java CrashHandler

Posted 2021-05-08

import android.content.Context;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.os.Build;
import android.os.Environment;
import android.os.Process;
import android.util.Log;

import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.text.SimpleDateFormat;
import java.util.Date;

/**
 * Created by Mark Xu on 17/6/5.
 * Site: http://xuchongyang.com
 * CrashHandler
 */

public class CrashHandler implements Thread.UncaughtExceptionHandler {
    private static final String TAG = "CrashHandler";
    private static final boolean DEBUG = true;
    private Context mContext;

    private String mPath;
    private String mFileName = "/crash";
//    private static final String mFileNameSuffix = ".trace";
    private String mFileNameSuffix = ".log";

    private static CrashHandler sInstance = new CrashHandler();
    private Thread.UncaughtExceptionHandler mDefaultCrashHandler;

    private CrashHandler() {
    }

    public static CrashHandler getInstance() {
        return sInstance;
    }

    public void init(Context context) {
        mDefaultCrashHandler = Thread.getDefaultUncaughtExceptionHandler();
        Thread.setDefaultUncaughtExceptionHandler(this);
        mContext = context.getApplicationContext();
        mPath = mContext.getExternalFilesDir("crash").getPath();
    }

    @Override
    public void uncaughtException(Thread t, Throwable ex) {
        try {
            dumpExceptionToSDCard(ex);
            uploadExceptionToServer();
        } catch (IOException ioe) {
            ioe.printStackTrace();
        }

        ex.printStackTrace();
        if (mDefaultCrashHandler != null) {
            mDefaultCrashHandler.uncaughtException(t, ex);
        } else {
            Process.killProcess(Process.myPid());
        }
    }

    private void dumpExceptionToSDCard(Throwable ex) throws IOException {
        if (!Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {
            if (DEBUG) {
                Log.w(TAG, " sdcard unmounted, skip dump exception");
                return;
            }
        }

        File dir = new File(mPath);
        if (!dir.exists()) {
            dir.mkdirs();
        }
        long current = System.currentTimeMillis();
        String time = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(new Date(current));
        File file = new File(mPath + mFileName + time + mFileNameSuffix);

        try {
            PrintWriter pw = new PrintWriter(new BufferedWriter(new FileWriter(file)));
            pw.println(time);
            dumpPhoneInfo(pw);
            pw.println();
            ex.printStackTrace(pw);
            pw.close();
        } catch (Exception e) {
            Log.e(TAG, " dump crash info failed");
        }
    }

    private void dumpPhoneInfo(PrintWriter pw) throws PackageManager.NameNotFoundException {
        PackageManager pm = mContext.getPackageManager();
        PackageInfo pi = pm.getPackageInfo(mContext.getPackageName(), PackageManager.GET_ACTIVITIES);
        pw.print("App version: ");
        pw.print(pi.versionName);
        pw.print('_');
        pw.println(pi.versionCode);

        // Android 版本号
        pw.print("OS Version: ");
        pw.print(Build.VERSION.RELEASE);
        pw.print("_");
        pw.println(Build.VERSION.SDK_INT);

        // 手机制造商
        pw.print("Vendor: ");
        pw.println(Build.MANUFACTURER);

        // 手机型号
        pw.print("Model: ");
        pw.println(Build.MODEL);

        // CPU 架构
        pw.print("CPU ABI: ");
        pw.println(Build.CPU_ABI);
    }

    private void uploadExceptionToServer() {

    }
}