React-Native 使用第三方库时遇到的坑及解决方法

使用RN开发有一年左右的时间了，从刚开始的不熟悉到现在填了不少坑后总结出一些经验。打算记录一下提醒自己也让其他人也知道怎样解决。废话不多说，直接进入正题=====>

运行版本：
"react-native": "0.54.1",
"react-native-navigation": "1.1.407",
"jcore-react-native": "^1.2.5",
"jpush-react-native": "^2.2.0",
"react-native-swiper": "1.5.13",
"react-native-tab-navigator": "0.3.4"

1.安卓环境在react-native-navigation的导航环境下，部分功能在页面返回后缺失，如react-native-swiper轮播失效，react-native-scrollable-tab-view的UI效果失灵

解决方法如下步骤：
第一步：~项目路径/node_modules/react-native-navigation/android/app/src/main/java/com/reactnativenavigation/NavigationApplication.java
最下方加上这段代码

@Nullable
    public abstract MainReactPackage readyMainReactPackage();

第二步：~项目目录/node_modules/react-native-navigation/android/app/src/main/java/com/reactnativenavigation/react/NavigationReactGateway.java
将原来的getPackages的方法替换为：

@Override
        protected List<ReactPackage> getPackages() {
            List<ReactPackage> result = new ArrayList<>();

            List<ReactPackage> additionalReactPackages = NavigationApplication.instance.createAdditionalReactPackages();
            if (additionalReactPackages != null)
                result.addAll(additionalReactPackages);

            if (!containsInstanceOfClass(result, MainReactPackage.class)) {
                MainReactPackage mainReactPackage = NavigationApplication.instance.readyMainReactPackage();
                if (mainReactPackage == null) {
                    result.add(new MainReactPackage());
                } else {
                    result.add(mainReactPackage);
                }
            }
            if (!containsInstanceOfClass(result, NavigationReactPackage.class)) {
                result.add(new NavigationReactPackage());
            }

            return result;
        }

2.安卓使用JPush的RN版本的时候，应用关闭的情况下点击推送，推送跳转无法跳转，解决方法如下

~项目目录/node_modules/jpush-react-native/android/src/main/java/cn/jpush/reactnativejpush/JPushModule.java
加上这段代码

    @ReactMethod
    public void appExit() {
        mRAC = null;
    }

然后在js代码里面的一般加载JPush方法的Main类里面加上

const JPushModuleOrigin = NativeModules.JPushModule

componentWillUnmount() {
        if (Platform.OS === 'android') {
            JPushModuleOrigin.appExit();
        }
}

3.使用native-echarts第三方插件做图标的时候，安卓环境下会出现图标无法显示和会滑动的bug，解决方法如下

~项目目录/node_modules/native-echarts/scr/components/Echarts/index.js下的代码替换为如下代码

import React, { Component } from 'react';
import { WebView, View, StyleSheet , Platform } from 'react-native';
import renderChart from './renderChart';
import echarts from './echarts.min';

export default class App extends Component {
  componentWillReceiveProps(nextProps) {
    if(nextProps.option !== this.props.option) {
      this.refs.chart.reload();
    }
  }

  render() {

    let scalesPageToFit = Platform.OS === 'ios' ? false : true
    let source = Platform.OS === 'ios' ? require('./tpl.html') : {'uri':'file:///android_asset/tpl.html'}

    return (
      <View style={{flex: 1, height: this.props.height || 400,}}>
        <WebView
          ref="chart"
          scrollEnabled = {false}
          injectedJavaScript = {renderChart(this.props)}
          style={{
            height: this.props.height || 400,
            backgroundColor: this.props.backgroundColor || 'transparent'
          }}
          scalesPageToFit={false}
          source = {source}
          onMessage={event => this.props.onPress ? this.props.onPress(JSON.parse(event.nativeEvent.data)) : null}
        />
      </View>
    );
  }
}

然后将~项目目录/node_modules/native-echarts/scr/components/Echarts/tpl.html文件替换到
~项目目录/android/app/src/main/assets/tpl.html即可