我想添加融合的位置服务,但它告诉我一些错误。 帮助我。

apply plugin: 'com.android.application'

android {
    compileSdkVersion 26
    buildToolsVersion "27.0.1"
    defaultConfig {
        applicationId "com.example.adil.bloodbankapplication"
        minSdkVersion 15
        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(include: ['*.jar'], dir: 'libs')
    compile 'com.android.support:appcompat-v7:26.1.0'
    compile 'com.android.support.constraint:constraint-layout:1.0.2'
    compile 'com.google.firebase:firebase-auth:11.8.0'
    compile 'com.google.firebase:firebase-database:11.8.0'
    compile 'com.android.support:support-v4:26.1.0'
    compile 'junit:junit:4.12'
    compile 'com.android.support:design:26.1.0'
    compile 'com.github.joielechong:countrycodepicker:2.1.5'
    compile 'com.jaredrummler:material-spinner:1.2.4'
    compile 'hanks.xyz:htextview-library:0.1.5'
    compile 'com.firebaseui:firebase-ui-database:1.2.0'
    compile 'com.google.android.gms:play-services:11.8.0'
}


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

当前回答

只需要做以下几点:

build.gradle

(module:app)


android {
            ....
      defaultConfig {
              multiDexEnabled true // enable mun
      }
}

并在构建中添加以下依赖项。Gradle应用程序级别文件

dependencies {
    implementation 'com.android.support:multidex:1.0.3'
} 

其他回答

在构建应用程序

apply plugin: 'com.android.application'
android {
compileSdkVersion 28
defaultConfig {
    applicationId "com.proyecto.marketdillo"
    minSdkVersion 14
    targetSdkVersion 28
    versionCode 1
    versionName "1.0"
    testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    multiDexEnabled true
}
buildTypes {
    release {
        minifyEnabled false
        proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
    }
  }
}
dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation 'com.android.support:appcompat-v7:28.0.0-rc02'
implementation 'com.google.firebase:firebase-core:16.0.7'
implementation 'com.android.support.constraint:constraint-layout:1.1.3'
implementation 'com.android.support:support-v4:28.0.0-rc02'
implementation 'com.android.support:design:28.0.0-rc02'
implementation 'com.google.firebase:firebase-auth:16.1.0'
implementation 'com.squareup.picasso:picasso:2.5.2'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'com.android.support.test:runner:1.0.2'
androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
implementation 'com.google.firebase:firebase-firestore:17.1.5'
implementation 'com.android.support:multidex:1.0.3'
}
apply plugin: 'com.google.gms.google-services'
multiDexEnabled true

请尝试将此添加到您的应用程序defaultConfig{}。这帮我解决了问题

dex文件是什么:Android应用程序(APK)文件包含Dalvik可执行(dex)文件形式的可执行字节码文件,其中包含用于运行应用程序的编译代码。

出现这种异常的原因:DEX规范限制了在单个DEX文件中可以引用的方法总数为65,536 (64K引用限制)——包括Android框架方法、库方法和你自己代码中的方法。

步骤1。添加如下依赖项

对于非androidx用户,

dependencies {
  implementation 'com.android.support:multidex:1.0.3'
}
defaultConfig {
    minSdkVersion 16
    targetSdkVersion 28
    multiDexEnabled true  //ADD THIS LINE
}

对于android用户,

dependencies {
  implementation 'androidx.multidex:multidex:2.0.1'
}
    defaultConfig {
        minSdkVersion 16
        targetSdkVersion 28
        multiDexEnabled true  //ADD THIS LINE
    }

步骤2:

在添加这些同步项目之后,在运行项目之前,请确保在运行之前构建一个项目。否则,您将得到一个异常。

他们给你的答案都不详尽。 问题出在Multidex上。 你必须在应用程序gradle中添加这个库:

implementation 'com.android.support:multidex:1.0.3'

之后,在应用gradle的defaultConfig中添加:

multiDexEnabled true

您的应用程序必须是Multidex类型.. 你必须把它写在清单上:

android:name=".MyApplication"

“MyApplication”必须是Multidex类,或者必须扩展它。

修改应用程序或模块的build.gradle

android {
    defaultConfig {
        ...
        minSdkVersion 21 <----- *here
        targetSdkVersion 26
        multiDexEnabled true <------ *here
    }
    ...
}

根据官方文件

Multidex support for Android 5.0 and higher Android 5.0 (API level 21) and higher uses a runtime called ART which natively supports loading multiple DEX files from APK files. ART performs pre-compilation at app install time which scans for classesN.dex files and compiles them into a single .oat file for execution by the Android device. Therefore, if your minSdkVersion is 21 or higher, you do not need the multidex support library. For more information on the Android 5.0 runtime, read ART and Dalvik.

https://developer.android.com/studio/build/multidex