Proguard 启用 NoSuchMethodException

Question

我没有遇到这个问题，如果我不这样启用 Proguard：

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

Logcat:

java.lang.RuntimeException: java.lang.NoSuchMethodException: com.example.NewUsers$f.<init> [class android.view.View]
    at i.c.a.b.f.b(:147)
    at androidx.recyclerview.widget.RecyclerView$g.a(:7078)
    at androidx.recyclerview.widget.RecyclerView$v.a(:6235)
    at androidx.recyclerview.widget.RecyclerView$v.b(:6118)
    at androidx.recyclerview.widget.RecyclerView$v.d(:6114)
    at androidx.recyclerview.widget.LinearLayoutManager$c.a(:2303)
    at androidx.recyclerview.widget.LinearLayoutManager.a(:1627)
    at androidx.recyclerview.widget.LinearLayoutManager.a(:1587)
    at androidx.recyclerview.widget.LinearLayoutManager.c(:665)
    at androidx.recyclerview.widget.RecyclerView.dispatchLayoutStep2(:4134)
    at androidx.recyclerview.widget.RecyclerView.dispatchLayout(:3851)
    at androidx.recyclerview.widget.RecyclerView.consumePendingUpdateOperations(:1897)
    at androidx.recyclerview.widget.RecyclerView$a.run(:414)
    at android.view.Choreographer$CallbackRecord.run(Choreographer.java:996)
    at android.view.Choreographer.doCallbacks(Choreographer.java:794)
    at android.view.Choreographer.doFrame(Choreographer.java:725)
    at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:981)
    at android.os.Handler.handleCallback(Handler.java:883)
    at android.os.Handler.dispatchMessage(Handler.java:100)
    at android.os.Looper.loop(Looper.java:237)
    at android.app.ActivityThread.main(ActivityThread.java:7807)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1047)
 Caused by: java.lang.NoSuchMethodException: com.example.NewUsers$f.<init> [class android.view.View]
    at java.lang.Class.getConstructor0(Class.java:2332)
    at java.lang.Class.getConstructor(Class.java:1728)
    at i.c.a.b.f.b(:144)
    at androidx.recyclerview.widget.RecyclerView$g.a(:7078) 
    at androidx.recyclerview.widget.RecyclerView$v.a(:6235) 
    at androidx.recyclerview.widget.RecyclerView$v.b(:6118) 
    at androidx.recyclerview.widget.RecyclerView$v.d(:6114) 
    at androidx.recyclerview.widget.LinearLayoutManager$c.a(:2303) 
    at androidx.recyclerview.widget.LinearLayoutManager.a(:1627) 
    at androidx.recyclerview.widget.LinearLayoutManager.a(:1587) 
    at androidx.recyclerview.widget.LinearLayoutManager.c(:665) 
    at androidx.recyclerview.widget.RecyclerView.dispatchLayoutStep2(:4134) 
    at androidx.recyclerview.widget.RecyclerView.dispatchLayout(:3851) 
    at androidx.recyclerview.widget.RecyclerView.consumePendingUpdateOperations(:1897) 
    at androidx.recyclerview.widget.RecyclerView$a.run(:414) 
    at android.view.Choreographer$CallbackRecord.run(Choreographer.java:996) 
    at android.view.Choreographer.doCallbacks(Choreographer.java:794) 
    at android.view.Choreographer.doFrame(Choreographer.java:725) 
    at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:981) 
    at android.os.Handler.handleCallback(Handler.java:883) 
    at android.os.Handler.dispatchMessage(Handler.java:100) 
    at android.os.Looper.loop(Looper.java:237) 
    at android.app.ActivityThread.main(ActivityThread.java:7807) 
    at java.lang.reflect.Method.invoke(Native Method) 
    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493) 
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1047)

当前混淆器：

-keep class com.example.models.** { *; }

Java class:

public class NewUsers extends AppCompatActivity {

    ....

    @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_new_users);

        ....

        mNewUsersList = findViewById(R.id.newUsers);
        mNewUsersList.setHasFixedSize(true);
        mNewUsersList.setLayoutManager(new LinearLayoutManager(this));

        onStart();

    }

    @Override
    protected void onStart() {
        super.onStart();
        FirebaseRecyclerAdapter<Users, UsersViewHolder> adapter = new FirebaseRecyclerAdapter<Users, UsersViewHolder>(
                Users.class,
                R.layout.users_list,
                UsersViewHolder.class,
                mDatabaseReference
        ) {

            @Override
            protected void populateViewHolder(UsersViewHolder usersViewHolder, Users users, int position) {
                usersViewHolder.setName(users.getName());

            }
        };
        mNewUsersList.setAdapter(adapter);
    }

    public static class UsersViewHolder extends RecyclerView.ViewHolder {
        View mView;

        public UsersViewHolder(@NonNull View itemView) {
            super(itemView);
            mView = itemView;
        }

        public void setName(String name) {
            TextView mUserNameView = mView.findViewById(R.id.textViewUserName);
            mUserNameView.setText(name);
        }
    }
}

有没有办法，我只想开启minify和shrink来发布

型号：

public class Users {

    String name;

    public Users() {
    }

    public Users(String name) {
        this.name = name;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

}

Answer 1

你的 class 的包是 com.example 但 proguard 规则是针对 com.example.models 的。修改应该可以解决问题。

Answer 2

查看此日志：

java.lang.RuntimeException: java.lang.NoSuchMethodException: com.example.NewUsers$f.<init> [class android.view.View]

正确的亲卫规则是：

-keep class com.example.** { *; }

此外，请注意，这将排除 com.example 下的所有类，我建议将数据类移动到一个公共目录并混淆整个目录。

Answer 3

解决方案 1：

将您保留的 class 从 com.example.model 更改为 com.example。

更好的解决方案

如果您在使用它的文件中正确导入此 class，并且不使用任何类型的反射，proguard 不应删除它。

尝试将其放置在您可能不需要使用反射或间接方法访问此内容的常见位置 class

Answer 4

java.lang.RuntimeException: java.lang.NoSuchMethodException: com.example.NewUsers$f. [class android.view.View] at i.c.a.b.f.b(:147)

当找不到特定方法时抛出上述异常。这里由于proguard。你应该试试

-keep class com.example.** { *; }
-keepclassmembers class com.example.** { *; }

在整个包上添加 @Keep 可使整个 class 保持原样。将它添加到方法或字段上将使 method/field（及其名称）和 class 名称保持不变。

OP 将是

public class HomeActivity extends AppCompatActivity { 

private TextView f2032b; 
private Button f2033c;

仅供参考

您可以通过在项目的 gradle.properties 文件中包含以下内容来启用这些额外的优化：

android.enableR8.fullMode=true

它可能需要您包含额外的 ProGuard 规则以避免运行时问题。阅读关于 Enable more aggressive optimizations

的官方指南

Proguard 启用 NoSuchMethodException

Proguard enabled NoSuchMethodException

android

proguard

firebase

android-recyclerview

firebaseui