static ShareData *fm = nil;
static FMDatabase *fmdb = nil;
@implementation ShareData
+(ShareData *)sharedata{
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
fm = [[ShareData alloc]init];
[fm initDB];
});
return fm;
}
+(instancetype)allocWithZone:(struct _NSZone *)zone{
if (fm == nil ) {
fm = [super allocWithZone:zone];
}
return fm;
}
-(id)copy{
return self;
}
-(id)mutableCopy{
return self;
}
-(void)initDB{
NSString *docment = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES)lastObject];
NSString *path = [docment stringByAppendingPathComponent:@"XH.sqlite"];
fmdb = [[FMDatabase alloc]initWithPath:path];
if ([fmdb open]) {
[fmdb executeUpdate:@"create table class (tagId integer primary key autoincrement, name text,age text,like text)"];
[fmdb close];
}else{
NSLog(@"数据表创建失败");
}
}
-(NSMutableArray *)Marr{
NSMutableArray *Arr = [NSMutableArray array];
[fmdb open];
FMResultSet *fmset = [[FMResultSet alloc]init];
fmset = [fmdb executeQuery:@"select * from class"];
while ([fmset next]) {
Data *d = [[Data alloc]init];
d.tabId = [fmset intForColumn:@"tagId"];
d.name = [fmset stringForColumn:@"name"];
d.age = [fmset stringForColumn:@"age"];
d.like = [fmset stringForColumn:@"like"];
[Arr addObject:d];
}
[fmdb close];
return Arr;
}
-(void)addData:(Data *)AddD{
BOOL isc = false;
NSArray *arr = [self Marr];
for (Data *d in arr) {
if ([d.name isEqualToString:AddD.name]&&[d.age isEqualToString:AddD.age]&&[d.like isEqualToString:AddD.like]) {
isc = true;
}
}
if (isc) {
NSLog(@"数据相同");
}else{
[fmdb open];
BOOL isb = [fmdb executeUpdate:@"insert into class values(null,?,?,?)",AddD.name,AddD.age,AddD.like];
if (isb) {
NSLog(@"添加成功");
}else{
NSLog(@"添加失败");
}
}
[fmdb close];
}
-(void)RemoveData:(Data*)deleteData{
[fmdb open];
NSString *sql = [NSString stringWithFormat:@"DELETE FROM class WHERE tagId =%ld",deleteData.tabId];
BOOL isb = [fmdb executeUpdate:sql];
if (isb) {
NSLog(@"删除成功");
}else{
NSLog(@"删除失败");
}
[fmdb close];
}
-(void)UpData:(Data *)Updata{
[fmdb open];
NSString *str = [NSString stringWithFormat:@"update class set name = '%@',age = '%@', like = '%@' where tagId = %ld",Updata.name,Updata.age,Updata.like,Updata.tabId];
BOOL isb = [fmdb executeUpdate:str];
if (isb) {
NSLog(@"修改成功");
}else{
NSLog(@"修改失败");
}
[fmdb close];
}
