百度Harmony Next 定位SDK提供后台持续定位的能力，可在应用退至后台的状态下，持续记录位置信息。具体使用方法如下：

let wantAgentInfo: wantAgent.WantAgentInfo = {
    wants: [
         {
            bundleName: "bundleName",
            abilityName: "abilityName"
         }
    ],
    operationType: wantAgent.OperationType.START_ABILITY,
    requestCode: 0,
    wantAgentFlags: [wantAgent.WantAgentFlags.UPDATE_PRESENT_FLAG]
};
wantAgent.getWantAgent(wantAgentInfo).then((wantAgentObj: WantAgent) => {
   if (locClient != null) {
    locClient.enableLocInBackground(wantAgentObj);
}
});

if (this.client != null) {
    this.client.disableLocInBackground();
}

“abilities”: [
...
"backgroundModes": [
     // 长时任务类型的配置项
     "location"
]
]
并申请长时任务权限