[移动开发]Anroid Apps targeting Android 12 and higher are required to specify an explicit value

启动Android studio 报以下错误:

 Apps targeting Android 12 and higher are required to specify 
an explicit value for `android:exported` when the corresponding 
component has an intent filter defined.

项目中app下的build.gralde如下所示:

plugins {
    id 'com.android.application'
}

android {
    compileSdkVersion 31
    buildToolsVersion "30.0.3"

    defaultConfig {
        applicationId "com.test.myapplication"
        minSdkVersion 16
        targetSdkVersion 31
        versionCode 1
        versionName "1.0"

        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
    }

    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }
    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }
}

dependencies {

    implementation 'androidx.appcompat:appcompat:1.4.0'
    implementation 'com.google.android.material:material:1.4.0'
    implementation 'androidx.constraintlayout:constraintlayout:2.0.1'
    testImplementation 'junit:junit:4.+'
    androidTestImplementation 'androidx.test.ext:junit:1.1.2'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0'
}

项目build.gradle 中的?compileSdkVersion 31? 与 targetSdkVersion 31? 版本过高，修改为compileSdkVersion 30? 、targetSdkVersion 30

修改完后，又出现以下问题：

The minCompileSdk (31) specified in a
dependency's AAR metadata (META-INF/com/android/build/gradle/aar-metadata.properties)
is greater than this module's compileSdkVersion (android-30).
Dependency: androidx.appcompat:appcompat:1.4.0.
AAR metadata file: C:\Users\hong\.gradle\caches\transforms-2\files-2.1\b70a38d32b407cc6af29424a07f54027\appcompat-1.4.0\META-INF\com\android\build\gradle\aar-metadata.properties.

重点在?androidx.appcompat:appcompat:1.4.0. 这个版本也过高了，只要降低版本即可，如:

androidx.appcompat:appcompat:1.2.0.

重新编译，就通过了

最终的build.gradle 如下:

plugins {
    id 'com.android.application'
}

android {
    compileSdkVersion 30
    buildToolsVersion "30.0.3"

    defaultConfig {
        applicationId "com.test.myapplication"
        minSdkVersion 16
        targetSdkVersion 30
        versionCode 1
        versionName "1.0"

        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
    }

    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }
    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }
}

dependencies {

    implementation 'androidx.appcompat:appcompat:1.2.0'
    implementation 'com.google.android.material:material:1.4.0'
    implementation 'androidx.constraintlayout:constraintlayout:2.0.1'
    testImplementation 'junit:junit:4.+'
    androidTestImplementation 'androidx.test.ext:junit:1.1.2'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0'
}