Kotlin 面试题

Kotlin setImageResource

setImageResource是一个在ImageView类中定义的方法，用于设置图片资源。

直接使用资源ID设置图片

val imageView: ImageView = findViewById(R.id.my_image_view)
imageView.setImageResource(R.drawable.my_image)

使用资源名称设置图片

val imageView: ImageView = findViewById(R.id.my_image_view)
val packageManager: PackageManager = packageManager
val resId: Int = getPackageName().let { packageName ->
        packageManager.getResourcesForApplication(packageName).getIdentifier("my_image", 
        "drawable", packageName)
}
imageView.setImageResource(resId)

使用资源名称和类型设置图片

val imageView: ImageView = findViewById(R.id.my_image_view)
val resId: Int = resources.getIdentifier("my_image", "drawable", packageName)
imag