WU：如何从没有名称的 JSONArray 中获取项目
WU: How to take items from a JSONArray that has no name
我正在使用 Weather Underground API，我正在尝试在 Android 中显示 hourly_forecast。
对于其他页面，事情更容易，就像 forecast10day:
"forecast":{
"txt_forecast": {
"date":"9:47 AM PDT",
"forecastday": [
{
"period":0,
"icon":"partlycloudy",
"icon_url":"http://icons.wxug.com/i/c/k/partlycloudy.gif",
"title":"Thursday",
"fcttext":"Sun and clouds mixed. Slight chance of a rain shower. High 78F. Winds WSW at 5 to 10 mph.",
"fcttext_metric":"Partly cloudy. Slight chance of a rain shower. High 26C. Winds WSW at 10 to 15 km/h.",
"pop":"20"
}
,
{
"period":1,
"icon":"nt_partlycloudy",
"icon_url":"http://icons.wxug.com/i/c/k/nt_partlycloudy.gif",
"title":"Thursday Night",
"fcttext":"Clear this evening then becoming cloudy after midnight. Low near 65F. Winds WSW at 5 to 10 mph.",
"fcttext_metric":"Clear early followed by cloudy skies overnight. Low 18C. Winds WSW at 10 to 15 km/h.",
"pop":"0"
}
,
{
"period":2,
"icon":"partlycloudy",
"icon_url":"http://icons.wxug.com/i/c/k/partlycloudy.gif",
"title":"Friday",
"fcttext":"Mostly cloudy early, then afternoon sunshine. High 76F. Winds WSW at 5 to 10 mph.",
"fcttext_metric":"Cloudy early with partial sunshine expected late. High near 25C. Winds WSW at 10 to 15 km/h.",
"pop":"0"
}
,
{
"period":3,
"icon":"nt_mostlycloudy",
"icon_url":"http://icons.wxug.com/i/c/k/nt_mostlycloudy.gif",
"title":"Friday Night",
"fcttext":"Partly cloudy during the evening followed by cloudy skies overnight. Low 64F. Winds WSW at 5 to 10 mph.",
"fcttext_metric":"Partly cloudy skies early will become overcast later during the night. Low 18C. Winds WSW at 10 to 15 km/h.",
"pop":"10"
}
,
{
"period":4,
"icon":"partlycloudy",
"icon_url":"http://icons.wxug.com/i/c/k/partlycloudy.gif",
"title":"Saturday",
"fcttext":"Cloudy early, becoming mostly sunny in the afternoon. High around 75F. Winds SW at 5 to 10 mph.",
"fcttext_metric":"Cloudy early, becoming mostly sunny in the afternoon. High 24C. Winds SW at 10 to 15 km/h.",
"pop":"10"
}
,
{
"period":5,
"icon":"nt_partlycloudy",
"icon_url":"http://icons.wxug.com/i/c/k/nt_partlycloudy.gif",
"title":"Saturday Night",
"fcttext":"Clear skies early will become overcast later during the night. Low 64F. Winds SW at 5 to 10 mph.",
"fcttext_metric":"Clear skies in the evening then becoming cloudy overnight. Low 18C. Winds SW at 10 to 15 km/h.",
"pop":"10"
}
,
.
.
.
{
"period":19,
"icon":"nt_partlycloudy",
"icon_url":"http://icons.wxug.com/i/c/k/nt_partlycloudy.gif",
"title":"Saturday Night",
"fcttext":"Mostly clear during the evening followed by mostly cloudy skies overnight. Low near 65F. Winds SW at 5 to 10 mph.",
"fcttext_metric":"Mostly clear during the evening followed by mostly cloudy skies overnight. Low 18C. Winds SW at 10 to 15 km/h.",
"pop":"0"
}
]
},
如你所见，它们被分为 period 秒，因此每个时期的每个项目都很容易拿走。
hourly_forecast和json页面不一样，不分期，不知道怎么取：
"hourly_forecast": [
{
"FCTTIME": {
"hour": "12","hour_padded": "12","min": "00","min_unpadded": "0","sec": "0","year": "2015","mon": "7","mon_padded": "07","mon_abbrev": "Jul","mday": "2","mday_padded": "02","yday": "182","isdst": "1","epoch": "1435863600","pretty": "12:00 PM PDT on July 02, 2015","civil": "12:00 PM","month_name": "July","month_name_abbrev": "Jul","weekday_name": "Thursday","weekday_name_night": "Thursday Night","weekday_name_abbrev": "Thu","weekday_name_unlang": "Thursday","weekday_name_night_unlang": "Thursday Night","ampm": "PM","tz": "","age": "","UTCDATE": ""
},
"temp": {"english": "76", "metric": "24"},
"dewpoint": {"english": "62", "metric": "17"},
"condition": "Partly Cloudy",
"icon": "partlycloudy",
"icon_url":"http://icons.wxug.com/i/c/k/partlycloudy.gif",
"fctcode": "2",
"sky": "46",
"wspd": {"english": "7", "metric": "11"},
"wdir": {"dir": "WSW", "degrees": "251"},
"wx": "Partly Cloudy",
"uvi": "10",
"humidity": "62",
"windchill": {"english": "-9999", "metric": "-9999"},
"heatindex": {"english": "-9999", "metric": "-9999"},
"feelslike": {"english": "76", "metric": "24"},
"qpf": {"english": "0.0", "metric": "0"},
"snow": {"english": "0.0", "metric": "0"},
"pop": "20",
"mslp": {"english": "29.94", "metric": "1014"}
}
,
{
"FCTTIME": {
"hour": "13","hour_padded": "13","min": "00","min_unpadded": "0","sec": "0","year": "2015","mon": "7","mon_padded": "07","mon_abbrev": "Jul","mday": "2","mday_padded": "02","yday": "182","isdst": "1","epoch": "1435867200","pretty": "1:00 PM PDT on July 02, 2015","civil": "1:00 PM","month_name": "July","month_name_abbrev": "Jul","weekday_name": "Thursday","weekday_name_night": "Thursday Night","weekday_name_abbrev": "Thu","weekday_name_unlang": "Thursday","weekday_name_night_unlang": "Thursday Night","ampm": "PM","tz": "","age": "","UTCDATE": ""
},
"temp": {"english": "77", "metric": "25"},
"dewpoint": {"english": "62", "metric": "17"},
"condition": "Partly Cloudy",
"icon": "partlycloudy",
"icon_url":"http://icons.wxug.com/i/c/k/partlycloudy.gif",
"fctcode": "2",
"sky": "37",
"wspd": {"english": "8", "metric": "13"},
"wdir": {"dir": "WSW", "degrees": "253"},
"wx": "Partly Cloudy",
"uvi": "11",
"humidity": "60",
"windchill": {"english": "-9999", "metric": "-9999"},
"heatindex": {"english": "-9999", "metric": "-9999"},
"feelslike": {"english": "77", "metric": "25"},
"qpf": {"english": "0.0", "metric": "0"},
"snow": {"english": "0.0", "metric": "0"},
"pop": "20",
"mslp": {"english": "29.94", "metric": "1014"}
}
,
{
"FCTTIME": {
"hour": "14","hour_padded": "14","min": "00","min_unpadded": "0","sec": "0","year": "2015","mon": "7","mon_padded": "07","mon_abbrev": "Jul","mday": "2","mday_padded": "02","yday": "182","isdst": "1","epoch": "1435870800","pretty": "2:00 PM PDT on July 02, 2015","civil": "2:00 PM","month_name": "July","month_name_abbrev": "Jul","weekday_name": "Thursday","weekday_name_night": "Thursday Night","weekday_name_abbrev": "Thu","weekday_name_unlang": "Thursday","weekday_name_night_unlang": "Thursday Night","ampm": "PM","tz": "","age": "","UTCDATE": ""
},
"temp": {"english": "79", "metric": "26"},
"dewpoint": {"english": "62", "metric": "17"},
"condition": "Clear",
"icon": "clear",
"icon_url":"http://icons.wxug.com/i/c/k/clear.gif",
"fctcode": "1",
"sky": "19",
"wspd": {"english": "9", "metric": "14"},
"wdir": {"dir": "WSW", "degrees": "254"},
"wx": "Sunny",
"uvi": "10",
"humidity": "57",
"windchill": {"english": "-9999", "metric": "-9999"},
"heatindex": {"english": "-9999", "metric": "-9999"},
"feelslike": {"english": "79", "metric": "26"},
"qpf": {"english": "0.0", "metric": "0"},
"snow": {"english": "0.0", "metric": "0"},
"pop": "0",
"mslp": {"english": "29.93", "metric": "1014"}
}
,
.
.
.
.
编辑
我想单独显示项目的文本，在不同的 TextViews 而不是显示每个项目的 TextView
您有一个可以导航到的结构：
hourly_forecast是一个数组，每个child都有属性：
"FCTTIME": {
"hour": "12","hour_padded": "12","min": "00","min_unpadded": "0","sec": "0","year": "2015","mon": "7","mon_padded": "07","mon_abbrev": "Jul","mday": "2","mday_padded": "02","yday": "182","isdst": "1","epoch": "1435863600","pretty": "12:00 PM PDT on July 02, 2015","civil": "12:00 PM","month_name": "July","month_name_abbrev": "Jul","weekday_name": "Thursday","weekday_name_night": "Thursday Night","weekday_name_abbrev": "Thu","weekday_name_unlang": "Thursday","weekday_name_night_unlang": "Thursday Night","ampm": "PM","tz": "","age": "","UTCDATE": ""
},
"temp": {"english": "76", "metric": "24"},
"dewpoint": {"english": "62", "metric": "17"},
"condition": "Partly Cloudy",
"icon": "partlycloudy",
"icon_url":"http://icons.wxug.com/i/c/k/partlycloudy.gif",
"fctcode": "2",
"sky": "46",
"wspd": {"english": "7", "metric": "11"},
"wdir": {"dir": "WSW", "degrees": "251"},
"wx": "Partly Cloudy",
"uvi": "10",
"humidity": "62",
"windchill": {"english": "-9999", "metric": "-9999"},
"heatindex": {"english": "-9999", "metric": "-9999"},
"feelslike": {"english": "76", "metric": "24"},
"qpf": {"english": "0.0", "metric": "0"},
"snow": {"english": "0.0", "metric": "0"},
"pop": "20",
"mslp": {"english": "29.94", "metric": "1014"}
你有什么问题？
这是你应该如何获得它：
JSONObject jsonObject = new JSONObject(YOUR_JSON_STRING);
JSONArray array = jsonObject.getJSONArray("hourly_forcast");
JSONObject object = array.getJSONObject(0); //GET FIRST OBJECT
JSONObject objectFCTTIME = object.getJSONObject("FCTTIME");
int hour = objectFCTTIME.getInt("hour");
要获得第二个，只需执行以下操作：
JSONObject object = array.getJSONObject(1); //GET SECOND OBJECT
JSONObject objectFCTTIME = object.getJSONObject("FCTTIME");
int hour = objectFCTTIME.getInt("hour");
为什么不用for循环遍历数组中的所有JsonObject？
使用 array.length() 获取尺寸，使用 array.get(index) 获取每个项目。
JSONObject jsonObject = new JSONObject(YOUR_JSON_STRING);
JSONArray array = jsonObject.getJSONArray("hourly_forcast");
int count = array.length();
for(int i = 0; i < count; i++){
//here you get each item...
JsonObject item = (JsonObject) array.get(i);
}
我正在使用 Weather Underground API，我正在尝试在 Android 中显示 hourly_forecast。
对于其他页面，事情更容易，就像 forecast10day:
"forecast":{
"txt_forecast": {
"date":"9:47 AM PDT",
"forecastday": [
{
"period":0,
"icon":"partlycloudy",
"icon_url":"http://icons.wxug.com/i/c/k/partlycloudy.gif",
"title":"Thursday",
"fcttext":"Sun and clouds mixed. Slight chance of a rain shower. High 78F. Winds WSW at 5 to 10 mph.",
"fcttext_metric":"Partly cloudy. Slight chance of a rain shower. High 26C. Winds WSW at 10 to 15 km/h.",
"pop":"20"
}
,
{
"period":1,
"icon":"nt_partlycloudy",
"icon_url":"http://icons.wxug.com/i/c/k/nt_partlycloudy.gif",
"title":"Thursday Night",
"fcttext":"Clear this evening then becoming cloudy after midnight. Low near 65F. Winds WSW at 5 to 10 mph.",
"fcttext_metric":"Clear early followed by cloudy skies overnight. Low 18C. Winds WSW at 10 to 15 km/h.",
"pop":"0"
}
,
{
"period":2,
"icon":"partlycloudy",
"icon_url":"http://icons.wxug.com/i/c/k/partlycloudy.gif",
"title":"Friday",
"fcttext":"Mostly cloudy early, then afternoon sunshine. High 76F. Winds WSW at 5 to 10 mph.",
"fcttext_metric":"Cloudy early with partial sunshine expected late. High near 25C. Winds WSW at 10 to 15 km/h.",
"pop":"0"
}
,
{
"period":3,
"icon":"nt_mostlycloudy",
"icon_url":"http://icons.wxug.com/i/c/k/nt_mostlycloudy.gif",
"title":"Friday Night",
"fcttext":"Partly cloudy during the evening followed by cloudy skies overnight. Low 64F. Winds WSW at 5 to 10 mph.",
"fcttext_metric":"Partly cloudy skies early will become overcast later during the night. Low 18C. Winds WSW at 10 to 15 km/h.",
"pop":"10"
}
,
{
"period":4,
"icon":"partlycloudy",
"icon_url":"http://icons.wxug.com/i/c/k/partlycloudy.gif",
"title":"Saturday",
"fcttext":"Cloudy early, becoming mostly sunny in the afternoon. High around 75F. Winds SW at 5 to 10 mph.",
"fcttext_metric":"Cloudy early, becoming mostly sunny in the afternoon. High 24C. Winds SW at 10 to 15 km/h.",
"pop":"10"
}
,
{
"period":5,
"icon":"nt_partlycloudy",
"icon_url":"http://icons.wxug.com/i/c/k/nt_partlycloudy.gif",
"title":"Saturday Night",
"fcttext":"Clear skies early will become overcast later during the night. Low 64F. Winds SW at 5 to 10 mph.",
"fcttext_metric":"Clear skies in the evening then becoming cloudy overnight. Low 18C. Winds SW at 10 to 15 km/h.",
"pop":"10"
}
,
.
.
.
{
"period":19,
"icon":"nt_partlycloudy",
"icon_url":"http://icons.wxug.com/i/c/k/nt_partlycloudy.gif",
"title":"Saturday Night",
"fcttext":"Mostly clear during the evening followed by mostly cloudy skies overnight. Low near 65F. Winds SW at 5 to 10 mph.",
"fcttext_metric":"Mostly clear during the evening followed by mostly cloudy skies overnight. Low 18C. Winds SW at 10 to 15 km/h.",
"pop":"0"
}
]
},
如你所见，它们被分为 period 秒，因此每个时期的每个项目都很容易拿走。
hourly_forecast和json页面不一样，不分期，不知道怎么取：
"hourly_forecast": [
{
"FCTTIME": {
"hour": "12","hour_padded": "12","min": "00","min_unpadded": "0","sec": "0","year": "2015","mon": "7","mon_padded": "07","mon_abbrev": "Jul","mday": "2","mday_padded": "02","yday": "182","isdst": "1","epoch": "1435863600","pretty": "12:00 PM PDT on July 02, 2015","civil": "12:00 PM","month_name": "July","month_name_abbrev": "Jul","weekday_name": "Thursday","weekday_name_night": "Thursday Night","weekday_name_abbrev": "Thu","weekday_name_unlang": "Thursday","weekday_name_night_unlang": "Thursday Night","ampm": "PM","tz": "","age": "","UTCDATE": ""
},
"temp": {"english": "76", "metric": "24"},
"dewpoint": {"english": "62", "metric": "17"},
"condition": "Partly Cloudy",
"icon": "partlycloudy",
"icon_url":"http://icons.wxug.com/i/c/k/partlycloudy.gif",
"fctcode": "2",
"sky": "46",
"wspd": {"english": "7", "metric": "11"},
"wdir": {"dir": "WSW", "degrees": "251"},
"wx": "Partly Cloudy",
"uvi": "10",
"humidity": "62",
"windchill": {"english": "-9999", "metric": "-9999"},
"heatindex": {"english": "-9999", "metric": "-9999"},
"feelslike": {"english": "76", "metric": "24"},
"qpf": {"english": "0.0", "metric": "0"},
"snow": {"english": "0.0", "metric": "0"},
"pop": "20",
"mslp": {"english": "29.94", "metric": "1014"}
}
,
{
"FCTTIME": {
"hour": "13","hour_padded": "13","min": "00","min_unpadded": "0","sec": "0","year": "2015","mon": "7","mon_padded": "07","mon_abbrev": "Jul","mday": "2","mday_padded": "02","yday": "182","isdst": "1","epoch": "1435867200","pretty": "1:00 PM PDT on July 02, 2015","civil": "1:00 PM","month_name": "July","month_name_abbrev": "Jul","weekday_name": "Thursday","weekday_name_night": "Thursday Night","weekday_name_abbrev": "Thu","weekday_name_unlang": "Thursday","weekday_name_night_unlang": "Thursday Night","ampm": "PM","tz": "","age": "","UTCDATE": ""
},
"temp": {"english": "77", "metric": "25"},
"dewpoint": {"english": "62", "metric": "17"},
"condition": "Partly Cloudy",
"icon": "partlycloudy",
"icon_url":"http://icons.wxug.com/i/c/k/partlycloudy.gif",
"fctcode": "2",
"sky": "37",
"wspd": {"english": "8", "metric": "13"},
"wdir": {"dir": "WSW", "degrees": "253"},
"wx": "Partly Cloudy",
"uvi": "11",
"humidity": "60",
"windchill": {"english": "-9999", "metric": "-9999"},
"heatindex": {"english": "-9999", "metric": "-9999"},
"feelslike": {"english": "77", "metric": "25"},
"qpf": {"english": "0.0", "metric": "0"},
"snow": {"english": "0.0", "metric": "0"},
"pop": "20",
"mslp": {"english": "29.94", "metric": "1014"}
}
,
{
"FCTTIME": {
"hour": "14","hour_padded": "14","min": "00","min_unpadded": "0","sec": "0","year": "2015","mon": "7","mon_padded": "07","mon_abbrev": "Jul","mday": "2","mday_padded": "02","yday": "182","isdst": "1","epoch": "1435870800","pretty": "2:00 PM PDT on July 02, 2015","civil": "2:00 PM","month_name": "July","month_name_abbrev": "Jul","weekday_name": "Thursday","weekday_name_night": "Thursday Night","weekday_name_abbrev": "Thu","weekday_name_unlang": "Thursday","weekday_name_night_unlang": "Thursday Night","ampm": "PM","tz": "","age": "","UTCDATE": ""
},
"temp": {"english": "79", "metric": "26"},
"dewpoint": {"english": "62", "metric": "17"},
"condition": "Clear",
"icon": "clear",
"icon_url":"http://icons.wxug.com/i/c/k/clear.gif",
"fctcode": "1",
"sky": "19",
"wspd": {"english": "9", "metric": "14"},
"wdir": {"dir": "WSW", "degrees": "254"},
"wx": "Sunny",
"uvi": "10",
"humidity": "57",
"windchill": {"english": "-9999", "metric": "-9999"},
"heatindex": {"english": "-9999", "metric": "-9999"},
"feelslike": {"english": "79", "metric": "26"},
"qpf": {"english": "0.0", "metric": "0"},
"snow": {"english": "0.0", "metric": "0"},
"pop": "0",
"mslp": {"english": "29.93", "metric": "1014"}
}
,
.
.
.
.
编辑
我想单独显示项目的文本，在不同的 TextViews 而不是显示每个项目的 TextView
您有一个可以导航到的结构：
hourly_forecast是一个数组，每个child都有属性：
"FCTTIME": {
"hour": "12","hour_padded": "12","min": "00","min_unpadded": "0","sec": "0","year": "2015","mon": "7","mon_padded": "07","mon_abbrev": "Jul","mday": "2","mday_padded": "02","yday": "182","isdst": "1","epoch": "1435863600","pretty": "12:00 PM PDT on July 02, 2015","civil": "12:00 PM","month_name": "July","month_name_abbrev": "Jul","weekday_name": "Thursday","weekday_name_night": "Thursday Night","weekday_name_abbrev": "Thu","weekday_name_unlang": "Thursday","weekday_name_night_unlang": "Thursday Night","ampm": "PM","tz": "","age": "","UTCDATE": ""
},
"temp": {"english": "76", "metric": "24"},
"dewpoint": {"english": "62", "metric": "17"},
"condition": "Partly Cloudy",
"icon": "partlycloudy",
"icon_url":"http://icons.wxug.com/i/c/k/partlycloudy.gif",
"fctcode": "2",
"sky": "46",
"wspd": {"english": "7", "metric": "11"},
"wdir": {"dir": "WSW", "degrees": "251"},
"wx": "Partly Cloudy",
"uvi": "10",
"humidity": "62",
"windchill": {"english": "-9999", "metric": "-9999"},
"heatindex": {"english": "-9999", "metric": "-9999"},
"feelslike": {"english": "76", "metric": "24"},
"qpf": {"english": "0.0", "metric": "0"},
"snow": {"english": "0.0", "metric": "0"},
"pop": "20",
"mslp": {"english": "29.94", "metric": "1014"}
你有什么问题？
这是你应该如何获得它：
JSONObject jsonObject = new JSONObject(YOUR_JSON_STRING);
JSONArray array = jsonObject.getJSONArray("hourly_forcast");
JSONObject object = array.getJSONObject(0); //GET FIRST OBJECT
JSONObject objectFCTTIME = object.getJSONObject("FCTTIME");
int hour = objectFCTTIME.getInt("hour");
要获得第二个，只需执行以下操作：
JSONObject object = array.getJSONObject(1); //GET SECOND OBJECT
JSONObject objectFCTTIME = object.getJSONObject("FCTTIME");
int hour = objectFCTTIME.getInt("hour");
为什么不用for循环遍历数组中的所有JsonObject？
使用 array.length() 获取尺寸，使用 array.get(index) 获取每个项目。
JSONObject jsonObject = new JSONObject(YOUR_JSON_STRING);
JSONArray array = jsonObject.getJSONArray("hourly_forcast");
int count = array.length();
for(int i = 0; i < count; i++){
//here you get each item...
JsonObject item = (JsonObject) array.get(i);
}