1、权限

<uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"/>

2、代码

public void setPhoneMusic()
{ //设置当前文件存放音乐为手机铃声
Intent intent = new Intent(RingtoneManager.ACTION_RINGTONE_PICKER); //打开系统铃声设置
intent.putExtra(RingtoneManager.EXTRA_RINGTONE_TYPE,RingtoneManager.TYPE_RINGTONE);
intent.putExtra(RingtoneManager.EXTRA_RINGTONE_TITLE, "设置来电铃声"); //设置显示的标题
startActivityForResult(intent, RINGTONE_PICKED); //跳转界面，显示铃声设置对话框
}


public void onActivityResult(int requestCode,int resultCode,Intent data)
{ //界面跳转方法
super.onActivityResult(requestCode, resultCode, data);
if(resultCode!=RESULT_OK)
{
return;
}
switch(requestCode)
{ //switch判断
case RINGTONE_PICKED: //开启手机铃声
try
{
Uri pickedUri=data.getParcelableExtra(RingtoneManager.EXTRA_RINGTONE_PICKED_URI);
if(pickedUri!=null)
{
RingtoneManager.setActualDefaultRingtoneUri
( //设置铃声链接
Sample8_11_Activity.this,
RingtoneManager.TYPE_RINGTONE,
pickedUri
);
}
}
catch(Exception e)
{
e.printStackTrace(); //异常处理
}
break;
}
}
}