原文链接：http://www.apkbus.com/blog-725801-62074.html
[代码]java代码：
01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 | public ArrayList<string> getCityList(){ ArrayList<string> cityList1=new ArrayList<string>(); Map<string,string> map=(Map<string, string="">) sharedPreferences.getAll(); Collection<string> collection=map.values(); Iterator<string> iterator=collection.iterator();
while(iterator.hasNext()){ String city=iterator.next(); System.out.println("城市----"+city); if(!(city.equals("0")||city.equals("1"))){ cityList1.add(city); } } //用一个HashSet来将cityList1里面的重复元素去除 HashSet<string> h=new HashSet<string>(cityList1); cityList1.clear(); cityList1.addAll(h); return cityList1; }
/* * 增加城市 */ public boolean setCityList(String key,String value){ SharedPreferences.Editor editor=sharedPreferences.edit(); editor.putString(key, value); boolean isSet=editor.commit(); return isSet; } /* * 删除城市 */ public boolean deleteCity(String key){ SharedPreferences.Editor editor=sharedPreferences.edit(); editor.remove(key); boolean isDelete=editor.commit(); return isDelete; }
/* * 双击退出 * @see android.app.Activity#onKeyDown(int, android.view.KeyEvent) */ @Override public boolean onKeyDown(int keyCode, KeyEvent event) { switch (keyCode) { case KeyEvent.KEYCODE_BACK: if(System.currentTimeMillis()-time>2000){ Toast.makeText(this, "退出？", 1000).show(); time=System.currentTimeMillis(); }else{ finish(); }
return false;
default: break; } return super.onKeyDown(keyCode, event); } } \</string></string></string></string></string,></string,string></string></string></string> |
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