Protect toasts from being disabled by feature introduced in Android >= 4.2 (Jelly Bean).

Add dependency to gradle build script:

repositories {
    maven { url "https://jitpack.io"  }
}

dependencies {
    compile 'moe.banana:toast-compat:<version>'
}

And toast:

ToastCompat.makeText(context, "hello world!", Toast.LENGTH_SHORT).show();

(The MIT License)