How to reduce Apk (.apk) size in android studio

问题

When i run my app size of apk will 21 MB. even i enabled proguard. i use android studio to run project. in project files src folder has 8.62 MB size and lib folder size is 400 KB size. so how i reduce size of .apk file. Actually .apk file is 8 mb before some days with same images but after paypal integration my app size will increases to 21 mb. size of build folder is 127 MB.

build.gradle(module app) is:

apply plugin: 'com.android.application'

android {
    compileSdkVersion 23
    buildToolsVersion "23.0.2"
    useLibrary 'org.apache.http.legacy'
    defaultConfig {
        applicationId "com.oi.food"
        minSdkVersion 16
        targetSdkVersion 23
        versionCode 1
        versionName "1.0"
    }
    buildTypes {
        release {
            minifyEnabled true
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }

    packagingOptions{
        exclude 'AndroidManifest.xml'
    } }

dependencies {
    compile fileTree(include: ['*.jar'], dir: 'libs')
    testCompile 'junit:junit:4.12'
    compile 'com.android.support:appcompat-v7:23.1.1'
    compile files('libs/httpmime-4.1.1.jar')
    compile files('libs/apache-mime4j-0.6.jar')
    compile 'com.squareup.picasso:picasso:2.3.2'
    compile 'com.android.support:design:23.1.1'
    compile 'com.android.support:recyclerview-v7:23.1.1'
    compile 'com.paypal.sdk:paypal-android-sdk:2.14.1' }

回答1:

I solve this issue by adding this code in module app build.gradle file.

 android {
        packagingOptions{
            exclude 'AndroidManifest.xml'
            exclude 'lib/arm64-v8a/libcardioDecider.so'
            exclude 'lib/arm64-v8a/libcardioRecognizer.so'
            exclude 'lib/arm64-v8a/libcardioRecognizer_tegra2.so'
            exclude 'lib/arm64-v8a/libopencv_core.so'
            exclude 'lib/arm64-v8a/libopencv_imgproc.so'
            exclude 'lib/armeabi/libcardioDecider.so'
            exclude 'lib/armeabi-v7a/libcardioDecider.so'
            exclude 'lib/armeabi-v7a/libcardioRecognizer.so'
            exclude 'lib/armeabi-v7a/libcardioRecognizer_tegra2.so'
            exclude 'lib/armeabi-v7a/libopencv_core.so'
            exclude 'lib/armeabi-v7a/libopencv_imgproc.so'
            exclude 'lib/mips/libcardioDecider.so'
            exclude 'lib/x86/libcardioDecider.so'
            exclude 'lib/x86/libcardioRecognizer.so'
            exclude 'lib/x86/libcardioRecognizer_tegra2.so'
            exclude 'lib/x86/libopencv_core.so'
            exclude 'lib/x86/libopencv_imgproc.so'
            exclude 'lib/x86_64/libcardioDecider.so'
            exclude 'lib/x86_64/libcardioRecognizer.so'
            exclude 'lib/x86_64/libcardioRecognizer_tegra2.so'
            exclude 'lib/x86_64/libopencv_core.so'
            exclude 'lib/x86_64/libopencv_imgproc.so'
        }
    }

           dependencies {
            compile fileTree(include: ['*.jar'], dir: 'libs')
            compile 'com.paypal.sdk:paypal-android-sdk:2.14.1'
        }

回答2:

try

 buildTypes {
    release {
        minifyEnabled true
        shrinkResources true
        proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
    }
}

shrinkResources true will not include the images from resources which your using in the final apk

hope this helps

回答3:

You can easily reduce the size of the app by reducing the image size. Please use https://tinypng.com/ to reduce your image size. This will ensure your app size is also reduced. The image quality will remain the same.

Also in case of libraries, please be sure to include ONLY those components that you really need. Also remove any unwanted and unused imports.

回答4:

Before click Finish when open new project wizard, uncheck backward compatibility(appcompat). This is can reduce from 1.5 MB to 180 KB.

回答5:

These 4 things reduce your apk size almost 50-60%

Replace proguard-android.txt with proguard-android-optimize.txt
Make minifyEnabled true
Add shrinkResources true

Add resConfigs

buildTypes {
    release {
        minifyEnabled true
        shrinkResources true
        resConfigs "en"
        proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
    }
}

Details:

proguard-android-optimize.txt is the more aggressive progurard configuration than proguard-android.txt.
shrinkResources attribute will remove all the resources, those are not used anywhere in the project.
resConfigs attribute will remove all the other localized resources while building the application. Here, it strips other than english resources.

回答6:

I think you should build your APK as (APK bundle), Google promotes that for APK size issues. I've used the option for my projects and it did actually decrease the size of my APK.

回答7:

The Best Way to Reduce The Size of Your APK File is reduce the use of the libaries that are used in build.gradle file . these libaries create a lot of redandancy and in turn increase the size of the project .. enter image description here

来源：https://stackoverflow.com/questions/38887998/paypal-is-not-working-after-removing-io-card

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android

apk