how to clear data and chach in app using code

Question

Hello I have an app that I'm developing and I want to clear all of its data when its getting close. I don't mind if it will need to add permission or something like this. also I need it will clear all of my shared preferences.

What kind of other data are you talking about beside shared preferences? — Edward van Raak, Mar 29 '13 at 13:57
Both are same. First will clear data when apps closed. and other when you want for some your activity like as button click and data will clear. :) — Rahul Rawat, Mar 29 '13 at 14:00

Rahul Rawat · Accepted Answer · 2013-03-29T14:08:18.957

1

you can use this code for delete all data from sharedpreferences.

this is for clear data when apps close:-

 @Override
public void onDestroy() {
super.onDestroy(); 
SharedPreferences preferences = getSharedPreferences("your prefre name", 0);
 preferences.edit().clear().commit();
}

this is when you want to clear all data by any your activity like as button clicked:-

    SharedPreferences preferences = getSharedPreferences("your prefre name", 0);
    preferences.edit().clear().commit();

it should solve your query.

edited Mar 29 '13 at 14:08

answered Mar 29 '13 at 13:54

Rahul Rawat

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I tried the code you sent to me and it didn't work could you explain more about what each part do and if it will clear all of my data i have saved on it or only part of it? – dorbt12 Mar 29 '13 at 14:16

score 0 · Answer 2 · answered Mar 29 '13 at 13:53

0

You can clear the shared preferences like this.

SharedPreferences preferences = getSharedPreferences("yourpref", 0);
preferences.edit().clear().commit();

answered Mar 29 '13 at 13:53

Edward van Raak

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Yes, just make sure you change "yourpref" to the name that you gave your shared preferences. – Edward van Raak Mar 29 '13 at 14:19
No you don't need to add permissions for this. The first parameter should be the string of the shared preferences. How did you call your shared preferences? What is the name? – Edward van Raak Mar 30 '13 at 12:51
Post what you did...show exactly how you are adding the shared preferences. – Edward van Raak Mar 30 '13 at 13:27

how to clear data and chach in app using code

2 Answers2