小编Alb*_*har的帖子

如何在swift 3中声明URL？

这是我尝试的代码:

var messageURL: URL = URL()

要么

var messageURL: Foundation.URL = URL()

这是错误:无法为没有参数的"URL"类型调用初始化程序

这是Apple的一些文档(Swift 3.0),我在实现时遇到了问题:

在删除NS前缀后,其名称与Foundation类型冲突的属性将导致模块限定的类型名称.例如,如果存在var URL:NSURL,则将其重写为var URL:Foundation.URL

我正在尝试在Swift中对一系列字典进行排序.我的结构是这样的:

[
    [
        "DateTime": "8/16/16, 4:00 PM",
        "Owner": "Teacher1",
        "Subject": "AP Euro",
        "Address": "Mr. Hughes\' Room",
        "Type": "Final",
        "Timestamp": "2016081616009498",
        "Location": "On Campus",
        "Duration": "50 min",
        "Members": "ownerKey,1,107434,109431"
    ],
    [
        "DateTime": "7/29/16, 6:35 AM",
        "Owner": "109431",
        "Subject": "Algebra 2 Acc",
        "Address": "Library",
        "Type": "Quiz",
        "Timestamp": "2016072906356642",
        "Location": "On Campus",
        "Duration": "5 min",
        "Members": "ownerKey"
    ]
]

我正在尝试按Timestamp每个字典中的每个" "值对数组进行排序.我怎样才能做到这一点？

我目前的代码(不工作)是:

self.todayArray.sortInPlace {item1,item2 in

    let date1 = Int("\(item1["Timestamp"])")
    let date2 = Int("\(item2["Timestamp"])")

    return date1 > date2
}

我正在尝试通过Firebase在我的Android应用中实施Google登录,并且在我的Gradle同步后,以下消息仍然显示:

错误:任务':app:processDebugGoogleServices'的执行失败.请通过更新google-services插件的版本来修复版本冲突(有关最新版本的信息,请访问https://bintray.com/android/android-tools/com.google.gms.google-services/)或将com.google.android.gms的版本更新为10.2.6.

我该如何解决这个错误？

这是我的Gradle文件:

apply plugin: 'com.android.application'

android {
    compileSdkVersion 25
    buildToolsVersion "25.0.2"
    defaultConfig {
        applicationId "com.sjf.lgcats"
        minSdkVersion 15
        targetSdkVersion 25
        versionCode 2
        versionName "1.0.1"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
        vectorDrawables.useSupportLibrary = true
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
    sourceSets { main { assets.srcDirs = ['src/main/assets', 'src/main/assets/2'] } }
}

dependencies {
    compile fileTree(include: ['*.jar'], dir: 'libs')
    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
        exclude group: 'com.android.support', module: 'support-annotations'
    })

    compile 'com.android.support:appcompat-v7:25.3.1'
    compile 'com.android.support.constraint:constraint-layout:1.0.2'
    compile 'com.android.support:design:25.3.1'
    compile 'com.android.support:support-vector-drawable:25.3.1' …