我用下面的代碼,以檢查是否靜音模式時,它按預期工作在iPhone上,但無論在iPad上它都會返回揚聲器。
CFStringRef state;
UInt32 propertySize = sizeof(CFStringRef);
AudioSessionInitialize(NULL, NULL, NULL, NULL);
AudioSessionGetProperty(kAudioSessionProperty_AudioRoute, &propertySize, &state);
if (CFStringGetLength(state) == 0) {
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Silent mode"
message:@"Please turn sound on"
delegate:self cancelButtonTitle:@"Ok"
otherButtonTitles:nil];
[alert show];
[alert release];
}
任何想法如何修改它以通用?
感謝
丹。