Develop Reference

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/>

Fix Android layout (dp, margin etc.)

although i read myself through several threads explaining the differences between dp,sp,px etc. and also tried to get a good layout,
I am still struggeling to get it done right for different phones.
I am using different fragments, but if I get help to make it all right in one fragment, I'm sure i will be able to fix the others on my own.
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
<!--all paddings=0-->
android:keepScreenOn="true"
tools:context=".MainActivity">
...
<fragment
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/fragmentBase"
class="...FragmentBase" />
<!--other fragments-->
</RelativeLayout>
So im trying to get a proper layout in that fragmentBase, which looks like this:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
<!--all paddings=0-->>
<fragment
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/fragmentBase"
class="...FragmentBase" />
<ScrollView
android:layout_width="match_parent"
android:layout_height="400dp"
android:layout_marginTop="40dp"
android:requiresFadingEdge="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<!--elements-->
</LinearLayout>
</ScrollView>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="bottom">
<Button
android:layout_width="0dp"
android:layout_weight="0.8"
android:layout_height="40dp"
<!--other stuff-->/>
<Button
android:layout_width="0dp"
android:layout_weight="0.5"
android:layout_height="40dp"
<!--other stuff--> />
<Button
android:layout_width="0dp"
android:layout_weight="0.7"
android:layout_height="40dp"
<!--other stuff-->/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="bottom"
android:layout_marginBottom="40dp">
<Button
android:layout_width="0dp"
android:layout_weight="0.6"
android:layout_height="40dp"
<!--other stuff--> />
<Button
android:layout_width="0dp"
android:layout_weight="0.5"
android:layout_height="40dp"
<!--other stuff--> />
<Button
android:layout_width="0dp"
android:layout_weight="0.6"
android:layout_height="40dp"
<!--other stuff--> />
</LinearLayout>
</RelativeLayout>
Sooooo. The problem is basically, that the scrollview in some cases is too long, in other cases too short. Having a fixed layout_height="400dp" seems to be a mistake.
Also setting the height of the two button-rows to 40dp and have one 40dp above the other, both starting from the bottom doesn't seem to be such a good decision, but those buttons got background-images, so I can't use wrap_content.
How would the layout be correct? I want the scrollView to start right under my "header", so android:layout_marginTop="40dp" is more or less fixed, while the two buttonrows should be at the very bottom of the screen.
I guess I want the scrollview to be dynamic length.
Plz help :S

I'll try to help you out without rewriting all of the code above.
First I'll start by suggesting a few changes:
You could set the height of the two LinearLayouts that contain the buttons to 40dp and set the buttons's heights to "match_parent"
You could give both LinearLayouts that contain the buttons an id, let's say
android:id="#+id/row1"
and
android:id="#+id/row2"
Then set the bottom one (id=row2) to have
android:layout_alignParentBottom="true"
And the top one (id=row1) to have
android:layout_above="#id/row2"
Once that is done you can set in the ScrollView the following parameters
android:layout_alignParentTop="true"
android:layout_above="#id/row1"
If I understood the problem, this should help. Hope what I wrote was usefull

try to add this code to your scrollview
android:layout_toStartOf="#+id/linearlayout1"
and this
android:id="#+id/linearlayout1"
to your 40 margin layout
this may help

One of two Android ListView filling too much space

I would like to obtain this layout for an Android app for mobile phones:
Icon - Object1
List with entries related to Object1
Icon - Object2
List with entries related to Object2
So far I have used the following layout tree (edited graphically with the editor in Android Studio):
Root-LinearLayout
Vertical LinearLayout
Horizontal LinearLayout with icon and text
ListView
Vertical LinearLayout
Horizontal LinearLayout with icon and text
ListView
May be this is not the best way to organize such layout (may be I should use lists with header, but suggestions very welcome), however it can be a good case for understanding deeper how ListView works.
This is the graphical layout generated:
the blue row corresponds to the first LinearLayout. As you can see from the second screenshot that follows, the second list goes all the way down to Hell, bringing me with her. Is there any way to make the lists respect the wrap_content+ weight behaviour?
The XML code follows. I have tried several combos (both reasonable and unreasonable) of layout:weights but none works. I also tried to set the min-width of the first LinearLayout (the hidden one), but nothing changes.
Could you please help me?
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent"
android:weightSum="2">
<LinearLayout
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_weight="1">
<LinearLayout
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:gravity="center_vertical"
android:minHeight="50dp">
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/imageView15"
android:src="#drawable/abc_ic_menu_share_mtrl_alpha" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Object1"
android:id="#+id/textView24"
android:textSize="26dp"
android:paddingLeft="10dp" />
</LinearLayout>
</LinearLayout>
<ListView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/listView2"
android:layout_weight="1" />
<LinearLayout
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_weight="1">
<LinearLayout
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:gravity="center_vertical">
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/imageView16"
android:src="#drawable/abc_ic_commit_search_api_mtrl_alpha" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Object2"
android:id="#+id/textView25"
android:textSize="26dp"
android:paddingLeft="10dp" />
</LinearLayout>
<ListView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/listView"
android:layout_weight="1" />
</LinearLayout>

It should work if you put your ListViews inside of the child LinearLayouts which hold the LinearLayout that has the TextView and ImageView. You also should be using "0dp" for the height when using weight with a vertical layout.
Something like this, I believe, should work
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent"
android:weightSum="2">
<LinearLayout
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_weight="1">
<LinearLayout
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="0dp"
android:gravity="center_vertical"
android:minHeight="50dp"
android:layout_weight=".2">
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/imageView15"
android:src="#drawable/abc_ic_menu_share_mtrl_alpha" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Object1"
android:id="#+id/textView24"
android:textSize="26dp"
android:paddingLeft="10dp" />
</LinearLayout>
<ListView
android:layout_width="wrap_content"
android:layout_height="0dp"
android:id="#+id/listView2"
android:layout_weight=".8" />
</LinearLayout>
Note the other changes: I gave the inner-LinearLayout an arbitrary weight of ".2" then the ListView a weight of ".8". And, of course, set the height to "0dp". You may need to play with those weights a bit but I think doing something like that for both first child LinearLayouts should get you close.
That may get your current layout to work but using headers and/or an ExpandableListView may be a better option.

RelativeLayout doesn't obey parent size (with layout_weight)

I haven't been able to find a similar problem to the one I'm having on StackOverflow - basically, I have a simple XML layout with a vertical LinerLayout which uses layout_weight to make a 10/50/40 split, which is what I want (as seen below):
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="left"
android:orientation="vertical">
<TextView
android:layout_width="wrap_content"
android:layout_height="0dp"
android:layout_weight=".1"
android:text="#string/title"
android:textColor="#color/black"
android:textStyle="bold" />
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_weight=".5"
android:orientation="vertical"
android:background="#color/green">
<HorizontalScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="top"
android:fillViewport="true">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal" />
</HorizontalScrollView>
<ImageView
android:id="#+id/preview_bg"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#drawable/level_preview_back"
android:focusable="false" />
</LinearLayout>
<TextView
android:layout_width="wrap_content"
android:layout_height="0dp"
android:layout_weight=".4"
android:text="#string/title"
android:textColor="#color/black"
android:textStyle="bold" />
</LinearLayout>
BUT - I want the HorizontalScrollView and the ImageView to be overlayed (i.e. take up the exact same space on on top of the other), so I insert a RelativeLayout as such:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="left"
android:orientation="vertical">
<TextView
android:layout_width="wrap_content"
android:layout_height="0dp"
android:layout_weight=".1"
android:text="#string/title"
android:textColor="#color/black"
android:textStyle="bold" />
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_weight=".5"
android:orientation="vertical"
android:background="#color/green">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<HorizontalScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="top"
android:fillViewport="true">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal" />
</HorizontalScrollView>
<ImageView
android:id="#+id/preview_bg"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#drawable/level_preview_back"
android:focusable="false" />
</RelativeLayout>
</LinearLayout>
<TextView
android:layout_width="wrap_content"
android:layout_height="0dp"
android:layout_weight=".4"
android:text="#string/title"
android:textColor="#color/black"
android:textStyle="bold" />
</LinearLayout>
But when I do this, the layout_weight (10/50/40 split) breaks and suddently the LinearLayout that now contains the RelativeLayout takes up virtually all the screen in the previews.
Anyone experienced this problem or know a good workaround? I've also tried replacing the LinearLayout with the RelativeLayout directly and I have the same problem.
EDIT: Looking further into this issue, there seems to be more to it. As I commented below, I was able to get around the problem by wrapping LinearLayouts around the TextViews, though I'm not sure why that worked. Updating my SDK and plugin didn't help (though I did need to do it....)
Moving further along with my task, I hit a second problem - I was implementing a second version of the overlapped ScrollView & ImageView (which were done with a FrameLayout as suggested by Karsten) but the layout_weight problems began anew.
Testing various arrangements, it seems that the issue is very much related to the image I'm using, which is quite large in resolution. Replacing them with a smaller image corrects the issues - it looks like using large images in either ImageViews or as backgrounds to LinearLayouts tends to ruin the layouts for the entire screen.
EDIT #2: I've actually loaded the XML on to two different devices and it renders exactly as it should.... This seems to be a bug with the Eclipse XML layout viewer?
(Please excuse the poor XML formatting - the Eclipse Android xml editor is frustrating in that regard...)

The XML you've posted works fine for me in the Eclipse preview. Are you running the latest version of the Android plugin?
Note that you can replace the middle LinearLayout and RelativeLayout with a single FrameLayout:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="left"
android:orientation="vertical" >
<TextView
android:layout_width="wrap_content"
android:layout_height="0dp"
android:layout_weight=".1"
android:text="string/title"
android:textStyle="bold" />
<FrameLayout
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_weight=".5"
android:background="#00ff00" >
<HorizontalScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="top"
android:fillViewport="true" >
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal" />
</HorizontalScrollView>
<ImageView
android:id="#+id/preview_bg"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#ff0000"
android:focusable="false" />
</FrameLayout>
<TextView
android:layout_width="wrap_content"
android:layout_height="0dp"
android:layout_weight=".4"
android:text="string/title2"
android:textStyle="bold" />
</LinearLayout>

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