String str = location.getDistrict();
String locate_result = str.substring(0, str.length() - 1);
//show weather
Intent intent=new Intent(ChooseAreaActivity.this,ShowWeatherActivity.class);
intent.putExtra("countyName",locate_result);
startActivity(intent);
finish();

editor.putBoolean("city_selected",true);

       SharedPreferences sharedPreferences= PreferenceManager.getDefaultSharedPreferences(this);
if(sharedPreferences.getBoolean("city_selected",false)){
    Intent intent=new Intent(ChooseAreaActivity.this,ShowWeatherActivity.class);
    startActivity(intent);
    finish();
    return;
}

        private void setUpMenu() {

    // attach to current activity;
    resideMenu = new ResideMenu(this);
    resideMenu.setUse3D(true);
    resideMenu.setBackground(R.drawable.menu_background);
    resideMenu.attachToActivity(this);
    //    resideMenu.setMenuListener(menuListener);
    //valid scale factor is between 0.0f and 1.0f. leftmenu'width is 150dip.
    resideMenu.setScaleValue(0.9f);
    resideMenu.setSwipeDirectionDisable(ResideMenu.DIRECTION_RIGHT);

    // create menu items;
    itemHome = new ResideMenuItem(this, R.drawable.icon_home, "切换城市");
    //    itemProfile = new ResideMenuItem(this, R.drawable.icon_profile, "Profile");
    //    itemCalendar = new ResideMenuItem(this, R.drawable.icon_calendar, "Calendar");
    itemSettings = new ResideMenuItem(this, R.drawable.icon_settings, "设置");

    itemHome.setOnClickListener(this);
    itemSettings.setOnClickListener(this);
    //itemProfile.setOnClickListener(this);
    //    itemCalendar.setOnClickListener(this);

    resideMenu.addMenuItem(itemHome, ResideMenu.DIRECTION_LEFT);
    resideMenu.addMenuItem(itemSettings, ResideMenu.DIRECTION_LEFT);
    //resideMenu.addMenuItem(itemProfile, ResideMenu.DIRECTION_LEFT);

    // You can disable a direction by setting ->
    // resideMenu.setSwipeDirectionDisable(ResideMenu.DIRECTION_RIGHT);

    findViewById(R.id.left_menu).setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            resideMenu.openMenu(ResideMenu.DIRECTION_LEFT);
        }
    });
}
    public boolean dispatchKeyEvent(KeyEvent event) {
    return super.dispatchKeyEvent(event);
}

        @Override
public void onBackPressed() {
    if (mBackKeyPressedTimes == 0) {
        Toast.makeText(this, "再按一次退出程序 ", Toast.LENGTH_SHORT).show();
        mBackKeyPressedTimes = 1;
        new Thread() {
            @Override
            public void run() {
                try {
                    Thread.sleep(2000);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                } finally {
                    mBackKeyPressedTimes = 0;
                }
            }
        }.start();
        return;
    } else {
        this.finish();
    }
    super.onBackPressed();
}