IOS开发/iphone开发震动与播放声音Demo

可能在软件某些时候需要震动手机以示提醒,可能还要播放一段特殊的声音引起用户的注意,在ios中如何实现呢?

首先实现震动,其实就是调用系统的方法,一句话就行,AudioServicesPlaySystemSound (kSystemSoundID_Vibrate);当然前提是要加入AVFoundation.framework这个框架

然后实现播放声音,可能还要循环播放多少次,循环播放用n次,[self.player setNumberOfLoops:n];

因为我播放的声音是mp3,是用AudioToolbox框架,需要加入这个框架

代码如下

ViewController.h文件

#import
#import
#import

@interface ViewController : UIViewController{
    AVAudioPlayer *player;
}
@property (retain) AVAudioPlayer *player;
@end

ViewController.m文件

#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController
@synthesize player;
- (BOOL) prepAudio
{
    NSError *error;
    NSString *path = [[NSBundle mainBundle] pathForResource:@"loop" ofType:@"mp3"];
    if (![[NSFileManager defaultManager] fileExistsAtPath:path]) return NO;
    self.player = [[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:path] error:&error];
    if (!self.player)
    {
        NSLog(@"Error: %@", [error localizedDescription]);
        return NO;
    }
    [self.player prepareToPlay];
    [self.player setNumberOfLoops:1];
    return YES;
}
- (void)viewDidLoad
{
    [self prepAudio];
    [self.player play];
    AudioServicesPlaySystemSound (kSystemSoundID_Vibrate);
}
@end


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