Android 12 蓝牙权限

Question

我正在尝试使用 BLE 连接到设备，但在 Android 12 上遇到错误。我尝试了很多不同的方法，但找不到任何解决方案。如何申请蓝牙权限？

AndroidManifest.xml

 <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
 <uses-permission android:name="android.permission.BLUETOOTH"
        android:maxSdkVersion="30" />
 <uses-permission android:name="android.permission.BLUETOOTH_ADMIN"
        android:maxSdkVersion="30" />
 <uses-permission android:name="android.permission.BLUETOOTH_SCAN" />
 <uses-permission android:name="android.permission.BLUETOOTH_ADVERTISE" />
 <uses-permission android:name="android.permission.BLUETOOTH_CONNECT" />
 <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />

 <uses-feature android:name="android.hardware.bluetooth_le"
        android:required="true" />

 <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />

和权限请求代码

private static final String[] BLE_PERMISSIONS = new String[]{
            Manifest.permission.ACCESS_COARSE_LOCATION,
            Manifest.permission.ACCESS_FINE_LOCATION,
    };
    
private static final String[] ANDROID_12_BLE_PERMISSIONS = new String[]{
            Manifest.permission.BLUETOOTH_SCAN,
            Manifest.permission.BLUETOOTH_CONNECT,
            Manifest.permission.ACCESS_FINE_LOCATION,
    };

public static void requestBlePermissions(Activity activity, int requestCode) {
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S)
        ActivityCompat.requestPermissions(activity, ANDROID_12_BLE_PERMISSIONS, requestCode);
    else
        ActivityCompat.requestPermissions(activity, BLE_PERMISSIONS, requestCode);
}

错误信息：

Fatal Exception: java.lang.SecurityException
Need android.permission.BLUETOOTH_CONNECT permission for android.content.AttributionSource@3d290817: GattService registerClient

Answer 1

它看起来应该可以工作，但如果您实际上不需要位置权限，我会建议以下。

<uses-permission
    android:name="android.permission.BLUETOOTH_SCAN"
    android:usesPermissionFlags="neverForLocation"
    tools:targetApi="s" />
<uses-permission android:name="android.permission.BLUETOOTH_CONNECT" />
<uses-permission
    android:name="android.permission.BLUETOOTH"
    android:maxSdkVersion="30" />
<uses-permission
    android:name="android.permission.BLUETOOTH_ADMIN"
    android:maxSdkVersion="30" />
<uses-permission
    android:name="android.permission.ACCESS_COARSE_LOCATION"
    android:maxSdkVersion="30" />
<uses-permission
    android:name="android.permission.ACCESS_FINE_LOCATION"
    android:maxSdkVersion="30" />

有权限请求

private static final String[] BLE_PERMISSIONS = new String[]{
        Manifest.permission.ACCESS_COARSE_LOCATION,
        Manifest.permission.ACCESS_FINE_LOCATION
};

@RequiresApi(api = Build.VERSION_CODES.S)
private static final String[] ANDROID_12_BLE_PERMISSIONS = new String[]{
        Manifest.permission.BLUETOOTH_SCAN,
        Manifest.permission.BLUETOOTH_CONNECT
};

Answer 2

我也遵循了 android 文档中的代码。如果您在 android os 12 设备上测试和运行，请删除 max sdk 版本 30。

<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
    <uses-permission android:name="android.permission.BLUETOOTH"/>
     <uses-permission android:name="android.permission.BLUETOOTH_ADMIN"/>
     <uses-permission android:name="android.permission.BLUETOOTH_SCAN" />
     <uses-permission android:name="android.permission.BLUETOOTH_ADVERTISE" />
     <uses-permission android:name="android.permission.BLUETOOTH_CONNECT" />

除此之外你的代码也不错。

您可以使用相同的代码来请求运行时蓝牙权限

private static final String[] BLE_PERMISSIONS = new String[]{
            Manifest.permission.ACCESS_COARSE_LOCATION,
            Manifest.permission.ACCESS_FINE_LOCATION,
    };
    
private static final String[] ANDROID_12_BLE_PERMISSIONS = new String[]{
            Manifest.permission.BLUETOOTH_SCAN,
            Manifest.permission.BLUETOOTH_CONNECT,
            Manifest.permission.ACCESS_FINE_LOCATION,
    };

public static void requestBlePermissions(Activity activity, int requestCode) {
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S)
        ActivityCompat.requestPermissions(activity, ANDROID_12_BLE_PERMISSIONS, requestCode);
    else
        ActivityCompat.requestPermissions(activity, BLE_PERMISSIONS, requestCode);
}

Answer 3

targetSdkVersio 修复 30。（旧是 31）

我修复了错误！