React 本机运行保持在 IDLE 状态

Question

这是我第一次在 Ubuntu 18.04 LTS 上设置 react native。我已完成设置，并尝试使用react-native run-android 命令在设备上运行该应用程序。 这是我在终端中得到的输出，

ron@lenovo:~/react/app$ react-native run-android
Scanning folders for symlinks in /home/ron/react/app/node_modules (9ms)
JS server already running.
Building and installing the app on the device (cd android && ./gradlew installDebug)...
Starting a Gradle Daemon, 1 busy Daemon could not be reused, use --status for details
NDK is missing a "platforms" directory.
If you are using NDK, verify the ndk.dir is set to a valid NDK directory.  It is currently set to /home/ron/Android/Sdk/ndk-bundle.
If you are not using NDK, unset the NDK variable from ANDROID_NDK_HOME or local.properties to remove this warning.

File /home/ron/.android/repositories.cfg could not be loaded.
Checking the license for package Android SDK Build-Tools 26.0.3 in /home/ron/Android/Sdk/licenses
License for package Android SDK Build-Tools 26.0.3 accepted.
Preparing "Install Android SDK Build-Tools 26.0.3 (revision: 26.0.3)".
<=============> 100% CONFIGURING
> IDLE

它永远停留在这个空闲位置。什么是修复或这个问题？

Answer 1

解决办法是安装Android SDK rev. 26.0.3。您可以从 Android Studio 的SDK Manager 菜单中的File > Settings 安装它。希望这会有所帮助。

Answer 2

我今天遇到了同样的错误。解决方案是创建一个名为 local.properties 的文件并在其中写入以下行：

sdk.dir=[the position of android sdk]

示例：

sdk.dir=N\:\\Users\\andy\\AppData\\Local\\Android\\Sdk

您可以通过android studio获取sdk android：Android Studio - How to Change Android SDK Path

希望这将帮助您和其他刚开始学习本机反应的人。