android - Maps v3.0.0 Beta 的 Proguard 规则

Question

我一直在尝试实现谷歌鼓励人们开始使用的新 map API，但我无法克服我遇到的错误(适用于 map v2)。

我尝试了 google maps 示例代码中的 proguard 规则，但他们只以某种方式保留了 v2 规则。它们甚至应该适用于 v3 吗？

map 类非常基础:

package com.example.test2.Fragments;

import android.content.Context;
import android.net.Uri;
import android.os.Bundle;

import androidx.annotation.NonNull;
import androidx.fragment.app.Fragment;

import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

import com.example.test2.R;
import com.google.android.libraries.maps.CameraUpdateFactory;
import com.google.android.libraries.maps.GoogleMap;
import com.google.android.libraries.maps.MapView;
import com.google.android.libraries.maps.OnMapReadyCallback;
import com.google.android.libraries.maps.model.LatLng;
import com.google.android.libraries.maps.model.MarkerOptions;

public class MainMapFragment extends Fragment implements OnMapReadyCallback {

    private OnFragmentInteractionListener mListener;

    private MapView mapView;
    private GoogleMap gMap;
    private static final String MAPVIEW_BUNDLE_KEY = "MapViewBundleKey";
    private final int zoomValue = 13;

    public MainMapFragment() {
    }

    public static MainMapFragment newInstance() {
        return new MainMapFragment();
    }

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.fragment_main_map, container, false);

        Bundle mapViewBundle = null;
        if (savedInstanceState != null) {
            mapViewBundle = savedInstanceState.getBundle(MAPVIEW_BUNDLE_KEY);
        }

        mapView = view.findViewById(R.id.map_view);
        mapView.onCreate(mapViewBundle);
        mapView.getMapAsync(this);

        return view;
    }

    @Override
    public void onAttach(@NonNull Context context) {
        super.onAttach(context);
    }

    @Override
    public void onDetach() {
        super.onDetach();
        mListener = null;
    }

    @Override
    public void onResume() {
        super.onResume();
        if (mapView != null) {
            mapView.onResume();
        }
    }

    @Override
    public void onMapReady(GoogleMap googleMap) {
        gMap = googleMap;
    }

    @Override
    public void onSaveInstanceState(@NonNull Bundle outState) {
        super.onSaveInstanceState(outState);

        Bundle mapViewBundle = outState.getBundle(MAPVIEW_BUNDLE_KEY);
        if (mapViewBundle == null) {
            mapViewBundle = new Bundle();
            outState.putBundle(MAPVIEW_BUNDLE_KEY, mapViewBundle);
        }

        if (mapView != null) {
            mapView.onSaveInstanceState(mapViewBundle);
        }
    }

    @Override
    public void onStart() {
        super.onStart();
        if (mapView != null) {
            mapView.onStart();
        }
    }

    @Override
    public void onStop() {
        super.onStop();
        if (mapView != null) {
            mapView.onStop();
        }
    }

    @Override
    public void onPause() {
        super.onPause();
        if (mapView != null) {
            mapView.onPause();
        }
    }

    @Override
    public void onDestroy() {
        super.onDestroy();
        if (mapView != null) {
            mapView.onDestroy();
        }
    }

    @Override
    public void onLowMemory() {
        super.onLowMemory();
        if (mapView != null) {
            mapView.onLowMemory();
        }
    }

    public interface OnFragmentInteractionListener {
        // TODO: Update argument type and name
        void onFragmentInteraction(Uri uri);
    }
}

我的 Proguard 规则文件:

# Jackson
-keep @com.fasterxml.jackson.annotation.JsonIgnoreProperties class * { *; }
-keep class com.fasterxsml.** { *; }
-keep class org.codehaus.** { *; }
-keepnames class com.fasterxml.jackson.** { *; }
-keepclassmembers public final enum com.fasterxml.jackson.annotation.JsonAutoDetect$Visibility { 
    public static final com.fasterxml.jackson.annotation.JsonAutoDetect$Visibility *;
}

## General
-keepattributes SourceFile,LineNumberTable,*Annotation*,EnclosingMethod,Signature,Exceptions,InnerClasses

-optimizations !code/simplification/variable

-keep public class * extends android.app.Activity
-keep public class * extends android.app.Fragment
-keep public class * extends android.support.v4.app.Fragment

# The Maps API uses custom Parcelables.
# Use this rule (which is slightly broader than the standard recommended one)
# to avoid obfuscating them.
-keepclassmembers class * implements android.os.Parcelable {
    static *** CREATOR;
}

# The Maps API uses serialization.
-keepclassmembers class * implements java.io.Serializable {
    static final long serialVersionUID;
    static final java.io.ObjectStreamField[] serialPersistentFields;
    private void writeObject(java.io.ObjectOutputStream);
    private void readObject(java.io.ObjectInputStream);
    java.lang.Object writeReplace();
    java.lang.Object readResolve();
}

尝试在我的手机 (Xiaomi Redmi 4) 上打开 map 时遇到的错误:

E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.example.test2, PID: 26504
    java.lang.ExceptionInInitializerError
        at com.google.android.libraries.maps.ex.zzd.<clinit>(GmmSettings.java:111)
        at com.google.android.libraries.maps.dk.zza.zzA(DaggerMapCoreEnvironmentComponent.java:983)
        at com.google.android.libraries.maps.gu.zzat.zza(RendererFactoryImpl.java:63)
        at com.google.android.libraries.maps.it.zzav.zza(GoogleMapImpl.java:59)
        at com.google.android.libraries.maps.it.zzcp.zza(MapViewDelegateImpl.java:3)
        at com.google.android.libraries.maps.it.zzcq.zza(MapViewDelegateImpl.java:11)
        at com.google.android.libraries.maps.MapView$zza.onCreate(MapView.java:6)
        at com.google.android.gms.dynamic.zab.zaa(com.google.android.gms:play-services-base@@17.1.0:3)
        at com.google.android.gms.dynamic.zaa.onDelegateCreated(com.google.android.gms:play-services-base@@17.1.0:4)
        at com.google.android.libraries.maps.MapView$zzb.createDelegate(MapView.java:16)
        at com.google.android.gms.dynamic.DeferredLifecycleHelper.zaa(com.google.android.gms:play-services-base@@17.1.0:18)
        at com.google.android.gms.dynamic.DeferredLifecycleHelper.onCreate(com.google.android.gms:play-services-base@@17.1.0:22)
        at com.google.android.libraries.maps.MapView.onCreate(MapView.java:26)
        at d.b.a.f.t.onCreateView(MainMapFragment.java:58)
        at androidx.fragment.app.Fragment.performCreateView(Fragment.java:2595)
        at b.j.a.i.a(FragmentManagerImpl.java:881)
        at b.j.a.i.p(FragmentManagerImpl.java:1238)
        at b.j.a.i.a(FragmentManagerImpl.java:1303)
        at b.j.a.a.g(BackStackRecord.java:439)
        at b.j.a.i.b(FragmentManagerImpl.java:2076)
        at b.j.a.i.a(FragmentManagerImpl.java:1866)
        at b.j.a.i.c(FragmentManagerImpl.java:1821)
        at b.j.a.i.y(FragmentManagerImpl.java:1727)
        at b.j.a.i$b.run(FragmentManagerImpl.java:150)
        at android.os.Handler.handleCallback(Handler.java:742)
        at android.os.Handler.dispatchMessage(Handler.java:95)
        at android.os.Looper.loop(Looper.java:157)
        at android.app.ActivityThread.main(ActivityThread.java:5601)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:774)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:652)
     Caused by: java.lang.NullPointerException: throw with null exception
        at com.google.android.libraries.maps.ex.zzi.<init>(GmmSettings.java:2)
        at com.google.android.libraries.maps.ex.zzh.<init>(GmmSettings.java:1)
        at com.google.android.libraries.maps.ex.zzi.<clinit>(GmmSettings.java:16)

当我关闭 minifyEnabled 和 shrinkResources 时，它工作得很好。

有没有人偶然发现这个？我试着用谷歌搜索这个错误，但没有在任何地方找到任何东西。

感谢任何回复!

Answer 1

截至 2020 年 1 月 21 日准确回答；验证在 latest SDK version 中仍然需要修复申请前。

---

我在当前发布的 3.0.0-beta AAR 中遇到了同样的问题。我报告了这个问题here .我建议的解决方法是将以下内容添加到应用程序的 ProGuard 配置中:

# Fix maps 3.0.0-beta crash:
-keep,allowoptimization class com.google.android.libraries.maps.** { *; }

# Fix maps 3.0.0-beta marker taps ignored:
-keep,allowoptimization class com.google.android.apps.gmm.renderer.** { *; }

希望 Google 团队将这些(或更完善的)规则添加到 3.0.0-beta AAR 中嵌入的 ProGuard 配置中，届时这些额外的规则将变得不必要。不幸的是，由于 3.0.0-beta SDK 没有明显的版本控制，因此可能只有通过加注星标并关注此答案开头链接的问题才能知道何时发生。