Question

I have implemented an application with multiple check boxes with multiple layouts.I am invisible the layouts when user unchecked the related check box.then i am trying to save the content and settings when user re-launch the application.

I have implemented code as follows:

public class MultipleControllsActivity extends Activity {
/** Called when the activity is first created. */

LinearLayout l1,l2,l3;



@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    l1 = ((LinearLayout)findViewById(R.id.linearLayout1));
    l2 = ((LinearLayout)findViewById(R.id.linearLayout2));
    l3 = ((LinearLayout)findViewById(R.id.linearLayout3));

    ((CheckBox)findViewById(R.id.checkBox1)).setOnCheckedChangeListener(new OnCheckedChangeListener() {

        @Override
        public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {

            if(!isChecked){
            l1.setVisibility(View.GONE);    
            }
        }
    });


    ((CheckBox)findViewById(R.id.checkBox2)).setOnCheckedChangeListener(new OnCheckedChangeListener() {

        @Override
        public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {

            l2.setVisibility(View.GONE);
        }
    });


    ((CheckBox)findViewById(R.id.checkBox3)).setOnCheckedChangeListener(new OnCheckedChangeListener() {

        @Override
        public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {

            l3.setVisibility(View.GONE);
        }
    });


    ((Button)findViewById(R.id.saveTemp)).setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View v) {

            //Save the content code here

        }
    });

}

}

When i click on the saveTemp button then i would like to save the content and if user re-launch the application then the saved content will be appear.

please any body help me…

Answer 1

You can use

SharedPreferences

http://developer.android.com/reference/android/content/SharedPreferences.html

Use This :–

     public class MultipleControllsActivity extends Activity {
    /** Called when the activity is first created. */

    LinearLayout l1,l2,l3;



    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
     SharedPreferences pref_settings;
    pref_settings = getSharedPreferences("DATA", Context.MODE_PRIVATE);
        l1 = ((LinearLayout)findViewById(R.id.linearLayout1));
        l2 = ((LinearLayout)findViewById(R.id.linearLayout2));
        l3 = ((LinearLayout)findViewById(R.id.linearLayout3));
l1.setVisibility(pref_settings.getInt("l1", 0));
l2.setVisibility(pref_settings.getInt("l2", 0));
l2.setVisibility(pref_settings.getInt("l3", 0));

        ((CheckBox)findViewById(R.id.checkBox1)).setOnCheckedChangeListener(new OnCheckedChangeListener() {

            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {

                if(!isChecked){
                l1.setVisibility(View.GONE);    
                }
            }
        });


        ((CheckBox)findViewById(R.id.checkBox2)).setOnCheckedChangeListener(new OnCheckedChangeListener() {

            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {

                l2.setVisibility(View.GONE);
            }
        });


        ((CheckBox)findViewById(R.id.checkBox3)).setOnCheckedChangeListener(new OnCheckedChangeListener() {

            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {

                l3.setVisibility(View.GONE);
            }
        });


        ((Button)findViewById(R.id.saveTemp)).setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {

                SharedPreferences pref_settings;
    pref_settings = getSharedPreferences("DATA", Context.MODE_PRIVATE);
            SharedPreferences.Editor editor = pref_settings.edit();


                editor.putInt("l1", l1.getVisibility());
    editor.putInt("l2", l2.getVisibility());
    editor.putInt("l3", l3.getVisibility());

                editor.commit();

            }
        });

    }