本地收集程序崩潰日誌-CrashHander

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 com.hengxin.rrh.base.BaseActivity;
import com.hengxin.rxcore.utils.Log;

import java.io.File;
import java.io.FileOutputStream;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.io.Writer;
import java.lang.reflect.Field;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Properties;

/**
 * Created by fflin on 2018/12/19.
 * 用於收集程序中的崩潰日誌，日誌位置  sd/01-crash/crash/crash-xxxx.txt
 */
public class CrashHandler implements Thread.UncaughtExceptionHandler {

    private static final String VERSION_NAME = "versionName";
    private static final String VERSION_CODE = "versionCode";
    private static final String STACK_TRACE = "STACK_TRACE";
    /**
     * 錯誤報告文件的擴展名
     */
    private static final String CRASH_REPORTER_EXTENSION = ".txt";
    private Thread.UncaughtExceptionHandler mDefaultHandler;
    private Context context;
    /**
     * 使用Properties來保存設備的信息和錯誤堆棧信息
     */
    private Properties mDeviceCrashInfo = new Properties();

    public CrashHandler(Context context) {
        // 獲取系統默認的UncaughtException處理器
        this.context = context;
        mDefaultHandler = Thread.getDefaultUncaughtExceptionHandler();
        Thread.setDefaultUncaughtExceptionHandler(this);
    }

    @Override
    public void uncaughtException(Thread thread, Throwable ex) {
        if (!handleException(ex) && mDefaultHandler != null) {
            // 如果用戶沒有處理則讓系統默認的異常處理器來處理
            mDefaultHandler.uncaughtException(thread, ex);
        } else {
            try {
                Thread.sleep(2000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
            // 退出應用  todo 這裏由自己程序控制
            BaseActivity.finishAll();
            Process.killProcess(Process.myPid());
        }
    }

    /**
     * 自定義錯誤處理,收集錯誤信息 發送錯誤報告等操作均在此完成.
     *
     * @param ex
     * @return true:如果處理了該異常信息;否則返回false.
     */
    private boolean handleException(Throwable ex) {
        if (ex == null) {
            return false;
        }

        ex.printStackTrace();

        //收集設備信息
        collectCrashDeviceInfo(context);
        //保存錯誤報告文件
        String crashFileName = saveCrashInfoToFile(ex);
        Log.i("fflin","crashFileName = "+crashFileName);
        return true;
    }

    /**
     * 保存錯誤信息到文件中
     *
     * @param ex
     * @return
     */
    private String saveCrashInfoToFile(Throwable ex) {
        Writer info = new StringWriter();
        PrintWriter printWriter = new PrintWriter(info);
        ex.printStackTrace(printWriter);

        Throwable cause = ex.getCause();
        while (cause != null) {
            cause.printStackTrace(printWriter);
            cause = cause.getCause();
        }

        String result = info.toString();
        printWriter.close();
        mDeviceCrashInfo.put(STACK_TRACE, result);

        try {
            SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd-hh:mm:ss");
            String data = dateFormat.format(new Date());
            String fileName = "crash-" + System.currentTimeMillis() + CRASH_REPORTER_EXTENSION;

            File file = new File(Environment.getExternalStorageDirectory().getAbsolutePath()
                    + File.separator + "01-crash" + File.separator + "crash" + File.separator);

            if (!file.exists()) {
                file.mkdirs();
            }

            FileOutputStream trace = new FileOutputStream(new File(file, fileName));
            mDeviceCrashInfo.store(trace, "");
            trace.flush();
            trace.close();
            return fileName;
        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }

    /**
     * 收集程序崩潰的設備信息
     *
     * @param ctx
     */
    public void collectCrashDeviceInfo(Context ctx) {
        try {
            PackageManager pm = ctx.getPackageManager();
            PackageInfo pi = pm.getPackageInfo(ctx.getPackageName(),
                    PackageManager.GET_ACTIVITIES);
            if (pi != null) {
                mDeviceCrashInfo.put(VERSION_NAME,
                        pi.versionName == null ? "not set" : pi.versionName);
                mDeviceCrashInfo.put(VERSION_CODE, pi.versionCode + "");
            }
        } catch (PackageManager.NameNotFoundException e) {
            e.printStackTrace();
        }
        // 使用反射來收集設備信息.在Build類中包含各種設備信息,

        Field[] fields = Build.class.getDeclaredFields();
        for (Field field : fields) {
            try {
                field.setAccessible(true);
                mDeviceCrashInfo.put(field.getName() + "", field.get(null) + "");
            } catch (Exception e) {
                e.printStackTrace();
            }

        }
    }
}

使用方式很簡單，在application的onCreate()函數中進行初始化即可

new CrashHandler(getApplicationContext());

使用注意事項：

權限問題可能導致寫入SD卡失敗