This is the code inside of my MainActivity.java: I am trying to use a toggle button to toggle a menu item to be on and off. The menu item when checked sets the background to red. When the item is not selected the background color is default. I am new to java so I am unsure what to put in the if and else statement under This is the code inside of my MainActivity.java
阅读背景：
使用切换按钮启动和停止菜单项
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