uniapp常见问题

# Invalid Host header

编辑mainfest.json文件，添加如下配置

{
  "h5": {
    "devServer": {
      "disableHostCheck": true
    }
  }
}

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# 蓝牙操作

# 分段写入

const writeValue = '要写入的数据'
var buffercc = new ArrayBuffer(writeValue.length);
var uint8Buf = new Uint8Array(buffercc);
for (var i = 0; i < writeValue.length; i++) {
  uint8Buf[i] = writeValue.charCodeAt(i);
}
/**
 * 分割数组
 * @param {Object} datas
 * @param {Number} size 每个数组的大小
 */
function split_array(datas, size) {
  var result = {};
  var j = 0;
  for (var i = 0; i < datas.length; i += size) {
    result[j] = datas.slice(i, i + size);
    j++;
  }
  return result;
}
var sendloop = split_array(uint8Buf, 20);
// 分包发送数据
function realWriteData(sendloop, i) {
  var data = sendloop[i];
  if (typeof data == "undefined") {
    console.log("操作成功");
    return;
  }
  console.log("第【" + i + "】次写数据" + data);
  var buffer = new ArrayBuffer(data.length);
  var dataView = new DataView(buffer);
  for (var j = 0; j < data.length; j++) {
    dataView.setUint8(j, data[j]);
  }

  uni.writeBLECharacteristicValue({
    deviceId,
    serviceId,
    characteristicId: writeId,
    value: buffer,
    success(res) {
      realWriteData(sendloop, i + 1);
    },
    fail(err) {
      uni.hideLoading();
    },
  });
}
realWriteData(sendloop, 0);

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# 小程序中样式无法穿透问题

在要穿透样式的页面加入以下代码

<script>
    export default {
        // 解除子组件样式隔离
        options: {
            styleIsolation: 'shared'
        },
    }
<script>
<style scoped>
    ::v-deep .container {}
</style>

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#uniapp

上次更新: 2025/07/16, 16:08:11

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