今天的比較簡單 想要發送信件的話 利用intent即可

private fun sendEmail() {
    Log.i("Send email", "")

    val TO = arrayOf("kllilee21@gmail.com")
    val CC = arrayOf("kllilee21@gmail.com")
    val emailIntent = Intent(Intent.ACTION_SEND)
    emailIntent.data = Uri.parse("mailto:")
    emailIntent.type = "text/plain"


    emailIntent.putExtra(Intent.EXTRA_EMAIL, TO)
    emailIntent.putExtra(Intent.EXTRA_CC, CC)
    emailIntent.putExtra(Intent.EXTRA_SUBJECT, "Your subject")
    emailIntent.putExtra(Intent.EXTRA_TEXT, "Email message goes here")

    try {
        startActivity(Intent.createChooser(emailIntent, "Send mail..."))
        finish()
        Log.i("Finished sending email", "")
    } catch (ex: android.content.ActivityNotFoundException) {
        Toast.makeText(this@MainActivity,
                "There is no email client installed.", Toast.LENGTH_SHORT).show()
    }

}

這樣的話就可以利用系統叫出內建的email發送系統

明天來看看有沒有可以不利用系統內建的來發送

今天先到這裡