Android - App crashes on Pre-Lollipop devices

Question

My app is running well on Lollipop devices but it keep crashing on prior to version Lollipop. I have simply implemented a banner add in my application with the following code th

Answer 1

You should lower the API in your AndroidManifest.xml Lollipop is API 21.

Check this out: API Levels Example:

   defaultConfig {
        applicationId "com.package.name"
        minSdkVersion 11
        targetSdkVersion 21
        versionCode 1
        versionName "1.0"
    }