代码 


    function createTempFile(size) {
      return new Promise((resolve, reject) => {
        plus.io.requestFileSystem(
          plus.io.PRIVATE_DOC,
          function (fs) {
            fs.root.getFile(
              "temp_speed_test11.txt",
              {
                create: true,
              },
              function (fileEntry) {
                fileEntry.createWriter(
         ...