Use getters and setters and make the class they reside as singleton class.
This is a singleton class.Using this class we can share data(ex: int,boolean,activity instance ...etc) all over the class.
public class CommonModelClass
{
public static CommonModelClass singletonObject;
/** A private Constructor prevents any other class from instantiating. */
private Activity baseActivity;
public CommonModelClass()
{
// Optional Code
}
public static synchronized CommonModelClass getSingletonObject()
{
if (singletonObject == null)
{
singletonObject = new CommonModelClass();
}
return singletonObject;
}
/**
* used to clear CommonModelClass(SingletonClass) Memory
*/
public void clear()
{
singletonObject = null;
}
public Object clone() throws CloneNotSupportedException
{
throw new CloneNotSupportedException();
}
//getters and setters starts from here.it is used to set and get a value
public Activity getbaseActivity()
{
return baseActivity;
}
public void setbaseActivity(Activity baseActivity)
{
this.baseActivity = baseActivity;
}
}
In BaseActivity class do like this.
Class BaseActivity extends Activity{
@Override
protected void onCreate(Bundle savedInstanceState) {
CommonModelClass commonModelClass = CommonModelClass.getSingletonObject();
commonModelClass.setbaseActivity(BaseActivity.this);
//after using the BaseActivity instance dont forget to call commonModelClass.clear(); else it wont be garbage collected
}
}
In SettingsActivity do like this
Class SettingsActivity extends Activity{
@Override
protected void onCreate(Bundle savedInstanceState) {
CommonModelClass commonModelClass = CommonModelClass.getSingletonObject();
Activity instanceBaseActivity= commonModelClass.getbaseActivity();;
}
}
please give tick if this works