今天本來想用react-native這個(gè)庫做視頻，
首先我執(zhí)行命令

yarn add react-native-video

然后link

react-native link react-native-video

如果link失敗，就自己添加

react-native-video-.png

react-native-video-one.png

然后我運(yùn)行項(xiàng)目，結(jié)果出錯(cuò)了，報(bào)錯(cuò)如下：

                                                                     
FAILURE: Build failed with an exception.

* What went wrong:
A problem occurred configuring project ':app'.
> Could not resolve all dependencies for configuration ':app:_debugApk'.
   > A problem occurred configuring project ':react-native-video'.
      > Could not resolve all dependencies for configuration ':react-native-video:_debugPublishCopy'.
         > Could not find com.android.support:support-annotations:27.0.0.
           Searched in the following locations:
               file:/C:/Users/asus/AppData/Local/Android/sdk/extras/android/m2repository/com/android/support/support-annotation
s/27.0.0/support-annotations-27.0.0.pom
               file:/C:/Users/asus/AppData/Local/Android/sdk/extras/android/m2repository/com/android/support/support-annotation
s/27.0.0/support-annotations-27.0.0.jar
               file:/D:/RNProject/Small/android/sdk-manager/com/android/support/support-annotations/27.0.0/support-annotations-
27.0.0.jar
           Required by:
               Small:react-native-video:unspecified > com.google.android.exoplayer:extension-okhttp:2.7.3
               Small:react-native-video:unspecified > com.google.android.exoplayer:exoplayer:2.7.3 > com.google.android.exoplay
er:exoplayer-core:2.7.3
               Small:react-native-video:unspecified > com.google.android.exoplayer:exoplayer:2.7.3 > com.google.android.exoplay
er:exoplayer-dash:2.7.3
               Small:react-native-video:unspecified > com.google.android.exoplayer:exoplayer:2.7.3 > com.google.android.exoplay
er:exoplayer-hls:2.7.3
               Small:react-native-video:unspecified > com.google.android.exoplayer:exoplayer:2.7.3 > com.google.android.exoplay
er:exoplayer-smoothstreaming:2.7.3
               Small:react-native-video:unspecified > com.google.android.exoplayer:exoplayer:2.7.3 > com.google.android.exoplay
er:exoplayer-ui:2.7.3

這個(gè)問題的核心在于這句話：

Could not find com.android.support:support-annotations:27.0.0.

在github上我找到了答案：

react-native-video-five.png

于是我就開始各種百度，谷歌，終于讓我找到了解決方案：
這種問題主要是兩個(gè)方面：
1、Repository問題。需要在android studio上更新版本。
詳情見：https://stackoverflow.com/questions/37026322/failed-to-sync-gradle-could-not-find-com-android-supportsupport-annotations23

react-native-video-three.png

2.還有一種情況就是沒有加goole 依賴(哈哈，我自創(chuàng)的名字)
在build.grade(不是app里面那個(gè)喲)
添加：

maven {
url "https://maven.google.com"
}

react-native-video-four.png

再次運(yùn)行！完美執(zhí)行！搞定！