Can not install, something wrong when sync gradle about mapscaleview HOT 4 CLOSED

Sorry, not connected to this lib
Check your class Map.java:95

from mapscaleview.

This is my gradle

`buildscript {
repositories {
jcenter()
}
dependencies {
if (rootProject.ext.has("gradle_classpath")) {
classpath rootProject.ext.gradle_classpath
} else {
logger.warn('classpath not found in rootProject')
classpath 'com.android.tools.build:gradle:2.3.2'
}
}
}

apply plugin: 'com.android.application'

android {

if (rootProject.ext.has("compileSdkVersion")) {
    compileSdkVersion rootProject.ext.compileSdkVersion
    buildToolsVersion rootProject.ext.buildToolsVersion
} else {
    logger.warn('compileSdkVersion not found in rootProject')
    compileSdkVersion 24
    buildToolsVersion "25.0.0"
}

defaultConfig {
    applicationId "de.j4velin.mapsmeasure"
    if (!project.file("key.properties").exists()) {
        resValue "string", "maps_api_key", "0000"
    }
}

signingConfigs {
    release
}

buildTypes {
    release {
        signingConfig signingConfigs.release
        zipAlignEnabled true
        minifyEnabled true
        shrinkResources false
        proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-project.txt'
    }
    debug {
        signingConfig signingConfigs.release
        zipAlignEnabled true
        minifyEnabled false
        shrinkResources false
        debuggable true
    }
}

if (System.getenv("TRAVIS")) {
    lintOptions {
        ignoreWarnings true
        abortOnError false
    }
}

}

dependencies {
compile 'com.android.support:support-v4:25.3.1'
compile 'com.google.android.gms:play-services-location:10.2.6'
compile 'com.google.android.gms:play-services-maps:10.2.6'
compile 'com.github.pengrad:mapscaleview:1.2.1'
}`

from mapscaleview.

Add repositories { jcenter() } outside of buildscript.

Or maybe you enabled offline mode in android studio.
Try ./gradlew in terminal

from mapscaleview.

Thanks you,

solved by this:

allprojects {
repositories {
jcenter()
}
}

Next, I found this error.
When implementing the code:
05-19 19:47:50.286 15545-15545/com.barayuda.mapsmeasure E/AndroidRuntime: FATAL EXCEPTION: main Process: com.barayuda.mapsmeasure, PID: 15545 java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.barayuda.mapsmeasure/com.barayuda.mapsmeasure.Map}: java.lang.NullPointerException: Attempt to invoke virtual method 'android.view.View android.view.Window.findViewById(int)' on a null object reference at Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'android.view.View android.view.Window.findViewById(int)' on a null object reference at android.app.Activity.findViewById(Activity.java:2107) at com.barayuda.mapsmeasure.Map.<init>(Map.java:95)

and pointer refers to MapScaleView scaleView = (MapScaleView) findViewById(R.id.scaleView);

I have put this code to my layout:
<com.github.pengrad.mapscaleview.MapScaleView android:id="@+id/scaleView" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="bottom|end" android:layout_margin="4dp"/>

from mapscaleview.