compileSdkVersion，buildToolsVersion还有targetSdkVersion要一致，从而避免build的时候报错

Android Studio里的app的build.gradle文件：

 1 android {
 2     compileSdkVersion 24
 3     buildToolsVersion "24.0.0"
 4 
 5     defaultConfig {
 6         applicationId "com.wingsofts.rxretrofitmvpdagger2databinding"
 7         minSdkVersion 15
 8         targetSdkVersion 24
 9         versionCode 1
10         versionName "1.0"
11     }
12     buildTypes {
13         release {
14             minifyEnabled false
15             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
16         }
17     }
18     dataBinding {
19         enabled = true
20     }
21 }