needs to have wrap_content height and (I think the reason of your bug) LinearLayout should have fill_parent as the height.

Making two LinearLayouts have 50% of the screen each without using layout_weight

I'm currently doing a special xml layout of a landscape screen, where 4 images are present and 2 LinearLayouts are next to each other with 2 images each. These LinearLayouts I call linearLayout1 and linearLayout2.
linearLayout1 is marked with blue rectangle:
linearLayout2 is marked with blue rectangle:
As you can see, the first one uses ~80% of the screen, while the second one uses what's left. I don't want this of course, I want 50% for each. I can't use layout_weight because it's already used in the LinearLayouts themselves (positioning of the two images) and nested weights are bad for performance.
I've tried many different variations, but I simply can't get the two LinearLayouts to have 50% of the screen each. Here's the code:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/db1_root"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="horizontal" >
<LinearLayout
android:id="#+id/title_container"
style="#style/TitleBar" >
<ImageView
style="#style/TitleBarLogo"
android:contentDescription="#string/imgViewDesc"
android:src="#drawable/title_logo" />
<ImageView
style="#style/TitleBarSeparator"
android:contentDescription="#string/imgViewDesc" />
<TextView style="#style/TitleBarText" />
<ImageButton
style="#style/TitleBarAction"
android:contentDescription="#string/imgViewDesc"
android:onClick="onClickAbout"
android:src="#drawable/title_about" />
</LinearLayout>
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_below="#id/title_container"
android:layout_above="#+id/mobFoxView" >
<!-- LEFT COLUMN -->
<LinearLayout
android:id="#+id/linearLayout1"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_above="#+id/mobFoxView"
android:layout_alignParentLeft="true"
android:layout_toLeftOf="#+id/linearLayout2"
android:background="#color/white"
android:gravity="center"
android:orientation="vertical"
android:weightSum="2" >
<ImageView
android:id="#+id/imgNews"
android:layout_width="wrap_content"
android:layout_height="0dp"
android:layout_weight="1"
android:contentDescription="#string/imgViewDesc"
android:onClick="onClickFeature"
android:src="#drawable/front_news_1" />
<ImageView
android:id="#+id/imgReleases"
android:layout_width="wrap_content"
android:layout_height="0dp"
android:layout_weight="1"
android:contentDescription="#string/imgViewDesc"
android:onClick="onClickFeature"
android:src="#drawable/front_releases_1" />
</LinearLayout>
<!-- RIGHT COLUMN -->
<LinearLayout
android:id="#+id/linearLayout2"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:layout_above="#+id/mobFoxView"
android:layout_alignParentRight="true"
android:layout_alignTop="#id/linearLayout1"
android:background="#color/white"
android:gravity="center"
android:orientation="vertical"
android:weightSum="2" >
<ImageView
android:id="#+id/imgArtists"
android:layout_width="wrap_content"
android:layout_height="0dp"
android:layout_weight="1"
android:contentDescription="#string/imgViewDesc"
android:onClick="onClickFeature"
android:src="#drawable/front_artists_1" />
<ImageView
android:id="#+id/imgLabels"
android:layout_width="wrap_content"
android:layout_height="0dp"
android:layout_weight="1"
android:contentDescription="#string/imgViewDesc"
android:onClick="onClickFeature"
android:src="#drawable/front_labels_1" />
</LinearLayout>
</RelativeLayout>
<com.mobfox.sdk.MobFoxView
android:id="#+id/mobFoxView"
android:layout_width="fill_parent"
android:layout_height="50dp"
android:layout_alignParentBottom="true"
mode="test"
publisherId="#string/mobFoxID" />
</RelativeLayout>

Well, there are two options I see available here.
Screw that LINT warning and use the nested weights anyway. Phones are fast and it will make milliseconds worth of a difference since you only inflate layouts once (most of the time). Having nested layouts is only bad for performance because the inflator needs to make more passes to measure the layouts.
Swap your top LinearLayout with a RelativeLayout and align the two children to an invisible View in the center like so:
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/top"
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:id="#+id/center_point"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_centerInParent="true"/>
<LinearLayout
android:id="#+id/left_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_alignParentLeft="true"
android:layout_alignRight="#+id/center_point">
</LinearLayout>
<LinearLayout
android:id="#+id/right_layout"
android:orientation="horizontal" //default
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_alignParentRight="true"
android:layout_alignLeft="#+id/center_point">
</LinearLayout>
</RelativeLayout>

You can set "Weight" for the layouts , like this :
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<LinearLayout android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="1">
</LinearLayout>
<LinearLayout android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="1">
</LinearLayout>
So each linearlyouts take 50% of the screen. :)

If you're trying to avoid using a feature for its intended purpose you probably should consider if your approach is non-ideal... It seems like you're trying to arrange items into rows and columns. Try using a TableLayout.

Without layout_weight, put both of those linearlayouts into a parent linearlayout
<LinearLayout orientation:horizontal>
<LinearLayout Child 1 />
<LinearLayout Child 2 />
</LinearLayout>
center them using layout_gravity , if the content of those linearlayouts are the same size, they should be the same size
if not, then you could still have a problem
and may need to resize using code

Android: tablerow disappears?

I have a <TableLayout> with two <TableRow>s. The first row contains two buttons (this works fine), and the second row contains a <FrameLayout> that contains an <ImageView>. My problem is, the second TableRow (and FrameLayout) do not appear until I load an image into the ImageView. I want the FrameLayout to be visible (with its background color) at all times.
I have used android:layout_width="match_parent" and android:layout_height="match_parent" in the <ImageView> and <FrameLayout>, but it does not seem to help.
Here is the layout xml:
<TableLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingTop="5dp"
android:stretchColumns="1">
<TableRow>
<Button
android:id="#+id/buttonLoadPhoto"
android:text="Load..."
android:textSize="20sp"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1" />
<Button
android:id="#+id/buttonPrintPhoto"
android:text="Print..."
android:textSize="20sp"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1" />
</TableRow>
<TableRow
android:background="#FF4422">
<FrameLayout
android:id="#+id/frameLayoutPhoto"
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#303030">
<ImageView
android:id="#+id/imageViewPhoto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scaleType="matrix">
</ImageView>
</FrameLayout>
</TableRow>
</TableLayout>
Note 1: I have included a background color for the offending <TableRow> just so I could narrow down the problem to the TableRow and not the ImageView (the TableRow's background color does not show up).
Note 2: This is the layout for an Activity that is loaded into a <TabHost>'s <FrameLayout>, in case that matters.
Note 3: I am targeting Android 2.2, and I am using a Xoom to test.
Essentially, I want the <FrameLayout> to take up the remaining space in the tab. Is there an alternative way to do this?
Thanks!

The documentation states that layout_height should be WRAP_CONTENT and width should be MATCH_PARENT, and that you do not need to specify these since it will enforce it anyway. I'm not sure if you added those in as you were trying to debug it or not.
Edit (This line is incorrect, but remains here as it is mentioned in the comments):You can also try setting a height for the TableRow, since none is provided and the content inside of it does not have a height until an image is there.

I found an alternative solution using <LinearLayout>s instead:
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:paddingTop="5dp">
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<Button
android:id="#+id/buttonLoadPhoto"
android:text="Load..."
android:textSize="20sp"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1" />
<Button
android:id="#+id/buttonPrintPhoto"
android:text="Print..."
android:textSize="20sp"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1" />
</LinearLayout>
<FrameLayout
android:id="#+id/frameLayoutPhoto"
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#303030">
<ImageView
android:id="#+id/imageViewPhoto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scaleType="matrix">
</ImageView>
</FrameLayout>
</LinearLayout>