我有一个Alarm类,可以按时播放默认的警报音.我想播放警报音,一次将音量从最小调到最大.我如何逐渐将音量从最小增加到最大.是否有示例代码或项目的链接.请帮我
解决方法:
您可以自己做.没什么复杂的.
触发PendingIntent后,请使用处理程序来进行增加.
>创建将以AudioManager或应用程序上下文作为参数的类.
public class VolumeRunnable implements Runnable{private AudioManager mAudioManager;private Handler mHandlerThatwillIncreaseVolume;private final static int DELAY_UNTILL_NEXT_INCREASE = 30*1000;//30 seconds between each incrementVolumeRunnable(AudioManager audioManager, Handler handler){ this.mAudioManager = audioManager; this.mHandlerThatwillIncreaseVolume = handler;}@OverrIDepublic voID run(){ int currentAlarmVolume = mAudioManager.getStreamVolume(AudioManager.STREAM_ALARM); if(currentAlarmVolume != mAudioManager.getStreamMaxVolume(AudioManager.STREAM_ALARM)){ //if we havent reached the max //here increase the volume of the alarm stream by adding currentAlarmVolume+someNewFactor mHandlerThatwillIncreaseVolume.postDelayed(this,DELAY_UNTILL_NEXT_INCREASE); //"recursively call this runnable again with some delay between each increment of the volume, untill the condition above is satisfIEd. }}
}
>触发PendingIntent后,调用此Runnable:
someHandler.post(new VolumeRunnable(mAudioManager, someHandler));
我希望这能给您想法.原谅任何错误或错别字.
总结以上是内存溢出为你收集整理的Android闹钟音量逐渐增加全部内容,希望文章能够帮你解决Android闹钟音量逐渐增加所遇到的程序开发问题。
如果觉得内存溢出网站内容还不错,欢迎将内存溢出网站推荐给程序员好友。
欢迎分享,转载请注明来源:内存溢出
评论列表(0条)