RN嵌入到原生Android应用

好吧 网上资料一大堆 ，我就来记录我自己的坑吧。

国内提供的· http://reactnative.cn/docs/0.42/integration-with-existing-apps.html#content

还有一个填坑的：http://xujinyang.github.io/2016/09/13/%E8%A7%A3%E5%86%B3React-Native-Attached-DialogModule-to-host-with-pending-alert-but-no-FragmentManager/

好吧 我的坑s google了一中午 哎我的青春..

1.index.android.js文件 注意红色位置

'use strict';

import React,{
Component
} from 'react';
import {
AppRegistry,
StyleSheet,
Text,
View
} from 'react-native';

class HelloWorld extends Component {
render() {
return (
<View style={styles.container}>
<Text style={styles.hello}>Hello, Soong sad</Text>
</View>
)
}
}
var styles = StyleSheet.create({
container: {
flex: 1,
justifyContent: 'center',
},
hello: {
fontSize: 20,
textAlign: 'center',
margin: 10,
},
});

AppRegistry.registerComponent('HelloWorld', () => HelloWorld);

2.废话补多少 直接粘上app的build.gradle

一开始依赖是添加不上去的 因为在as的project structure 里面搜到最新的是0.20.0 但是现在最新的是0.40.2  填+ 就是最新的（可以去控制台 npm info react-native查看）

是永久版本的结果解释在嵌入的Activity方法中 mReactinasanceManager.onHostPause等方法找不到 运行后也打不开相应的界面

apply plugin: 'com.android.application'

android {
compileSdkVersion 25
buildToolsVersion "25.0.2"
defaultConfig {
applicationId "com.anytest.soong.helloworld2"
minSdkVersion 21
targetSdkVersion 25
versionCode 1
versionName "1.0"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}
configurations.all {
resolutionStrategy.force 'com.google.code.findbugs:jsr305:1.3.9'
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}

dependencies {
compile fileTree(include: ['*.jar'], dir: 'libs')
androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
exclude group: 'com.android.support', module: 'support-annotations'
})
compile 'com.android.support:support-v4:22.2.1'
compile 'com.android.support.constraint:constraint-layout:1.0.2'
testCompile 'junit:junit:4.12'
compile 'com.facebook.react:react-native:+'
}

 3.project的build.gradle文件 添加代码 强制使用指定版本
// Top-level build file where you can add configuration options common to all sub-projects/modules.

buildscript {
repositories {
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:2.3.0'

// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
}
}

allprojects {
repositories {
jcenter()
maven {
// All of React Native (JS, Android binaries) is installed from npm
url "$rootDir/node_modules/react-native/android"
}
}
}

task clean(type: Delete) {
delete rootProject.buildDir
}