Android NotificationCompact.Builder不'；不接受通道id，仅接受上下文

我正在尝试在我的应用程序中创建通知，但下面的方法不接受带有上下文的频道id。它只接受上下文，所以我没有收到通知。请告诉我如何解决这个问题

NotificationCompat.Builder builder = new NotificationCompat.Builder(ctx, CHANNEL_ID).

这是我的身材。格雷德尔：

apply plugin: 'com.android.application'

android {
    compileSdkVersion 26
    buildToolsVersion "26.0.2"

    defaultConfig {
        applicationId "com.example.murarilal.atry"
        minSdkVersion 14
        targetSdkVersion 26
        versionCode 1
        versionName "1.0"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
    dataBinding{
    enabled true
    }
}

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    testCompile 'junit:junit:4.12'
    configurations.all {
        resolutionStrategy.eachDependency { DependencyResolveDetails details ->
            def requested = details.requested
            if (requested.group == 'com.android.support') {
                if (!requested.name.startsWith("multidex")) {
                    details.useVersion '25.3.1'
                }
            }
        }
    }
    //compile 'com.android.support:appcompat-v7:26.0.0-alpha1'
    compile 'com.android.support:design:26.0.0-alpha1'
    compile 'com.android.support:appcompat-v7:26.0.2'
    compile 'com.android.support:support-v4:26.1.0'
    compile 'com.android.support:support-v4:26.0.0-alpha1'
    compile 'com.android.support:recyclerview-v7:26.0.0-alpha1'
    compile 'com.android.support:cardview-v7:26.0.0-alpha1'
    compile 'de.hdodenhof:circleimageview:2.2.0'
    compile 'com.miguelcatalan:materialsearchview:1.4.0'
}

删除以下内容：

configurations.all {
    resolutionStrategy.eachDependency { DependencyResolveDetails details ->
        def requested = details.requested
        if (requested.group == 'com.android.support') {
            if (!requested.name.startsWith("multidex")) {
                details.useVersion '25.3.1'
            }
        }
    }
}

---

这将迫使您的所有依赖项

25.3.1

。除其他外，它没有您想要的

NotificationCompat.Builder

。

我仍然没有得到。