How to control CheckBox status in preferences window?

[Evas Stank]

0 down vote favorite


Hello. I'm beginner in Java Android developing. I'm using Eclipse SDK 3.6.1 version. I have a preferences window with two checkbox and one back button.

<?xml version="1.0" encoding="utf-8"?>
<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android">
<PreferenceCategory
android:title="Options">
<CheckBoxPreference
 android:title="Use PIN" 
 android:defaultValue="true"   
 android:key="checkboxPref" />
<CheckBoxPreference
android:title="Don't use PIN"
android:defaultValue="false"                        
 android:key="checkboxPref2" />
</PreferenceCategory>
<Preference
            android:title="Back"                
            android:key="customPref" />
    </PreferenceCategory>

I want to do this thing: if I push "checkboxPref2", I want to set "checkboxPref" to false. I want that only one checkbox could be checked. This is my preferences.java:

package net.masina;


import android.app.Activity;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.preference.Preference;
import android.preference.PreferenceActivity;
import android.preference.PreferenceManager;
import android.preference.Preference.OnPreferenceClickListener;
import android.widget.CheckBox;

 
public class Preferences extends PreferenceActivity {
        @Override
        protected void onCreate(Bundle savedInstanceState) {
                super.onCreate(savedInstanceState);
                addPreferencesFromResource(R.layout.preferences);
                
                // Get the custom preference
                Preference customPref = (Preference) findPreference("customPref");
                customPref
                                .setOnPreferenceClickListener(new OnPreferenceClickListener() {
 
                                        public boolean onPreferenceClick(Preference preference) {
                                                
                                                SharedPreferences customSharedPreference = getSharedPreferences(
                                                                "myCustomSharedPrefs", Activity.MODE_PRIVATE);
                                                SharedPreferences.Editor editor = customSharedPreference
                                                                .edit();

                                                editor.commit();
                                                Intent intent = new Intent(Preferences.this, second.class);
                          		                startActivity(intent);
                          		                finish();
                                                return true;                                
                                                
                                                
                                        }
                                        
                                });   
                
                
        }  

I'm trying to do like that:

public class second extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.login);
    getPrefs();
}
boolean CheckboxPreference;
boolean CheckboxPreference2;
private void getPrefs() {
    // Get the xml/preferences.xml preferences
    SharedPreferences prefs = PreferenceManager
                    .getDefaultSharedPreferences(getBaseContext());
    CheckboxPreference = prefs.getBoolean("checkboxPref", true);
    CheckboxPreference2 = prefs.getBoolean("checkboxPref2", false);
    if (CheckboxPreference == true){
        CheckboxPreference2 = false;
    } else if (CheckboxPreference2 == true){
        CheckboxPreference = false;
    }
public void myClickHandler(View view) {    	
		switch (view.getId()) {
		// lock aprasymas
		case R.id.Button01:			
			if (CheckboxPreference == true) {// do something}
                        else if (CheckboxPreference2 == true){// do something}
}

But doesn't work. Maybe someone have similar problem?

[Joanne Neal]

In normal Java you would use Radio Buttons instead of check boxes. You then add the two radio buttons to a radio button group (I think that's what it's called - it's a while since I did any Swing) and then the unchecking of one box when you check the other would be handled automatically. Can the Android GUI classes do something similar ?