这是我的表视图控制器 – AudiotableVIEwController.h
#import <UIKit/UIKit.h>#import "Bank.h"#import "Player.h"@class Player;@interface AudiotableVIEwController : UItableVIEwController <UItableVIEwDelegate,UItableVIEwDataSource> { Player *myMainMan;}-(voID)addAudioEntityToArray:(Audiofile *)event;-(NSMutableArray *)recordingsArray;@end AudiotableVIEwController.m(实现文件)
#import "AudiotableVIEwController.h"@implementation AudiotableVIEwController-(voID)addAudioEntityToArray:(Audiofile *)event { NSIndexPath *indexPath; if(event.type) { [[MusikerVIEwController recordingsArray] addobject:event];//self? indexPath = [NSIndexPath indexPathForRow:0 inSection:0]; }else { [[MusikerVIEwController downloadsArray] addobject:event]; indexPath = [NSIndexPath indexPathForRow:0 inSection:1]; } [[self tableVIEw] setEditing:YES animated:NO]; [self.tableVIEw insertRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:UItableVIEwRowAnimationNone]; }- (voID)vIEwDIDLoad { [[self tableVIEw] reloadData]; [super vIEwDIDLoad]; self.Title = @"Audio files";//put this in application delegate self.navigationItem.leftbarbuttonItem = self.editbuttonItem;}- (NSInteger)numberOfSectionsIntableVIEw:(UItableVIEw *)tableVIEw{ // Return the number of sections. return 2;}- (NSInteger)tableVIEw:(UItableVIEw *)tableVIEw numberOfRowsInSection:(NSInteger)section{ // Return the number of rows in the section. NSLog(@"Place I"); if(section == 0) { return [[MusikerVIEwController recordingsArray] count]; } else if (section == 1) { return [[MusikerVIEwController downloadsArray] count]; }} …更多方法
以下是我的银行课程中可能相关的部分内容
Bank.h
#import <Foundation/Foundation.h>#import <AudioToolBox/AudioToolBox.h>#import "Audiofile.h"#import "AudiotableVIEwController.h"#import "MusikerAppDelegate.h"@interface Bank : NSObject <UIAlertVIEwDelegate> { NSManagedobjectContext *managedobjectContext; Audiofile *sound;}@property (retain,nonatomic) NSManagedobjectContext *managedobjectContext;+(Nsstring *)getDataPath:(Nsstring *)fileExtDate;-(Audiofile *)addAudiofileEntityToModelWithDate:(NSDate *)theD andURLString:(Nsstring *)str;-(BOol)removeAudioFromModel:(ID)audio;-(NSMutableArray *)getFetchArray;@end Bank.m
#import "Bank.h"@implementation Bank@synthesize managedobjectContext;- (Audiofile *)addAudiofileEntityToModelWithDate:(NSDate *)theD andURLString:(Nsstring *)str { sound = (Audiofile *)[NSEntityDescription insertNewObjectForEntityForname:@"Audiofile" inManagedobjectContext:managedobjectContext]; sound.creationDate = theD; sound.soundpath = str; //set the sound path to the sound file's url [self alertForTitle]; return sound;}- (BOol)saveContext { NSError *error = nil; if(!managedobjectContext) { NSLog(@"managedobejctContext problem at saveContext Bank"); } if (![managedobjectContext save:&error]) { return NO; } else { return YES; }}- (NSMutableArray *)getFetchArray { NSLog(@"ManagedobjectContext at getFetchArray"); NSLog(@"Context: %@",managedobjectContext); NSFetchRequest *request = [[NSFetchRequest alloc] init]; if(!managedobjectContext) { NSLog(@"There is no managedobjectContext in getFetchArray Bank"); } NSEntityDescription *entity = [NSEntityDescription entityForname:@"Audiofile" inManagedobjectContext:managedobjectContext]; [request setEntity:entity]; NSSortDescriptor *sortDescriptor = [[NSSortDescriptor alloc] initWithKey:@"creationDate" ascending:NO]; NSArray *sortDescriptors = [[NSArray alloc] initWithObjects:sortDescriptor,nil]; [request setSortDescriptors:sortDescriptors]; [sortDescriptors release]; [sortDescriptor release]; NSError *error = nil; NSMutableArray *mutableFetchResults = [[managedobjectContext executeFetchRequest:request error:&error] mutablecopy]; if (mutableFetchResults == nil) { NSLog(@"mutableFetchResults array is nil"); } [request release]; return mutableFetchResults;}+ (Nsstring *)getDataPath:(Nsstring *)fileExtDate { NSLog(@"getDataPath called"); NSArray *paths = NSSearchPathForDirectorIEsInDomains(NSdocumentDirectory,NSUserDomainMask,YES); Nsstring *documentsDirectory = [paths objectAtIndex:0]; documentsDirectory = [documentsDirectory stringByAppendingPathComponent:@"Musik Directory"]; //changing the recording directory to Musik Directory NSError *error; if (![[NSfileManager defaultManager] fileExistsAtPath:documentsDirectory]) { [[NSfileManager defaultManager] createDirectoryAtPath:documentsDirectory withIntermediateDirectorIEs:YES attributes:nil error:&error]; NSLog(@"In the if statement"); } Nsstring *docPath = [documentsDirectory stringByAppendingPathComponent:fileExtDate]; return docPath;} Player.h
#import <Foundation/Foundation.h>#import <AVFoundation/AVFoundation.h>#import "Bank.h"@class Bank;@interface Player : NSObject <AVAudioPlayerDelegate,AVAudioRecorderDelegate> {Bank *daBank;AVAudioPlayer *musicPlayer;AVAudioRecorder *musicRecorder;NSDate *myDate;Nsstring *strPath;Nsstring *documentPath_;NSMutableArray *arraylistofRecordSound;}-(voID)playSoundfile:(Nsstring *)soundfilePath;-(BOol)saveRecordingWithDate:(NSDate *)theD andURLString:(Nsstring *)str;-(voID)recordSomething;-(voID)playRecording;-(voID)play;+ (Nsstring *)dateString:(NSDate *)date;+ (Nsstring *)dateString;@end Player.m
- (Bank *)daBank { if(!daBank) { daBank = [[Bank alloc] init]; } return daBank;}-(BOol)saveRecording { //this is the method that adds the new object to both the //model and vIEw,the method that calls this method is not shown Bank *B = [MusikerVIEwController daBank]; AudiotableVIEwController *ATVC2 = [MusikerVIEwController ATVControl]; Audiofile *myAudiofileMusicX314 = [[B addAudiofileEntityToModelWithDate:myDate andURLString:strPath] retain]; myAudiofileMusicX314.type = true; [ATVC2 addAudioEntityToArray:myAudiofileMusicX314]; if(![B saveContext]) { NSLog(@"addAudiofileEntityToModel is returning a nil managedobjectContext"); return NO; } [myDate release]; [strPath release]; [myAudiofileMusicX314 release];[ATVC2 release]; return YES; } 最后但并非最不重要的,MusikVIEwController.h
#import <UIKit/UIKit.h>#import "Player.h"#import "Bank.h"#import <QuartzCore/QuartzCore.h>#import "MybuttonVIEw.h"#import "AudiotableVIEwController.h"@class AudiotableVIEwController;@class Bank;@class Player;@interface MusikerVIEwController : UIVIEwController {] BOol *pressed;}Player *myMainMan;Bank *daBank;AudiotableVIEwController *ATVControl;NSMutableArray *recordingsArray;NSMutableArray *downloadsArray;+ (Bank *)daBank;+ (Player *)myMainMan;+ (AudiotableVIEwController *)ATVControl;+ (NSMutableArray *)recordingsArray;+ (NSMutableArray *)downloadsArray;@end MusikVIEwController.m
+ (NSMutableArray *)recordingsArray { NSLog(@"recordingsArray called"); if(!recordingsArray) { recordingsArray = [[NSMutableArray alloc] init]; NSMutableArray *bigTempArray = [[[[Bank alloc] init] autorelease] getFetchArray]; //change this for(Audiofile *af in bigTempArray) if(af.type) { [recordingsArray addobject:af]; } NSLog(@"recordingsArray exists"); } return recordingsArray;}+ (NSMutableArray *)downloadsArray { NSLog(@"recordingsArray called"); if(!downloadsArray) { downloadsArray = [[NSMutableArray alloc] init]; // if(!bigTempArray) NSMutableArray *bigTempArray = [[[[Bank alloc] init] autorelease] getFetchArray]; for(Audiofile *af in bigTempArray) if(!af.type) { [downloadsArray addobject:af]; } } return downloadsArray;} 如果有更多可能相关的方法,请告诉我,我会很乐意发布它们.
我还应该提一下,我可以在启动应用程序后向阵列添加单个实体,但之后会出现同样的问题.
解决方法 我认为您的问题是视图控制器的体系结构.试试这个：1)在app delegate中设置所有核心数据堆栈.将关联的托管对象上下文作为属性传递给所有视图控制器.这就是Apple在许多示例代码示例中使用的模式.
2)对于每个表视图控制器,创建自己的NSFetchedResultsController,通常也作为属性.使用Apple样本作为指南.
3)永远不要像在代码中那样从其他视图控制器中获取任何数据.您不能也不应该从MusikerVIEwController获取AudiotableVIEwController的表数据.
拥有一个为查看控制器提供数据的中央数据对象是可能的,有时也是有用的.您不能将此数据对象作为视图控制器.这是对MVC设计模式的公然(并且在您的情况下是致命的)违反.您的错误很可能源于此(因为MusikerVIEwController不在屏幕上,甚至可能被释放).
4)确保在数据源方法中仅使用获取的结果控制器来填充表并传递媒体.
总结以上是内存溢出为你收集整理的ios – UITableView不更新全部内容，希望文章能够帮你解决ios – UITableView不更新所遇到的程序开发问题。
如果觉得内存溢出网站内容还不错，欢迎将内存溢出网站推荐给程序员好友。
欢迎分享，转载请注明来源：内存溢出
微信扫一扫
支付宝扫一扫
评论列表（0条）