[android开发]天气预报项目的开发之天气工具类-2

这个WeatherUtil做了一些事情:

1.设置天气城市

2.设置通知的显示间隔, 也就是每隔多久推送一次天气信息的通知.

3.获取显示到TextView中的天气数据的文本.

4.天气数据的持久化.

public class WeatherUtil {
public static final String FILE_RESULT = "FILE_RESULT";
public static Long lastRequestTime;

public static final String url = "http://m.weather.com.cn/mweather/101280101.shtml";

private static Result result;

private static long requestInterval = 3600 * 1000;

public static Context context;

public static String location = "广州";
public static Long noti_show_interval = (long) (4 * 3600 * 1000);

private static int[] pm25Int = new int[] { 50, 100, 150, 200, 300, Integer.MAX_VALUE };
private static String[] pm25Str = new String[] { "优", "良", "轻度污染", "中度污染", "重度污染", "严重污染" };

public static void init(Context ctx) {
context = ctx;
location = (String) SPUtil.get(context, "location", "广州");
noti_show_interval = (Long) SPUtil.get(context, "noti_show_interval", (long) (4 * 3600 * 1000));
}

public static void setNotiInterval(double hour) {
WeatherUtil.noti_show_interval = (long) (hour * 3600 * 1000);
SPUtil.put(context, "noti_show_interval", noti_show_interval);
}

public static void setLocation(String location) {
WeatherUtil.location = location;
SPUtil.put(context, "location", location);
}

public static void setResult(Result bean) {
result = bean;
ObjectWriter.write(context, result, FILE_RESULT);
}

public static Result getLocalWeather() {
if (result == null)
result = (Result) ObjectWriter.read(context, FILE_RESULT);
return result;
}

public static void sendUpdateViewBroadcast(){
Intent intent = new Intent();
intent.setAction(Constant.INTENT_UPDATE_VIEW);
context.sendBroadcast(intent);
}

public static Long getLastRequetTime() {
if (lastRequestTime == null)
lastRequestTime = (Long) SPUtil.get(context, "lastRequestTime", 0l);
return lastRequestTime;
}

public static void setLastRequestTime(Long time) {
lastRequestTime = System.currentTimeMillis();
SPUtil.put(context, "lastRequestTime", lastRequestTime);
}

public static void getWeather(OnCallBack<Result> onCallBack) {
getWeather(requestInterval, onCallBack);
}

public static void getWeather(Long interval, final OnCallBack<Result> onCallBack) {
// 返回本地
if ((System.currentTimeMillis() - getLastRequetTime()) < interval) {
onCallBack.onCallBack(getLocalWeather());
} else {
requestWeather(new OnCallBack<Result>() {

@Override
public void onCallBack(Result t) {
onCallBack.onCallBack(t);
}
});
}
}

public static void requestWeather(final OnCallBack<Result> onCallBack) {

HttpUtil.post(context, location, new OnCallBack<Result>() {

@Override
public void onCallBack(Result bean) {
switch (bean.code) {
case Result.CODE_OK:
setResult(bean);
setLastRequestTime(System.currentTimeMillis());
break;
}
onCallBack.onCallBack(bean);
}
});

}

public static String getTodayAndTomorrowWeather(Result result) {
String str0 = getCurrWeather(result);
String str1 = getWeatherStr(result.weather_data.get(1));
return str0 + "<br>" + str1;
}

public static String getCurrWeather(Result result) {

StringBuilder sb = new StringBuilder();
sb.append("<font color='#999999'>" + "当前" + "</font> ");
if (!TextUtils.isEmpty(result.currentDegree))
sb.append(getFontHtml("00BCD4", result.currentDegree));

try {
int pm25 = Integer.parseInt(result.pm25);
int i = 0;
for (; i < pm25Int.length; i++) {
if (pm25 < pm25Int[i])
break;
}
sb.append(getFontHtml("F68F6C", pm25Str[i]));
} catch (Exception e) {
}
return sb.toString();
}

public static String getCurrNotiWeather(Result result) {
StringBuilder sb = new StringBuilder();
sb.append("<font color='#999999'>" + "当前" + "</font> ");
if (!TextUtils.isEmpty(result.currentDegree))
sb.append(getFontHtml("00BCD4", result.currentDegree));
if (!TextUtils.isEmpty(result.today.tickerText))
sb.append(getFontHtml("48CFAE", result.today.tickerText));
return sb.toString();
}

public static String getWeatherStr(Weather weather) {
StringBuilder sb = new StringBuilder();
sb.append("<font color='#999999'>" + weather.date + "</font> ");
sb.append(getFontHtml("00BCD4", weather.temperature));
sb.append(getFontHtml("f08080", weather.weather + ", " + weather.wind));

return sb.toString();
}

public static String getAllWeather(Result result, boolean not_doday) {
StringBuilder sb = new StringBuilder();
for (Weather w : result.weather_data) {
if (not_doday) {
not_doday = false;
continue;
}
sb.append(getWeatherStr(w)).append("<br><br>");
}
return sb.toString();
}

public static String getFontHtml(String font, String str) {
return "<font color='#" + font + "'>" + "[" + str + "]</font>" + " ";
}

public static String getTickerText(Result result) {
return "<font color='#F68F6C'>" + "(" + result.today.tickerText + ")</font>" + " ";
}

public static Degree getMaxAndMinDegree(Weather w) {
String temp = w.temperature;
Integer max = null;
Integer min = null;
try {
String str = temp.substring(0, temp.indexOf(" "));
max = Integer.parseInt(str);

str = temp.substring(temp.lastIndexOf(" ") + 1, temp.lastIndexOf("℃"));
min = Integer.parseInt(str);

if (max < min) {
int t = max;
max = min;
min = t;
}
return new Degree(max, min);
} catch (Exception e) {
}
return new Degree(null, null);
}

static class Degree {
public Degree(Integer max, Integer min) {
this.max = max;
this.min = min;
}

public Integer max;
public Integer min;
}

private static String getNotiTickerText(Weather w0, Weather w1) {
Degree d0 = getMaxAndMinDegree(w0);
Degree d1 = getMaxAndMinDegree(w1);

StringBuilder sb = new StringBuilder();
if (w1.weather.contains("雨")) {
return "明天下雨";
}

if (d0.max == null || d0.min == null || d1.max == null || d1.min == null || d0.max == d0.min || d1.max == d1.min) {
return null;
}

int sub = d0.min - d1.min;
if ((sub) > 2) {
return "明天降温(" + sub + "℃)";
}

sub = d1.max - d0.max;
if ((sub) > 2) {
return "明天升温(" + sub + "℃)";
}

return null;
}

public static String setTickerText(Result result) {
try {
Weather w0 = result.today;
Weather w1 = result.tomorrow;

String tickerText = getNotiTickerText(w0, w1);
w0.tickerText = tickerText;
return tickerText;
} catch (Exception e) {
return null;
}
}

}

至于设置天气城市和设置通知间隔的activity就不贴上来了, 只是单纯的调用上面WeatherUtil中的方法即可..