Android Open Source - BuildingForAndroidTV Custom Headers Fragment

From Project

Back to project page BuildingForAndroidTV.

License

The source code is released under:

MIT License

If you think the Android project BuildingForAndroidTV listed in this page is inappropriate, such as containing malicious code/tools or violating the copyright, please email info at java2s dot com, thanks.

Java Source Code

package com.sgottard.tvdemoapp;
/*from   ww  w.j  a  v a  2 s . co m*/
import android.app.Fragment;
import android.os.Bundle;
import android.support.v17.leanback.app.HeadersFragment;
import android.support.v17.leanback.widget.ArrayObjectAdapter;
import android.support.v17.leanback.widget.HeaderItem;
import android.support.v17.leanback.widget.ListRow;
import android.support.v17.leanback.widget.OnItemSelectedListener;
import android.support.v17.leanback.widget.Row;

import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.LinkedHashMap;

/**
 * Created by Sebastiano Gottardo on 08/11/14.
 */
public class CustomHeadersFragment extends HeadersFragment {

  private ArrayObjectAdapter adapter;

  @Override
  public void onActivityCreated(Bundle savedInstanceState) {
    super.onActivityCreated(savedInstanceState);

    customSetBackground(R.color.fastlane_background);
    setOnItemSelectedListener(getDefaultItemSelectedListener());
    setHeaderAdapter();

    setCustomPadding();
  }

  private void setHeaderAdapter() {
    adapter = new ArrayObjectAdapter();

    LinkedHashMap<Integer, CustomRowsFragment> fragments = ((TVDemoActivity) getActivity()).getFragments();

    int id = 0;
    for (int i = 0; i < fragments.size(); i++) {
      HeaderItem header = new HeaderItem(id, "Category " + i, null);
      ArrayObjectAdapter innerAdapter = new ArrayObjectAdapter();
      innerAdapter.add(fragments.get(i));
      adapter.add(id, new ListRow(header, innerAdapter));
      id++;
    }

    setAdapter(adapter);
  }

  private void setCustomPadding() {
    getView().setPadding(0, Utils.dpToPx(128, getActivity()), Utils.dpToPx(48, getActivity()), 0);
  }

  private OnItemSelectedListener getDefaultItemSelectedListener() {
    return new OnItemSelectedListener() {
      @Override
      public void onItemSelected(Object o, Row row) {
        Object obj = ((ListRow) row).getAdapter().get(0);
        getFragmentManager().beginTransaction().replace(R.id.rows_container, (Fragment) obj).commit();
        ((TVDemoActivity) getActivity()).updateCurrentRowsFragment((CustomRowsFragment) obj);
      }
    };
  }

  /**
   * Since the original setBackgroundColor is private, we need to
   * access it via reflection
   *
   * @param colorResource The colour resource
   */
  private void customSetBackground(int colorResource) {
    try {
      Class clazz = HeadersFragment.class;
      Method m = clazz.getDeclaredMethod("setBackgroundColor", Integer.TYPE);
      m.setAccessible(true);
      m.invoke(this, getResources().getColor(colorResource));
    } catch (NoSuchMethodException e) {
      e.printStackTrace();
    } catch (InvocationTargetException e) {
      e.printStackTrace();
    } catch (IllegalAccessException e) {
      e.printStackTrace();
    }
  }
}

Java Source Code List