app下的gradle:
dependencies { compile fileTree(dir: 'libs', include: ['*.jar']) androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', { exclude group: 'com.android.support', module: 'support-annotations' }) compile 'com.android.support:appcompat-v7:25.1.1' compile 'com.android.support.constraint:constraint-layout:1.0.2' compile 'com.android.support:design:25.1.1' compile 'com.android.support:support-v4:25.1.1' testCompile 'junit:junit:4.12' }
project根目录下gradle:
ext { compileSdkVersion = 25 buildToolsVersion = "25.1.1"//相应版本 supportLibVersion = "25.1.1"//相应版本 }
一定要注意:所有的版本要一致!!!比如我的都是25.1.1