讯飞文字转语音只能在标准基座里可以运行

讯飞文字转语音在真机测试或打包apk测试无法将文字转化语音。
会报错
Cannot read property 'createUtility' of null

打印SpeechUtility也是null

let SpeechUtility = plus.android.importClass('com.iflytek.cloud.SpeechUtility');  
SpeechUtility.createUtility(main,"appid");  
let SynthesizerPlayer = plus.android.importClass('com.iflytek.cloud.SpeechSynthesizer');  
let play = SynthesizerPlayer.createSynthesizer(main, null);