| /* |
| * Copyright (C) 2014 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.leanback; |
| |
| import android.content.Context; |
| import android.graphics.drawable.Drawable; |
| import android.support.v17.leanback.widget.ImageCardView; |
| import android.support.v17.leanback.widget.Presenter; |
| import android.text.TextUtils; |
| import android.util.Log; |
| import android.view.ViewGroup; |
| import android.view.View.MeasureSpec; |
| import android.view.ViewGroup.LayoutParams; |
| import android.widget.TextView; |
| |
| import java.util.Random; |
| |
| public class CardPresenter extends Presenter { |
| private static final String TAG = "CardPresenter"; |
| |
| private static final int IMAGE_HEIGHT_DP = 120; |
| |
| private static Random sRand = new Random(); |
| private static int sRowHeight = 0; |
| private static int sExpandedRowHeight = 0; |
| |
| private static void setupRowHeights(Context context) { |
| if (sRowHeight == 0) { |
| float density = context.getResources().getDisplayMetrics().density; |
| int height = (int) (IMAGE_HEIGHT_DP * density + 0.5f); |
| |
| ImageCardView v = new ImageCardView(context); |
| v.setMainImageDimensions(LayoutParams.WRAP_CONTENT, height); |
| v.measure(MeasureSpec.UNSPECIFIED, MeasureSpec.UNSPECIFIED); |
| sRowHeight = v.getMeasuredHeight(); |
| v.setActivated(true); |
| v.measure(MeasureSpec.UNSPECIFIED, MeasureSpec.UNSPECIFIED); |
| sExpandedRowHeight = v.getMeasuredHeight(); |
| } |
| } |
| |
| public static int getRowHeight(Context context) { |
| setupRowHeights(context); |
| return sRowHeight; |
| } |
| |
| public static int getExpandedRowHeight(Context context) { |
| setupRowHeights(context); |
| return sExpandedRowHeight; |
| } |
| |
| @Override |
| public ViewHolder onCreateViewHolder(ViewGroup parent) { |
| Log.d(TAG, "onCreateViewHolder"); |
| ImageCardView v = new ImageCardView(parent.getContext()); |
| v.setFocusable(true); |
| v.setFocusableInTouchMode(true); |
| // Randomly makes image view crop as a square or just stretch to original |
| // aspect ratio. |
| if (sRand.nextBoolean()) { |
| v.setMainImageAdjustViewBounds(false); |
| v.setMainImageDimensions(getRowHeight(parent.getContext()), |
| getRowHeight(parent.getContext())); |
| } else { |
| v.setMainImageAdjustViewBounds(true); |
| v.setMainImageDimensions(LayoutParams.WRAP_CONTENT, |
| getRowHeight(parent.getContext())); |
| } |
| return new ViewHolder(v); |
| } |
| |
| @Override |
| public void onBindViewHolder(ViewHolder viewHolder, Object item) { |
| Log.d(TAG, "onBindViewHolder for " + item.toString()); |
| PhotoItem photoItem = (PhotoItem) item; |
| Drawable drawable = viewHolder.view.getContext().getResources() |
| .getDrawable(photoItem.getImageResourceId()); |
| ((ImageCardView) viewHolder.view).setMainImage(drawable); |
| ((ImageCardView) viewHolder.view).setTitleText(photoItem.getTitle()); |
| if (!TextUtils.isEmpty(photoItem.getContent())) { |
| ((ImageCardView) viewHolder.view).setContentText(photoItem.getContent()); |
| } |
| } |
| |
| @Override |
| public void onUnbindViewHolder(ViewHolder viewHolder) { |
| Log.d(TAG, "onUnbindViewHolder"); |
| } |
| } |