1 /* 2 * Copyright (C) 2014 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except 5 * in compliance with the License. You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software distributed under the License 10 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express 11 * or implied. See the License for the specific language governing permissions and limitations under 12 * the License. 13 */ 14 package com.example.android.leanback; 15 16 import android.content.Context; 17 import android.graphics.drawable.Drawable; 18 import android.support.v17.leanback.widget.ImageCardView; 19 import android.support.v17.leanback.widget.Presenter; 20 import android.util.Log; 21 import android.view.ViewGroup; 22 import android.view.View.MeasureSpec; 23 import android.view.ViewGroup.LayoutParams; 24 import android.widget.TextView; 25 26 public class CardPresenter extends Presenter { 27 private static final String TAG = "CardPresenter"; 28 29 private static final int IMAGE_HEIGHT_DP = 120; 30 31 private static int sRowHeight = 0; 32 private static int sExpandedRowHeight = 0; 33 setupRowHeights(Context context)34 private static void setupRowHeights(Context context) { 35 if (sRowHeight == 0) { 36 float density = context.getResources().getDisplayMetrics().density; 37 int height = (int) (IMAGE_HEIGHT_DP * density + 0.5f); 38 39 ImageCardView v = new ImageCardView(context); 40 v.setMainImageDimensions(LayoutParams.WRAP_CONTENT, height); 41 v.measure(MeasureSpec.UNSPECIFIED, MeasureSpec.UNSPECIFIED); 42 sRowHeight = v.getMeasuredHeight(); 43 v.setActivated(true); 44 v.measure(MeasureSpec.UNSPECIFIED, MeasureSpec.UNSPECIFIED); 45 sExpandedRowHeight = v.getMeasuredHeight(); 46 } 47 } 48 getRowHeight(Context context)49 public static int getRowHeight(Context context) { 50 setupRowHeights(context); 51 return sRowHeight; 52 } 53 getExpandedRowHeight(Context context)54 public static int getExpandedRowHeight(Context context) { 55 setupRowHeights(context); 56 return sExpandedRowHeight; 57 } 58 59 @Override onCreateViewHolder(ViewGroup parent)60 public ViewHolder onCreateViewHolder(ViewGroup parent) { 61 Log.d(TAG, "onCreateViewHolder"); 62 ImageCardView v = new ImageCardView(parent.getContext()); 63 v.setFocusable(true); 64 v.setFocusableInTouchMode(true); 65 v.setMainImageAdjustViewBounds(true); 66 v.setMainImageDimensions(LayoutParams.WRAP_CONTENT, getRowHeight(parent.getContext())); 67 return new ViewHolder(v); 68 } 69 70 @Override onBindViewHolder(ViewHolder viewHolder, Object item)71 public void onBindViewHolder(ViewHolder viewHolder, Object item) { 72 Log.d(TAG, "onBindViewHolder for " + item.toString()); 73 PhotoItem photoItem = (PhotoItem) item; 74 Drawable drawable = viewHolder.view.getContext().getResources() 75 .getDrawable(photoItem.getImageResourceId()); 76 ((ImageCardView) viewHolder.view).setMainImage(drawable); 77 ((ImageCardView) viewHolder.view).setTitleText(photoItem.getTitle()); 78 } 79 80 @Override onUnbindViewHolder(ViewHolder viewHolder)81 public void onUnbindViewHolder(ViewHolder viewHolder) { 82 Log.d(TAG, "onUnbindViewHolder"); 83 } 84 } 85