Android Dynamically Change Style colors

In this Tutorial I will discuss How to Change Android Style theme colors. Last few days I had to I have searched how to change android theme style color dynamically but android doesn't support to change theme colors dynamically. (Note :You can changed android pre-defined theme styles dynamically not the dynamic generated themes)

If we using Theme.AppCompat.Light.DarkActionBar then these are the main properties in layout.

If You want to change theme what you did was change the primary color and primaryDark color. And this code helps you to dynamically change the theme (above mention colors) colors.

This is for change primary Dark color.

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public static void setStatusBarColor(String color) { if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) { Window window = currentActivity.getWindow(); int statusBarColor = Color.parseColor(color); if (statusBarColor == Color.BLACK && window.getNavigationBarColor() == Color.BLACK) { window.clearFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS); } else { window.addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS); } window.setStatusBarColor(statusBarColor); } }

This is for change primary color

1 2	getSupportActionBar().setBackgroundDrawable( new ColorDrawable(Color.parseColor("#AA3939")));

I hope this article help you to resolve your problem.
Thanks

Linux Interactive Shell Scripting

Last week i saw interactive shell running in the juju-quickstart . It is really cool.So i search about interactive shell scripting techniques available in Linux.So i found one of the famous method is "Whiptail" . Basically these scripting used for displaying dialog boxes which used to get user Inputs.So I have created Sample Interactive shell Scripting using dialog boxes.

First Screen Start with Menus.

This is the confirm box with yes / no option.

 This is the Password box. In this script i have put another Input box.

This is the Progress bar in "whiptail".Here i will put the bash script file.

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#!/bin/bash # Whiptail is the interactive shell Scrpting OPTION=$(whiptail --title "Whiptail Shell Script Menu" --menu "Choose your option" 15 60 4 \ "1" "Change Password" \ "2" "Change UserName" \ "3" "Change Email" \ "4" "exit" 3>&1 1>&2 2>&3) exitstatus=$? if [ $exitstatus = 0 ]; then echo "Your chosen option:" $OPTION case $OPTION in 1) echo "Option1 Selected" if (whiptail --title "Change Password" --yes-button "Yes" --no-button "No" --yesno "Do you need to changed Password ?" 10 60) then echo "password Selection Yes$?." # Start Password Box PASSWORD=$(whiptail --passwordbox "please enter your secret password" 8 78 --title "Change Password" 3>&1 1>&2 2>&3) # A trick to swap stdout and stderr. # Again, you can pack this inside if, but it seems really long for some 80-col terminal users. exitstatus=$? if [ $exitstatus = 0 ]; then echo "User selected Ok and entered " $PASSWORD touch sample_out_put.txt echo $PASSWORD > sample_out_put.txt # Start Progress Bar { for ((i = 0 ; i <= 100 ; i+=5)); do sleep 0.3 echo $i done } | whiptail --gauge "Password Updating.." 6 50 0 # End Progress Bar else echo "User selected Cancel." fi # End Password Box else echo "Password Selection No$?." fi ;; 2) echo "option2 Selected" # Change User Name Box NAME=$(whiptail --inputbox "Change Username " 8 78 --title "Changed UserName" 3>&1 1>&2 2>&3) exitstatus=$? if [ $exitstatus = 0 ]; then echo "UserName Changed " $NAME if (whiptail --title "Confirm Change UserName" --yes-button "Yes" --no-button "No" --yesno "Do you need to changed UserName ?" 10 60) then echo "Username Confirm Yes$?." # Start Progress Bar { for ((i = 0 ; i <= 100 ; i+=5)); do sleep 0.3 echo $i done } | whiptail --gauge "UserName Updating.." 6 50 0 # End Progress Bar else echo"Confirm Failed" fi else echo "UserName Not Changed" fi ;; 3) echo "Option3 Selected" ;; 4) echo "exit" { for ((i = 0 ; i <= 100 ; i+=5)); do sleep 0.1 echo $i done } | whiptail --gauge "exit..." 6 50 0 esac else echo "You chose Cancel." fi

And Happy Coding....