Can not resolve symbol R and build.gradle error

Question

I began to program with Android and so I downloaded Android Studio 2.1.3 and Android SDK and jdk 1.8.0_60 the Gradle version is 2.14.1. I want to program with Android 2.2. In my class called GameView is the problem:

bmp = BitmapFactory.decodeResource(getResources(),
                R.mipmap.ic_launcher);

it can not resolve symbol R

I read that I can solve the problem in these ways:

BUILD -> Clean Project

Tools -> Android -> Sync Project with Gradle Files

File -> Invalidate Caches / Restart

Nothing helped so I tried to changed the Versions in build.gradle(Module: app). I do not really know which Versions I need to program for Android 2.2. Please help me or do you know any other solution to fix that problem?

Thanks!

Answer 1

In my case the solution was to put the minSdkVersion from 8 to 9.

I also changed the versions in build.gradle:

compileSdkVersion 24
    buildToolsVersion "24.0.1"

    defaultConfig {
        applicationId "com.panjutorials.lazypudding"
        minSdkVersion 9
        targetSdkVersion 24
        versionCode 1
        versionName "1.0"

The only disadvantage is that I program with Android Nougat now but that's okay.

Good luck for everybody who has a similar problem.