参考：https://blog.csdn.net/djh10000/article/details/102261322?ops_request_misc=%257B%2522request%255Fid%2522%253A%2522158480027719726869019177%2522%252C%2522scm%2522%253A%252220140713.130056874…%2522%257D&request_id=158480027719726869019177&biz_id=0&utm_source=distribute.pc_search_result.none-task

导入新项目时报错：

Error:Could not find com.android.tools.build:gradle:3.3.0.
Searched in the following locations:
file:/F:/Android/Android Studio/gradle/m2repository/com/android/tools/build/gradle/3.3.0/gradle-3.0.0.pom
file:/F:/Android/Android Studio/gradle/m2repository/com/android/tools/build/gradle/3.3.0/gradle-3.0.0.jar
https://jcenter.bintray.com/com/android/tools/build/gradle/3.3.0/gradle-3.0.0.pom
https://jcenter.bintray.com/com/android/tools/build/gradle/3.3.0/gradle-3.3.0.jar
Required by:
project :
解决办法:
在repositories{}内添加google()
它会去更换为https://dl.google.com/ 下载

buildscript {
    repositories {
        google()
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.5.0'

        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

allprojects {
    repositories {
        google()
        mavenLocal()
        jcenter()
        maven {
            // All of React Native (JS, Obj-C sources, Android binaries) is installed from npm
            url "$rootDir/../node_modules/react-native/android"
        }
    }
}

ERROR: Minimum supported Gradle version is 5.4.1. Current version is 4.8.

Please fix the project’s Gradle settings.
Fix Gradle wrapper and re-import project
Open Gradle wrapper properties
Gradle settings

这个点击就会自动修复

点击，删除最小sdk
Remove minSdkVersion and sync project

手动删除即可