Question

我从Apple文档http://developer.apple.com/library/ios/#documentation/AudioVideo/Conceptual/MultimediaPG/UsingAudio/UsingAudio.html#//apple_ref/doc/uid/TP40009767-CH2-SW6

中读到了有关AVaudioRecorder的内容

我发现了一个记录声音的功能。但是我的代码崩溃了

[soundRecorder prepareToRecord];

我用Google搜索了这么多。但我找不到任何解决方案。我还发现了一些其他的源代码。但是他们也遇到了同样的问题（崩溃在prepareToRecord）。任何人都可以帮助我...

野兔是我的IBAction

- (IBAction) recordOrStop: (id) sender {

if (recording) {

    [soundRecorder stop];
    recording = NO;
    self.soundRecorder = nil;

    [recordOrStopButton setTitle: @"Record" forState:
     UIControlStateNormal];
    [recordOrStopButton setTitle: @"Record" forState:
     UIControlStateHighlighted];
    [[AVAudioSession sharedInstance] setActive: NO error: nil];

} else {

    [[AVAudioSession sharedInstance]
     setCategory: AVAudioSessionCategoryRecord
     error: nil];

    NSDictionary *recordSettings =
    [[NSDictionary alloc] initWithObjectsAndKeys:
     [NSNumber numberWithFloat: 44100.0], AVSampleRateKey,
     [NSNumber numberWithInt: kAudioFormatAppleLossless], AVFormatIDKey,
     [NSNumber numberWithInt: 1], AVNumberOfChannelsKey,
     [NSNumber numberWithInt: AVAudioQualityMax],
     AVEncoderAudioQualityKey,
     nil];
    AVAudioRecorder *newRecorder =
    [[AVAudioRecorder alloc] initWithURL: soundFileURL
                                settings: recordSettings
                                   error: nil];



    self.soundRecorder = newRecorder;

    soundRecorder.delegate = self;
    [soundRecorder prepareToRecord];
    [soundRecorder record];
    [recordOrStopButton setTitle: @"Stop" forState: UIControlStateNormal];
    [recordOrStopButton setTitle: @"Stop" forState: UIControlStateHighlighted];

    recording = YES;
}

}

我的.h文件

#import <UIKit/UIKit.h>
#import <AVFoundation/AVFoundation.h>
#import <CoreAudio/CoreAudioTypes.h>
#import "MBProgressHUD.h"

@interface LyricsController : UIViewController<AVAudioSessionDelegate,AVAudioRecorderDelegate, MBProgressHUDDelegate>{

IBOutlet UITextView *LyricsView;
MBProgressHUD *HUD;
AVAudioRecorder * soundRecorder;
NSURL *soundFileURL;  

BOOL recording;
BOOL playing;

__weak IBOutlet UIButton *recordOrStopButton;
}@property(strong,nonatomic)NSURL *soundFileURL;
@property(nonatomic,strong)AVAudioRecorder * soundRecorder;

Answer 1

这只是因为你使用了断点。我遇到了同样的问题，我的代码没有崩溃但它在prepareTorecord作为断点停止，因为即使我没有在它上面放置任何断点。如果禁用xcode的断点，它也将在模拟器上运行。

Answer 2

引自this answer：

添加您的异常断点并从＆＃34; All＆＃34;编辑异常类型。 to＆＃34; Objective-C例外＆＃34; AudioToolbox中的某些类会抛出常规的C ++异常。您可以通过这种方式过滤它们。

至于原因：

＆＃34; AVAudioPlayer不应该抛出随机异常＆＃34; - 这不在我们手中。这就是框架编写的方式，你必须忍受它。虽然，我同意这不是一个好主意

prepareToRecord崩溃

2 个答案: