I am trying to change the color of the little triangle on the Actionbar spinner (sherlock). I have done so using the following code:
<style name="MyTheme" parent="Theme.Sherlock.Light">
<item name="windowActionBarOverlay">true</item>
<item name="homeAsUpIndicator">#drawable/ic_drawer</item>
<item name="actionDropDownStyle">#style/MyActionBarSpinnerStyle</item>
</style>
<style name="MyActionBarSpinnerStyle" parent="#style/Widget.Sherlock.Light.Spinner.DropDown.ActionBar">
<item name="background">#drawable/actionbar_spinner_background</item>
</style>
The icon triangle is changed but it seems to stretch the image to the whole size of the spinner.
image http://dodsonsolutions.com/screens/screen1.png
I am using the patch-9 drawable file that everyone says to use:
spinner http://dodsonsolutions.com/screens/spinner_background_disabled.png
If this is not the correct dimensions of the file then does anyone know what it should be?
Or how do I get it not to stretch and just sit in the bottom right hand corner.
Thank you.
are you using the image that has correct extension?
check the extension of the png file you are using. if it is not ".9.png", change it into .9.png
or if it is .9.png?
there must be a build error of your project. try to rebuild & run. that must be solved.
1.try to define pixel in the area that you want to re-size not all around the image and check pixel more than 3 mostly declaring 1 pixel not working
2.check your xml file to make sure layout_width and layout_height is wrap_content
3.To use 9patch :the image file extension should be png and while you declare area extension become .9.png
Related
So I have been trying to find a way to make a MaterialButton from the Material Components library have perfectly rounded corners. What I mean by this is effectively they have a corner size of 50% the height of the button.
In some of the documentation it indicates that this should be possible with the quote below.
Shape size can be determined using a value that is either absolute or a percentage.
I have a couple of working solutions, firstly measuring the view and setting the corner size that way, but then I discovered that the ExtendedFloatingActionButton uses a RelativeCornerSize object.
However, I still cannot find a solution in XML.
You can use the shapeAppearanceOverlay attribute.
<com.google.android.material.button.MaterialButton
app:shapeAppearanceOverlay="#style/ShapeAppearanceOverlay.Button.50"
.../>
with:
<style name="ShapeAppearanceOverlay.Button.50" parent="">
<item name="cornerFamily">rounded</item>
<item name="cornerSize">50%</item>
</style>
You can use an absolute or a percentage value.
There are specific commands with Material Design.
I could not explain it better than this answer
It works with Android Studio 3.1 or higher
When building my app, I started just using the Theme.Light.NoTitleBar.Fullscreen theme. I built all my layouts for the whole app like this, and got things to look how I want them. Some drawables used in the layouts have their size specifically set, and others are set to wrap_content.
I then decided to switch to the Holo light theme. When I do this, all the drawables used in layouts that are set to wrap_content end up larger. Almost as if they are pulling from a larger bucket. In fact, some look like they've been stretched.
I know the background is black in the older theme one, but that's not an issue (this is actually a layout file that is included in another layout). Obviously there's quite a difference in size between the two.
Here is just my guess based on what I read in this thread.
It can be because you use those images as background property of Button views. This is not safe because depending on default margin values - which are defined in the Theme - Buttons can stretch background images as they need to. If this is the case, then you need to use ImageButton views instead and use setImage*() method to assign images. There you can use scaleType property as it was mentioned by Carlos Robeles.
The only thing that comes to my mind, is that the different themes has different values for the defaultandroid:scaleType attribute of the image views.
Please, try specifying the attribute as some that is good for you, and see what happens using the 2 different themes. For example you can use android:scaleType="center", so your ImageViews would be something like
<ImageView
android:scaleType="center"
android:width="wrap_content"
android:height="wrap_content"
android:src="...
Yo can take a look at the different scale types in the ImageView reference:
http://developer.android.com/reference/android/widget/ImageView.html#attr_android:scaleType
It is not easy to understand what's the meaning of every type, so the best is to take a minute to play with them
My guess is that for some reason, the Holo theme is rendering your images in a lower resolution than Light. I mean that for instance you have your drawables in the drawable-xhdpi and Holo is treating them as drawable-hdpi. In fact, I don't have any evidence of that, but recently I've been messing around with resolutions and the difference seems very familiar to me.
If you don't have your drawables in the drawable-xxhdpi (the biggest resolution) folder, you could try putting them into a higher lever resolution folder, to see what happens.
From android's source code, see https://github.com/android/platform_frameworks_base/blob/master/core/res/res/values/styles.xml
The style which your button will be used in Holo.Light is
<style name="Widget.Holo.Light.Button" parent="Widget.Button">
<item name="android:background">#android:drawable/btn_default_holo_light</item>
<item name="android:textAppearance">?android:attr/textAppearanceMediumInverse</item>
<item name="android:textColor">#android:color/primary_text_holo_light</item>
<item name="android:minHeight">48dip</item>
<item name="android:minWidth">64dip</item>
</style>
See the last two lines. It has default minHeight and minWeight. That's why your button is stretched.
Solutions
1. Set minHeight and minWidth of your Button to 0.
2. Use a custom style like this.
<style name="MyHoloLightButtonStyle">
<item name="android:background">#android:drawable/btn_default_holo_light</item>
<item name="android:textAppearance">?android:attr/textAppearanceMediumInverse</item>
<item name="android:textColor">#android:color/primary_text_holo_light</item>
</style>
3. Use a ImageButton, and set your images by setImage*(not setBackround*) method.
I am creating a menu in an Android app with several list items and corresponding icons. The problem that I'm having is that the icons are being stretched beyond the image size for some reason. I have created a menu like this before without such a problem, and I essentially copied the code over to this new project, primarily only changing the image names and string names.
Here is the code from the menu layout for a single list item:
<TextView
android:id="#+id/listItemCardTransactions"
style="#style/NavigationMenuItem"
android:drawableLeft="#drawable/ic_card_transaction_menu_icon_normal"
android:text="#string/card_transactions" />
Here is the NavigationMenuItem style:
<style name="NavigationMenuItem">
<item name="android:layout_width">match_parent</item>
<item name="android:layout_height">wrap_content</item>
<item name="android:paddingTop">#dimen/menu_list_item_padding</item>
<item name="android:paddingBottom">#dimen/menu_list_item_padding</item>
<item name="android:paddingLeft">#dimen/menu_list_item_padding</item>
<item name="android:drawablePadding">#dimen/menu_list_item_left_padding</item>
<item name="android:gravity">center_vertical</item>
<item name="android:clickable">true</item>
<item name="android:background">#drawable/selector_navigation_item</item>
<item name="android:textSize">#dimen/text_size_menu_item</item>
</style>
Here are the dimensions:
<dimen name="text_size_menu_item">18sp</dimen>
<dimen name="menu_list_item_padding">6dip</dimen>
<dimen name="menu_list_item_left_padding">12dip</dimen>
And here is what the menu looks like right now (I know there are several other problems but those aren't my concern right now). You can see the stretching problem best when you drag-and-drop the image to get the full view:
And what the icon is supposed to look like (this one is grey since I wasn't sure how to easily make the white one visible on a white background):
Anyone know what might be causing the image to stretch past its dimensions like this?
I would follow Barry's advise in the comments, ie use an ImageView + TextView inside a LinearLayout for each item. However, to solve the "the height of the list item is smaller", you could try adding the following attribute to the ImageView:
android:adjustViewBounds="true"
If I'm not mistaken, this should effectively make sure that the view bounds is actually based on the content of the image, and not the aspect ratio (ie, it won't change the height beyond the maximum height of the image itself due to "scaling").
Hope that helps (and also makes a bit sense).
I'm starting with a fully working app, with all the buttons in the right locations and the right sizes... but now I wanted to try out using styles for the first time. In particular I wanted to have the text colour in my buttons a dark blue and the background white. So I wrote the following in styles.xml in res/values ->
<?xml version="1.0" encoding="utf-8"?>
<resources>
<style name="mybut" parent="#android:style/Widget.Button">
<item name="android:textColor">#color/dblue</item>
<item name="android:background">#ffffffff</item>
</style>
</resources>
I modified my button code as follows:
<Button
android:id="#+id/spec"
style="#style/mybut" <-- I added this line here
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="0.12"
android:text="#string/spec" />
In eclipse's XML viewer, the new button looked right in every way. But then at run time, on my android device, the button's height had shrunk by about a third! Any ideas?
EDIT: I'm not very confident about the parent="#android:style/Widget.Button" bit. I'm suspicious that perhaps I'm somehow already using some other style?/theme? and perhaps the line should look something akin to parent="#android:otherstyle/Widget.Button" or parent="#android:style/other.Widget.Button"... or similar.
EDIT: FYI... I'm trying this out on a kind of "home screen" activity which just contains two big buttons. I added the style="#style/mybut" to just one of the two buttons. They are now clearly very different sizes.
EDIT: I noticed that in the manifest I have android:theme="#android:style/Theme.NoTitleBar.Fullscreen" ... does that mean I need to make my button's parent android:theme="#android:style/Theme.NoTitleBar.Fullscreen.Widget.Button" ?? or something like that?
By default, a Button has a 9-patch background, not a simple color. This image has padding and a content area which alters the actual size of the button.
When you change the background, you're stripping that padding, and it appears smaller. The correct way to do this is to create a new 9-patch, based on the old, but with the colors changed.
The problem must be here:
android:layout_weight="0.12"
If you have an action_bar or something like that when you run your app the button is going to shrink. In your preview the action_bar doesn't appear (I'm just guessing).
EDIT:
Here is a sample of a custom button that I use in my app, I put a min height and width.
Instead of using: parent="#android:style/Widget.Button" I use: parent="android:Widget.Button"
<style name="ButtonCustom" parent="android:Widget.Button">
<item name="android:background">#drawable/btn_default_holo_light</item>
<item name="android:minHeight">48dip</item>
<item name="android:minWidth">64dip</item>
<item name="android:textColor">#fff</item>
</style>
I am trying to create my own text appearance by following this
http://brainflush.wordpress.com/2009/03/15/understanding-android-themes-and-styles/
I just want my text appearance style which inherits every thing #android:attr/textAppearanceSmall except it uses a smaller size than attr/textAppearanceSmall
So I did this:
<resource>
<style name="MyDefaultTextAppearance" parent="#android:attr/textAppearanceSmall">
<item name="android:textSize">10sp</item>
</style>
</resources>
My question is what is the textSize for textAppearanceSmall for tablet? I just want to use a size smaller than android default text size for textAppearanceSmall. I am not sure if textSize 10sp is the right answer.
Thank you.
If you checkout the SDK folder, you can find that there is no seperate TextAppearance style defined for tablets. I checked the android-14 folder but couldnt find seperate entries for large screens. Please do search for yourself. You can find the resources in \android-sdk\platforms\android-14\data\res