ImageKnife控件会有缓存读取失败

let cacheDir = getContext().cacheDir + “/diskLruCache” 
fs.listFile(cacheDir).then((filenames: Array<string>) => { 
  for (let i = 0; i < filenames.length; i++) { 
    console.log(“TEST== filenames[” + i + "]: " + filenames[i]) 
 
    let filePath = cacheDir + “/” + filenames[i]; 
    fs.unlink(filePath).then(() => { 
      console.log("TEST== 删除文件: " + filePath) 
    }).catch((err: BusinessError) => { 
      console.error("TEST== remove file failed with error message: " + err.message + ", error code: " + err.code); 
    }); 
 
    console.log("TEST== cacheDir: " + cacheDir) 
    console.log(“TEST== 缓存已清除”) 
    this.isCacheClear = false; 
 
  } 
}).catch((err: BusinessError) => { 
  console.error("TEST== list file failed with error message: " + err.message + ", error code: " + err.code); 
});
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