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[objective-c]NSDateから文字列生成  @ iOS Develop , objective-c 2014年1月17日
NSDateから文字列生成
-(NSString*) getDatetimeFromDate:(NSDate*)date
{
    NSDateFormatter* form = [[NSDateFormatter alloc] init];
    NSCalendar* cal = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];
    [form setCalendar: cal];
    [form setDateFormat:@"yyyy-MM-dd HH:mm:ss"];
    NSString* str = [form stringFromDate:date];
    return str;
}
NSString*dateString=[self getDatetimeFromDate:[NSDate date]];
[objective-c]EGODatabase #9 カラムの型一覧取得  @ EGODatabase , iOS Develop , objective-c 2014年1月16日
カラムの型一覧取得
-(EGODatabase*)getDB
{
    EGODatabase* database = [EGODatabase databaseWithPath:[NSHomeDirectory() stringByAppendingPathComponent:@"Documents/database.db"]];
    return database;
}
-(NSDictionary*)getColumnTypesByTableName:(NSString*)tableName
{
    EGODatabase*db=[self getDB];
    NSString*sql=[NSString stringWithFormat:@"pragma table_info(%@)",tableName];
    EGODatabaseResult*result=[db executeQuery:sql];
    NSMutableDictionary*dic=[NSMutableDictionary dictionary];
    for (EGODatabaseRow*row in result) {
        [dic setObject:[row stringForColumn:@"type"] forKey:[row stringForColumn:@"name"]];
    }
    return dic;
}
[objective-c]EGODatabase #8 カラム名一覧取得  @ EGODatabase , iOS Develop , objective-c 2014年1月15日
カラム名一覧取得
-(NSArray*)getColumnNamesByTableName:(NSString*)tableName{
    EGODatabase*db=[self getDB];
    NSString*sql=[NSString stringWithFormat:@"pragma table_info(%@)",tableName];
    EGODatabaseResult*result=[db executeQuery:sql];
    NSMutableArray*list=[NSMutableArray arrayWithCapacity:[result count]];
    for (EGODatabaseRow*row in result) {
        [list addObject:[row stringForColumn:@"name"]];
    }
    return [NSArray arrayWithArray:list];
}
[objective-c]EGODatabase #7 テーブル一覧取得  @ EGODatabase , iOS Develop , objective-c 2014年1月14日
テーブル一覧取得
-(NSArray*)getTableNameList{
    EGODatabase*db=[self getDB];
    NSString*sql=@"select name from sqlite_master where type = 'table' order by name";
    EGODatabaseResult*result=[db executeQuery:sql];
    NSMutableArray*list=[NSMutableArray arrayWithCapacity:[result count]];
    for (EGODatabaseRow*row in result) {
        [list addObject:[row stringForColumn:@"name"]];
    }
    return [NSArray arrayWithArray:list];
}
-(EGODatabase*)getDB{
    EGODatabase* database = [EGODatabase databaseWithPath:[NSHomeDirectory() stringByAppendingPathComponent:@"Documents/database.db"]];
    return database;
}
-(BOOL)isExistTableByName:(NSString*)tableName{
    NSArray*tables=[self getTableNameList];
    return [tables containsObject:tableName];
}
[objective-c]ファイル存在確認  @ iOS Develop , objective-c 2013年12月4日
ファイル存在確認
//Documentsフォルダ内を確認
-(BOOL)isExistFile:(NSString*)fileName{
    NSString* path=[NSHomeDirectory() stringByAppendingPathComponent:@"Documents"];
    path=[path stringByAppendingPathComponent:fileName];
    return [[NSFileManager defaultManager] fileExistsAtPath:path];
}
//fullパスで確認
-(BOOL)isExistFileByFullPath:(NSString*)path{
    return [[NSFileManager defaultManager] fileExistsAtPath:path];
}