使用 registerForActivityResult 在没有权限的情况下获取联系人

Question

Kotlin 和 Android 开发的新手，在更新了一些库之后，我以前使用的获取联系方式的方法有一些问题，所以我决定尝试在 [=12 定义的新 registerForActivityResult =] 而不是调试我的“遗留”代码。在这样做时，我不再能够在不需要 READ_CONTACTS 权限的情况下让它工作，所以我希望有人可以用线索棒打我并帮助我改变新方法来做以前的方法做了。

谢谢。

以前的方法

override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
    super.onViewCreated(view, savedInstanceState)
    fab.setOnClickListener {
        val intent = Intent(Intent.ACTION_PICK, ContactsContract.Contacts.CONTENT_URI).also {
            it.type = ContactsContract.CommonDataKinds.Phone.CONTENT_TYPE
            startActivityForResult(it, 1)
        }
    }
}

override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
    if (requestCode == 1 && resultCode == RESULT_OK) {
        val projection = arrayOf(
                ContactsContract.CommonDataKinds.Phone.LOOKUP_KEY,
                ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME,
                ContactsContract.CommonDataKinds.Phone.NORMALIZED_NUMBER
        )

        GlobalScope.launch {
            data?.data?.also { contactUri ->
                context?.contentResolver?.query(contactUri, projection, null, null, null)?.apply {
                    moveToFirst()
                    //val id = viewModel.addPerson(DefaultPerson(getString(0), getString(1), getString(2)))
                    close()
                }
            }
        }
    }
}

新方法

private val getPerson = registerForActivityResult(PickContact()) {
    val projection = arrayOf(
            ContactsContract.CommonDataKinds.Phone.LOOKUP_KEY,
            ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME,
            ContactsContract.CommonDataKinds.Phone.NORMALIZED_NUMBER
    )

    context?.contentResolver?.query(it!!.toUri(), projection, null, null, null)?.apply {
        moveToFirst()
        //val id = viewModel.addPerson(DefaultPerson(getString(0), getString(1), getString(2)))
        close()
    }
}

override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
    super.onViewCreated(view, savedInstanceState)
    fab.setOnClickListener {
        getPerson.launch(0)
    }
}

class PickContact : ActivityResultContract<Int, String?>() {
    override fun createIntent(context: Context, input: Int?) =
            Intent(Intent.ACTION_PICK, ContactsContract.Contacts.CONTENT_URI).also {
                it.type = ContactsContract.CommonDataKinds.Phone.CONTENT_TYPE
            }

    override fun parseResult(resultCode: Int, intent: Intent?): String? {
       return if (resultCode == RESULT_OK) intent?.toUri(0) else null
    }
}

Answer 1

看来我搞砸了与 Uri 相关的事情。与此相关的以下更改解决了该问题：

val getPerson = registerForActivityResult(PickContact()) {
    it?.also { contactUri ->
        val projection = arrayOf(
            ContactsContract.CommonDataKinds.Phone.LOOKUP_KEY,
            ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME,
            ContactsContract.CommonDataKinds.Phone.NORMALIZED_NUMBER
        )

        context?.contentResolver?.query(contactUri, projection, null, null, null)?.apply {
            moveToFirst()
            //val id = viewModel.addPerson(DefaultPerson(getString(0), getString(1), getString(2)))
            close()
        }
    }
}

class PickContact : ActivityResultContract<Int, Uri?>() {
    override fun createIntent(context: Context, input: Int?) =
            Intent(Intent.ACTION_PICK, ContactsContract.Contacts.CONTENT_URI).also {
                it.type = ContactsContract.CommonDataKinds.Phone.CONTENT_TYPE
            }

    override fun parseResult(resultCode: Int, intent: Intent?): Uri? {
       return if (resultCode == RESULT_OK) intent?.data else null
    }
}

使用 registerForActivityResult 在没有权限的情况下获取联系人

Getting a Contact Without Permissions Using registerForActivityResult

android

kotlin

android-contacts

android-contentresolver

startactivityforresult