+ (void)getPersonByID:(int)ID {
sqlite3 *db = [DB open];
sqlite3_stmt *stmt = nil;
int result = sqlite3_prepare_v2(db, "select * from Persons where ID = 1", -1, &stmt, nil);
if (result == SQLITE_OK) {
NSData *data = [NSData dataWithBytes:sqlite3_column_blob(stmt, 3) length:sqlite3_column_bytes(stmt, 3)];
UIImage *image = [UIImage imageWithData:data];
}
}
+ (void)addPersonByPerson:(Person *)person {
sqlite3 *db = [DB open];
sqlite3_stmt *stmt = nil;
int result = sqlite3_prepare_v2(db, "insert into Persons (name, image) values (?, ?)", -1, &stmt, nil);
if (result == SQLITE_OK) {
sqlite3_bind_text(stmt, 1, "name", -1, nil);
//参数1.语句对象
//参数2.？下标，从1开始
//参数3.传递的字节
//参数4.字节长度
//参数5.如果传递字节长度，不是总字节数，执行的操作给nil。
NSData *data = UIImagePNGRepresentation(person.image);
sqlite3_bind_blob(stmt, 2, [data bytes] , (int)data.length, nil);
}
}