Androidx Camera：清单合并失败：uses-sdk：minSdkVersion 16不能小于版本21

Question

嗨，我正在使用CameraX api来构建自定义相机，在将更新的库依赖项添加到build.gradle文件之后，我得到了以下构建错误消息

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清单合并失败：uses-sdk：minSdkVersion 16不能小于在库[androidx.camera:camera-extensions:1.0.0-alpha08]中声明的版本21 /Users/.gradle/caches/transforms-2/files- 2.1 / f20dc98c605a4c4dbd6030601f9665d3 / camera-extensions-1.0.0-alpha08 / AndroidManifest.xml，因为该库可能使用的API在16中不可用建议：使用兼容的库，其minSdk最多为16，或将该项目的minSdk版本提高到至少21，或使用tools：overrideLibrary =“ androidx.camera.extensions”强制使用（可能导致运行时失败）

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build.gradle文件

apply plugin: 'com.android.application'
apply plugin: 'kotlin-android'
apply plugin: 'kotlin-android-extensions'
apply plugin: 'kotlin-kapt'

android {
        compileSdkVersion 29
        buildToolsVersion "29.0.3"

        defaultConfig {
                    applicationId ""
                    minSdkVersion 16
                    targetSdkVersion 29
                    versionCode 1
                    versionName "1.0"
                    multiDexEnabled true
                    testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
                    vectorDrawables.useSupportLibrary = true
            }

            buildTypes {
                    release {
                        minifyEnabled false
                        proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
                    }
            }

            compileOptions {
                    sourceCompatibility JavaVersion.VERSION_1_8
                    targetCompatibility JavaVersion.VERSION_1_8
            }

            dataBinding {
                    enabled = true
            }

            flavorDimensions 'dimensions'

            productFlavors {

                    dev {
                        //assembleDevDebug crashlyticsUploadDistributionDevDebug
                        applicationId ""
                        versionName "D(0.0)"   //for QA Release
                        versionCode 00
                        proguardFile("proguard-rules.pro")
                    }

                    prod {
                        applicationId ""
                        versionName "1.3" //for prod release
                        versionCode 13
                        proguardFile("proguard-rules.pro")
                        resValue "string", "app_name", "Prod Android"
                    }
            }

    }

dependencies {
        implementation fileTree(dir: 'libs', include: ['*.jar'])
        implementation "androidx.camera:camera-core:1.0.0-beta01"
        implementation "androidx.camera:camera-camera2:1.0.0-beta01"
        implementation "androidx.camera:camera-extensions:1.0.0-alpha08"

}
apply plugin: 'com.google.gms.google-services'

Answer 1

更新您的app.gradle minSdkVersion

来自：

 minSdkVersion 16

至：

minSdkVersion 21