How to store color value in SharedMemory?

Question

I am writing a simple program which involves color changing of certain elements. For color changing, I have to store the color value (which I get from the color picker) in the SharedMemory. I have the following color picker code:

public class MainActivity extends Activity implements OnColorChangedListener {

    private ColorPicker picker;
    private SVBar svBar;
    private OpacityBar opacityBar;
    private Button button;
    private TextView text;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        picker = (ColorPicker) findViewById(R.id.picker);
        svBar = (SVBar) findViewById(R.id.svbar);
        opacityBar = (OpacityBar) findViewById(R.id.opacitybar);
        button = (Button) findViewById(R.id.button1);
        text = (TextView) findViewById(R.id.textView1);

        picker.addSVBar(svBar);
        picker.addOpacityBar(opacityBar);
        picker.setOnColorChangedListener(this);

        button.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                Log.v("Color",""+ picker.getColor());
                text.setTextColor(picker.getColor());
                picker.setOldCenterColor(picker.getColor());
            }
        });
    }

    @Override
    public void onColorChanged(int color) {
        //gives the color when it's changed.
    }
}

How can I store the value of picker.getColor() in the SharedMemory?

you have to set text color like. after getting int value from shared preference you just need to use yourTextView.setTextColor(color); — Piyush, May 02 '14 at 07:00
Yes..But I am not getting the code...I am trying Utils.readPreferences(MainActivity.this, "colorKey", 0) But how to change the value using it ? — Miss Noob, May 02 '14 at 07:19
let us [continue this discussion in chat](http://chat.stackoverflow.com/rooms/51864/discussion-between-piyush-gupta-and-miss-noob) — Piyush, May 02 '14 at 07:23

score 1 · Answer 1 · answered May 02 '14 at 06:21

@Override 
public void onColorChanged(int color) {
    SharedPreferences sharedPref = getActivity().getPreferences(Context.MODE_PRIVATE);
    SharedPreferences.Editor editor = sharedPref.edit();
    editor.putInt(getString(R.string.mycolor), color);
    editor.commit();
}

To get the stored color from Shared Preference use this

  SharedPreferences sharedPref = getActivity().getPreferences(Context.MODE_PRIVATE);
  int storedColor = sharedPref.getInt(getString(R.string.mycolor), 0);

score 1 · Answer 2 · edited May 23 '17 at 12:30

User SharedPreference to store your color value.

Shared preference is place where you can store data that persist till the time app exists on device and if user does not clear the app memory through settings.

If you want to store array of colors,refer this post: https://stackoverflow.com/a/12350878/2035885

If just a single value needs to be stored, refer below:

public static int getColor(Context context)
{
SharedPreferences sharedPreference = context.getSharedPreferences("your_shared_preference_name",Context.MODE_PRIVATE);
return sharedPreference.getInt("key_to_use_to_set_and_retrieve_value", 0);
}


public static void setColor(Context context,int color)
{
SharedPreferences store = context.getSharedPreferences(MenuActivity.class.getSimpleName(),Context.MODE_PRIVATE);
SharedPreferences.Editor edit = store.edit();
edit.putInt("key_to_use_to_set_and_retrieve_value", color);
edit.commit();
}

score 0 · Answer 3 · answered May 02 '14 at 06:12

0

Store it as an int. That's already what it is.

@Override 
public void onColorChanged(int color) {
    // omitted: get a SharedPreferences object first
    sharedPreferences.edit().putInt("color", color).apply();
}

answered May 02 '14 at 06:12

Karakuri

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score 0 · Answer 4 · answered May 02 '14 at 06:18

// try this way,hope this will help you...

//Set To SharedPreferences
  SharedPreferences sharedPreferences = getSharedPreferences("yourSharePreferenceName", MODE_PRIVATE);
  SharedPreferences.Editor editor = sharedPreferences.edit();
  editor.putInt("pickerColor",picker.getColor() );
  editor.commit();

//Get From SharedPreferences
  SharedPreferences sharedPreferences = getSharedPreferences("yourSharePreferenceName", MODE_PRIVATE);
  picker.setOldCenterColor(sharedPreferences.getInt("pickerColor",0));

Jitesh Upadhyay · Answer 5 · 2014-05-02T06:29:44.237

java was follows

package com.example.sharedpreferenceexample;

import android.app.Activity;
import android.content.Context;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.preference.PreferenceManager;

public class Utils {

    public static void savePreferences(Activity activity, String key1,
            int value1) {
        SharedPreferences sp = PreferenceManager
                .getDefaultSharedPreferences(activity.getApplicationContext());
        Editor editor = sp.edit();

        editor.putInt(key1, value1);

        editor.commit();
    }

    public static int readPreferences(Activity activity, String key,
            int defaultValue) {
        SharedPreferences sp = PreferenceManager
                .getDefaultSharedPreferences(activity.getApplicationContext());
        return sp.getInt(key, defaultValue);
    }
}

and use it as follows

to save

Utils.savePreferences(MainActivity.this, "colorKey", colorValue);

to read

 Utils.readPreferences(MainActivity.this, "colorKey", 0)

How to store color value in SharedMemory?

5 Answers5

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