无法在Android Studio中设置断点

有时候在android studio中设置了断点，但是当链接设备后，看到的却是一个带x的断点，

此时链接上手机，也是没法停在断点的，根据断点失败的提示：

Warning: No executable code found at line 482 in class com.xx.xx.

解决：

StackOverflow上有一篇解释，Cannot set Java breakpoint in Intellij IDEA

1.If you are using Maven dependencies, go to Maven Projects -> refresh

2.If that does not work, Try top menu --> Build --> Rebuild Project

3.If that still doesn't work, try top menu --> File --> Invalidate Cache/Restart

4.If that still doesn't work, then $CATALINA_BASE/bin/catalina.sh stop, then start

2和3两个步骤可以解决问题，其他两个应该Maven和Tomcat的，可以忽略

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