android 全局异常捕获

任何应用都要可能出现崩溃的情况，所以崩溃后应该 退出应用

public class SysApplication extends Application {    private LinkedList<Activity> mList = new LinkedList();    private static SysApplication instance;    private SysApplication() {    }    public synchronized static SysApplication getInstance() {        if (null == instance) {            instance = new SysApplication();        }        return instance;    }    // add Activity    public void addActivity(Activity activity) {        mList.add(activity);    }    public void exit() {        try {            for (Activity activity : mList) {                if (activity != null)                    activity.finish();                    stopNotify();                    PrefUtils.putInt(ContextUtil.getInstance(), "login",0);            }        } catch (Exception e) {            e.printStackTrace();        } finally {            System.exit(0);        }    }    public void onLowMemory() {        super.onLowMemory();        System.gc();    }    private void stopNotify() {        NotificationManager notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);        notificationManager.cancel(1);        notificationManager.cancelAll();    }}

public class CrashHandler implements Thread.UncaughtExceptionHandler {    public static final String TAG = "CrashHandler";    //系统默认的UncaughtException处理类    private Thread.UncaughtExceptionHandler mDefaultHandler;    //CrashHandler实例    private static CrashHandler INSTANCE = new CrashHandler();    //程序的Context对象    private Context mContext;    //用来存储设备信息和异常信息    private Map<String, String> infos = new HashMap<String, String>();    //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");    /** 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;    }    /**     * 初始化     *     * @param context     */    public void init(Context context) {        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) {        if (!handleException(ex) && mDefaultHandler != null) {            //如果用户没有处理则让系统默认的异常处理器来处理            mDefaultHandler.uncaughtException(thread, ex);        } else {            try {                Thread.sleep(1000);            } catch (InterruptedException e) {                Log.e(TAG, "error : ", e);            }            //退出程序            SysApplication.getInstance().exit();            android.os.Process.killProcess(android.os.Process.myPid());            System.exit(1);        }    }    /**     * 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.     *     * @param ex     * @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;        }        //使用Toast来显示异常信息        new Thread() {            @Override            public void run() {                Looper.prepare();                ViewUtil.showToast("很抱歉，程序崩溃，即将退出，错误日志上传中...");                Looper.loop();            }        }.start();        //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     * @param ctx     */    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());                Log.d(TAG, field.getName() + " : " + field.get(null));            } catch (Exception e) {                Log.e(TAG, "an error occured when collect crash info", e);            }        }    }    /**     * 保存错误信息到文件中     *     * @param ex     * @return 返回文件名称,便于将文件传送到服务器     */    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 = "crash-" + time + "-" + timestamp + ".log";            if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {                String path = "/sdcard/crash/";                File dir = new File(path);                if (!dir.exists()) {                    dir.mkdirs();                }                FileOutputStream fos = new FileOutputStream(path + fileName);                fos.write(sb.toString().getBytes());                fos.close();            }            return fileName;        } catch (Exception e) {            Log.e(TAG, "an error occured while writing file...", e);        }        return null;    }}

将所有activity添加进来

        SysApplication.getInstance().addActivity(this);