Android 12 A2DP Sink与Source共存实现教程
概述
在Android 12中，实现A2DP Sink与Source共存需要进行一系列配置和编程操作。本文将通过具体步骤和代码示例来教你如何实现这一功能。
流程概览
以下是实现Android 12 A2DP Sink与Source共存的主要步骤：
| 步骤 | 操作 |
|---|---|
| 1 | 配置manifest文件 |
| 2 | 初始化蓝牙 |
| 3 | 创建A2DP Sink连接 |
| 4 | 创建A2DP Source连接 |
具体操作步骤与代码示例
1. 配置manifest文件
首先，在AndroidManifest.xml文件中添加以下权限：
<uses-permission android:name="android.permission.BLUETOOTH"/>
<uses-permission android:name="android.permission.BLUETOOTH_ADMIN"/>
2. 初始化蓝牙
在Activity或Service中初始化蓝牙适配器：
BluetoothAdapter bluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
if (bluetoothAdapter == null) {
// 设备不支持蓝牙
} else {
if (!bluetoothAdapter.isEnabled()) {
Intent enableBtIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
startActivityForResult(enableBtIntent, REQUEST_ENABLE_BT);
}
}
3. 创建A2DP Sink连接
首先，获取蓝牙设备的A2DP Sink profile：
BluetoothProfile.ServiceListener mProfileListener = new BluetoothProfile.ServiceListener() {
public void onServiceConnected(int profile, BluetoothProfile proxy) {
if (profile == BluetoothProfile.A2DP_SINK) {
mBluetoothA2dp = (BluetoothA2dp) proxy;
}
}
public void onServiceDisconnected(int profile) {
if (profile == BluetoothProfile.A2DP_SINK) {
mBluetoothA2dp = null;
}
}
};
bluetoothAdapter.getProfileProxy(context, mProfileListener, BluetoothProfile.A2DP_SINK);
然后，连接A2DP Sink设备：
BluetoothDevice device = bluetoothAdapter.getRemoteDevice(deviceAddress);
mBluetoothA2dp.connect(device);
4. 创建A2DP Source连接
首先，获取蓝牙设备的A2DP Source profile：
BluetoothProfile.ServiceListener mProfileListener = new BluetoothProfile.ServiceListener() {
public void onServiceConnected(int profile, BluetoothProfile proxy) {
if (profile == BluetoothProfile.A2DP) {
mBluetoothA2dpSource = (BluetoothA2dpSource) proxy;
}
}
public void onServiceDisconnected(int profile) {
if (profile == BluetoothProfile.A2DP) {
mBluetoothA2dpSource = null;
}
}
};
bluetoothAdapter.getProfileProxy(context, mProfileListener, BluetoothProfile.A2DP);
然后，连接A2DP Source设备：
BluetoothDevice device = bluetoothAdapter.getRemoteDevice(deviceAddress);
mBluetoothA2dpSource.connect(device);
序列图
sequenceDiagram
participant App
participant BluetoothAdapter
participant BluetoothA2dpSink
participant BluetoothA2dpSource
App->>BluetoothAdapter: 初始化蓝牙适配器
BluetoothAdapter->>BluetoothAdapter: 检查蓝牙是否可用
BluetoothAdapter->>App: 返回蓝牙状态
App->>BluetoothAdapter: 获取A2DP Sink和Source的profile
BluetoothAdapter->>BluetoothA2dpSink: 连接A2DP Sink设备
BluetoothAdapter->>BluetoothA2dpSource: 连接A2DP Source设备
状态图
stateDiagram
[*] --> Initialized
Initialized --> A2dpSinkConnected
Initialized --> A2dpSourceConnected
A2dpSinkConnected --> A2dpSinkDisconnected
A2dpSourceConnected --> A2dpSourceDisconnected
通过以上步骤和代码示例，你可以成功实现Android 12 A2DP Sink与Source共存。希望这篇文章对你有所帮助！
