Modifying custom attributes in XML file, in a

Question

I have a custom attribute in a subview class defined in XML file:

    <com.mysubView>
    android:id="@+id/board"
    android:layout_height="match_parent"
    android:layout_width="match_parent"
    cus:Count="0"
    />

I would like to be able to access it main_activity.java to set a value to Count like this:

findViewById(R.id.board).setCount(10);

Is it possible?

Note: attrs.xml is already populated with corresponding stylable.

Here is a related article on custom attributes Here is constructor to the sub-view class:

public MySubView (Context c, AttributeSet attrs) {
    super(c, attrs);
}

Blackbelt · Accepted Answer · 2015-10-15 10:21:30Z

1

You can change the value of count. Of course you need a method with signature setCount(int), defined inside mysubView, and you will have to cast the return result of findViewById to mysubView

((mysubView)findViewById(R.id.board)).setCount(10);

this way you will able to change any specific property/behaviour you defined in mysubView

answered Oct 15, 2015 at 10:21

Blackbelt

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6 Comments

theMobDog Over a year ago

Can you please elaborate? What would the method implementation would look like? which variable should I be accessing? for example: do I just get the int hand-off directly to the method with the signature? where do I assign it to?

Blackbelt Over a year ago

did your write the View's subclass?

theMobDog Over a year ago

yeah. tested and working. I am adding the void setCount(int test) to it now. I dunno what to assign it to. Count is not available.

Blackbelt Over a year ago

can you post the the constructor of your CustomView ?

theMobDog Over a year ago

public MySubView (Context c, AttributeSet attrs) { super(c, attrs); }

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