GridItemPresenter.java

/*
 * Copyright (c) 2015 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.example.android.tvleanback.presenter;

import android.content.res.Resources;
import android.graphics.Color;
import android.support.v17.leanback.widget.Presenter;
import android.support.v4.content.ContextCompat;
import android.view.Gravity;
import android.view.ViewGroup;
import android.widget.TextView;

import com.example.android.tvleanback.R;
import com.example.android.tvleanback.ui.MainFragment;

public class GridItemPresenter extends Presenter {
    private final MainFragment mainFragment;

    public GridItemPresenter(MainFragment mainFragment) {
        this.mainFragment = mainFragment;
    }

    @Override
    public ViewHolder onCreateViewHolder(ViewGroup parent) {
        TextView view = new TextView(parent.getContext());

        Resources res = parent.getResources();
        int width = res.getDimensionPixelSize(R.dimen.grid_item_width);
        int height = res.getDimensionPixelSize(R.dimen.grid_item_height);

        view.setLayoutParams(new ViewGroup.LayoutParams(width, height));
        view.setFocusable(true);
        view.setFocusableInTouchMode(true);
        view.setBackgroundColor(ContextCompat.getColor(parent.getContext(),
                R.color.default_background));
        view.setTextColor(Color.WHITE);
        view.setGravity(Gravity.CENTER);
        return new ViewHolder(view);
    }

    @Override
    public void onBindViewHolder(ViewHolder viewHolder, Object item) {
        ((TextView) viewHolder.view).setText((String) item);
    }

    @Override
    public void onUnbindViewHolder(ViewHolder viewHolder) {
    }
}