d

app/src/main/java/utils/DateUtilss.java

@@ -29,6 +29,7 @@ import java.text.ParseException;
 import java.text.SimpleDateFormat;
 import java.util.Calendar;
 import java.util.Date;
+import java.util.GregorianCalendar;
 import java.util.Locale;
 
 /**
@@ -571,4 +572,29 @@ public class DateUtilss {
 
     }
 
+    public static java.sql.Date getBeforeAfterDate(String datestr, int day) {
+        SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd");
+        java.sql.Date olddate = null;
+        try {
+            df.setLenient(false);
+            olddate = new java.sql.Date(df.parse(datestr).getTime());
+        } catch (ParseException e) {
+            throw new RuntimeException("日期转换错误");
+        }
+        Calendar cal = new GregorianCalendar();
+        cal.setTime(olddate);
+
+        int Year = cal.get(Calendar.YEAR);
+        int Month = cal.get(Calendar.MONTH);
+        int Day = cal.get(Calendar.DAY_OF_MONTH);
+
+        int NewDay = Day + day;
+
+        cal.set(Calendar.YEAR, Year);
+        cal.set(Calendar.MONTH, Month);
+        cal.set(Calendar.DAY_OF_MONTH, NewDay);
+
+        return new java.sql.Date(cal.getTimeInMillis());
+    }
+
 }