Proguard enabled NoSuchMethodException

user_2289078 0
Viewed 1114

I'm not getting this issue, If I do not enable Proguard like this:

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)

Current proguard:

-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);
        }
    }
}

Is there any possibilities, I just want to enable minify and shrink for release

Model:

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;
    }

}
firebaseui firebase android-recyclerview proguard android
4 Answers

Check this log:

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

The correct pro guard rule will be:

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

Also, note that this will exclude all classes under com.example, I suggest moving the data classes to a common directory and obfuscate that complete directory.

user_34391330

The package of your class is com.example but the proguard rule is for com.example.models. Revising that should fix the problem.

user_3720760

Solution 1:

Change your kept class from com.example.model to com.example.

A better solution

If you are importing this class properly in file where you are using it, and not using any kind of reflection, proguard should not remove this.

Try placing it in a common position where you may not need to use reflections or indirect method to access this class

user_96401770

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

Above exceptions thrown when a particular method cannot be found. Here due to proguard. You should try with

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

Adding @Keep on a entire package keeps the entire class as-is. Adding it on a method or field will keep the method/field (and it's name) as well as the class name intact.

OP will be

public class HomeActivity extends AppCompatActivity { 

private TextView f2032b; 
private Button f2033c;

FYI

You can enable these additional optimizations by including the following in your project’s gradle.properties file:

android.enableR8.fullMode=true

It may require you to include additional ProGuard rules to avoid runtime issues. Read official guideline about Enable more aggressive optimizations

user_33951980
Related