The file containing the source code shown below is located in the corresponding directory in <sdk>/samples/android-<version>/...
/*
* Copyright (C) 2009 The Android开源工程
*
* 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.apis.app;
// Need the following import to get access to the app resources, since this
// class is in a sub-package.
import com.example.android.apis.R;
import android.app.Activity;
import android.app.ActivityOptions;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
/**
* <p>Example of using a custom animation when transitioning between activities.</p>
*/
public class Animation extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_animation);
// Watch for button clicks.
Button button = (Button)findViewById(R.id.fade_animation);
button.setOnClickListener(mFadeListener);
button = (Button)findViewById(R.id.zoom_animation);
button.setOnClickListener(mZoomListener);
if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.JELLY_BEAN) {
button = (Button)findViewById(R.id.modern_fade_animation);
button.setOnClickListener(mModernFadeListener);
button = (Button)findViewById(R.id.modern_zoom_animation);
button.setOnClickListener(mModernZoomListener);
button = (Button)findViewById(R.id.scale_up_animation);
button.setOnClickListener(mScaleUpListener);
button = (Button)findViewById(R.id.zoom_thumbnail_animation);
button.setOnClickListener(mZoomThumbnailListener);
} else {
findViewById(R.id.modern_fade_animation).setEnabled(false);
findViewById(R.id.modern_zoom_animation).setEnabled(false);
findViewById(R.id.scale_up_animation).setEnabled(false);
findViewById(R.id.zoom_thumbnail_animation).setEnabled(false);
}
}
private OnClickListener mFadeListener = new OnClickListener() {
public void onClick(View v) {
// Request the next activity transition (here starting a new one).
startActivity(new Intent(Animation.this, AlertDialogSamples.class));
// Supply a custom animation. This one will just fade the new
// activity on top. Note that we need to also supply an animation
// (here just doing nothing for the same amount of time) for the
// old activity to prevent it from going away too soon.
overridePendingTransition(R.anim.fade, R.anim.hold);
}
};
private OnClickListener mZoomListener = new OnClickListener() {
public void onClick(View v) {
// Request the next activity transition (here starting a new one).
startActivity(new Intent(Animation.this, AlertDialogSamples.class));
// This is a more complicated animation, involving transformations
// on both this (exit) and the new (enter) activity. Note how for
// the duration of the animation we force the exiting activity
// to be Z-ordered on top (even though it really isn't) to achieve
// the effect we want.
overridePendingTransition(R.anim.zoom_enter, R.anim.zoom_exit);
}
};
private OnClickListener mModernFadeListener = new OnClickListener() {
public void onClick(View v) {
// Create the desired custom animation, involving transformations
// on both this (exit) and the new (enter) activity. Note how for
// the duration of the animation we force the exiting activity
// to be Z-ordered on top (even though it really isn't) to achieve
// the effect we want.
ActivityOptions opts = ActivityOptions.makeCustomAnimation(Animation.this,
R.anim.fade, R.anim.hold);
// Request the activity be started, using the custom animation options.
startActivity(new Intent(Animation.this, AlertDialogSamples.class), opts.toBundle());
}
};
private OnClickListener mModernZoomListener = new OnClickListener() {
public void onClick(View v) {
// Create a more complicated animation, involving transformations
// on both this (exit) and the new (enter) activity. Note how for
// the duration of the animation we force the exiting activity
// to be Z-ordered on top (even though it really isn't) to achieve
// the effect we want.
ActivityOptions opts = ActivityOptions.makeCustomAnimation(Animation.this,
R.anim.zoom_enter, R.anim.zoom_enter);
// Request the activity be started, using the custom animation options.
startActivity(new Intent(Animation.this, AlertDialogSamples.class), opts.toBundle());
}
};
private OnClickListener mScaleUpListener = new OnClickListener() {
public void onClick(View v) {
// Create a scale-up animation that originates at the button
// being pressed.
ActivityOptions opts = ActivityOptions.makeScaleUpAnimation(
v, 0, 0, v.getWidth(), v.getHeight());
// Request the activity be started, using the custom animation options.
startActivity(new Intent(Animation.this, AlertDialogSamples.class), opts.toBundle());
}
};
private OnClickListener mZoomThumbnailListener = new OnClickListener() {
public void onClick(View v) {
// Create a thumbnail animation. We are going to build our thumbnail
// just from the view that was pressed. We make sure the view is
// not selected, because by the time the animation starts we will
// have finished with the selection of the tap.
v.setDrawingCacheEnabled(true);
v.setPressed(false);
v.refreshDrawableState();
Bitmap bm = v.getDrawingCache();
Canvas c = new Canvas(bm);
//c.drawARGB(255, 255, 0, 0);
ActivityOptions opts = ActivityOptions.makeThumbnailScaleUpAnimation(
v, bm, 0, 0);
// Request the activity be started, using the custom animation options.
startActivity(new Intent(Animation.this, AlertDialogSamples.class), opts.toBundle());
v.setDrawingCacheEnabled(false);
}
};
}