蓝牙连接状态广播监听指南-优快云博客

本文介绍了蓝牙连接过程中涉及的权限设置，包括在清单文件中添加蓝牙权限。同时，详细讲解了蓝牙状态改变、配对及连接状态变化时的广播事件，如ACTION_STATE_CHANGED、ACTION_BOND_STATE_CHANGED和ACTION_ACL_CONNECTED、ACTION_ACL_DISCONNECTED，帮助开发者实现对蓝牙设备连接状态的监控。

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1.权限

在清单文件里添加权限

蓝牙权限 <uses-permission android:name="android.permission.BLUETOOTH" />

2.开启蓝牙时发送广播

action: BluetoothAdapter.ACTION_STATE_CHANGED

if (action.equals(BluetoothAdapter.ACTION_STATE_CHANGED)) {
    int state = intent.getIntExtra(BluetoothAdapter.EXTRA_STATE,
            BluetoothAdapter.ERROR);
    switch (state) {
        case BluetoothAdapter.STATE_OFF:
            Log.d("aaa", "STATE_OFF 手机蓝牙关闭");
            break;
        case BluetoothAdapter.STATE_TURNING_OFF:
            Log.d("aaa", "STATE_TURNING_OFF 手机蓝牙正在关闭");
            break;
        case BluetoothAdapter.STATE_ON:
            Log.d("aaa", "STATE_ON 手机蓝牙开启");
            break;
        case BluetoothAdapter.STATE_TURNING_ON:
            Log.d("aaa", "STATE_TURNING_ON 手机蓝牙正在开启");
            break;
    }
}

3.蓝牙配对和解除配对时发送的广播

action: BluetoothDevice.ACTION_BOND_STATE_CHANGED

if (action.equals(BluetoothDevice.ACTION_BOND_STATE_CHANGED)) {
    BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
    String name = device.getName();
    Log.d("aaa", "device name: " + name);
    int state = intent.getIntExtra(BluetoothDevice.EXTRA_BOND_STATE, -1);
    switch (state) {
        case BluetoothDevice.BOND_NONE:
            Log.d("aaa", "解除配对");
            break;
        case BluetoothDevice.BOND_BONDING:
            Log.d("aaa", "正在配对");
            break;
        case BluetoothDevice.BOND_BONDED:
            Log.d("aaa", "配对成功");
            break;
    }
}

4.蓝牙设备连接和断开的广播

action: BluetoothDevice.ACTION_ACL_CONNECTED BluetoothDevice.ACTION_ACL_DISCONNECTED

if (action.equals(BluetoothDevice.ACTION_ACL_CONNECTED)) {
    BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
} else if (action.equals(BluetoothDevice.ACTION_ACL_DISCONNECTED)) {
    BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
}