android - 如何在Kotlin中从DeviceAdminReceiver创建 'component'

Question

我正在尝试Android开发，并尝试遵循Android tutorial on device admin。
我有一个 DeviceAdminSample 类，其内容如下:

class DeviceAdminSample : DeviceAdminReceiver() {

    private fun showToast(context: Context, msg: String) {
        context.getString(R.string.admin_receiver_status, msg).let { status ->
            Toast.makeText(context, status, Toast.LENGTH_SHORT).show()
        }
    }

    override fun onEnabled(context: Context, intent: Intent) =
        showToast(context, "admin_receiver_status_enabled")

    override fun onDisableRequested(context: Context, intent: Intent): CharSequence =
        context.getString(R.string.admin_receiver_status_disable_warning)

    override fun onDisabled(context: Context, intent: Intent) =
        showToast(context, context.getString(R.string.admin_receiver_status_disabled))

}

该教程足够好，可以给我这一行:

private fun isActiveAdmin(): Boolean = dpm.isAdminActive(deviceAdminSample)

它还添加了:

Notice that the DevicePolicyManager method isAdminActive() takes a DeviceAdminReceiver component as its argument

对于如何使 DeviceAdminReceiver 组件(大概来自 DeviceAdminSample类)，我一无所知。
该代码的Java版本为:

deviceAdminSample = new ComponentName(this, DeviceAdminSample.class);

Answer 1

就像这样简单:

ComponentName(this, DeviceAdminSample::class.java)

您始终可以做的就是复制教程中的代码，并希望Android Studio将其识别为Java，并要求您将其翻译为Kotlin。如果没有发生，请创建一个新的Java文件，粘贴 new ComponentName(this, DeviceAdminSample.class);并在底部选择 Code> Convert Java to Kotlin。