本文源码地址：https://github.com/smart1024/AndroidWithReact.git
首先需要搭建好react-native环境请参考下面两份文档：
- 脸书官方文档：http://facebook.github.io/react-native/docs/getting-started.html
- React-Native中文网：http://reactnative.cn/docs/0.48/getting-started.html
上面步骤比较简单，不再赘述。
然后是项目结构，生成的几个重要文件我已重点画出看下图
项目结构.jpg
最后是集成Reac-Native的具体步骤
-
去到项目的根路径，创建package.json文件
创建package.json文件.jpg
这是生成的json文件内容：
{
"name": "MyReactNativeApp",
"version": "0.0.1",
"private": true,
"scripts": {
"start": "node node_modules/react-native/local-cli/cli.js start"
}
}
其中name本只能小写我改成MyReactNativeApp
然后运行：npm install --save react@16.0.0-alpha.12 react-native最终的json文件如下：
{
"name": "MyReactNativeApp",
"version": "0.0.1",
"private": true,
"scripts": {
"start": "node node_modules/react-native/local-cli/cli.js start"
},
"dependencies": {
"react": "^16.0.0-alpha.12",
"react-native": "^0.48.3"
}
}
- 创建index.android.js文件，内容如下
'use strict';
import React from 'react';
import {
AppRegistry,
StyleSheet,
Text,
View
} from 'react-native';
class HelloWorld extends React.Component {
render() {
return (
<View style={styles.container}>
<Text style={styles.hello}>Hello, World</Text>
</View>
)
}
}
var styles = StyleSheet.create({
container: {
flex: 1,
justifyContent: 'center',
},
hello: {
fontSize: 20,
textAlign: 'center',
margin: 10,
},
});
AppRegistry.registerComponent('MyReactNativeApp', () => HelloWorld);
- 在app module下build.gradle添加react-native和在全局build.gradle在maven依赖：
dependencies {
...
compile "com.facebook.react:react-native:+" // From node_modules.
}
allprojects {
repositories {
jcenter()
maven {
// All of React Native (JS, Android binaries) is installed from npm
url "$rootDir/node_modules/react-native/android"
}
}
}
- 配置权限
<uses-permission android:name="android.permission.INTERNET" />
在manifest.xml文件中添加（真机模式晃动手机可调出此界面）
<activity android:name="com.facebook.react.devsupport.DevSettingsActivity"/>
5.创建Activity并注册到清单文件下面是核心代码：
public class MyReactActivity extends Activity implements DefaultHardwareBackBtnHandler {
private static final int OVERLAY_PERMISSION_REQ_CODE =100 ;
private ReactRootView mReactRootView;
private ReactInstanceManager mReactInstanceManager;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//这里是动态申请窗口权限
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
if (!Settings.canDrawOverlays(this)) {
Intent intent = new Intent(Settings.ACTION_MANAGE_OVERLAY_PERMISSION,
Uri.parse("package:" + getPackageName()));
startActivityForResult(intent, OVERLAY_PERMISSION_REQ_CODE);
}
}
mReactRootView = new ReactRootView(this);
mReactInstanceManager = ReactInstanceManager.builder()
.setApplication(getApplication())
.setBundleAssetName("index.android.bundle")
.setJSMainModuleName("index.android")
.addPackage(new MainReactPackage())
.setUseDeveloperSupport(BuildConfig.DEBUG)
.setInitialLifecycleState(LifecycleState.RESUMED)
.build();
mReactRootView.startReactApplication(mReactInstanceManager, "MyReactNativeApp", null);
setContentView(mReactRootView);
}
@Override
protected void onPause() {
super.onPause();
if (mReactInstanceManager != null) {
mReactInstanceManager.onHostPause(this);
}
}
@Override
protected void onResume() {
super.onResume();
if (mReactInstanceManager != null) {
mReactInstanceManager.onHostResume(this, this);
}
}
@Override
protected void onDestroy() {
super.onDestroy();
if (mReactInstanceManager != null) {
mReactInstanceManager.onHostDestroy(this);
}
}
@Override
public void onBackPressed() {
if (mReactInstanceManager != null) {
mReactInstanceManager.onBackPressed();
} else {
super.onBackPressed();
}
}
//真机晃动弹出dev menu菜单
@Override
public boolean onKeyUp(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_MENU && mReactInstanceManager != null) {
mReactInstanceManager.showDevOptionsDialog();
return true;
}
return super.onKeyUp(keyCode, event);
}
@Override
public void invokeDefaultOnBackPressed() {
super.onBackPressed();
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == OVERLAY_PERMISSION_REQ_CODE) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
if (!Settings.canDrawOverlays(this)) {
// SYSTEM_ALERT_WINDOW permission not granted...
Log.e("onActivityResult","SYSTEM_ALERT_WINDOW permission not granted");
}
}
}
}
注册到清单文件
<activity android:name=".MyReactActivity" android:theme="@style/Theme.AppCompat.Light.NoActionBar">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
- 在项目中创建assets文件在项目根路径运行如下命令
react-native bundle \
--platform android \
--dev false \
--entry-file ./index.android.js \
--bundle-output ./app/src/main/assets/index.android.bundle \
--sourcemap-output ./app/src/main/assets/index.android.map\
--assets-dest ./app/src/main/res/
会在assets下生成三个文件分别是：
assets下文件.jpg
- 测试集成结果：
- 去项目根路径运行packager：npm start并保持窗口不关闭
- 在android studio中点击run app按钮运行
运行结果.jpg
会遇到的问题
- findbugs版本问题:
在app module 的build.gradle文件中加入如下
android {
...
// Warning:Conflict with dependency 'com.google.code.findbugs:jsr305'. Resolved versions for app (3.0.0
configurations.all {
resolutionStrategy.force 'com.google.code.findbugs:jsr305:3.0.0'
}
}
- Android SDK版本选择问题：
按如下配置即可
compileSdkVersion 23
buildToolsVersion "23.0.1"
defaultConfig {
applicationId "com.lilin.androidwithreact"
// Manifest merger failed : uses-sdk:minSdkVersion 15 cannot be smaller than version 16 declared in library [com.facebook.react:react-native:0.20.1] /Users/lilin/AndroidStudioProjects/AndroidIntegratedWithReact/android/AndroidWithReact/app/build/intermediates/exploded-aar/com.facebook.react/react-native/0.20.1/AndroidManifest.xml
minSdkVersion 16
targetSdkVersion 23
versionCode 1
versionName "1.0"
需要注意的点：
package.json中的name的值MyReactNativeApp与
index.android.js中的AppRegistry.registerComponent('MyReactNativeApp', () =>HelloWorld);
以及MyReactActivity中mReactRootView.startReactApplication(mReactInstanceManager, "MyReactNativeApp", null) 务必保持一致
怎么样简单吧，如果有点帮助，帮忙点个赞O(∩_∩)O谢谢！
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