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转自：http://www.cnblogs.com/wuhenke/archive/2012/02/07/2341656.html
使用资料库的第一件事，就是建立一个资料库。要注意的是，在iOS环境下，只有document directory 是可以进行读写的。在写程式时用的那个Resource资料夹底下的东西都是read-only。因此，建立的资料库要放在document 资料夹下。方法如下：
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NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); |
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NSString *documentDirectory = [paths objectAtIndex:0]; |
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NSString *dbPath = [documentDirectory stringByAppendingPathComponent:@"MyDatabase.db"]; |
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FMDatabase *db = [FMDatabase databaseWithPath:dbPath] ; |
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if (![db open]) { |
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NSLog(@“Could not open db.”); |
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return ; |
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} |
建立table
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[db executeUpdate:@"CREATE TABLE PersonList (Name text, Age integer, Sex integer, Phone text, Address text, Photo blob)"]; |
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[db executeUpdate:@"INSERT INTO PersonList (Name, Age, Sex, Phone, Address, Photo) VALUES (?,?,?,?,?,?)", |
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@"Jone", [NSNumber numberWithInt:20], [NSNumber numberWithInt:0], @“091234567”, @“Taiwan, R.O.C”, [NSData dataWithContentsOfFile: filepath]]; |
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[db executeUpdate:@"UPDATE PersonList SET Age = ? WHERE Name = ?",[NSNumber numberWithInt:30],@“John”]; |
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FMResultSet *rs = [db executeQuery:@"SELECT Name, Age, FROM PersonList"]; |
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while ([rs next]) { |
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NSString *name = [rs stringForColumn:@"Name"]; |
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int age = [rs intForColumn:@"Age"]; |
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} |
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[rs close]; |
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//找地址 |
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NSString *address = [db stringForQuery:@"SELECT Address FROM PersonList WHERE Name = ?",@"John”]; |
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//找年齡 |
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int age = [db intForQuery:@"SELECT Age FROM PersonList WHERE Name = ?",@"John”]; |
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原文地址：http://www.cnblogs.com/wangpei/p/4331904.html
