我目前正在阅读ConstraintLayout教程,并坚持一个特定的步骤(
https://codelabs.developers.google.com/codelabs/constraint-layout/#10).
来源在这里(https://github.com/googlecodelabs/constraint-layout).
根据下面的说明,它表示添加垂直屏障,但我没有在菜单中看到添加选项.实际上整个菜单选项看起来不同. “添加垂直屏障”菜单在哪里？
Right click on ConstraintLayout in the blueprint or the Component
Tree. You will see the Add Vertical barrier and Add Horizontal barrier
options.
我正在运行Android 2.3.3.
build.gradle(模块：app)
@H_403_16@apply plugin: 'com.android.application' android { compileSdkVersion 25 buildToolsVersion "25.0.3" defaultConfig { applicationId "com.google.googleio" minSdkVersion 22 targetSdkVersion 25 versionCode 1 versionName "1.0" } buildTypes { release { minifyEnabled false proguardFiles getDefaultProguardFile('proguard-android.txt'),'proguard-rules.pro' } } } dependencies { compile fileTree(dir: 'libs',include: ['*.jar']) testCompile 'junit:junit:4.12' compile 'com.android.support.constraint:constraint-layout:1.1.0-beta1' }