1.如何阻止ios上滑动换页

2.click按下后，不抬起，组织了其他拖动事件/click外是否有其他事件

原来文档里有，隐藏的太深了

https://ionicframework.com/docs/components/#gestures

一开始使用nordic app调试，可以直接读出数据，天真的以为体重秤都是使用的标准格式，然后就搜出了阿里体重秤格式（http://gaic.alicdn.com/ztms/ble-protocol/%E9%98%BF%E9%87%8C%E5%B0%8F%E6%99%BA%E8%93%9D%E7%89%99%E9%80%9A%E8%AE%AF%E5%8D%8F%E8%AE%AE-%E4%BA%91%E7%AB%AF%E7%89%88%E7%A7%A4.pdf）

结果尝试了不行，又搜索，找到了小米的格式（https://github.com/oliexdev/openScale/wiki/Xiaomi-Bluetooth-Mi-Scale）

ionic3测试程序如下：

import { Component } from '@angular/core';
import { NavController } from 'ionic-angular';
import 'rxjs/add/operator/toPromise';
// import { BluetoothSerial } from '@ionic-native/bluetooth-serial';
import { BLE } from '@ionic-native/ble';

@Component({
  selector: 'page-home',
  templateUrl: 'home.html',
  providers: [BLE]
})
export class HomePage {

  constructor(
    public navCtrl: NavController,
    private ble: BLE
  ) {

  }

  test1() {
    console.log("scan");
    this.ble.scan([], 10).subscribe(device => {
      console.log(JSON.stringify(device));
    }, error => {
      console.log(error);
    });
  }

  test2() {
    console.log("connect");
    this.ble.connect('88:0F:10:A1:22:AC').subscribe(data => {
      console.log(data);
      console.log(JSON.stringify(data));
    },
      error => {
        console.log(error);
      }
    );
  }

  test4() {
    console.log("read");
    this.ble.startNotification('88:0F:10:A1:22:AC', '181d', '2a9d').subscribe(buffer => {
      var d = new Uint8Array(buffer);
      console.log(d);

    });
  }

  test3() {

  }

  test5() {
    console.log("Notification");
    this.ble.stopNotification('88:0F:10:A1:22:AC', '181d', '2a9d').then(buffer => {
      console.log(buffer);
    });
  }

}

原文：
Plugin Initialization and Lifetime
One instance of a plugin object is created for the life of each WebView. Plugins are not instantiated until they are first referenced by a call from JavaScript, unlesswith an onload name attribute is set to “true” in config.xml. For example,

<feature name="Echo">
    <param name="android-package" value="<full_name_including_namespace>" />
    <param name="onload" value="true" />
</feature>

如果不加，则插件只有在被首次调用时才会被实例化

angular有一套生命周期事件:

https://angular.cn/guide/lifecycle-hooks

ionic也有，其更贴近app交互需求，在开发时应尽量使用ionic这套: