安卓运行项目常见报错及解决措施

小白学鸿蒙2026-03-26 8:10

java.lang.NullPointerException: Cannot invoke "String.length()" because "＜parameter1＞" is null

Unable to make field private final java.lang.String java.io.File.path accessible: module java.base does not "opens java.io" to unnamed module @1878fed0

修改 gradle.properties

org.gradle.jvmargs=-Xmx4096m -Dfile.encoding=UTF-8 --add-opens=java.base/java.io=ALL-UNNAMED --add-opens=java.base/java.lang=ALL-UNNAMED --add-opens=java.base/java.util=ALL-UNNAMED

配置电脑全局 Gradle 镜像，一次设置，所有项目永久生效，再也不用每个项目改配置了

C:\Users\Administrator.gradle

init.gradle

bash 复制代码

// ==================== 全局 Gradle 国内镜像（全版本兼容，永不报错）====================
allprojects {
    buildscript {
        repositories {
            maven { url 'https://maven.aliyun.com/repository/google' }
            maven { url 'https://maven.aliyun.com/repository/maven-central' }
            maven { url 'https://maven.aliyun.com/repository/gradle-plugin' }
            google()
            mavenCentral()
        }
    }
    repositories {
        maven { url 'https://maven.aliyun.com/repository/google' }
        maven { url 'https://maven.aliyun.com/repository/maven-central' }
        google()
        mavenCentral()
    }
}

settingsEvaluated { settings ->
    settings.pluginManagement {
        repositories {
            maven { url 'https://maven.aliyun.com/repository/gradle-plugin' }
            maven { url 'https://maven.aliyun.com/repository/google' }
            maven { url 'https://maven.aliyun.com/repository/maven-central' }
            gradlePluginPortal()
            google()
            mavenCentral()
        }
    }
}