蓝牙打印机

1、在Android项目的AndroidManifest.xml文件中，需声明以下权限：
2、运行时还需要请求权限
function requestPermissions() {
var permissions = [
"android.permission.BLUETOOTH",
"android.permission.BLUETOOTH_ADMIN",
"android.permission.BLUETOOTH_SCAN",
"android.permission.BLUETOOTH_CONNECT"
];
plus.android.requestPermissions(
permissions,
function(result) {
// 权限申请成功后的回调
console.log("权限申请成功");
},
function(error) {
console.error("权限申请失败：" + error.message);
}
);
}

运行后报错啊
Uncaught java.lang.SecurityException: Need android.permission.BLUETOOTH_SCAN permission for android.content.AttributionSource@8a1bcf4c: Starting discovery.;at android.bluetooth.BluetoothAdapter.startDiscovery at printer.html:1