Androd系统依赖

androidx.appcompat

android系统最新支持包

implementation 'androidx.appcompat:appcompat:1.1.0'

constraint-layout

ConstraintLayout作为google钦定的代替LinearLayout及RelativeLayout的布局
https://www.jianshu.com/p/ae47b5e66373

implementation 'com.android.support.constraint:constraint-layout:1.1.3'

support-v4

implementation 'com.android.support:support-v4:28.0.0'

recyclerview

implementation 'com.android.support:recyclerview-v7:28.0.0'

implementation 'androidx.recyclerview:recyclerview:1.2.0-alpha01'

implementation 'androidx.recyclerview:recyclerview:1.1.0'

常用配置依赖

implementation fileTree(dir: 'libs', include: ['*.jar'])
androidTestImplementation('com.android.support.test.espresso:espresso-core:2.2.2', {
    exclude group: 'com.android.support', module: 'support-annotations'
})
testImplementation 'junit:junit:4.12'
implementation 'com.android.support:appcompat-v7:28.0.0'
implementation 'com.android.support:design:28.0.0'

support-annotations

注解(Annotations)就是让你给代码检查工具Lint等给一个提示,让它们注意检查这些微妙的代码问题。这些注解就好像元数据标签(mentadata tags)一样和变量,参数,返回值绑定在一起,检查它们是否合法。当运行代码检查工具的时候,注解就会帮助你检查比如空指针,资源类型冲突等问题。
https://www.jianshu.com/p/73110a4b70f8

implementation 'com.android.support:support-annotations:25.0.1'

multidex

解决 64K 限制,方法数超过65535解决方法
https://blog.csdn.net/fan7983377/article/details/73850282

implementation 'com.android.support:multidex:1.0.2'

percent

Google2015年8月推出了一个全新的百分比布局兼容函数库
https://blog.csdn.net/sw5131899/article/details/53995796

implementation  'com.android.support:percent:24.2.0'
compile 'com.android.support:percent:24.2.0'

cardview

implementation 'com.android.support:cardview-v7:26.+'
compile 'com.android.support:cardview-v7:26.+'

ToolBar

ToolBar修改menu菜单中的文字颜色.
http://blog.csdn.net/chenguang79/article/details/49276371
http://blog.csdn.net/mchenys/article/details/51533689

implementation 'com.android.support:appcompat-v7:28.0.0'

design

implementation 'com.google.android.material:material:1.0.0'
implementation 'com.android.support:design:26.+'
compile 'com.android.support:design:26.+'

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