iOS SDK ::振动并发出哔哔声.

Question

我需要振动iOS设备,不支持振动的设备,会发出哔哔声.

为此,我正在使用

Import AudioToolbox.framework
#import <AudioToolbox/AudioToolbox.h>

AudioServicesPlayAlertSound(kSystemSoundID_Vibrate);

它在iPhone设备上振动,但在iPad和iPod上没有声音.虽然refrences说它会播放声音.我做错了什么？

让iPhone振动

http://blog.mugunthkumar.com/coding/iphone-tutorial-better-way-to-check-capabilities-of-ios-devices/

Answer 1

尝试设置 AudioSession：

#import <AudioToolbox/AudioToolbox.h>

AVAudioSession *audioSession = [AVAudioSession sharedInstance];
NSError *err = nil;         
[audioSession setCategory: AVAudioSessionCategoryPlayback  error:&err];
AudioServicesPlayAlertSound(kSystemSoundID_Vibrate);         
//or: AudioServicesPlaySystemSound(kSystemSoundID_Vibrate);