title: AirPlay
date: 2016-07-16
tags: AirPlay,AirPlay設(shè)備自動(dòng)選擇
博客地址

AirPlay

需求:繞過系統(tǒng)限制，自動(dòng)選擇支持AirPlay的設(shè)備

Airplay基礎(chǔ)知識(shí)

要調(diào)用出AirPlay列表需要使用到MPVolumeView控件，當(dāng)系統(tǒng)檢測(cè)到網(wǎng)絡(luò)環(huán)境中有支持AirPlay的設(shè)備時(shí)才會(huì)出現(xiàn)AirPlay圖標(biāo),用戶點(diǎn)擊這個(gè)圖標(biāo)，呼出支持AirPlay的設(shè)備列表。
MPVolumeView *volumView = [[MPVolumeView alloc] initWithFrame:CGRectMake(60, 100, 40, 40)];
[volumView setRouteButtonImage:[UIImage imageNamed:@"pic-02"] forState:UIControlStateNormal];
volumView.showsVolumeSlider = NO;
setRouteButtonImage自定義AirPlay圖標(biāo)

自動(dòng)選擇AirPlay設(shè)備

自動(dòng)選擇AirPlay設(shè)備要使用了MediaPlayer.framework的私用類MPAVRoutingController，在這里可以搜到iOS所有的framework的頭文件。

Class MPAVRoutingController = NSClassFromString(@"MPAVRoutingController");
self.routerController = [[MPAVRoutingController alloc] init];
[self.routerController setValue:self forKey:@"delegate"];
[self.routerController setValue:[NSNumber numberWithLong:2] forKey:@"discoveryMode"];

NSClassFromString獲取MPAVRoutingController類定義，并通過KVC給它的屬性賦值,discoveryMode為2時(shí)才能及時(shí)在AirPlay設(shè)備發(fā)生變化時(shí)觸發(fā)它協(xié)議的-(void)routingControllerAvailableRoutesDidChange:(id)arg1;方法

-(void)routingControllerAvailableRoutesDidChange:(id)arg1{
    if (self.deviceName == nil) {
        return;
    }
    NSArray *availableRoutes = [self.routerController valueForKey:@"availableRoutes"];
    for (id router in availableRoutes) {
        NSString *routerName = [router valueForKey:@"routeName"];
        if ([routerName rangeOfString:self.deviceName].length >0) {
            BOOL picked = [[router valueForKey:@"picked"] boolValue];
            if (picked == NO) {
                [self.routerController performSelector:@selector(pickRoute:) withObject:router];
            }
            return;
        }
    }
}

在MPAVRoutingControllerDelegate的routingControllerAvailableRoutesDidChange用代碼來選擇用戶指定的AirPlay設(shè)備，如果用戶想取消自動(dòng)選擇的功能，將deviceName屬性賦值為nil即可。