一个可以捕获程序崩溃个 然后可以保存本地的方法

一个可以捕获程序崩溃个 然后可以保存本地的方法

public class MyApplication extends Application {    private String DIR = "";    private String NAME = "";    /**     * 为了完全退出程序调用方法 MyApplication.getInstance().addActivity(this);     * MyApplication.getInstance().exit();     */    private static MyApplication instance_app;    // 用于存儲 Activity 的集合，方便統一关闭    private List<Activity> activityList = new LinkedList<Activity>();    public MyApplication() {}    @Override    public void onCreate() {        super.onCreate();        this.DIR = Environment.getExternalStorageDirectory()                .getAbsolutePath() + "/yuedaosurvey/log/";        this.NAME = "client_"+getCurrentDateString() + ".txt";        Thread.setDefaultUncaughtExceptionHandler(uncaughtExceptionHandler);    }    /**     * 捕获错误信息的handler     */    private Thread.UncaughtExceptionHandler uncaughtExceptionHandler = new Thread.UncaughtExceptionHandler() {        @Override        public void uncaughtException(Thread thread, Throwable ex) {            ex.printStackTrace();            String info = null;            ByteArrayOutputStream baos = null;            PrintStream printStream = null;            try {                baos = new ByteArrayOutputStream();                printStream = new PrintStream(baos);                ex.printStackTrace(printStream);                byte[] data = baos.toByteArray();                info = new String(data);                data = null;            } catch (Exception e) {                e.printStackTrace();            } finally {                try {                    if (printStream != null) {                        printStream.close();                    }                    if (baos != null) {                        baos.close();                    }                } catch (Exception e) {                    e.printStackTrace();                }            }            writeErrorLog(info);            // 捕获异常结束程序            System.out.println("异常关闭Socket！");            PushApplication.getInstance().logout();            YDApplication.getInstance().exit();        }    };    /**     * 向文件中写入错误信息     *     * @param info     */    protected void writeErrorLog(String info) {        File dir = new File(DIR);        if (!dir.exists()) {            dir.mkdirs();        }        File file = new File(dir, NAME);        try {            FileOutputStream fileOutputStream = new FileOutputStream(file, true);            fileOutputStream.write(info.getBytes());            fileOutputStream.close();        } catch (FileNotFoundException e) {            e.printStackTrace();        } catch (IOException e) {            e.printStackTrace();        }    }    /**     * 获取当前日期     *     * @return     */    private static String getCurrentDateString() {        String result = null;        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd",Locale.getDefault());        Date nowDate = new Date();        result = sdf.format(nowDate);        return result;    }    // 单例模式获取唯一的MyApplication实例    public static MyApplication getInstance() {        if (instance_app == null) {            instance_app = new MyApplication();        }        return instance_app;    }    // 添加Activity到容器中    public void addActivity(Activity activity) {        activityList.add(activity);    }    // 遍历所有Activity并finish    public void exit() {        for (Activity aty_list : activityList) {            aty_list.finish();        }        System.exit(0);    }    public void onLowMemory() {        super.onLowMemory();        System.gc();    }}