CODEWITHSUNDEEP
androidscreen-orientation
MePo
MePo

Reputation: 1074

Android keep Orientation from app Start

Is it somehow possible to set the orientation of the app depending on which orientation was used when the app was started?

Example

By that i mean lets say user started my app in Landscape. O would like it to save that state and dont let the user change the orientation by turrning the phone ( I want to lock it, until user re-runs application and from there app agains checks if the user started it in landscape or portrait )

CODE (so far)

Configuration newConfig = getResources().getConfiguration();
  if (newConfig.orientation == Configuration.ORIENTATION_LANDSCAPE) {
             Toast.makeText(this, "landscape", Toast.LENGTH_SHORT).show();
             // set background for landscape through app
     } else if (newConfig.orientation == Configuration.ORIENTATION_PORTRAIT) {

    Toast.makeText(this, "portrait", Toast.LENGTH_SHORT).show();
           // set background for portrait through app
  }

This was something i found here on SO. Could i do it like this? Put this in my first activity and then use the orientation state from here for the rest of the activites.

Upvotes: 0

Views: 140

Answers (2)

David Seroussi
David Seroussi

Reputation: 1710

You can use SharedPreferences to store a value that will be saved even if the app is closed.
Just make a class SaveOrientation :

public class SaveOrientation {

    static final String ORIENTATION = "orientation";

    static SharedPreferences getSharedPreferences(Context ctx) {
        return PreferenceManager.getDefaultSharedPreferences(ctx);
    }

    // value will be between 0 and 1
    public static void setOrientation(Context ctx, int value) {
        SharedPreferences.Editor editor = getSharedPreferences(ctx).edit();
        editor.putInt(ORIENTATION, value);
        editor.commit();
    }

    public static String getOrientation(Context ctx) {
        return getSharedPreferences(ctx).getString(ORIENTATION, "");
    }

}

And then in your MainActivity : 

int portrait = 0;
int landscape = 1;
.
.
.
// in your onCreate :
Configuration newConfig = getResources().getConfiguration();
if (newConfig.orientation == Configuration.ORIENTATION_LANDSCAPE) {
         SaveOrientation.setOrientation(this,portrait);
 }else if (newConfig.orientation == Configuration.ORIENTATION_PORTRAIT) {
         SaveOrientation.setOrientation(this,landscape);
}
applyOrientation();
.
.
.
// method applyOrientation
private void applyOrientation(){
   int orientation = SaveOrientation.getOrientation(this);

   if(orientation == portrait){
     this.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);

   }else if (orientation == landscape){
     this.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
}

Upvotes: 2

Burak Cakir
Burak Cakir

Reputation: 928

You can implement it by using ActivityInfo class.

ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE

setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);

ActivityInfo.SCREEN_ORIENTATION_PORTRAIT

setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);

Check ActivityInfo here 

Button buttonSetPortrait = (Button)findViewById(R.id.setPortrait);
Button buttonSetLandscape = (Button)findViewById(R.id.setLandscape);

buttonSetPortrait.setOnClickListener(new Button.OnClickListener(){

   @Override
   public void onClick(View arg0) {
        setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
   }

});

buttonSetLandscape.setOnClickListener(new Button.OnClickListener(){

   @Override
   public void onClick(View arg0) {
        setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
   }

});

http://android-er.blogspot.in/2011/08/set-screen-orientation-programmatically.html

In case anyone would like to obtain meaningful orientation description (like that passed to onConfigurationChanged(..) with those reverseLandscape, sensorLandscape and so on), simply use getRequestedOrientation()

Upvotes: 1

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