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androidtyped-arrays

How to get flag attributes from TypedArray?


I have set multiple flag attributes in an android custom textview, how do I recover the attributes using TypedArray

<some.text.view.that.i.defined.TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        font:sanFrancisco="bold|italic"/>


<attr name="fontSanFrancisco">
    <flag name="regular" value="0"/>
    <flag name="bold" value="1"/>
    <flag name="italic" value="2"/>
</attr>

<declare-styleable name="font">
    <attr name="sanFrancisco" format="flag"/>
</declare-styleable>

Solution

  • attrs.xml

      <resources>
        <declare-styleable name="font">
            <attr name="my_sampleFlag" />
        </declare-styleable>
        <attr name="my_sampleFlag">
            <flag name="regular" value="0" />
            <flag name="bold" value="1" />
            <flag name="italic" value="2" />
        </attr>
    </resources>
    

    activity_main.xml

    <?xml version="1.0" encoding="utf-8"?>
    <LinearLayout
      xmlns:android="http://schemas.android.com/apk/res/android"
      xmlns:custom="http://schemas.android.com/apk/res-auto"
      android:orientation="vertical"
      android:layout_width="fill_parent"
      android:layout_height="fill_parent"
      android:gravity="center">
        <com.example.checkstack.MyView
          android:layout_width="fill_parent"
          android:layout_height="wrap_content"
          android:gravity="center"
          android:text="Hello World"
           android:layout_marginTop="20dip"/>
    </LinearLayout>
    

    MyView

    public class MyView extends TextView {
    
        public MyView(Context context) {
            super(context);
            // TODO Auto-generated constructor stub
        }
    
        public MyView(Context context, AttributeSet attrs) {
            super(context, attrs);
            applyCustomFont(context, attrs);
        }
    
        public MyView(Context context, AttributeSet attrs, int defStyle) {
            super(context, attrs, defStyle);
            applyCustomFont(context, attrs);
        }
    
        private void applyCustomFont(Context context, AttributeSet attrs) {
    
              TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.font);
                int textStyle = a.getInt(R.styleable.font_my_sampleFlag, 1);
                setTypeface(null, textStyle);
                 a.recycle();  
        }
    }