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/*
* Copyright (C) 2013 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.support.v7.widget.RecyclerView;
import android.support.v17.leanback.widget.HorizontalGridView;
import android.support.v17.leanback.widget.OnChildSelectedListener;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.graphics.BitmapFactory;
import android.graphics.Color;
import android.graphics.drawable.ColorDrawable;
import android.graphics.drawable.Drawable;
import android.net.Uri;
import android.os.Bundle;
import android.util.Log;
import android.util.SparseArray;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.View.OnFocusChangeListener;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;
import java.io.File;
public class HorizontalGridTestActivity extends Activity {
private static final String TAG = "HorizontalGridTestActivity";
private static final boolean DEBUG = true;
private static final String SELECT_ACTION = "android.test.leanback.widget.SELECT";
private static final int NUM_ITEMS = 100;
private static final boolean STAGGERED = true;
private HorizontalGridView mHorizontalGridView;
private int mScrollState = RecyclerView.SCROLL_STATE_IDLE;
private RecyclerView.OnScrollListener mScrollListener = new RecyclerView.OnScrollListener() {
@Override
public void onScrollStateChanged(RecyclerView recyclerView, int newState) {
if (DEBUG) {
final String[] stateNames = { "IDLE", "DRAGGING", "SETTLING" };
Log.v(TAG, "onScrollStateChanged "
+ (newState < stateNames.length ? stateNames[newState] : newState));
}
mScrollState = newState;
}
};
private View createView() {
View view = getLayoutInflater().inflate(R.layout.horizontal_grid, null, false);
mHorizontalGridView = (HorizontalGridView) view.findViewById(R.id.gridview);
mHorizontalGridView.setWindowAlignment(HorizontalGridView.WINDOW_ALIGN_BOTH_EDGE);
mHorizontalGridView.setWindowAlignmentOffsetPercent(35);
mHorizontalGridView.setOnChildSelectedListener(new OnChildSelectedListener() {
@Override
public void onChildSelected(ViewGroup parent, View view, int position, long id) {
if (DEBUG) Log.d(TAG, "onChildSelected position=" + position + " id="+id);
}
});
return view;
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (DEBUG) Log.v(TAG, "onCreate");
RecyclerView.Adapter adapter = new MyAdapter();
View view = createView();
mHorizontalGridView.setAdapter(new MyAdapter());
setContentView(view);
mHorizontalGridView.setOnScrollListener(mScrollListener);
}
@Override
protected void onNewIntent(Intent intent) {
if (DEBUG) Log.v(TAG, "onNewIntent " + intent);
if (intent.getAction().equals(SELECT_ACTION)) {
int position = intent.getIntExtra("SELECT_POSITION", -1);
if (position >= 0) {
mHorizontalGridView.setSelectedPosition(position);
}
}
super.onNewIntent(intent);
}
private OnFocusChangeListener mItemFocusChangeListener = new OnFocusChangeListener() {
@Override
public void onFocusChange(View v, boolean hasFocus) {
if (hasFocus) {
v.setBackgroundColor(Color.YELLOW);
} else {
v.setBackgroundColor(Color.LTGRAY);
}
}
};
private OnClickListener mItemClickListener = new OnClickListener() {
@Override
public void onClick(View v) {
mHorizontalGridView.getAdapter().notifyDataSetChanged();
}
};
class MyAdapter extends RecyclerView.Adapter {
private int[] mItemLengths;
MyAdapter() {
mItemLengths = new int[NUM_ITEMS];
for (int i = 0; i < mItemLengths.length; i++) {
mItemLengths[i] = STAGGERED ? (int)(Math.random() * 180) + 180 : 240;
}
}
@Override
public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
if (DEBUG) Log.v(TAG, "createViewHolder " + viewType);
TextView textView = new TextView(parent.getContext());
textView.setTextColor(Color.BLACK);
textView.setFocusable(true);
textView.setFocusableInTouchMode(true);
textView.setOnFocusChangeListener(mItemFocusChangeListener);
textView.setOnClickListener(mItemClickListener);
return new ViewHolder(textView);
}
@Override
public void onBindViewHolder(RecyclerView.ViewHolder baseHolder, int position) {
if (DEBUG) Log.v(TAG, "bindViewHolder " + position + " " + baseHolder);
ViewHolder holder = (ViewHolder) baseHolder;
((TextView) holder.itemView).setText("Item "+position);
holder.itemView.setBackgroundColor(Color.LTGRAY);
holder.itemView.setLayoutParams(new ViewGroup.MarginLayoutParams(mItemLengths[position],
80));
}
@Override
public int getItemCount() {
return mItemLengths.length;
}
}
static class ViewHolder extends RecyclerView.ViewHolder {
public ViewHolder(View v) {
super(v);
}
}
}
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