Android Studio launched Android project Error SDK version inconsistency solution

Android project development in the new project and then run ' when the error com.android.support:appcompat-v7 dependent error

View the parameters that are configured under Build.gredle:

The Build.gradle file for the open project is configured as follows:

Configuration parameters
allprojects {    repositories {        jcenter ()        maven {            url "https://maven.google.com"    }}}

Ok, after the addition is completed, you need to synchronize your project at this point and finally reboot! Re-open the project and find the error no project is working properly!

Android Studio launched Android project Error SDK version inconsistency solution