<button type="default" size="default" bindtap="tapStartCompass">
  开始监听罗盘
</button>
<button type="default" size="default" bindtap="tapCompassChange">
  查看罗盘数据变化
</button>
<button type="default" size="default" bindtap="tapStopCompass">
  停止监听罗盘
</button>

Page({
  tapCompassChange() {
    tt.onCompassChange((res) => {
      console.log(res);
      console.log(`罗盘方向: ${res.direction}`);
    });
  },
  tapStartCompass() {
    tt.startCompass({
      success(res) {
        //调用开始监听罗盘成功 startCompass:ok
        console.log("调用开始监听罗盘成功", res.errMsg);
      },
      fail(res) {
        // 调用开始监听罗盘失败 startCompass:fail
        console.log("调用开始监听罗盘失败", res.errMsg);
      },
    });
  },
  tapStopCompass() {
    tt.stopCompass({
      success(res) {
        //调用停止监听罗盘成功 stopCompass:ok
        console.log("调用停止监听罗盘成功", res.errMsg);
      },
      fail(res) {
        // 调用停止监听罗盘失败 stopCompass:fail
        console.log("调用停止监听罗盘失败", res.errMsg);
      },
    });
  },
});