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Questions tagged [android-custom-attributes]

64 questions
223
votes
5 answers

Same-named attributes in attrs.xml for custom view

I'm writing a few custom views which share some same-named attributes. In their respective section in attrs.xml I'd like to use the same names for attributes: …
Venator85
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36
votes
2 answers

How do you add user defined properties/values in to the Android manifest file?

I want to add a custom attribute / property into the manifest file, and be able to read it at run time. I want to do this so I can customize the app's behavior via these manifest properties. How can this be done?
inor
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17
votes
1 answer

Changing ConstraintLayout children's margin and size programmatically

I'm writing a custom view to be able to use custom XML attributes to set a view's margin and size based on these attributes, everything worked fine until i got to the part where children of ConstraintLayout get's their margins and size determined by…
chakmeshma
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11
votes
3 answers

Set default colors to Android library

So I have an Android library that I want others to be able to easily customize its color when using it. The problem is that the color is not just a single property (like the view background), but it's more like a theme color (the view background,…
shem
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10
votes
3 answers

Android CustomAttribute in MotionLayout to change Text in TextView

Anyone can help me with the correct way to change TextView's text in MotionLayout... this is what I doing. I'm testing the MotionLayout on a Simple App... I reach the part on the Motion tutorials about CustomAttributes With them you can change the…
Oscar Méndez
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10
votes
2 answers

getResourceId method of TypedArray

I am reading docs about getResourceId() method. It says that: Retrieves the resource identifier for the attribute at index. Note that attribute resource as resolved when the overall TypedArray object is retrieved. As a result, this function…
GPack
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10
votes
1 answer

Safe enum custom attributes in Android

I have a situation that I presume is pretty common. I have a Java enum: public enum Flavour { CHOCOLATE, STRAWBERRY } I have a custom attribute defined in attrs.xml:
Martin
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8
votes
5 answers

Get multiple style attributes with obtainStyledAttributes

I am trying to obtain several of the style attributes of the android namespace from my code. Here I enclose the relevant extract. AttributeSet attrs is the parameter that is passed in to any custom TextView. private static final int[] ATTRS = new…
Boris Strandjev
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6
votes
1 answer

Define custom ViewGroup attributes for children

I am looking for a way to define custom attributes for views that are used by their children. For example layout_centerInParent for children of RelativeLayouts or layout_span for children of TableLayouts.
Kuno
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6
votes
4 answers

How to get attributes with namespace "android" in custom TextView

In custom TextView I'm trying to obtain value of a text attribute (for example). TypedArray values = context.obtainStyledAttributes(attrs, com.android.internal.R.styleable.TextView); String text =…
Dima
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6
votes
0 answers

Using custom attributes in custom views while in preview layout

I use Android Studio and have created my custom view:
Mortalus
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6
votes
2 answers

Custom XML attributes without custom View in Fragment

I'm trying to add custom XML attributes in existing View Adding them to a custom View is not a big deal but I don't know how to access those attributes in a "basic" View (e.g. TextView, LinearLayout, ImageView ...) And this is more difficult when…
Plumillon Forge
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5
votes
1 answer

Custom attributes in style

In my current project styles.xml I try to define: and I use this: