Android studio-The selected device is incompatible

The selected device is incompatible-android studio测试机型版本不兼容

代码中build.gradle中minSdkVersion配置为21

而所选机型API为19

则会报The selected device is incompatible而无法测试

解决方法：

调低代码要求的api值或更改为api值更高的测试机型