使用Proguard删除Google Play服务库中未使用的类

Question

我正试图摆脱Google Play Services库中未使用的类.我用单个空活动创建了全新的android项目.该项目不使用Google Play Services库中的任何内容.所以我希望,当我构建版本(包括在我的配置中运行proguard)时,我会看到二进制大小与构建有/无play-services依赖关系没有区别.但实际上,我看到apk大小差异大约为700 KB .

我找到了相对复杂的解决方案,使用gradle脚本,其中涉及重新打包play-services.jar文件.此外,此解决方案需要明确指定不会使用的每个包.但我不明白为什么不在proguard我的案件中做这项工作？

的build.gradle:

apply plugin: 'com.android.application'

android {
    compileSdkVersion 21
    buildToolsVersion "21.1.1"

    defaultConfig {
        minSdkVersion 10
        targetSdkVersion 21
    }

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

dependencies {
    // !!! when I comment the line below, release APK is 700 KB smaller !!! //
    compile 'com.google.android.gms:play-services:6.5.87'
}

proguard-rules.pro:

-assumenosideeffects class android.util.Log {
    public static *** d(...);
}

AndroidManifest.xml中:

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
          package="com.test.noplayservices">
    <application android:allowBackup="true"
                 android:label="@string/app_name"
                 android:icon="@drawable/ic_launcher"
                 android:theme="@style/AppTheme">
        <activity android:name=".ui.activities.MainActivity" android:icon="@drawable/ic_launcher">
            <intent-filter>
                <category android:name="android.intent.category.LAUNCHER"/>
            </intent-filter>
        </activity>
    </application>
</manifest>

MainActivity.java:

package com.test.noplayservices.ui.activities;

import android.app.Activity;
import android.os.Bundle;
import com.test.noplayservices.R;

public class MainActivity extends Activity {
    @Override
    public void onCreate(Bundle savedInstance) {
        super.onCreate(savedInstance);
        setContentView(R.layout.main_activity);
    }
}

Answer 1

从Google Play Services 6.5及更高版本中,您可以选择要使用的API,并仅导入这些API.也许这会帮助你减少一点点的APK大小.这是一个清单:

Google+                         com.google.android.gms:play-services-plus:6.5.+
Google Account Login            com.google.android.gms:play-services-identity:6.5.+
Google Activity Recognition     com.google.android.gms:play-services-location:6.5.+
Google App Indexing             com.google.android.gms:play-services-appindexing:6.5.+
Google Cast                     com.google.android.gms:play-services-cast:6.5.+
Google Drive                    com.google.android.gms:play-services-drive:6.5.+
Google Fit                      com.google.android.gms:play-services-fitness:6.5.+
Google Maps                     com.google.android.gms:play-services-maps:6.5.+
Google Mobile Ads               com.google.android.gms:play-services-ads:6.5.+
Google Panorama Viewer          com.google.android.gms:play-services-panorama:6.5.+
Google Play Game services       com.google.android.gms:play-services-games:6.5.+
Google Wallet                   com.google.android.gms:play-services-wallet:6.5.+
Android Wear                    com.google.android.gms:play-services-wearable:6.5.+
Google Actions
Google Analytics
Google Cloud Messaging          com.google.android.gms:play-services-base:6.5.+

你可以在这里看到更多相关信息.