I have several nested layouts that I'm trying to rotate 90 degrees on demand in code. I've got the setRotation part of things working just fine, but unfortunately things aren't resizing quite right with the rotation. The width on these elements is set to match_parent, and after the rotation it's still matching the parent width, not the parent height that it should be matching.
XML
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/mainLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context="link.basiclifecounter.LifeCounter"
android:background="#CC00CC">
<LinearLayout
android:id="#+id/topPlayers"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="2"
android:orientation="vertical"
android:background="#CC0000">
<RelativeLayout
android:id="#+id/p3"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1">
**A bunch of stuff in here**
</RelativeLayout>
<RelativeLayout
android:id="#+id/p2"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1">
**A bunch of stuff in here**
</RelativeLayout>
</LinearLayout>
<LinearLayout
android:id="#+id/bottomPlayer"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:orientation="vertical"
android:background="#00CC00">
<RelativeLayout
android:id="#+id/p1"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1">
**A bunch of stuff in here**
</RelativeLayout>
</LinearLayout>
</LinearLayout>
Rotation Java Code
view.findViewById(R.id.topPlayers).setRotation(90); //Rotate the entire top box
view.findViewById(R.id.p3).setRotation(180); //Flip one side so both players face outwards
This picture shows the image before the rotation occurs.
This picture shows the image after the rotation occurs.
As you can see, the entire box has been rotated after it's height and width are already set. In the unrotated version the width (match_parent) should be full screen and the height (layout_weight=2) should be 2/3rds of the screen. That works just fine. The problem is after it rotates, those sizes stay the same instead of adapting and changing to the new rotation.
I threw in some bright background colors to help troubleshoot, that Pink that you're seeing is in the main LinearLayout, not in any of the layouts that are rotated.
I did try including the rotation in the xml itself, instead of within the code, and got the exact same results as the after picture, so it's clearly something I don't understand about how to get the layout widths the way I want. Can I just not use layout_weight effectively with rotation?
I think that you are having the same issue as outlined in this Stack Overflow question. It appears that the rotation is simply not taken into account for layout purposes. In other words, layout occurs then the rotation happens with the views as laid out prior to rotation.
This answer to that same question may help you.
You could also manually adjust the measurements. Either way is a little messy, but I think that is the way it is.
You could load an alternate layout that will behave as you wish instead of doing the rotation. (See layout and image below.) You can also be achieve the same result by changing the layout parameters programmatically.
Here is a project on GitHub that demonstrates doing the rotation programmatically. The view rotates after a three second pause.
I hope that you find this useful.
alternate.xml
<LinearLayout
android:id="#+id/topPlayers"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="2"
android:background="#CC0000"
android:orientation="horizontal">
<RelativeLayout
android:id="#+id/p3"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:gravity="center"
android:orientation="vertical"
android:rotation="90">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="p3"
android:textSize="48sp" />
</RelativeLayout>
<RelativeLayout
android:id="#+id/p2"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:background="#0000CC"
android:gravity="center"
android:orientation="vertical">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:rotation="-90"
android:text="p2"
android:textSize="48sp" />
</RelativeLayout>
</LinearLayout>
<LinearLayout
android:id="#+id/bottomPlayer"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:background="#00CC00"
android:orientation="vertical">
<RelativeLayout
android:id="#+id/p1"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:gravity="center"
android:orientation="vertical">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="p1"
android:textSize="48sp" />
</RelativeLayout>
</LinearLayout>
Related
I am trying to make a very simple Layout like this:
An image occupying the width of the screen, and a button occupying the width of the screen coming right next to it without any space.
Here is the code I have, it is next to trivial
<?xml version="1.0" encoding="utf-8"?>
<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:orientation="vertical"
tools:context="com.andrew.question.InitialActivity">
<ImageView
android:id="#+id/imageView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="0dp"
android:padding="0dp"
android:src="#drawable/bg" />
<Button
android:id="#+id/button"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="0dp"
android:padding="0dp"
android:text="Hello, I am a Button" />
</LinearLayout>
The problem is, the button does not show up, it shows the image with some space
The emulator is running with screen size 1080 x 1920, and the image has size 720 x 990, if we scale that up, it should be 1080 x 1485, leaving a lot of space for the button, but the image occupied in the middle of the screen somehow that I do not understand.
This is how a screen capture on the emulator look like:
Next, I tried to swap the order of the button and the image (just for the sake of experimenting), I see something like this:
I get this:
<?xml version="1.0" encoding="utf-8"?>
<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:orientation="vertical"
tools:context="com.andrew.question.InitialActivity">
<Button
android:id="#+id/button"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="0dp"
android:padding="0dp"
android:text="Hello, I am a Button" />
<ImageView
android:id="#+id/imageView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="0dp"
android:padding="0dp"
android:src="#drawable/bg" />
</LinearLayout>
Now I figured what happened, it appears that we have lot of spaces between the button and the image and therefore the button have no space. But where does those spaces come from? I wanted them to stick together.
The full source code of this experiment can be found in
https://github.com/cshung/MiscLab/tree/master/Question
The problem occurs here because the LinearLayout container has a height with wrap_content and the system extends the ImageView at its max and then display the TextView below it (thus below the screen height).
To get the right layout, you have to use layout_weight in the child views as follows:
<!-- fill the entire height -->
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
...>
<!-- take 90% of container -->
<ImageView
android:id="#+id/imageView"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="0.9"
... />
<!-- take 10% of container -->
<Button
android:id="#+id/button"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="0.1"
... />
</LinearLayout>
Then, in order to have "no space" for the image, you have to play with the attribute scaleType (see this example) as the following:
Either force the image to fit the widht/height:
<ImageView
...
android:scaleType="fitXY"/>
Or show the center and fill the w/h:
<ImageView
...
android:scaleType="centerCrop"/>
Your drawable/bg is being scaled to fit in id/imageView. The space you're getting is just the window's background not being covered by the image. Change ScaleType of your ImageView to FIT_XY, CENTER_CROP or other and watch a result. See: http://developer.android.com/reference/android/widget/ImageView.ScaleType.html
Your easiest option will probably be to use a RelativeLayout instead of a LinearLayout. I think this is the direction Android has been going lately. Everything seems to be RelativeLayout based. For instance, when you make a new layout in Android Studio, I believe it defaults to RelativeLayout. It used to be LinearLayout in the eclipse extension a while back.
Relative Layout
Using a relative layout instead you should have the following:
<?xml version="1.0" encoding="utf-8"?>
<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="wrap_content"
tools:context="com.andrew.question.InitialActivity">
<ImageView
android:id="#+id/imageView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="0dp"
android:padding="0dp"
android:src="#drawable/bg" />
<Button
android:id="#+id/button"
android:layout_below="#id/imageView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="0dp"
android:padding="0dp"
android:text="Hello, I am a Button" />
</RelativeLayout >
Note that I simply changed LinearLayout to RelativeLayout, removed the setOrientation and then added the following line to your button.
android:layout_below="#id/imageView"
First of all your image is too big so it basically takes up all of the screen space in the first place and pushes the button down the viewable region.There is no need to modify the padding or margin as it is in the LinearLayout and it places all child views one after the other.
Set a desired height to the image view and also a scale type to get what you are expecting.
<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:orientation="vertical"
tools:context="com.andrew.question.InitialActivity">
<ImageView
android:id="#+id/imageView"
android:layout_width="match_parent"
android:scaleType="centerCrop"
android:layout_height="300dp"
android:src="#drawable/bg" />
<Button
android:id="#+id/button"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Hello, I am a Button" />
</LinearLayout>
Screen shot
This is my first post on Stackoverflow.
My question is related to ImageViews : I have a simple XML layout file composed of two LinearLayouts included in a general LinearLayout.
The first LinearLayout contains a simple ImageView, and the second one contains three buttons.
My problem is that the ImageView takes all the space on the screen and therefore the three buttons aren't displayed.
I've done quite a lot of research, I've tried to change everything I could to make it work and the only thing that did the trick was to turn the ImageView layout_width attribute into a dp value.
Why do I have to do that? Is it somehow related to the dimension of the original picture (1280 x 800)?
The XML file is :
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/linearMainCreateTape"
android:layout_height="match_parent"
android:layout_width="match_parent"
android:orientation="horizontal"
tools:context="com.example.anthony.walkmanfreeversion.CreateTapeActivity" >
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="match_parent">
<ImageView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/imageView"
android:src="#drawable/highresoltape1"/>
</LinearLayout>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical">
<Button
android:layout_width="match_parent"
android:layout_height="match_parent"
android:text="Button1"/>
<Button
android:layout_width="match_parent"
android:layout_height="match_parent"
android:text="Button2"/>
<Button
android:layout_width="match_parent"
android:layout_height="match_parent"
android:text="Button3"/>
</LinearLayout>
</LinearLayout>
For anyone having this issue, there is a quick solution for that.
In your imageView XML add the following property:
android:adjustViewBounds="true"
for. eg
<ImageView
android:adjustViewBounds="true"
android:id="#+id/imageView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:srcCompat="#mipmap/ic_launcher"/>
If you are using a Constraint Layout, don't forget to add the constraints.
You could use android:layout_weight in order to define how much space should be taken by the layouts:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/linearMainCreateTape"
android:layout_height="match_parent"
android:layout_width="match_parent"
android:orientation="horizontal"
tools:context="com.example.anthony.walkmanfreeversion.CreateTapeActivity" >
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="0dp"
android:layout_weight="1">
<ImageView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/imageView"
android:src="#drawable/highresoltape1"/>
</LinearLayout>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="0dp"
android:layout_weight="1"
android:orientation="vertical">
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Button1"/>
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Button2"/>
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Button3"/>
</LinearLayout>
</LinearLayout>
In the example above both inner layouts have the same weight, so they bot fill 50% of the height.
If all views reserve the entire available height (match_parent) then the first one wins. So in your case the top level layout (linearMainCreateTape) fills the whole height and the layout which contains the ImageView does the same. So there's nothing left for the three buttons below it.
I'm currently trying to build a simple Contacs Card myself. I just want a Profile picture on the top left, about a quarter to a third of the width, and the Name + description on the right side.
No matter what i try, it always looks very similar to the screenshot below.
this is my Layout:
<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding="#dimen/activity_standard_padding"
android:clipToPadding="false"
android:scrollbarStyle="outsideOverlay"
style="#style/AppBaseThemeCardBG">
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="wrap_content"
style="#style/nowCardStyle">
<LinearLayout
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:orientation="vertical"
android:gravity="top"
android:paddingRight="#dimen/activity_horizontal_margin">
<ImageView
android:id="#+id/schuckCard"
android:scaleType="fitCenter"
android:layout_gravity="top"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</LinearLayout>
<LinearLayout
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="3"
android:orientation="vertical">
<com.mikebdev.douala.widget.RobotoTextView
android:id="#+id/schuckHeader"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:typeface="roboto_condensed_light"
android:text="JESCO SCHUCK"
android:textSize="#dimen/textSizeVeryLarge" />
<com.mikebdev.douala.widget.RobotoTextView
android:id="#+id/body1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:typeface="roboto_condensed_light"
android:text="Description" />
</LinearLayout>
</LinearLayout>
</ScrollView>
This is how it looks like:
I'd like the image to be approximately as wide as the description in the action bar. Obviously i brutally failed here
Use different values for the layout weights. Like 4 for the image and 6 for the content to give it 40‰ of the cards width
Consider using cardslib ( https://github.com/gabrielemariotti/cardslib) to do your card layout. It is very well put together.
Got my stupid Problem fixed:
In the ImageView I have declared android:scaleType="fitCenter" which apparently also centers the ImageView in my Layout.
When changing the scaleType to fitStart I get the result I wanted.
I am trying to scale an ImageButton to fit 50% of the screen width and center it horizontally, no matter what the original image or device screen sizes are. This image describes more accurately what is the final result I am looking for.
Any help would be very much appreciated. Thank you.
One way to achieve the effect you are looking for is to use the weight attribute of the children of a LinearLayout combined with 2 invisible Views that will act as 25% padding on either side. Seriously, though, your question could have been way better, please read the SO posting guidelines next time.
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingTop="20dp">
<View
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="0.25"
android:visibility="invisible"/>
<LinearLayout
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal|top"
android:layout_weight="0.5"
android:orientation="vertical">
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
</LinearLayout>
<View
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="0.25"
android:visibility="invisible"/>
</LinearLayout>
My main Activity has a number of buttons, that fit below each other on a large Tablet screen, but not on a smaller Phone screen. I added a ScrollView, so that the user can scroll down to the other buttons if the screen size requires it:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:background="#drawable/bg"
android:gravity="center_horizontal">
<TextView
android:id="#+id/trackSelectorText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center_horizontal"/>
<ScrollView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:gravity="center_horizontal">
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="foo" />
<!-- More buttons -->
</LinearLayout>
</ScrollView>
</LinearLayout>
This kinda works, however I have a large blank space below the last button (i.e. the ScrollView can scroll down too far). Both on an actual Tablet and on the emulator with a Phone configuration. If I center the inner LinearLayout (instead of center_horizontal), the space is evenly spread between the top and the bottom, which I don't want neither. How do I fix this layout?
I hope this image makes it more clear, imagine that the ScrollView has been completely scrolled down and showing the last buttons. The blank space I mean is the one below Button 6 on the right image:
Try adding this attribute to your ScrollView element.
android:fillViewport="true"
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
android:fillViewport="true" > ... </ScrollVIew>
Ref: ScrollView Ref
Actually, it wasn't really related to the layout (unless I'm missing something). I tried commenting out the background attributed, and it suddenly worked. The background imaged (#drawable/bg) was simply too big and caused the scrolling. I converted the background into a 9-patch image, so it could be scaled automatically, and voilà, the additional space was gone.
Still, if this would've been achievable without 9-patch, I'd still be interested to hear if this can be done in the XML file.
you can use this attribute in scrollview to avoid extra padding at bottom of view
android:overScrollMode="never"
I have checked with my code..Work perfectly:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:background="#drawable/bg"
android:gravity="center_horizontal">
<TextView
android:id="#+id/trackSelectorText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center_horizontal"/>
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:gravity="center_horizontal">
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="foo" />
<!-- More buttons -->
</LinearLayout>
</ScrollView>
</LinearLayout>
May be Help you.......!!