In the code, there is an alert box(for logout functionality). This alert box is created inside a method (ie logout method) and then two onClickListener are anonymously added to it. How can I call these anonymous listeners from outside?
Code:
AlertDialog.Builder builder
builder.setPositiveButton("Yes", new DialogInterface.OnClickListener(){
public void onClick(DialogInterface dialog, int id) {
//some logic
}
}
What I need is to somehow call this onClick method and pass the instance of same dialog box. I have read examples of doing this with reflection, but in those examples anonymous class was a subclass ie return value of 'new' was catched
You could make the listener into a field variable.
private final DialogInterface.OnClickListener dialogYesListener = new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
//some logic
}
};
AlertDialog.Builder builder
builder.setPositiveButton("Yes", dialogYesListener);
You can't call it if you don't have any reference of that object.
You can do like following:
AlertDialog.Builder builder
DialogInterface.OnClickListener listener = new DialogInterface.OnClickListener(){
public void onClick(DialogInterface dialog, int id) {
//some logic
}
builder.setPositiveButton("Yes", listener);
}
// now you can call function on if like
listener.SomeFunction()
See JLS 15.9.5. Anonymous Class Declarations for more details.
You have two options:
1) Refactor your code to have a reference to an instance of an DialogInterfact.OnClickListener
like this:
AlertDialog.Builder builder;
DialogInterface.OnClickListener listener = new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
//some logic
}
}
builder.setPositiveButton("Yes", listener);
2) I don't know whether there is such an API, but if yes, you can try to extract listener implementation from a builder. Pseudocode should look like this:
DialogInterface.OnClickListener listener =
builder.getPositiveButton().getListener(); //adjust this to a real API
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