小编RAG*_*poR的帖子

是否可以以编程方式翻页UIPageViewController？

在为iPhone发布应用程序时,如果我禁用NSLog();它会表现更好吗？

这是我的代码

    UIButton *btn = [UIButton buttonWithType:UIButtonTypeRoundedRect];

    [btn setFrame:CGRectMake(0.0f, 0.0f, 100.0f, 100.0f)];
    [btn setTitle:[NSString stringWithFormat:@"Button %d", i+1] forState:UIControlStateNormal];     
    [btn addTarget:self action:@selector(buttonPressed:) forControlEvents:UIControlEventTouchUpInside];
    btn.titleLabel.frame = ???

之后AVAssetExportSession拥有完整导出视频.我打算通过Youtube上传视频路径.但[GDataUtilities MIMETypeForFileAtPath:path defaultMIMEType:@"video/mp4"]; 它只接受NSString.是否可以将NSUrl转换为NSString用于视频文件路径.

我试着用NSString *path = [ExportoutputURL absoluteString]; 它但崩溃了.

这是守则

- (void)exportDidFinish:(AVAssetExportSession*)session {
    ExportoutputURL = session.outputURL;

    _exporting = NO;
    NSIndexPath *exportCellIndexPath = [NSIndexPath indexPathForRow:2 inSection:kProjectSection];
    ExportCell *cell = (ExportCell*)[self.tableView cellForRowAtIndexPath:exportCellIndexPath];
    cell.progressView.progress = 1.0;
    [cell setProgressViewHidden:YES animated:YES];
    [self updateCell:cell forRowAtIndexPath:exportCellIndexPath];

    ALAssetsLibrary *library = [[ALAssetsLibrary alloc] init];
    if ([library videoAtPathIsCompatibleWithSavedPhotosAlbum:ExportoutputURL]) {
        [library writeVideoAtPathToSavedPhotosAlbum:ExportoutputURL
                                    completionBlock:^(NSURL *assetURL, NSError *error){
                                        dispatch_async(dispatch_get_main_queue(), ^{
                                            if (error) {
                                                NSLog(@"writeVideoToAssestsLibrary failed: %@", error);
                                                UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:[error localizedDescription]
                                                                                                    message:[error localizedRecoverySuggestion] …

根据此代码,如果我想访问imageView1和imageView2我怎样才能访问它？请给我看一些例子

例子cell.accessoryView.subviews？

UIImageView *imageView1 = [[[UIImageView alloc] init] autorelease];
UIImageView *imageView2 = [[[UIImageView alloc] init] autorelease];
imageView2.alpha = 0;
[cell.accessoryView addSubview:imageView1];
[cell.accessoryView addSubview:imageView2];

我已将.zip文件添加到我的资源中如何访问该zip文件？

我想更改字体类型和大小UITableView.例如,我如何将其设置为Tahoma？

我想保存NSMutableArray或NSDictionary作为永久文件.然后,我想稍后重新打开该文件.

这可能吗？如果是这样,我该怎么办？

UISlider的值当前显示为浮点数.如何将其显示为整数？

sliderCtl = [[UISlider alloc] initWithFrame:frame];
    sliderCtl.minimumValue = 1;
    sliderCtl.maximumValue = 15;
    sliderCtl.continuous = NO;
    sliderCtl.value = 1;
    [sliderCtl setShowValue:YES];

我只知道崩溃不会耗尽内存.

我怎么知道它导致错误的原因？

Incident Identifier: 242C320A-763C-407E-BD40-443E3E9B611C
CrashReporter Key:   307097bc0924dac79e5352eb10692943c0ef05ad
Process:         AsianDelight [4894]
Path:            /var/mobile/Applications/7A8FF881-A033-45B9-8F72-8478217821E9/AsianDelight.app/AsianDelight
Identifier:      AsianDelight
Version:         ??? (???)
Code Type:       ARM (Native)
Parent Process:  launchd [1]

Date/Time:       2010-01-20 16:32:49.285 +0700
OS Version:      iPhone OS 3.1.2 (7D11)
Report Version:  104

Exception Type:  EXC_BAD_ACCESS (SIGBUS)
Exception Codes: KERN_PROTECTION_FAILURE at 0x00000000
Crashed Thread:  0

Thread 0 Crashed:
0   libobjc.A.dylib                 0x00007532 realizeClass + 18
1   libobjc.A.dylib                 0x00007578 realizeClass + 88
2   libobjc.A.dylib                 0x00007578 realizeClass + 88
3   libobjc.A.dylib                 0x00007e76 prepareForMethodLookup + 26
4   libobjc.A.dylib …