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JSON仅在JSON格式数据中显示“serving_description”的最后一个对象'100g'，请参见下文。而不是所有的“serving_description”对象。获取JSONArray的所有请求的JSONObjects。它仅显示最后一个JSONObject
的数组服务 如果你看一下JSON格式的数据下面你会看到，有多个“serving_description”的。
我想获得所有可用选项的“serving_description”来显示，而不是它显示的最后一个对象。我如何显示所有的“serving_descriptions”？
我认为错误在于，但我可能是错的，这就是为什么我问：
for (int n = 0; n < foodName.length(); n++) {
JSONObject object = foodName.getJSONObject(n);
String shit = object.getString("serving_description");
Log.v("FATSEC", "" + shit);
ret = shit + "";
}
类，的AsyncTask
@Override
public void onClick(View v) {
new AsyncTask<String, String, String>() {
@Override
protected String doInBackground(String... arg0) {
search = (EditText) findViewById(R.id.editText1);
String SEARCH = search.getText().toString();
JSONObject food = getFood(SEARCH);
Log.v("FATSEC", "TEST");
String ret = "";
try {
JSONArray foodName = food.getJSONObject("food")
.getJSONObject("servings")
.getJSONArray("serving");
for (int n = 0; n < foodName.length(); n++) {
JSONObject object = foodName.getJSONObject(n);
String shit = object
.getString("serving_description");
Log.v("FATSEC", "" + shit);
ret = shit + "";
}
} catch (JSONException e) {
e.printStackTrace();
}
return ret;
}
@Override
protected void onPostExecute(String result) {
super.onPostExecute(result);
// ans.setText("# of Servings: " + result);
ans.setText("Servings: " + result);
}
}.execute();
}
});
格式化JSON数据
{
"servings":{
"serving":[
{
"vitamin_a":"0",
"calcium":"2",
"serving_description":"1 cup cooked",
"vitamin_c":"0",
"carbohydrate":"44.08",
"metric_serving_unit":"g",
"fat":"0.44",
"sodium":"577",
"polyunsaturated_fat":"0.119",
"fiber":"0.6",
"cholesterol":"0",
"iron":"10",
"serving_id":"16834",
"protein":"4.20",
"monounsaturated_fat":"0.138",
"potassium":"55",
"number_of_units":"1.000",
"calories":"204",
"measurement_description":"cup, cooked",
"saturated_fat":"0.120",
"metric_serving_amount":"158.000",
"sugar":"0.08",
"serving_url":"http:\/\/www.fatsecret.com\/calories-nutrition\/generic\/rice-white-cooked-regular?portionid=16834&portionamount=1.000"
},
{
"vitamin_a":"0",
"calcium":"6",
"serving_description":"1 cup, dry, yields",
"vitamin_c":"0",
"carbohydrate":"159.03",
"metric_serving_unit":"g",
"fat":"1.60",
"sodium":"2080",
"polyunsaturated_fat":"0.429",
"fiber":"2.3",
"cholesterol":"0",
"iron":"38",
"serving_id":"15284",
"protein":"15.16",
"monounsaturated_fat":"0.497",
"potassium":"200",
"number_of_units":"1.000",
"calories":"735",
"measurement_description":"cup, dry, yields",
"saturated_fat":"0.432",
"metric_serving_amount":"570.000",
"sugar":"0.29",
"serving_url":"http:\/\/www.fatsecret.com\/calories-nutrition\/generic\/rice-white-cooked-regular?portionid=15284&portionamount=1.000"
},
{
"vitamin_a":"0",
"calcium":"1",
"serving_description":"1 oz, dry, yields",
"vitamin_c":"0",
"carbohydrate":"24.27",
"metric_serving_unit":"g",
"fat":"0.24",
"sodium":"318",
"polyunsaturated_fat":"0.065",
"fiber":"0.3",
"cholesterol":"0",
"iron":"6",
"serving_id":"18252",
"protein":"2.31",
"monounsaturated_fat":"0.076",
"potassium":"30",
"number_of_units":"1.000",
"calories":"112",
"measurement_description":"oz, dry, yields",
"saturated_fat":"0.066",
"metric_serving_amount":"87.000",
"sugar":"0.04",
"serving_url":"http:\/\/www.fatsecret.com\/calories-nutrition\/generic\/rice-white-cooked-regular?portionid=18252&portionamount=1.000"
},
{
"vitamin_a":"0",
"calcium":"1",
"serving_description":"1 serving (105 g)",
"vitamin_c":"0",
"carbohydrate":"29.30",
"metric_serving_unit":"g",
"fat":"0.29",
"sodium":"383",
"polyunsaturated_fat":"0.079",
"fiber":"0.4",
"cholesterol":"0",
"iron":"7",
"serving_id":"17592",
"protein":"2.79",
"monounsaturated_fat":"0.092",
"potassium":"37",
"number_of_units":"1.000",
"calories":"135",
"measurement_description":"serving (105g)",
"saturated_fat":"0.080",
"metric_serving_amount":"105.000",
"sugar":"0.05",
"serving_url":"http:\/\/www.fatsecret.com\/calories-nutrition\/generic\/rice-white-cooked-regular?portionid=17592&portionamount=1.000"
},
{
"vitamin_a":"0",
"calcium":"1",
"serving_description":"100 g",
"vitamin_c":"0",
"carbohydrate":"27.90",
"metric_serving_unit":"g",
"fat":"0.28",
"sodium":"365",
"polyunsaturated_fat":"0.075",
"fiber":"0.4",
"cholesterol":"0",
"iron":"7",
"serving_id":"53181",
"protein":"2.66",
"monounsaturated_fat":"0.087",
"potassium":"35",
"number_of_units":"100.000",
"calories":"129",
"measurement_description":"g",
"saturated_fat":"0.076",
"metric_serving_amount":"100.000",
"sugar":"0.05",
"serving_url":"http:\/\/www.fatsecret.com\/calories-nutrition\/generic\/rice-white-cooked-regular?portionid=53181&portionamount=100.000"
}
]
},
"food_url":"http:\/\/www.fatsecret.com\/calories-nutrition\/generic\/rice-white-cooked-regular",
"food_type":"Generic",
"food_name":"White Rice",
"food_id":"4501"
}
工作。谢谢。 – 2014-09-04 18:05:41
我如何将每个“serving_description”分隔成自己的字符串？ – 2014-09-04 18:20:49
@EugeneH：使用像ArrayList，HashMap等任何集合来分别存储每个'serving_description' – 2014-09-04 18:23:27