public class CrashHandler implements Thread.UncaughtExceptionHandler {

    private static final String TAG = "CrashHandler";
    private static final boolean DEBUG = true;
    private static final String PATH = Environment.getExternalStorageDirectory().getPath() + "/CrashTest/log/";
    private static final String FILE_NAME = "crash";
    private static final String FILE_NAME_SUFFIX = ".trace";

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

    private CrashHandler() {
    }

    public static CrashHandler getInstance() {
        return sInstance;
    }

    public void init(Context context) {
        mContext = context.getApplicationContext();
        mDefaultCrashHandler = Thread.getDefaultUncaughtExceptionHandler();
        Thread.setDefaultUncaughtExceptionHandler(this);
    }

    @Override
    public void uncaughtException(Thread t, Throwable e) {
        try {
            dumpExceptionToSDCard(e);
            uploadExceptionToServer();
        } catch (IOException e1) {
            e1.printStackTrace();
        }

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

    }

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

        File dir = new File(PATH);
        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(PATH + FILE_NAME + time + FILE_NAME_SUFFIX);

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

    private void dumpPhoneInfo(PrintWriter pw) throws PackageManager.NameNotFoundException {
        PackageManager manager = mContext.getPackageManager();
        PackageInfo pi = manager.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() {
        //TODO: Upload Exception Message To Web Server
    }
}

public class BaseApplication extends Application {

    private static BaseApplication sInstance;

    @Override
    public void onCreate() {
        super.onCreate();
        sInstance = this;
        CrashHandler crashHandler = CrashHandler.getInstance();
        crashHandler.init(this);
    }

    public static BaseApplication getInstance() {
        return sInstance;
    }

}