Android轮盘赌项目触发Fatal signal 11 (SIGSEGV)错误求助

Hey there, let's figure out why your roulette app is hitting that nasty SIGSEGV crash! Looking at the error log, the crash happens right at ButterKnife.bind(this) in your onCreate method, so that's our first target to investigate. Here's a step-by-step breakdown of what to check and fix:

1. Double-Check Your Layout IDs Match #

First off, make sure your activity_main.xml file has exactly the three views you're binding with ButterKnife, with no typos in their IDs:

• A Button with id spinBtn
• A TextView with id resultTv
• An ImageView with id wheel
  Even a tiny typo here can throw off ButterKnife's annotation processing and lead to unexpected native crashes like this.

2. Clean & Rebuild Your Project #

Annotation processors like ButterKnife sometimes leave behind stale generated code that doesn't match your current setup. Let's wipe that and start fresh:

1. Go to Build > Clean Project in Android Studio
2. Once that finishes, run Build > Rebuild Project
   This ensures all the binding code ButterKnife generates is up-to-date with your layout and code.

3. Update ButterKnife (Or Switch to ViewBinding) #

ButterKnife 10.2.1 is a bit outdated, and while it supports AndroidX, newer versions fix compatibility kinks with recent Android Studio/JDK 8 environments. Update your dependencies to the latest stable ButterKnife version (10.2.3 as of now):

implementation 'com.jakewharton:butterknife:10.2.3'
annotationProcessor 'com.jakewharton:butterknife-compiler:10.2.3'

If you want a more long-term solution, consider switching to ViewBinding—Android's official replacement for ButterKnife. It's actively maintained, integrates seamlessly with AndroidX, and avoids third-party annotation processor headaches:

• First, enable ViewBinding in your app-level build.gradle:

android {
    ...
    buildFeatures {
        viewBinding true
    }
}

• Then refactor your MainActivity to use ViewBinding (no more ButterKnife!):

import android.os.Bundle;
import androidx.appcompat.app.AppCompatActivity;
import com.example.sixgroup.databinding.ActivityMainBinding;
import android.view.View;
import android.view.animation.Animation;
import android.view.animation.DecelerateInterpolator;
import android.view.animation.RotateAnimation;
import java.util.Random;

public class MainActivity extends AppCompatActivity {
    private static final String[] sectors = { 
        "32 red", "15 black", "19 red", "4 black", "21 red", "2 black", "25 red", "17 black", 
        "34 red", "6 black", "27 red","13 black", "36 red", "11 black", "30 red", "8 black", 
        "23 red", "10 black", "5 red", "24 black", "16 red", "33 black", "1 red", "20 black", 
        "14 red", "31 black", "9 red", "22 black", "18 red", "29 black", "7 red", "28 black", 
        "12 red", "35 black", "3 red", "26 black", "zero" 
    };
    private ActivityMainBinding binding;
    private static final Random RANDOM = new Random();
    private int degree = 0;
    private static final float HALF_SECTOR = 360f / 37f / 2f;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        binding = ActivityMainBinding.inflate(getLayoutInflater());
        setContentView(binding.getRoot());
        
        binding.spinBtn.setOnClickListener(this::spin);
    }

    public void spin(View v) {
        degree = RANDOM.nextInt(360) + 720;
        int degreeOld = degree % 360;
        RotateAnimation rotateAnim = new RotateAnimation(degreeOld, degree, RotateAnimation.RELATIVE_TO_SELF, 0.5f, RotateAnimation.RELATIVE_TO_SELF, 0.5f);
        rotateAnim.setDuration(3600);
        rotateAnim.setFillAfter(true);
        rotateAnim.setInterpolator(new DecelerateInterpolator());
        rotateAnim.setAnimationListener(new Animation.AnimationListener() {
            @Override
            public void onAnimationStart(Animation animation) {
                binding.resultTv.setText("");
            }
            @Override
            public void onAnimationEnd(Animation animation) {
                binding.resultTv.setText(getSector(360 - (degree % 360)));
            }
            @Override
            public void onAnimationRepeat(Animation animation) {}
        });
        binding.wheel.startAnimation(rotateAnim);
    }

    private String getSector(int degrees) {
        int i = 0;
        String text = null;
        do {
            float start = HALF_SECTOR * ((i * 2) + 1);
            float end = HALF_SECTOR * ((i * 2) + 3);
            if (degrees >= start && degrees < end) {
                text = sectors[i];
            }
            i++;
        } while (text == null && i < sectors.length);
        return text;
    }
}

4. Check Your Wheel Image Resource #

If the crash still sticks around, take a look at the image you're using for the wheel ImageView. Corrupted images or unsupported formats can trigger native SIGSEGV crashes when Android tries to load them. Try swapping it out with a simple test image (like a basic PNG) to rule this out.

内容的提问来源于stack exchange，提问作者Br.GH