HarmonyOS 鸿蒙Next 输入法申请权限问题

输入法键盘，有一个粘贴板功能，用户在系统复制文字，可以出现在粘贴板。

获取粘贴板文字，需要权限。

在键盘申请权限报错:

[GetContext:224]Convert to ui extension context failed

权限申明下:

{
“name” : “ohos.permission.READ_PASTEBOARD”,
“reason”: “$string:permission_paste”,
“usedScene”: {
“abilities”: [
“EntryAbility”
],
“when”:“always”
}
}

申请权限代码如下:

let atManager: abilityAccessCtrl.AtManager = abilityAccessCtrl.createAtManager();
// Request Permissions From User.
atManager.requestPermissionsFromUser(getContext(), permissions).then((data) => {
let grantStatus: Array<number> = data.authResults;
let length: number = grantStatus.length;
let permissive = true;
for (let i = 0; i < length; i++) {
if (grantStatus[i] === 0) {
// User authorized
} else {
permissive = false
return;
}
}
// User authorized succeed.
if (permissive) {
callback && callback();
}
}).catch((err: BusinessError) => {
LogUtil.error(TAG, Failed to request permissions from user. Code is ${err.code}, message is ${err.message});
});