1：当在项目目录下运行Flow命令报错：
Wrong version of Flow. The config specifies version ^0.45.0 but this is version 0.49.0 Could not start Flow server!
解决办法：
运行如下命令： npm install flow-bin@0.45.0 -g
2: 运行Androd版本时遇到：
SDK location not found. Define location with sdk.dir in the local.properties file or with an ANDROID_HOME
environment variable.
environment variable.
解决办法：
设置Android sdk 环境变量：
方法一：
$ cd (进入用户登陆目录)
$ ls –al .bash_profile(.bash_profile为隐藏文件，因此要用ls –a命令查找)
$vi .bash_profile(用vi编辑.bash_profile)
方法二：
$ cd (进入用户登陆目录)
$ touch .bash_profile
$open -e .bash_profile
将Android sdk设置加入 .bash_profile 中：
export ANDROID_HOME=/Users/scofield/Library/Developer/Xamarin/android-sdk-macosx/
export PATH=${PATH}:${ANDROID_HOME}/tools
export PATH=${PATH}:${ANDROID_HOME}/platform-tools
验证是否配置成功：
运行adb -version命令
Android Debug Bridge version 1.0.31
运行 $android
会打开Android SDK Manager窗口
3:运行run命令时报：
Packager can't listen on port 8081
解决办法：
首先找出哪些应用在使用8081端口
运行命令： lsof -i :8081
删除相关进程：kill pid
4: React-Native到0.44版本后Navigator 不能用的问题
Navigator is deprecated and has been removed from this package. It can now be installed and imp
orted from react-native-deprecated-custom-components instead of react-native. Learn about alternative navigation solutions at http://facebook.github.io/react-native/docs/navigation.html
解决办法：
1.在项目根目录下运行如下命令：
npm install react-native-deprecated-custom-components --save
2：在js文件中加入
import NavigationExperimental from 'react-native-deprecated-custom-components';
并将NavigationExperimental.Navigator替换Navigator
chmod a+x android-ndk-r10c-darwin-x86_64.bin
2. 解压出文件
./android-ndk-r10c-darwin-x86_64.bin
6:在调用this.setState()方法时报 undefined is not a function ( evaluating setState）
需要将点击事件方法申明 this.onPress = this.onPress.bind(this);或者在点击事件中写成
onPress={this.onPress.bind(this)}
7:在start packager时出现：Packager cann't listen on port 8081
是由于之前启动的Packager还在运行，所以需要关闭它。
首先查看哪些进程在占用8081端口
lsof -i :8081
然后shut down the other process
kill -9 PID
Packager can't listen on port 8081
Most likely another process is already using this port
