Android中给自定义文本添加阴影效果

我用xml文件和代码给自定义字体添加阴影，但没有成功，是代码出错吗？

TextView text=(TextView)findViewById(R.id.text1);
Typeface tf = Typeface.createFromAsset(getAssets(), "fonts/gillsans.ttf");
text.setTypeface(tf);

Activity.class :

 TextView text=(TextView)findViewById(R.id.text1);
    Typeface tf = Typeface.createFromAsset(getAssets(), "fonts/gillsans.ttf");
    text.setTypeface(tf);

    Shader textShader=new LinearGradient(2, 0, 4, 60)
                    new int[]{Color.parseColor("#b4e391"),Color.parseColor("#61c419"),Color.parseColor("#b4e391")},
                    new float[]{0, 3,1}, TileMode.MIRROR);
            text.getPaint().setShader(textShader);

main.xml:

<TextView
            android:id="@+id/text1"
            android:gravity="center"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
             android:shadowDx="5"
            android:shadowDy="5"
            android:layout_marginRight="42dp"
            android:layout_marginTop="-10dp"
            android:layout_gravity="right|center_vertical"

            android:shadowColor="#67587686"

            android:shadowRadius="3"
            android:textSize="25dp"
            android:text="99%" />

要设置相关的阴影属性：

android:shadowColor
android:shadowDx
android:shadowDy
android:shadowRadius