Use '$' instead of '.' for inner classes (or use only lowercase letters in package names)   AndroidManifest.xml

我在这个link找到了一些信息.

"When you reference an inner class in a manifest file,you must use '$' instead of '.' " +
    "as the separator character,e.g. Outer$Inner instead of Outer.Inner.\n" +
    "\n" +
    "(If you get this warning for a class which is not actually an inner class,it's " +
    "because you are using uppercase characters in your package name,which is not " +
    "conventional.)"

我相信我使用像com.abc.app.Promotion这样的子包名称中的大写字符.

问题是：在manifest.xml中摆脱这个警告的最好办法是什么？它仍然可以建立和运行,但我觉得这么烦人.

我尝试使用refactor来重命名包,并修改了manifest.xml android：name =“com.abc.app.promotion.Promotion”,但是得到了这个错误：

java.lang.RuntimeException: Unable to start activity ComponentInfo{com.abc.app/com.abc.app.TabView}: android.content.ActivityNotFoundException: Unable to find explicit activity class {com.abc.app/com.abc.app.promotion.Promotion}; have you declared this activity in your AndroidManifest.xml?

感谢您的帮助！

编辑：
原始manifest.xml

<activity android:name=".Promotion.Promotion" ></activity>

更新了manifest.xml

<activity android:name="promotion.Promotion" ></activity>