Script for killing Android app (as system would)

appkill.sh

#!/bin/bash

# Provide package of your application (com.example.myapp)
PACKAGE=$1

# First, put your app to background and then run this script

echo "Killing $PACKAGE"

adb shell ps | grep $PACKAGE | awk '{print $2}' | xargs adb shell run-as $PACKAGE kill

1. put your app to background
2. run this script with proper app package
3. reopen the app