[SNIPPET] Aggiunta dinamica di Fragments a ViewPager

[cesco]

Dato che a volte nel ViewPager vi è la necessità di aggiungere fragments dinamicamente, ho pensato fosse una buona idea condividere questi frammenti di codice
Possono tornare utili in diverse situazioni

Il tutto è postato in un Gist su github, scaricabile qui: https://gist.github.com/cesco89/11008973

Qui sotto trovate comunque l'embed del gist sopra linkato

	List<Fragment> fragments = buildFragments();
	ArrayList<String> categories = {"1", "2", "3", ..., "n"};
	mPager = (ViewPager) v.findViewById(R.id.pager);
	mPageAdapter = new MyFragmentPageAdapter(this,getSupportFragmentManager(), fragments, categories);
	mPager.setAdapter(mPageAdapter);
	//Add a new Fragment to the list with bundle
	Bundle b = new Bundle();
	b.putInt("position", i);
	String title = "asd";
	mPageAdapter.add(MyFragment.class, title, b);
	mPageAdapter.notifyDataSetChanged();

view raw code implementation hosted with ❤ by GitHub

	import java.util.ArrayList;
	import java.util.List;
	import android.content.Context;
	import android.os.Bundle;
	import android.support.v4.app.Fragment;
	import android.support.v4.app.FragmentManager;
	import android.support.v4.app.FragmentPagerAdapter;
	public class MyFragmentPageAdapter extends FragmentPagerAdapter {
	public static int pos = 0;
	private List<Fragment> myFragments;
	private ArrayList<String> categories;
	private Context context;
	public MyFragmentPageAdapter(Context c, FragmentManager fragmentManager, List<Fragment> myFrags, ArrayList<String> cats) {
	super(fragmentManager);
	myFragments = myFrags;
	this.categories = cats;
	this.context = c;
	}
	@Override
	public Fragment getItem(int position) {
	return myFragments.get(position);
	}
	@Override
	public int getCount() {
	return myFragments.size();
	}
	@Override
	public CharSequence getPageTitle(int position) {
	setPos(position);
	return categories.get(position);
	}
	public static int getPos() {
	return pos;
	}
	public void add(Class<Fragment> c, String title, Bundle b) {
	myFragments.add(Fragment.instantiate(context,c.getName(),b));
	categories.add(title);
	}
	public static void setPos(int pos) {
	MyFragmentPageAdapter.pos = pos;
	}
	}

view raw FragmentPageAdapter hosted with ❤ by GitHub

	private List<android.support.v4.app.Fragment> buildFragments() {
	List<android.support.v4.app.Fragment> fragments = new ArrayList<android.support.v4.app.Fragment>();
	for(int i = 0; i<categories.size(); i++) {
	Bundle b = new Bundle();
	b.putInt("position", i);
	fragments.add(Fragment.instantiate(this,MyPagerFragment.class.getName(),b));
	}
	return fragments;
	}

view raw Fragments list builder hosted with ❤ by GitHub