Sorry for my bad english.
I have 2 classes,
1 MainActivity.java
(Standard)
2 settings.java
(for settings)
I have a RadioGroup
with 5 Radiobuttons
.
I save the state of the radio buttons as follows (in to settings.java class):
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
SharedPreferences settings = getSharedPreferences("status", 0);
SharedPreferences.Editor editor = settings.edit();
editor.putBoolean("blue", blue.isChecked());
editor.putBoolean("orange", orange.isChecked());
editor.putBoolean("purple", purple.isChecked());
editor.putBoolean("grey", grey.isChecked());
editor.putBoolean("green", green.isChecked());
editor.commit();
}
public void loadSettings () {
SharedPreferences settings = getSharedPreferences("status", 0);
royalBlue.setChecked(settings.getBoolean("blue", false));
orange.setChecked(settings.getBoolean("orange", false));
purple.setChecked(settings.getBoolean("purple", false));
titan.setChecked(settings.getBoolean("grey", false));
eighties.setChecked(settings.getBoolean("green", false));
}
the status of the radio buttons is saved successfully. Even after a restart of the app the radio button is saved.
I would like now when the RadioButton
orange (or other) is selected, the ImageButton
will change my image. I would like to make in the MainActivity
.
I have tried it in the Main Activity so but I always get a NullPoinException
:
Code from the Main ...
private settings load = new settings();
...
...
public void change (){
if (load.orange.isChecked()){
imBuOn.setImageResource(R.drawable.orange);
}
as I said I can so unfortunately unable to access the status of the radio button.
Do I need to maybe use PreferenceManager
? how shall I put it best?