我的项目失败运行，说 "build failed"

Question

我制作了一个项目，其中包含事件列表和一个按钮，用户可以将其设置为闹钟或提醒。

我根据我的观察进行了跟踪，似乎没有错误。

但是当我尝试运行我的应用程序时，错误显示

> Transform artifact materialdatetimepicker.aar (com.wdullaer:materialdatetimepicker:4.2.3) with DexingNoClasspathTransform
AGPBI: {"kind":"error","text":"Default interface methods are only supported starting with Android N (--min-api 24): int com.wdullaer.materialdatetimepicker.date.DateRangeLimiter.getMaxYear()","sources":[{}],"tool":"D8"}

> Task :app:mergeExtDexDebug FAILED

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':app:mergeExtDexDebug'.
> Could not resolve all files for configuration ':app:debugRuntimeClasspath'.
   > Failed to transform artifact 'materialdatetimepicker.aar (com.wdullaer:materialdatetimepicker:4.2.3)' to match attributes {artifactType=android-dex, dexing-enable-desugaring=false, dexing-is-debuggable=true, dexing-min-sdk=16}.
      > Execution failed for DexingNoClasspathTransform: C:\Users\Gerilla Family\.gradle\caches\transforms-2\files-2.1dfb28f22b6828ae75d6c3c01e91a179\materialdatetimepicker-4.2.3\jars\classes.jar.
         > Error while dexing.

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

* Get more help at https://help.gradle.org

Deprecated Gradle features were used in this build, making it incompatible with Gradle 6.0.
Use '--warning-mode all' to show the individual deprecation warnings.
See https://docs.gradle.org/5.4.1/userguide/command_line_interface.html#sec:command_line_warnings

BUILD FAILED in 1m 52s
22 actionable tasks: 3 executed, 19 up-to-date

这是build.gradle

apply plugin: 'com.android.application'

android {
    compileSdkVersion 29
    buildToolsVersion "29.0.3"
    defaultConfig {
        applicationId "com.example.notifier"
        minSdkVersion 16
        targetSdkVersion 29
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation 'androidx.appcompat:appcompat:1.1.0'
    implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'androidx.test:runner:1.2.0'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
    implementation 'com.github.jakebonk:NotifyMe:1.0.1'
    implementation 'com.wdullaer:materialdatetimepicker:4.2.3'
}

Answer 1

这个库最少只支持 Android N。

implementation 'com.wdullaer:materialdatetimepicker:4.2.3'

将此添加到 build.gradle

compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }

Answer 2

您忘记添加 app/build.gradle

https://github.com/wdullaer/MaterialDateTimePicker#setup

Java

android {
 ...
 compileOptions {
   sourceCompatibility JavaVersion.VERSION_1_8
   targetCompatibility JavaVersion.VERSION_1_8
 }
}

科特林

kotlinOptions {
  jvmTarget = JavaVersion.VERSION_1_8.toString()
}

我的项目失败运行，说 "build failed"

my project failed to run , saying "build failed"

java

android

build.gradle

我的项目失败 运行 ，说 "build failed"

my project failed to run , saying "build failed"

java

android

build.gradle

我的项目失败运行，说 "build failed"