Last Updated: October 20, 2016

Tips & tricks android developer should know - part 3

Description: In this post I'm gonna demonstrate some useful tips which we could come handy in our app development life cycle

Also check out Part 1 and Part 2.

So let 's get started.

1. Grant all permissions at once in Marshmallow and above.  

As we know marshmallow compatible apps require permissions. So we normally show permission dialog to the user asking to grant us. That's fine. But every time clicking that 'allow' feels annoying for developers.

So the idea is to allow all the permissions at once without every time clicking the allow button.

Below  shell script will help to make it happen flawlessly.

#add your package_name

#create array with all the permission you need to enabled    

#lets exceute our command
for permissions in $PKG_ARRAY; 
 echo $permissions + ' granted'
 adb shell pm grant $PACKAGE $permissions

echo 'Bingo its done'
$ sh
android.permission.CALL_PHONE +  granted
android.permission.GET_ACCOUNTS +  granted
android.permission.READ_SMS +  granted
android.permission.READ_CONTACTS +  granted
android.permission.ACCESS_FINE_LOCATION +  granted
android.permission.CAMERA +  granted
android.permission.WRITE_EXTERNAL_STORAGE +  granted
Bingo its done'



2. Battery Historian

Battery historian translate the battery stats into visualization form thereby helping us to figure out whats the cause and how we can optimized our battery usage.

1. 'adb' is configured
2. Devices is detectable using 'adb devices' command
3. Python(2.7)  is install and path is set.

Step 1: Reset the battery stats to fetch fresh info using below
adb shell dumpsys batterystats --reset

Note: Disconnect phone and explore the app for few minutes and connect again

Step 2: Capture 'batterystats' using below command
adb shell dumpsys batterystats > batterystats.txt

Note: The command creates a file name 'batterystats.txt' into the current directory

Step 3: Clone or download the Github repo of 'Battery Historian' from Here. You will find a python script at path '../battery-historian/scripts/'

Note: You can keep both '' and 'batterystats.txt' in the same folder for ease

Step 4: Finally let execute the python script against our 'batterstats.txt' as input as show below
python batterystats.txt > batterystats.html
This will create 'battertstats.html' fig.1 which we can use to analyse the battery usage as shown HERE.



  1. Really it was an awesome article… very interesting to read…

    hotmail signup process

    1. Great Article android based projects

      Java Training in Chennai Project Center in Chennai Java Training in Chennai projects for cse The Angular Training covers a wide range of topics including Components, Angular Directives, Angular Services, Pipes, security fundamentals, Routing, and Angular programmability. The new Angular TRaining will lay the foundation you need to specialise in Single Page Application developer. Angular Training Project Centers in Chennai

  2. All that is gold doesn't necessarily have to glitter. Android has been touted as being one of the next big platforms that would knock iPhone of its throne. However, this doesn't seem to be the situation for Android. gerald winata gozali

  3. To discover explicit things or aides for the repair of your portable living arrangement, simply look for your topic on the web. Iphone reparatur

  4. Hi Very Nice Blog I Have Read Your Post it is very Informative and Useful Thanks For Posting and Sharing with us & Your Writing Style is very Nice
    Handy Reparatur

  5. This is very interesting. thanks for that. we need more sites like this. i commend you on your great content and excellent topic choices. mobile app development

  6. thank you for sharing this information with us I am glad to be here and read this information is really very helpful for me

    Skytorrent proxy List
    Worldwidetorrent proxy
    Kickasstorrent proxy
    torrenthoud proxy

  7. I think this is an informative post and it is very useful and knowledgeable. Really its Great Article . A Marketplace local Delivery driver App for woocommerce, Dokan, WCFM, WC vendor etc.

    WCFM driver APP

  8. Very useful Post. I found so many interesting stuff in your Blog especially its discussion. Hire Android developer to build a robust and scalable app suited to your business requirements at the best price.

    hire android developer

  9. Nice to be visiting your blog again, it has been months for me. Well this article that i've been waited for so long. I need this article to complete my assignment in the college, and it has same topic with your article. Thanks, great share. Best Coding Android Wallpapers

  10. Only strive to mention one's content can be as incredible. This clarity with your post is superb! Thanks a lot, hundreds of along with you should go on the pleasurable get the job done. IoT hidden menu


Your comments are valuable for us !!!