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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.activityanim;
import java.util.ArrayList;
import java.util.HashMap;
import android.app.Activity;
import android.content.Intent;
import android.content.res.Resources;
import android.graphics.ColorMatrix;
import android.graphics.ColorMatrixColorFilter;
import android.graphics.drawable.BitmapDrawable;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.GridLayout;
import android.widget.ImageView;
/**
* This example shows how to create a custom activity animation when you want something more
* than window animations can provide. The idea is to disable window animations for the
* activities and to instead launch or return from the sub-activity immediately, but use
* property animations inside the activities to customize the transition.
*
* Watch the associated video for this demo on the DevBytes channel of developer.android.com
* or on the DevBytes playlist in the androiddevelopers channel on YouTube at
* https://www.youtube.com/playlist?list=PLWz5rJ2EKKc_XOgcRukSoKKjewFJZrKV0.
*/
public class ActivityAnimations extends Activity {
private static final String PACKAGE = "com.example.android.activityanim";
static float sAnimatorScale = 1;
GridLayout mGridLayout;
HashMap<ImageView, PictureData> mPicturesData = new HashMap<ImageView, PictureData>();
BitmapUtils mBitmapUtils = new BitmapUtils();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_animations);
// Grayscale filter used on all thumbnails
ColorMatrix grayMatrix = new ColorMatrix();
grayMatrix.setSaturation(0);
ColorMatrixColorFilter grayscaleFilter = new ColorMatrixColorFilter(grayMatrix);
mGridLayout = (GridLayout) findViewById(R.id.gridLayout);
mGridLayout.setColumnCount(3);
mGridLayout.setUseDefaultMargins(true);
// add all photo thumbnails to layout
Resources resources = getResources();
ArrayList<PictureData> pictures = mBitmapUtils.loadPhotos(resources);
for (int i = 0; i < pictures.size(); ++i) {
PictureData pictureData = pictures.get(i);
BitmapDrawable thumbnailDrawable =
new BitmapDrawable(resources, pictureData.thumbnail);
thumbnailDrawable.setColorFilter(grayscaleFilter);
ImageView imageView = new ImageView(this);
imageView.setOnClickListener(thumbnailClickListener);
imageView.setImageDrawable(thumbnailDrawable);
mPicturesData.put(imageView, pictureData);
mGridLayout.addView(imageView);
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.activity_better_window_animations, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
if (item.getItemId() == R.id.menu_slow) {
sAnimatorScale = item.isChecked() ? 1 : 5;
item.setChecked(!item.isChecked());
}
return super.onOptionsItemSelected(item);
}
/**
* When the user clicks a thumbnail, bundle up information about it and launch the
* details activity.
*/
private View.OnClickListener thumbnailClickListener = new View.OnClickListener() {
@Override
public void onClick(View v) {
// Interesting data to pass across are the thumbnail size/location, the
// resourceId of the source bitmap, the picture description, and the
// orientation (to avoid returning back to an obsolete configuration if
// the device rotates again in the meantime)
int[] screenLocation = new int[2];
v.getLocationOnScreen(screenLocation);
PictureData info = mPicturesData.get(v);
Intent subActivity = new Intent(ActivityAnimations.this,
PictureDetailsActivity.class);
int orientation = getResources().getConfiguration().orientation;
subActivity.
putExtra(PACKAGE + ".orientation", orientation).
putExtra(PACKAGE + ".resourceId", info.resourceId).
putExtra(PACKAGE + ".left", screenLocation[0]).
putExtra(PACKAGE + ".top", screenLocation[1]).
putExtra(PACKAGE + ".width", v.getWidth()).
putExtra(PACKAGE + ".height", v.getHeight()).
putExtra(PACKAGE + ".description", info.description);
startActivity(subActivity);
// Override transitions: we don't want the normal window animation in addition
// to our custom one
overridePendingTransition(0, 0);
}
};
}
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