[Android][Kotlin] View 테두리 코드로 변경하는 방법

[상황]

android Button 의 테두리에 Radius를 줄까한다

다만 xml 을 작성하기 뭐해서 코드로 적용할까 한다

 

[참고 플랫폼]

1. Android Studio Bumblebee | 2021.1.1 Patch 2 | Runtime version: 11.0.11

 

[코드]

class MainActivity : AppCompatActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
        findViewById<Button>(R.id.btn_v1).background = simpleRadius(getColor(R.color.purple_200), 30F)
        findViewById<Button>(R.id.btn_v2).background = simpleRadius(getColor(R.color.purple_500), 50F)
        findViewById<Button>(R.id.btn_v3).background = simpleRadius(getColor(R.color.purple_700), 70F)
    }

    private fun simpleRadius(color: Int, radius: Float): GradientDrawable {
        val gradientDrawable = GradientDrawable()
        gradientDrawable.setColor(color)
        gradientDrawable.cornerRadius = radius
        return gradientDrawable
    }
}

 

[코드 : 적용 결과]