MAMORIO SDKとFirebaseを組み合わせて嵌まった！ ref: http://qiita.com/KazuyukiEguchi/items/9247cc2ac1a571b350d9

AndroidMonitorの出力

10-19 13:02:52.960 16160-16160/.mamorio E/AndroidRuntime: FATAL EXCEPTION: main
                                                          Process: .mamorio, PID: 16160
                                                          java.lang.LinkageError: com.google.android.gms.common.GoogleApiAvailability
                                                              at com.google.android.gms.common.api.GoogleApiClient$Builder.<init>(Unknown Source)
                                                              at otoshimono.com.lost.mamorio.sdk.BackgroundRangingService.initGoogleAPI(BackgroundRangingService.java:1638)
                                                              at otoshimono.com.lost.mamorio.sdk.BackgroundRangingService.beginRanging(BackgroundRangingService.java:1499)
                                                              at otoshimono.com.lost.mamorio.sdk.BackgroundRangingService.onStartCommand(BackgroundRangingService.java:561)
                                                              at android.app.ActivityThread.handleServiceArgs(ActivityThread.java:3178)
                                                              at android.app.ActivityThread.access$2400(ActivityThread.java:173)
                                                              at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1534)
                                                              at android.os.Handler.dispatchMessage(Handler.java:102)
                                                              at android.os.Looper.loop(Looper.java:148)
                                                              at android.app.ActivityThread.main(ActivityThread.java:5639)
                                                              at java.lang.reflect.Method.invoke(Native Method)
                                                              at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:727)
                                                              at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:617)

build.gradle(Modile

apply plugin: 'com.android.application'

android {
    compileSdkVersion 26
    buildToolsVersion "26.0.0"
    defaultConfig {
        applicationId "jp.eguchi.android.mamoriosample2"
        minSdkVersion 23
        targetSdkVersion 26
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
        exclude group: 'com.android.support', module: 'support-annotations'
    })
    compile 'com.android.support:appcompat-v7:26.+'
    compile 'com.android.support.constraint:constraint-layout:1.0.2'
    testCompile 'junit:junit:4.12'

    compile 'jp.mamorio:mamorioSDK:7.1'

    compile 'com.google.android.gms:play-services-location:11.0.4'
    compile 'com.google.firebase:firebase-core:11.0.4'
}

apply plugin: 'com.google.gms.google-services'