1 /* 2 * Copyright (C) 2007 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.example.android.apis.view; 18 19 import com.example.android.apis.R; 20 21 import android.app.Activity; 22 import android.content.Context; 23 import android.content.res.TypedArray; 24 import android.os.Bundle; 25 import android.view.ContextMenu; 26 import android.view.MenuItem; 27 import android.view.View; 28 import android.view.ViewGroup; 29 import android.view.ContextMenu.ContextMenuInfo; 30 import android.widget.AdapterView; 31 import android.widget.BaseAdapter; 32 import android.widget.Gallery; 33 import android.widget.ImageView; 34 import android.widget.Toast; 35 import android.widget.AdapterView.AdapterContextMenuInfo; 36 import android.widget.AdapterView.OnItemClickListener; 37 38 public class Gallery1 extends Activity { 39 40 @Override onCreate(Bundle savedInstanceState)41 public void onCreate(Bundle savedInstanceState) { 42 super.onCreate(savedInstanceState); 43 setContentView(R.layout.gallery_1); 44 45 // Reference the Gallery view 46 Gallery g = (Gallery) findViewById(R.id.gallery); 47 // Set the adapter to our custom adapter (below) 48 g.setAdapter(new ImageAdapter(this)); 49 50 // Set a item click listener, and just Toast the clicked position 51 g.setOnItemClickListener(new OnItemClickListener() { 52 public void onItemClick(AdapterView parent, View v, int position, long id) { 53 Toast.makeText(Gallery1.this, "" + position, Toast.LENGTH_SHORT).show(); 54 } 55 }); 56 57 // We also want to show context menu for longpressed items in the gallery 58 registerForContextMenu(g); 59 } 60 61 @Override onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo)62 public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) { 63 menu.add(R.string.gallery_2_text); 64 } 65 66 @Override onContextItemSelected(MenuItem item)67 public boolean onContextItemSelected(MenuItem item) { 68 AdapterContextMenuInfo info = (AdapterContextMenuInfo) item.getMenuInfo(); 69 Toast.makeText(this, "Longpress: " + info.position, Toast.LENGTH_SHORT).show(); 70 return true; 71 } 72 73 public class ImageAdapter extends BaseAdapter { 74 int mGalleryItemBackground; 75 ImageAdapter(Context c)76 public ImageAdapter(Context c) { 77 mContext = c; 78 // See res/values/attrs.xml for the <declare-styleable> that defines 79 // Gallery1. 80 TypedArray a = obtainStyledAttributes(R.styleable.Gallery1); 81 mGalleryItemBackground = a.getResourceId( 82 R.styleable.Gallery1_android_galleryItemBackground, 0); 83 a.recycle(); 84 } 85 getCount()86 public int getCount() { 87 return mImageIds.length; 88 } 89 getItem(int position)90 public Object getItem(int position) { 91 return position; 92 } 93 getItemId(int position)94 public long getItemId(int position) { 95 return position; 96 } 97 getView(int position, View convertView, ViewGroup parent)98 public View getView(int position, View convertView, ViewGroup parent) { 99 ImageView i = new ImageView(mContext); 100 101 i.setImageResource(mImageIds[position]); 102 i.setScaleType(ImageView.ScaleType.FIT_XY); 103 i.setLayoutParams(new Gallery.LayoutParams(136, 88)); 104 105 // The preferred Gallery item background 106 i.setBackgroundResource(mGalleryItemBackground); 107 108 return i; 109 } 110 111 private Context mContext; 112 113 private Integer[] mImageIds = { 114 R.drawable.gallery_photo_1, 115 R.drawable.gallery_photo_2, 116 R.drawable.gallery_photo_3, 117 R.drawable.gallery_photo_4, 118 R.drawable.gallery_photo_5, 119 R.drawable.gallery_photo_6, 120 R.drawable.gallery_photo_7, 121 R.drawable.gallery_photo_8 122 }; 123 } 124 125 } 126