How to receive images via Bluetooth

问题

I want to receive images via Bluetooth and display that image in Image View.I know how to pass image from one activity to another activity but i don't no how to receive images using Bluetooth.

回答1:

Android framework provides access to the Bluetooth functionality through the Android Bluetooth APIs. These APIs let applications wirelessly connect to other Bluetooth devices, enabling point-to-point and multipoint wireless features.

Using the Bluetooth APIs, an Android application can perform the following:

• Scan for other Bluetooth devices
• Query the local Bluetooth adapter for paired Bluetooth devices
• Establish RFCOMM channels
• Connect to other devices through service discovery
• Transfer data to and from other devices
• Manage multiple connections

Create a BluetoothSocket and connect to it:

BluetoothSocket socket = device.createRfcommSocketToServiceRecord(<your-device>.getUuids()[0].getUuid());
socket.connect();

Listen to the socket (Get data from the device)

InputStream inStream = socket.getInputStream();
while (inStream.available() > 0) {
    inStream.read(); // <-- data from device
}

Write to the socket (Send data to the device)

OutputStream outStream = socket.getOutputStream();
byte[] bytes = <some-data>
outStream.write(bytes);

and for more details you can read Bluetooth Api Documentation here

来源：https://stackoverflow.com/questions/43930776/how-to-receive-images-via-bluetooth