装android sdk的时候把以前的sdk目录删除了，造成以下错误

需要点击

然后就会自动去下好了。

另外在运行 react-native run-android的时候弹出Unable to load script from assets index.android.bundle的错误，搜了下SO找到了解决方法

1.(in project directory) mkdir android/app/src/main/assets

2.react-native bundle --platform android --dev false --entry-file index.js --bundle-output android/app/src/main/assets/index.android.bundle --assets-dest android/app/src/main/res

3.react-native run-android

https://stackoverflow.com/questions/44446523/unable-to-load-script-from-assets-index-android-bundle-on-windows

Could not find property 'MYAPP_RELEASE_STORE_PASSWORD' on SigningConfig_Decorated

MYAPP_RELEASE_STORE_FILE=KEYSTORE_NAME.keystore

MYAPP_RELEASE_KEY_ALIAS=YOUR_ALIAS

MYAPP_RELEASE_STORE_PASSWORD=123456

MYAPP_RELEASE_KEY_PASSWORD=123456

Cannot read property 'State' of undefined

查了下是GestureHandler.js 调用的RNGestureHandlerModule.State这行报错误，google的结果是把react-native-gesture-handler移除再安装

npm install --save react-native-gesture-handler

react-native link react-native-gesture-handler

https://stackoverflow.com/questions/53391855/undefined-is-not-an-object-after-updating-react-navigation-to-v3

在启动两个模拟器的时候，直接调用react-native run-android --deviceId=emualte-xxx，会报错，找不到mainActivity,把另外一个关掉可以了

对着https://reactnative.cn/docs/0.43/signed-apk-android.html 导出android的时候报这个错error duplicate resources，参考

https://stackoverflow.com/questions/52632950/react-native-0-57-1-android-duplicate-resources解决

连手机报这个错误

https://stackoverflow.com/questions/44446523/unable-to-load-script-from-assets-index-android-bundle-on-windows

如下解决

(in project directory) mkdir android/app/src/main/assets

react-native bundle --platform android --dev false --entry-file index.js --bundle-output android/app/src/main/assets/index.android.bundle --assets-dest android/app/src/main/res

react-native run-android

使用react-native-video后，build.gradle中 minSdkVersion = 26

然后cd android,gradlew clean

react-native-vector-icons 在安卓上不显示

Edit android/app/build.gradle ( NOT android/build.gradle ) and add the following:

apply from:"../../node_modules/react-native-vector-icons/fonts.gradle"

couldn't find DSO to load: libreactnativejni.so 

在用这个的时候发生了以下错误，couldn't find DSO to load: libreactnativejni.so，照帖子的方式在app/build.gradle中添加

https://stackoverflow.com/questions/43368926/android-reactnative-java-lang-unsatisfiedlinkerrorcould-find-dso-to-load-libre

未解决

在android机usb连接的时候

Could not run adb reverse: Command failed: C:\Users\Administrator\AppData\Local\Android\Sdk/platform-tools/adb -s cba0167a reverse tcp:8081 tcp:8081

这个用了很久的时间搜索也没解决

开了个模拟器可以，现在模拟器上测试

今天搜到了adb reverse得安卓5.0以上，或者手机和电脑在一个wifi下用wifi

https://stackoverflow.com/questions/31525431/getting-error-closed-twice-on-adb-reverse/41013327#41013327

ScrollableTabView

点击标题无法点击，内容也不显示的时候，检查下它的parent的flex有没有被设置成1

查看崩溃信息

adb logcat AndroidRuntime:E *:S

清除

gradlew clean

导出apk

https://facebook.github.io/react-native/docs/signed-apk-android.html

$ cd android

$ ./gradlew assembleRelease

adb install $file; 

注意下如果出来的是unsigned,那么看下有没有遗漏修改 buildTypes {

        release {

            ...

            signingConfig signingConfigs.release

        }

    }

C:\Python27\python.exe systrace.py --time=10 -o trace.html sched gfx view -a com.doubanmovie