1 /* 2 * Copyright (C) 2013 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.activityanim; 18 19 import java.util.ArrayList; 20 import java.util.HashMap; 21 22 import android.app.Activity; 23 import android.content.Intent; 24 import android.content.res.Resources; 25 import android.graphics.ColorMatrix; 26 import android.graphics.ColorMatrixColorFilter; 27 import android.graphics.drawable.BitmapDrawable; 28 import android.os.Bundle; 29 import android.view.Menu; 30 import android.view.MenuItem; 31 import android.view.View; 32 import android.widget.GridLayout; 33 import android.widget.ImageView; 34 35 /** 36 * This example shows how to create a custom activity animation when you want something more 37 * than window animations can provide. The idea is to disable window animations for the 38 * activities and to instead launch or return from the sub-activity immediately, but use 39 * property animations inside the activities to customize the transition. 40 * 41 * Watch the associated video for this demo on the DevBytes channel of developer.android.com 42 * or on the DevBytes playlist in the androiddevelopers channel on YouTube at 43 * https://www.youtube.com/playlist?list=PLWz5rJ2EKKc_XOgcRukSoKKjewFJZrKV0. 44 */ 45 public class ActivityAnimations extends Activity { 46 47 private static final String PACKAGE = "com.example.android.activityanim"; 48 static float sAnimatorScale = 1; 49 50 GridLayout mGridLayout; 51 HashMap<ImageView, PictureData> mPicturesData = new HashMap<ImageView, PictureData>(); 52 BitmapUtils mBitmapUtils = new BitmapUtils(); 53 54 @Override onCreate(Bundle savedInstanceState)55 protected void onCreate(Bundle savedInstanceState) { 56 super.onCreate(savedInstanceState); 57 setContentView(R.layout.activity_animations); 58 59 // Grayscale filter used on all thumbnails 60 ColorMatrix grayMatrix = new ColorMatrix(); 61 grayMatrix.setSaturation(0); 62 ColorMatrixColorFilter grayscaleFilter = new ColorMatrixColorFilter(grayMatrix); 63 64 mGridLayout = (GridLayout) findViewById(R.id.gridLayout); 65 mGridLayout.setColumnCount(3); 66 mGridLayout.setUseDefaultMargins(true); 67 68 // add all photo thumbnails to layout 69 Resources resources = getResources(); 70 ArrayList<PictureData> pictures = mBitmapUtils.loadPhotos(resources); 71 for (int i = 0; i < pictures.size(); ++i) { 72 PictureData pictureData = pictures.get(i); 73 BitmapDrawable thumbnailDrawable = 74 new BitmapDrawable(resources, pictureData.thumbnail); 75 thumbnailDrawable.setColorFilter(grayscaleFilter); 76 ImageView imageView = new ImageView(this); 77 imageView.setOnClickListener(thumbnailClickListener); 78 imageView.setImageDrawable(thumbnailDrawable); 79 mPicturesData.put(imageView, pictureData); 80 mGridLayout.addView(imageView); 81 } 82 } 83 84 @Override onCreateOptionsMenu(Menu menu)85 public boolean onCreateOptionsMenu(Menu menu) { 86 getMenuInflater().inflate(R.menu.activity_better_window_animations, menu); 87 return true; 88 } 89 90 @Override onOptionsItemSelected(MenuItem item)91 public boolean onOptionsItemSelected(MenuItem item) { 92 if (item.getItemId() == R.id.menu_slow) { 93 sAnimatorScale = item.isChecked() ? 1 : 5; 94 item.setChecked(!item.isChecked()); 95 } 96 return super.onOptionsItemSelected(item); 97 } 98 99 /** 100 * When the user clicks a thumbnail, bundle up information about it and launch the 101 * details activity. 102 */ 103 private View.OnClickListener thumbnailClickListener = new View.OnClickListener() { 104 105 @Override 106 public void onClick(View v) { 107 // Interesting data to pass across are the thumbnail size/location, the 108 // resourceId of the source bitmap, the picture description, and the 109 // orientation (to avoid returning back to an obsolete configuration if 110 // the device rotates again in the meantime) 111 int[] screenLocation = new int[2]; 112 v.getLocationOnScreen(screenLocation); 113 PictureData info = mPicturesData.get(v); 114 Intent subActivity = new Intent(ActivityAnimations.this, 115 PictureDetailsActivity.class); 116 int orientation = getResources().getConfiguration().orientation; 117 subActivity. 118 putExtra(PACKAGE + ".orientation", orientation). 119 putExtra(PACKAGE + ".resourceId", info.resourceId). 120 putExtra(PACKAGE + ".left", screenLocation[0]). 121 putExtra(PACKAGE + ".top", screenLocation[1]). 122 putExtra(PACKAGE + ".width", v.getWidth()). 123 putExtra(PACKAGE + ".height", v.getHeight()). 124 putExtra(PACKAGE + ".description", info.description); 125 startActivity(subActivity); 126 127 // Override transitions: we don't want the normal window animation in addition 128 // to our custom one 129 overridePendingTransition(0, 0); 130 } 131 }; 132 133 } 134