diff --git a/20. 專注/Android/ADB.md b/20. 專注/Android/ADB.md
index 34c093c..6b073a3 100644
--- a/20. 專注/Android/ADB.md	
+++ b/20. 專注/Android/ADB.md	
@@ -64,4 +64,10 @@ adb reverse tcp:8081 tcp:8080
 * [adb命令-adb reverse的研究-有解無憂](https://www.uj5u.com/qita/277742.html)
 
 ## Logcat
-- Enlarge logcat buffer to 16M: `adb logcat -G 16M`
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+- Enlarge logcat buffer to 16M: `adb logcat -G 16M`
+
+## Get foreground activity
+#android #foreground #activity
+```
+adb shell "dumpsys activity activities | grep ResumedActivity"
+```
\ No newline at end of file