在构建应用时，应该如何设置build.gradle？

// build.gradle (Project)
buildscript {
    repositories {
        google()
        mavenCentral()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:7.0.2'
        // 其他插件依赖
    }
}

allprojects {
    repositories {
        google()
        mavenCentral()
    }
}

// build.gradle (Module: app)
plugins {
    id 'com.android.application'
}

android {
    compileSdkVersion 30
    defaultConfig {
        applicationId "com.example.myapp"
        minSdkVersion 21
        targetSdkVersion 30
        versionCode 1
        versionName "1.0"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    implementation 'androidx.appcompat:appcompat:1.3.1'
    implementation 'com.google.android.material:material:1.4.0'
    // 其他依赖
}

configurations.all {
    resolutionStrategy {
        force 'com.android.support:support-v4:28.0.0'
    }
}