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added in API level 28

Connection.RttTextStream

public static final class Connection.RttTextStream
extends Object

java.lang.Object
   ↳ android.telecom.Connection.RttTextStream


Provides methods to read and write RTT data to/from the in-call app.

Summary

Public methods

String read()

Reads a string from the in-call app, blocking if there is no data available.

String readImmediately()

Non-blocking version of read().

void write(String input)

Writes the string into the text stream to the UI for this RTT call.

Inherited methods

Public methods

read

added in API level 28
public String read ()

Reads a string from the in-call app, blocking if there is no data available. Returns null if the RTT conversation has been terminated and there is no further data to read.

This method is not thread-safe -- calling it from multiple threads simultaneously may lead to interleaved text.

Returns
String A string containing text entered by the user, or null if the conversation has been terminated or if there was an error while reading.

Throws
IOException

readImmediately

added in API level 28
public String readImmediately ()

Non-blocking version of read(). Returns null if there is nothing to be read.

Returns
String A string containing text entered by the user, or null if the user has not entered any new text yet.

Throws
IOException

write

added in API level 28
public void write (String input)

Writes the string into the text stream to the UI for this RTT call. Since RTT transmits text in real-time, this method should be called as often as text snippets are received from the remote user, even if it is only one character.

This method is not thread-safe -- calling it from multiple threads simultaneously may lead to interleaved text.

Throws
IOException