文章目录
教材学习
摘要:选了几本教材《第一行代码 Android 第3版》,记录一下跑案例遇到的问题,和总结一些内容。
第一行代码 Android 第3版
环境配置
gradle配置
- gradle的插件版本是3.4.0
- gradle的版本是5.1.1
- gradle的jdk版本是1.8
- build.gradle配置(之所以修改,是因为有时候有些包下载不下来,可以适当提高gradle版本(如7.0)下载这些包,注意配置一下maven的url,出现ssl报错,记得 配置allowInsecureProtocol true),不知道为什么之后下载完包后运行不了,还是把gradle设置为5.1.1才能运行代码。
c
// Top-level build file where you can add configuration options common to all sub-projects/modules.
buildscript {
ext {
agp_version1 = '3.4.0'
agp_version = '3.5.2'
}
ext.kotlin_version = '1.3.50'
// ext.kotlin_version = '1.4.3'
repositories {
maven {
allowInsecureProtocol true
url 'http://maven.aliyun.com/nexus/content/repositories/jcenter'
}
maven {
allowInsecureProtocol true
url 'https://maven.aliyun.com/repository/gradle-plugin'
}
google()
jcenter()
}
dependencies {
classpath "com.android.tools.build:gradle:$agp_version1"
classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
}
}
allprojects {
repositories {
google()
jcenter()
}
}
task clean(type: Delete) {
delete rootProject.buildDir
}
下载包出现问题
可能是因为配置了android studio的代理,我的是macos 路径在/Users/用户名/.gradle/gradle.properties
,win系统应该在c盘类似的地方。注释掉配置的代理的2行
c
## For more details on how to configure your build environment visit
# http://www.gradle.org/docs/current/userguide/build_environment.html
#
# Specifies the JVM arguments used for the daemon process.
# The setting is particularly useful for tweaking memory settings.
# Default value: -Xmx1024m -XX:MaxPermSize=256m
# org.gradle.jvmargs=-Xmx2048m -XX:MaxPermSize=512m -XX:+HeapDumpOnOutOfMemoryError -Dfile.encoding=UTF-8
#
# When configured, Gradle will run in incubating parallel mode.
# This option should only be used with decoupled projects. More details, visit
# http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
# org.gradle.parallel=true
#Thu Oct 05 22:36:26 CST 2023
# systemProp.http.proxyHost=
# systemProp.http.proxyPort=