我正在从REST API中检索信息,它显示:
"Per 78g - Calories: 221kcal | Fat: 12.65g | Carbs: 16.20g | Protein: 10.88g"
我已将项目导入ListView,当用户点击某个项目时,我希望将每个数字值单独列出,如下所示,而不显示其文本。基于上面的例子:
String calories = 221;
String fat = 12.65;
String carbs = 16.20;
String protein = 10.88;
我摆脱了“Per 78g”:
String sd = food.getString("food_description");
String[] row = sd.split("-");
tems.add(new Item(food.getString("food_name"), row[1]));
在每个列表项中显示以下内容。
"Calories: 221kcal | Fat: 12.65g | Carbs: 16.20g | Protein: 10.88g"
当用户点击列表时项目:如何正确分离并删除文本?一旦我单独得到数值,我就没事了。
@Override
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) {
// TODO Auto-generated method stub
String calories = adapter.getItem(arg2).getDescription();
String[] calRow = calories.split("?|?");
Toast.makeText(getActivity(), "" + calRow[1], Toast.LENGTH_LONG).show();
mCallback.onFoodSelected(adapter.getItem(arg2).getTitle(), calRow[1]);
}
API文档非常糟糕且过时。我正在使用它,因为它有很好的信息。 对于那些认为这是不好的做法的人来说,这就是返回JSON的例子:
{
"foods":{
"food":{
"food_description":"Per 342g - Calories: 835kcal | Fat: 32.28g | Carbs: 105.43g | Protein: 29.41g",
"food_id":"4384",
"food_name":"Plain French Toast",
"food_type":"Generic",
"food_url":"http:\/\/www.fatsecret.com\/calories-nutrition\/generic\/french-toast-plain"
},
"max_results":"20",
"page_number":"0",
"total_results":"228"
}
}
答案 0 :(得分:1)
如下更改您的JSON,将使您的工作更轻松:
{
"foods":{
"food":{
"food_description":{
"Per" : "342g",
"Calories": "835kcal",
" Fat": "32.28g",
"Carbs":" 105.43g",
" Protein": "29.41g"
},
"food_id":"4384",
"food_name":"Plain French Toast",
"food_type":"Generic",
"food_url":"http:\/\/www.fatsecret.com\/calories-nutrition\/generic\/french-toast-plain"
},
"max_results":"20",
"page_number":"0",
"total_results":"228"
}
}
我假设你知道如何解析它 如果您无法更改json,请尝试使用StringTokenizer或使用String.split()。