CODEWITHSUNDEEP
android
Ata
Ata

Reputation: 12544

onCreate and Initialization in Android

My application should load some data when it start at first time, but it should do not load again when it resumes, when I do that loading on onCreate methods, if user changes orientation, that process do again, I do not want this, I need to run loading only once, is there any way to fix it?

Upvotes: 2

Views: 2018

Answers (3)

Nitin4Android
Nitin4Android

Reputation: 864

It's really simple! Just put:

android:configChanges="keyboardHidden|orientation"

in the AndroidManifest.xml file inside activity tag in which you require such functionality.

Example:

<activity
    android:name=".MyActivity"
    android:configChanges="keyboardHidden|orientation"
    android:label="Test"
    android:windowSoftInputMode="stateHidden" >
</activity>

Upvotes: 0

Manju
Manju

Reputation: 742

When a configuration change occurs at runtime, the activity is shut down and restarted by default, but declaring a configuration with this attribute (android:configChanges) will prevent the activity from being restarted. In your case, the value for this property is android:configChanges="orientation"

Upvotes: 0

aroth
aroth

Reputation: 54806

Just set some flag when you load the data, and only load the data when the flag is not set. For instance:

SharedPreferences preferences = getPreferences(MODE_PRIVATE);  

if (! preferences.getBoolean("dataLoaded")) {
    loadData();

    SharedPreferences.Editor editor = preferences.edit();
    editor.putBoolean("dataLoaded", true);
    editor.commit();
}

This will ensure that the data is only loaded once per install. If you want to load the data once per application instance/run, then the solution is even simpler. In that case, you could just have a public static flag somewhere instead of using SharedPreferences.

Upvotes: 2

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