Custom XML attributes for imported custom view

jmar777 · by **jmar777** » Fri Sep 12, 2008 9:06 pm

I am playing around with custom views and would like to include them in an external library (jar) for the sake of re-usability. I am trying to create some custom attributes for these views that can be set declaratively in the xml.

I have taken a look at the closely related tutorial on PocketBook (http://blog.pocketjourney.com/2008/05/0 ... urce-files - forum won't let me use URL tag on first post?), but from what I can tell it only applies to custom views that exist within an Android project.

Since I am trying to develop these views in an external library, the tutorial hasn't directly related to my situation. Therefore, when I am using one of these imported custom views in an Android project, I can't get the ADT to recognize the custom attributes.

For example, if I put the following in my main.xml:

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Using xml Syntax Highlighting

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:m="http://schemas.android.com/apk/res/martin.android.widget"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
        >
        <martin.android.widget.NumberPadEditText
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:text="0.00"
                android:textColor="#222244"
                m:keypadBackgroundDrawable="@drawable/popup_bg"
                />
</LinearLayout>
Parsed in 0.002 seconds,  using GeSHi 1.0.8.4

... I get an error stating "No resource identifier found for attribute 'keypadBackgroundDrawable' in package 'martin.android.widget"

To be honest, I am completely clueless as to where android looks to locate the custom attributes. I have tried including an R.java inside of the martin.android.widget package, but either it was formatted incorrectly, or this is the wrong place. Here are the contents of the R.java file:

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Using java Syntax Highlighting

package martin.android.widget;
 
public final class R {
        /**
         * Custom xml attributes for custom widgets
         */
        public static final class attr {
                public static final int keypadBackgroundDrawable=0x7f010000;
        }
        
    public static final class styleable {
        public static final int[] NumberPadEditText = {
            0x7f010000
        };
        public static final int NumberPadEditText_keypadBackgroundDrawable = 0;
    };
}
Parsed in 0.033 seconds,  using GeSHi 1.0.8.4

I was assuming that since R.java generally contains resource identifiers, that this is where android would be looking. I have a suspicion I'm on the wrong track altogether though - any pointers would be much appreciated!

Custom XML attributes for imported custom view

Custom XML attributes for imported custom view

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