[iOS]列表已读/文章收藏

本文主要是介绍[iOS]列表已读/文章收藏，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

[iOS]列表已读/文章收藏

Demo：http://download.csdn.net/detail/u012881779/9476772

收藏

#import "FavManager.h"
#import "BaseDB.h"
#import "SBJson.h"@implementation FavManager- (void)addToFavarite:(NSDictionary *)dic FavType:(FAVTYPE)favType{NSDictionary *_dic=[NSDictionary dictionaryWithDictionary:dic];BaseDB *baseDB=[[BaseDB alloc] init];[baseDB openDB];//favtimestamp[baseDB createTable:@"Favarites" columns:@"aid INTEGER PRIMARY KEY,json text,favType integer,dateTime text"];NSMutableArray *arr=[NSMutableArray arrayWithObjects:[_dic objectForKey:@"id"]==NULL?[_dic objectForKey:@"gid"]:[_dic objectForKey:@"id"],[_dic JSONRepresentation],[NSNumber numberWithInt:favType],[NSString stringWithFormat:@"%.f",[[NSDate date] timeIntervalSince1970]], nil];[baseDB insertTableValues:@"Favarites" values:arr];[baseDB closeDB];[baseDB release];
}- (BOOL)hasFavarited:(NSString *)aid{BaseDB *baseDB=[[BaseDB alloc] init];[baseDB openDB];NSInteger i = [[baseDB selectForColumn:@"aid" value:aid tableName:@"Favarites"] count];[baseDB closeDB];[baseDB release];return i>0?YES:NO;
}- (NSArray *)fetchFavariteList:(FAVTYPE)favType{BaseDB *baseDB=[[BaseDB alloc] init];[baseDB openDB];NSMutableArray *listArray=[NSMutableArray array];NSArray *temp=[NSArray array];temp=[baseDB selectSequence:[NSString stringWithFormat:@"SELECT * FROM Favarites WHERE favType=%d order by dateTime desc",favType]];for (int i = 0 ; i<[temp count]; i++) {NSDictionary *dic = [[[temp objectAtIndex:i] objectForKey:@"json"] JSONValue];NSMutableDictionary *mDict = [dic mutableCopy];[mDict setObject:[NSString stringWithFormat:@"%d",favType] forKey:@"favtype"];[mDict setObject:[[temp objectAtIndex:i] objectForKey:@"dateTime"] forKey:@"dateTime"];[listArray addObject:mDict];[mDict release];}[baseDB closeDB];[baseDB release];return listArray;
}- (void)deleteFromFavarite:(NSString *)aid{BaseDB *baseDB=[[BaseDB alloc] init];[baseDB openDB];[baseDB deleteForColumn:@"aid" value:aid tableName:@"Favarites"];[baseDB closeDB];[baseDB release]; 
}- (void)clearFavarites{BaseDB *baseDB=[[BaseDB alloc] init];[baseDB openDB];[baseDB deleteAll:@"Favarites"];[baseDB closeDB];[baseDB release];
}//收藏已读、未读
+ (void)setRead:(NSString *)aid{BaseDB *baseDB=[[BaseDB alloc] init];[baseDB openDB];if (![baseDB tableExists:@"ListStatus"]) {[baseDB createTable:@"ListStatus" columns:@"aid INTEGER PRIMARY KEY"];}[baseDB executeSQL:[NSString stringWithFormat:@"INSERT INTO ListStatus VALUES(%@)",aid]];[baseDB closeDB];[baseDB release];
}+ (BOOL)hasRead:(NSString *)aid{BaseDB *baseDB=[[BaseDB alloc] init];[baseDB openDB];NSInteger i=[[baseDB selectForColumn:@"aid" value:aid tableName:@"ListStatus"] count];[baseDB closeDB];[baseDB release];return i > 0?YES:NO;
}@end

数据库

#import "BaseDB.h"
#import <Foundation/Foundation.h>
#import "FMDatabase.h"
#import "FMDatabaseAdditions.h"
#import "FMResultSet.h"
@interface BaseDB : NSObject{
FMDatabase *fmdb;
}
@implementation BaseDB
@synthesize fmdb;- (void)dealloc{self.fmdb   = nil;[super dealloc];
}-(void)openDB{NSString *documentsDirectory =NSHomeDirectory();NSString *path = [documentsDirectory stringByAppendingPathComponent:@"/Library/Caches/Caches.db"];NSFileManager *fileManager=[[NSFileManager alloc] init];if ([fileManager fileExistsAtPath:path]) {fmdb=[[FMDatabase alloc] initWithPath:path];if ([fmdb open]) {}}else{fmdb=[[FMDatabase alloc] initWithPath:path];if ([fmdb open]) {NSLog(@"创建了数据库并打开数据库成功!");}}[fileManager release];
}-(void)openDBMS{NSString *documentsDirectory =NSHomeDirectory();NSString *path = [documentsDirectory stringByAppendingPathComponent:@"/Library/Dbms"];NSFileManager *fileManager=[[NSFileManager alloc] init];if(![fileManager fileExistsAtPath:path]){[fileManager createDirectoryAtPath:path withIntermediateDirectories:YES attributes:nil error:nil];}NSString *filePath = [path stringByAppendingFormat:@"/Dbms.db"];if ([fileManager fileExistsAtPath:filePath]) {fmdb=[[FMDatabase alloc] initWithPath:filePath];if ([fmdb open]) {}}else{fmdb=[[FMDatabase alloc] initWithPath:filePath];if ([fmdb open]) {NSLog(@"创建了数据库并打开数据库成功!");}}[fileManager release];
}-(BOOL) tableExists:(NSString *)tableName{return [fmdb tableExists:tableName];
}-(void)deleteAll:(NSString *)tableName{NSString *sql=[NSString stringWithFormat:@"DELETE FROM %@",tableName];[fmdb executeUpdate:sql];
}-(void) deleteForColumn:(NSString *)columnName value:(NSString *)v tableName:(NSString *)name{NSString *sql=[NSString stringWithFormat:@"DELETE FROM %@ WHERE %@='%@'",name,columnName,v];NSLog(@"%@",sql);[fmdb executeUpdate:sql];
}- (void)deleteSQLString:(NSString *)condition tableName:(NSString *)name{NSString *sql=[NSString stringWithFormat:@"DELETE FROM %@ WHERE %@",name,condition];[fmdb executeUpdate:sql];
}-(void)createTable:(NSString *)tableName columns:(NSString *)columnsName{NSString *sql=[NSString stringWithFormat:@"CREATE TABLE %@ (%@)",tableName,columnsName];[fmdb executeUpdate:sql];
}-(void)insertTableValues:(NSString *)tableName values:(NSMutableArray *)Values{NSMutableString *sql=[[NSMutableString alloc] init];NSMutableArray *tempArray=[[NSMutableArray alloc] initWithArray:Values];[sql appendFormat:@"INSERT INTO %@ VALUES(",tableName];for (int i=0; i<[Values count]; i++) {if (i==[Values count]-1) {[sql appendFormat:@"?)"];}else{[sql appendFormat:@"?,"];}}[fmdb executeUpdate:sql withArgumentsInArray:tempArray];[sql release];[tempArray release];
}- (void)executeSQL:(NSString *)sql{[fmdb executeUpdate:sql];
}-(NSMutableArray *)selectAll:(NSString *)tableName{NSString *sql=[NSString stringWithFormat:@"SELECT * FROM %@",tableName];FMResultSet *rs=[fmdb executeQuery:sql];NSMutableArray *list=[[NSMutableArray alloc] init];while ([rs next]) {NSMutableDictionary *temp=[[NSMutableDictionary alloc] init];for (int i=0; i<[rs columnCount]; i++) {[temp addEntriesFromDictionary:[NSDictionary dictionaryWithObject:[rs stringForColumn:[rs columnNameForIndex:i]] forKey:[rs columnNameForIndex:i]]];}[list addObject:temp];[temp release];}return [list autorelease];
}-(NSMutableArray *)selectForColumn:(NSString *)columnName value:(NSString *)v tableName:(NSString *)name{NSString *sql=[NSString stringWithFormat:@"SELECT * FROM %@ WHERE %@='%@'",name,columnName,v];FMResultSet *rs=[fmdb executeQuery:sql];NSMutableArray *list=[[NSMutableArray alloc] init];while ([rs next]) {NSMutableDictionary *temp=[[NSMutableDictionary alloc] init];for (int i=0; i<[rs columnCount]; i++) {[temp addEntriesFromDictionary:[NSDictionary dictionaryWithObject:[rs stringForColumn:[rs columnNameForIndex:i]] forKey:[rs columnNameForIndex:i]]];}[list addObject:temp];[temp release];}return [list autorelease];
}-(NSMutableArray *) selectForNotColumn:(NSString *)columnName value:(NSString *)v tableName:(NSString *)name{NSString *sql=[NSString stringWithFormat:@"SELECT * FROM %@ WHERE %@!='%@'",name,columnName,v];FMResultSet *rs=[fmdb executeQuery:sql];NSMutableArray *list=[[NSMutableArray alloc] init];while ([rs next]) {NSMutableDictionary *temp=[[NSMutableDictionary alloc] init];for (int i=0; i<[rs columnCount]; i++) {[temp addEntriesFromDictionary:[NSDictionary dictionaryWithObject:[rs stringForColumn:[rs columnNameForIndex:i]] forKey:[rs columnNameForIndex:i]]];}[list addObject:temp];[temp release];}return [list autorelease] ;
}-(void)updateForColumn:(NSString *)columnName value:(NSString *)v tableName:(NSString *)name whereColumn:(NSString *)where whereValue:(NSString *)whereV{NSString *sql=[NSString stringWithFormat:@"UPDATE %@ SET %@='%@' WHERE %@='%@'",name,columnName,v,where,whereV];[fmdb executeUpdate:sql];
}-(NSMutableArray *)selectSequence:(NSString *)sql{NSLog(@"SQL:%@",sql);FMResultSet *rs=[fmdb executeQuery:sql];NSMutableArray *list=[[NSMutableArray alloc] init];while ([rs next]) {NSMutableDictionary *temp=[[NSMutableDictionary alloc] init];for (int i=0; i<[rs columnCount]; i++) {[temp addEntriesFromDictionary:[NSDictionary dictionaryWithObject:[rs stringForColumn:[rs columnNameForIndex:i]] forKey:[rs columnNameForIndex:i]]];}[list addObject:temp];[temp release];}return [list autorelease];    
}@end

示意图：

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