While i try to launch app via adb i am getting below exception
java.lang.SecurityException: Permission Denial: starting Intent
CMD used : adb shell am start -n pakage/mainactivity name
Make sure that the activity you are launching has the right intent action and category. For example:
<category android:name="android.intent.category.LAUNCHER" />
<action android:name="android.intent.action.MAIN" />
Check the android docs for more info:
https://developer.android.com/guide/topics/manifest/manifest-intro
https://developer.android.com/reference/android/content/Intent
There's also this very similar question with more details on android manifests:
Android - java.lang.SecurityException: Permission Denial: starting Intent