For example when I define a style tag in XML, all views of all types get that theme. Is there any solution to difference between styles for view types? here is some code:
<?xml version="1.0" encoding="utf-8"?>
<resources>
<style name="buttonTheme" parent="android:Theme.Holo">
<item name="android:drawableLeft">#drawable/ic_launcher</item>
</style>
<style name="textTheme" parent="android:Theme.Holo">
<item name="android:textColor">#ff0000</item>
</style>
</resources>
I think there's a small confusion in terms between a style and a theme. You are talking about defining custom styles for a widget in your application. A Theme is a collection of these styles applied globally to an Activity or Application. The custom styles you have created for a button and text view can be applied to a new custom theme so all buttons and text items share the same attributes.
I think what you are looking for is something more like this.
<style name="ApplicationTheme" parent="android:Theme.Holo">
<item name="buttonStyle">#style/MyButtonStyle</item>
<item name="textAppearance">#style/MyTextAppearance</item>
</style>
<style name="MyButtonStyle" parent="android:Widget.Button">
<item name="android:drawableLeft">#drawable/ic_launcher</item>
</style>
<style name="MyTextAppearance" parent="android:TextAppearance">
<item name="android:textColor">#ff0000</item>
</style>
Here, we have created two new styles (one for the button appearance and one for default text appearance), and then applied those as attributes in a new custom theme. You can now apply this theme in your manifest or in View constructors by referencing #style/ApplicationTheme or R.style.ApplicationTheme
You can do this by adding the attribute android:theme="" to the specific activity in your AndroidManifest.xml file
Example:
<activity android:theme="#style/CustomTheme">
Related
I'm using two themes for my Android application, AppTheme and AppThemeDark. I've set up a custom button style for each in the theme definitions:
<!-- Theme definitions -->
<style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
...
<item name="android:buttonStyle">#style/ButtonStyle</item>
...
</style>
<style name="AppThemeDark" parent="Theme.AppCompat.DayNight.NoActionBar">
...
<item name="android:buttonStyle">#style/ButtonStyleDark</item>
...
</style>
<!-- Button styles -->
<style name="ButtonStyle" parent="#style/Widget.AppCompat.Button">
<item name="android:ellipsize">end</item>
<item name="android:maxLines">2</item>
</style>
<style name="ButtonStyleDark" parent="ButtonStyle">
<item name="android:background">#drawable/gray_button_bg</item>
</style>
Note that my AppTheme button, ButtonStyle, doesn't override the background of Widget.AppCompat.Button, but AppThemeDark's button style inherits ButtonStyle and it changes the background.
Now, I would like to extend that buttonStyle with a new custom style for special buttons, e.g. PrimaryButton. In the AppTheme case, I do not want to change the background of the button. In the AppThemeDark case, i do want to change the background of the button.
I would like to define PrimaryButton and have it either inherit the background (in the case of AppTheme) or use a new background (AppThemeDark). Something like this:
<style name="PrimaryButton">
<item name="android:background">?attr/drawablePrimaryButtonBackground</item>
</style>
But as far as I can tell, there's no way to define an attribute in AppThemeDark as a new drawable and AppTheme as "inherit from parent". Setting to transparent obviously makes the button background in AppTheme transparent.
Is my only option to figure out what drawable is being used for a background in Widget.AppCompat.Button and define it locally?
To answer my own question...
You can dig up the private Android resource and use a local copy to retain the background. That locks you into one specific Android version of the drawable though (unless you copy multiple versions over).
You can set whole styles as attributes if the styles between your two themes are different enough to warrant it:
attrs.xml:
<attr name="stylePrimaryButton" format="reference" />
styles.xml:
<!-- Theme definitions -->
<style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
...
<item name="stylePrimaryButton">#style/PrimaryButton</item>
...
</style>
<style name="AppThemeDark" parent="Theme.AppCompat.DayNight.NoActionBar">
...
<item name="stylePrimaryButton">#style/PrimaryButtonDark</item>
...
</style>
<!-- Primary button styles -->
<style name="PrimaryButton">
<!-- no need to override anything -->
</style>
<style name="PrimaryButtonDark">
<item name="android:background">#drawable/dark_background</item>
</style>
layout.xml:
<Button style="?attr/stylePrimaryButton"
...
I would like to set a specific style for the whole application.
I added the style in the androidmanifest.xml, and I defined the style as follow:
<style name="myStyle">
<item name="android:background">#000000</item>
<item name="android:textColor">#FFFFFF</item>
</style>
This style changes the background and the textcolor for the whole application, though I would like to change also the text color of the buttons: this sentence works when defining a button but I would like to add it to the style of the application
Thanks a lot
<style name="myStyle" parent="android:Theme">
<item name="android:buttonStyle">#style/Your button style</item>
</style>
source:How do I apply a style to all buttons of an Android application
Hello I'm making a custom theme for my app. I want to have a custom ActionBar and background for the rest of the app (below the ActionBar). I'm wondering how to do the background. Right now I have:
<style name="MyTheme" parent="android:Theme.Holo">
<item name="android:actionBarStyle">#style/dActionBar</item>
</style>
<style name="dActionBar" parent="#android:style/Widget.Holo.ActionBar">
<item name="android:background">#4C721D</item>
<item name="android:textColor">#FFFFFF</item>
</style>
Would I just have to do <item name-"android:background"></item> in MyTheme or would I have to create another style? After I create this do I need to put it in the res/styles folder? Also what are the API restrictions on this, if any?
Don't forget to apply your theme to your application in your AndroidManifest.xml.
<application android:theme="#style/CustomActivityTheme" ... />
You can find all the information about styling the Actionbar here.
To style your ActionBar with a nice Holo-look, try this website
Hope this helps!
Try to use below code in your Style.xml file
<resources>
<style name="Theme.Sample" parent="Theme.AppCompat">
<item name="android:colorBackground">#color/primary_material_dark</item>
<item name="actionBarTheme">#color/colorGray</item>
</style>
</resources>
Just need to use android:colorBackground as a name of item to define the background color like as below:
<item name="android:colorBackground">#color/primary_material_dark</item>
Hope you get your answer,Thanks.
I'm using Theme.Dialog on one of my activities. I'm using setTitle(mMyTitle) to set the title. I would also like to set the textAppearance. How would I go about this?
I'm not sure if I can make my own title layout for this, since I'm already using Theme.Dialog.
Create a new style and extend Theme.Dialog then override what you want to change. Example:
<?xml version="1.0" encoding="utf-8"?>
<resources>
<style name="MyActivityDialogTheme" parent="#android:style/Theme.Dialog">
<item name="android:windowTitleStyle">#style/MyTitleStyle</item>
</style>
<style name="MyTitleStyle" parent="#android:style/DialogWindowTitle">
<item name="android:textAppearance">#style/MyTextApperance</item>
</style>
<style name="MyTextApperance" parent="#android:style/TextAppearance.DialogWindowTitle">
<item name="android:textColor">#ffff0000</item>
<item name="android:textSize">36sp</item>
</style>
</resources>
Anything you don't specify will use the Dialog defaults. I've only specified the colour and font size of the textApperance in this example.
Now just use MyActivityDialogTheme (or whatever you call your style) as the theme for your activity instead of Theme.Dialog.
Check this out first, but I believe what you're looking for is about 3/4 the way down when it discusses tweaking a built-in resource by referencing it as a parent for your custom theme. As such:
<color name="custom_theme_color">#b0b0ff</color>
<style name="CustomTheme" parent="android:Theme.Dialog">
<item name="android:windowBackground">#color/custom_theme_color</item>
<item name="android:colorBackground">#color/custom_theme_color</item>
</style>
Hope it's what you're looking for.
I have a style that includes textColor, textSize, textStyle and typeface. When applied directly to an EditText widget, the color of the text is as specified (as well as the other attributes), but when applied as a theme to the activity or the entire application, the size is fine but the color is not applied. What I am missing?
<?xml version="1.0" encoding="utf-8"?>
<resources>
<style name="fap" parent="android:Theme.Holo">
<item name="android:textSize">24sp</item>
<item name="android:textColor">#FF0000</item>
<item name="android:textStyle">normal</item>
<item name="android:typeface">normal</item>
</style>
</resources>
This is quite simple : you are not overriding android default style, your just creating a new one which extends android:Widget.EditText. Thus, the style is not applied.
To correct this, into your theme definition, just add :
<item name="android:editTextStyle">#style/fap</item>
Now, each time Android instanciate an EditText, when it load default style values, it will find your fap style.
Edit:
searching through android's source code is very usefull. Check https://android.googlesource.com/platform/frameworks/base/+/master/core/res/res/values/attrs.xml
https://android.googlesource.com/platform/frameworks/base/+/master/core/res/res/values/themes.xml
https://android.googlesource.com/platform/frameworks/base/+/master/core/res/res/values/styles.xml
https://android.googlesource.com/platform/frameworks/base/+/master/core/java/android/widget/EditText.java
for example.
EditText widget just can't get these parameters from an activity theme. It gets its default style from the android:editTextStyle parameter of the activity theme. So you have to create your own style:
<style name="MyEditText" parent="android:Widget.EditText">
<item name="android:textSize">24sp</item>
<item name="android:textColor">#FF0000</item>
<item name="android:textStyle">normal</item>
<item name="android:typeface">normal</item>
</style>
And then set it as EditText style in the activity theme:
<style name="fap" parent="android:Theme.Holo">
<item name="android:editTextStyle">#style/MyEditText</item>
</style>
Hope this will work because I haven't tried this code.