Get Fragment Manager from Custom Component

Question

I need to open a dialog from my custom component. To do this I need fragment manager, but I can't call getFragmentManager(): "The method getFragmentManager() is undefined for the type Context"

public class MyCustomButton extends Button {

    View.OnClickListener myOnlyhandler = new View.OnClickListener() {
        public void onClick(View v) {
            MyDialogFragment dialog = new MyDialogFragment();
            dialog.show(getFragmentManager(), "Tag");
        }
    };

}

Is there a better way to do this?

The buttons are placed in layout file:

<com.example.MyCustomButton android:id="@+id/myId1"/>
<com.example.MyCustomButton android:id="@+id/myId2"/>
<com.example.MyCustomButton android:id="@+id/myId3"/>

I need one listener for all of them.

Answer 1

It's better to create buttons programmatically and pass the context to the declared class like this. change your class to this:

public class MyCustomButton extends Button {
private Context context;
View.OnClickListener myOnlyhandler = new View.OnClickListener() {
    public void onClick(View v) {
        MyDialogFragment dialog = new MyDialogFragment();
        dialog.show(getFragmentManager(), "Tag");
    }
};
public void MyCustomButton(Context context){
   this.context=context;
   }
}

and then declare your button like this:

MyCustomButton button = new MyCustomButton(MainActivity.this);

then you have to add this view to main LinearLayout.

Answer 2

You should pass a context into the constructor and then cast with an Activity or FragmentActivity to be able to get the FragmentManager or SupportFragmentManger:

public class MyCustomButton extends Button implements View.OnClickListener {

     private FragmentManager fragmentManager;

     public void MyCustomButton(Context context){
        fragmentManager = ((FragmentActivity) context).getFragmentManager();
        setOnClickListener(this);
     }

     @Override
     public void onClick(View v) {
        MyDialogFragment dialog = new MyDialogFragment();
        dialog.show(fragmentManager, "Tag");
    }
}