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+## Showcases
+- Broadcast Receivers
+    - Airplane mode
+    - Battery level
+- Content Providers
+    - User contacts
+- Intents
+    - Explicit Activity starting
+    - Implicit select and show image
+    - Implicit send email
+- Services
+    - Start and stop service
+    - Send data
+
+#### Features to add
+- WorkManager