ios7-录音权限访问-AVAudioSession

///新增api,获取录音权限. 返回值,YES为无拒绝,NO为拒绝录音.

- (BOOL)canRecord
{
    __block BOOL bCanRecord = YES;
    if ([[[UIDevice currentDevice] systemVersion] compare:@"7.0"] != NSOrderedAscending)
    {
        AVAudioSession *audioSession = [AVAudioSession sharedInstance];
        if ([audioSession respondsToSelector:@selector(requestRecordPermission:)]) {
            [audioSession performSelector:@selector(requestRecordPermission:) withObject:^(BOOL granted) {
                if (granted) {
                    bCanRecord = YES;
                } else {
                    bCanRecord = NO;
                }
            }];
        }
    }
    
    return bCanRecord;
}

#pragma mark - Audio Recorder √

/*开始录音*/
- (void)startToRecord:(id)sender
{
    if (![self canRecord]) {
        [[[UIAlertView alloc] initWithTitle:nil
                                    message:[NSString stringWithFormat:@"%@需要访问您的麦克风。\n请启用麦克风-设置/隐私/麦克风", [TIXAAppMonitor sharedMonitor].appName]
                                   delegate:nil
                          cancelButtonTitle:@"好"
                          otherButtonTitles:nil] show];
        return;
    }
}