Android Crash日志抓取及保存

来源：互联网发布：手机淘宝口令怎么设置编辑：程序博客网时间：2024/04/26 03:45
public class CrashHandler implements Thread.UncaughtExceptionHandler {    public static final String TAG = "CrashHandler";    // CrashHandler 实例    private static CrashHandler INSTANCE = new CrashHandler();    // 程序的 Context 对象    private Context mContext;    // app对象    @SuppressWarnings("all")    private MobileApplication app;    // 系统默认的 UncaughtException 处理类    private Thread.UncaughtExceptionHandler mDefaultHandler;    // 用来存储设备信息和异常信息    private Map<String, String> infos = new HashMap<>();    // 用于格式化日期,作为日志文件名的一部分    private DateFormat formatter = new SimpleDateFormat("yyyy-MM-dd-HH-mm-ss", Locale.US);    /** 保证只有一个 CrashHandler 实例 */    private CrashHandler() {    }    /** 获取 CrashHandler 实例 ,单例模式 */    public static CrashHandler getInstance() {        return INSTANCE;    }    /**     * init     * 初始化     */    public void init(Context context, MobileApplication app) {        // 传入app对象，为完美终止app        this.app = app;        mContext = context;        // 获取系统默认的 UncaughtException 处理器        mDefaultHandler = Thread.getDefaultUncaughtExceptionHandler();        // 设置该 CrashHandler 为程序的默认处理器        Thread.setDefaultUncaughtExceptionHandler(this);    }    /**     * 当 UncaughtException 发生时会转入该函数来处理     */    @Override    public void uncaughtException(Thread thread, Throwable ex) {        handleException(ex);        if (mDefaultHandler != null) {            // 继续让系统默认的异常处理器来处理            mDefaultHandler.uncaughtException(thread, ex);            Log.d(TAG, "@@ Let default system exception handler handle uncaught exception...");        }    }    /**     * 自定义错误处理，收集错误信息，发送错误报告等操作均在此完成     *     * @return true：如果处理了该异常信息；否则返回 false     */    private boolean handleException(Throwable ex) {        if (ex == null) {            return false;        }        // 收集设备参数信息        collectDeviceInfo(mContext);        // 保存日志文件        saveCrashInfo2File(ex);        return true;    }    /**     * 收集设备参数信息     *     */    public void collectDeviceInfo(Context ctx) {        try {            PackageManager pm = ctx.getPackageManager();            PackageInfo pi = pm.getPackageInfo(ctx.getPackageName(),                    PackageManager.GET_ACTIVITIES);            if (pi != null) {                String versionName = pi.versionName == null ? "null"                        : pi.versionName;                String versionCode = pi.versionCode + "";                infos.put("versionName", versionName);                infos.put("versionCode", versionCode);            }        } catch (PackageManager.NameNotFoundException e) {            Log.e(TAG, "an error occured when collect package info", e);        }        Field[] fields = Build.class.getDeclaredFields();        for (Field field : fields) {            try {                field.setAccessible(true);                infos.put(field.getName(), field.get(null).toString());            } catch (Exception e) {                Log.e(TAG, "an error occured when collect crash info", e);            }        }    }    /**     * 保存错误信息到文件中 *     *     * @return 返回文件名称,便于将文件传送到服务器     */    @SuppressWarnings("all")    private String saveCrashInfo2File(Throwable ex) {        StringBuffer sb = new StringBuffer();        for (Map.Entry<String, String> entry : infos.entrySet()) {            String key = entry.getKey();            String value = entry.getValue();            sb.append(key + "=" + value + "\n");        }        Writer writer = new StringWriter();        PrintWriter printWriter = new PrintWriter(writer);        ex.printStackTrace(printWriter);        Throwable cause = ex.getCause();        while (cause != null) {            cause.printStackTrace(printWriter);            cause = cause.getCause();        }        printWriter.close();        String result = writer.toString();        sb.append(result);        try {            long timestamp = System.currentTimeMillis();            String time = formatter.format(new Date());            String fileName = "error-" + time + "-" + timestamp + ".log";            if (Environment.getExternalStorageState().equals(                    Environment.MEDIA_MOUNTED)) {                String path = Environment.getExternalStorageDirectory()                        .getAbsolutePath() + "/xxx/crashs/";//                Toast.makeText(mContext, path, Toast.LENGTH_LONG).show();                File dir = new File(path);                boolean dirOk = true;                if (!dir.exists()) {                    dirOk = dir.mkdirs();                }                if (dirOk) {                    FileOutputStream fos = new FileOutputStream(path + fileName);                    fos.write(sb.toString().getBytes());                    fos.flush();                    fos.close();                }            }            return fileName;        } catch (Exception e) {            Log.e(TAG, "an error occured while writing file...", e);        }        return null;    }}
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