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SweetParty/Expand/Category/NSString+String.m

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+
+
+
+#import "NSString+String.h"
+
+@implementation NSString (String)
+
+-(CGSize)sizeWithFont:(UIFont *)font With:(CGFloat)with{
+    CGSize size = CGSizeMake(with, MAXFLOAT);//限制文字显识的一个区域
+    NSDictionary *att = @{NSFontAttributeName : font};//文字显示的属性
+    CGRect rect = [self boundingRectWithSize:size options:NSStringDrawingUsesLineFragmentOrigin attributes:att context:nil];//计算出文字显示需要的大小
+    return rect.size;
+}
+-(CGSize)sizeWithFont:(UIFont *)font hiegth:(CGFloat)hiegth{
+    CGSize size = CGSizeMake(MAXFLOAT, hiegth);//限制文字显识的一个区域
+    NSDictionary *att = @{NSFontAttributeName : font};//文字显示的属性
+    
+    CGRect rect = [self boundingRectWithSize:size options:NSStringDrawingUsesLineFragmentOrigin attributes:att context:nil];
+    return rect.size;
+    
+}
+
+
+
+
++(NSString *)filePathInDocumentsWithFileName:(NSString *)filename{
+    NSString *documentsPath = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES).firstObject;
+    NSString *filePath = [documentsPath stringByAppendingPathComponent:filename];
+    return filePath;
+}
+
+
++ (NSString *)dictionaryToJson:(NSDictionary *)dic
+{
+    
+    NSError *parseError = nil;
+    
+    NSData *jsonData = [NSJSONSerialization dataWithJSONObject:dic options:NSJSONWritingPrettyPrinted error:&parseError];
+    
+    return [[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding];
+    
+}
++ (NSDictionary *)dictionaryWithJsonString:(NSString *)jsonStr{
+    NSData *data = [jsonStr dataUsingEncoding:NSUTF8StringEncoding];
+    NSDictionary *tempDic = [NSJSONSerialization JSONObjectWithData:data options:0 error:nil];
+    
+    return tempDic;
+}
+
+
+@end