• Error: Cannot fit requested classes in a single dex file (# methods: 149346 > 65536)


    引用第三方库的jar文件,都有可能会触发这个错误。解决方案如下:

    参考《[Android]Cannot fit requested classes in a single dex file. Try supplying a main-dex list.

    一、在app的build.gradle中添加依赖,在defaultConfig中添加以下代码【注意:必须是app这个module,不能是其他的module

    apply plugin: 'com.android.application'
    
    android {
        compileSdkVersion 28
        defaultConfig {
            applicationId "com.why.project.poidemo"
            minSdkVersion 16
            targetSdkVersion 28
            versionCode 1
            versionName "1.0"
            testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    
            //
            multiDexEnabled true
        }
        buildTypes {
            release {
                minifyEnabled false
                proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
            }
        }
    
        //poi
        compileOptions {
            sourceCompatibility JavaVersion.VERSION_1_8
            targetCompatibility JavaVersion.VERSION_1_8
        }
    }
    
    dependencies {
        implementation fileTree(include: ['*.jar'], dir: 'libs')
        implementation 'com.android.support:appcompat-v7:28.0.0'
        implementation 'com.android.support.constraint:constraint-layout:1.1.3'
        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.android.support:multidex:1.0.3'
    }

    二、如果你自定义了Application子类,需要在这个子类中重写一个方法

    @Override
    public void onCreate() {
        super.onCreate();
        // 主要是添加下面这句代码
        MultiDex.install(this);
    }
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  • 原文地址:https://www.cnblogs.com/whycxb/p/9792192.html
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