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Demos for show/hide layout transitions

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Change-Id: Idb7ecb66b7dc0126a230385dd09af6a9208d5345
This commit is contained in:
Chet Haase
2010-09-21 08:28:16 -07:00
parent 6f6a7107ac
commit 2a06483139
5 changed files with 232 additions and 8 deletions
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5
samples/ApiDemos/src/com/example/android/apis/animation/LayoutAnimations.java
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@@ -36,9 +36,8 @@ import android.os.Bundle;
import android.widget.Button;
/**
* This application demonstrates the seeking capability of ValueAnimator. The SeekBar in the
* UI allows you to set the position of the animation. Pressing the Run button will play from
* the current position of the animation.
* This application demonstrates how to use LayoutTransition to automate transition animations
* as items are removed from or added to a container.
*/
public class LayoutAnimations extends Activity {

5
samples/ApiDemos/src/com/example/android/apis/animation/LayoutAnimationsByDefault.java
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@@ -28,9 +28,8 @@ import android.os.Bundle;
import android.widget.Button;
/**
* This application demonstrates the seeking capability of ValueAnimator. The SeekBar in the
* UI allows you to set the position of the animation. Pressing the Run button will play from
* the current position of the animation.
* This application demonstrates how to use the animateLayoutChanges tag in XML to automate
* transition animations as items are removed from or added to a container.
*/
public class LayoutAnimationsByDefault extends Activity {

180
samples/ApiDemos/src/com/example/android/apis/animation/LayoutAnimationsHideShow.java Normal file
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@@ -0,0 +1,180 @@
/*
* Copyright (C) 2010 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.apis.animation;
// Need the following import to get access to the app resources, since this
// class is in a sub-package.
import android.animation.Animator;
import android.animation.ObjectAnimator;
import android.widget.LinearLayout;
import com.example.android.apis.R;
import android.animation.AnimatorListenerAdapter;
import android.animation.Keyframe;
import android.animation.LayoutTransition;
import android.animation.PropertyValuesHolder;
import android.view.View;
import android.view.ViewGroup;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.app.Activity;
import android.os.Bundle;
import android.widget.Button;
/**
* This application demonstrates how to use LayoutTransition to automate transition animations
* as items are hidden or shown in a container.
*/
public class LayoutAnimationsHideShow extends Activity {
private int numButtons = 1;
ViewGroup container = null;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.layout_animations_hideshow);
final CheckBox hideGoneCB = (CheckBox) findViewById(R.id.hideGoneCB);
container = new FixedGridLayout(this);
((FixedGridLayout)container).setCellHeight(50);
((FixedGridLayout)container).setCellWidth(100);
container = new LinearLayout(this);
// Add a slew of buttons to the container. We won't add any more buttons at runtime, but
// will just show/hide the buttons we've already created
for (int i = 0; i < 6; ++i) {
Button newButton = new Button(this);
newButton.setText("Click to Hide " + i);
container.addView(newButton);
newButton.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
v.setVisibility(hideGoneCB.isChecked() ? View.GONE : View.INVISIBLE);
}
});
}
final LayoutTransition transitioner = new LayoutTransition();
container.setLayoutTransition(transitioner);
ViewGroup parent = (ViewGroup) findViewById(R.id.parent);
parent.addView(container);
Button addButton = (Button) findViewById(R.id.addNewButton);
addButton.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
for (int i = 0; i < container.getChildCount(); ++i) {
View view = (View) container.getChildAt(i);
view.setVisibility(View.VISIBLE);
}
}
});
CheckBox customAnimCB = (CheckBox) findViewById(R.id.customAnimCB);
customAnimCB.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
long duration;
if (isChecked) {
transitioner.setStagger(LayoutTransition.CHANGE_APPEARING, 30);
transitioner.setStagger(LayoutTransition.CHANGE_DISAPPEARING, 30);
setupAnimations(transitioner);
duration = 500;
} else {
transitioner.setStagger(LayoutTransition.CHANGE_APPEARING, 0);
transitioner.setStagger(LayoutTransition.CHANGE_DISAPPEARING, 0);
transitioner.setAnimator(LayoutTransition.APPEARING, null);
transitioner.setAnimator(LayoutTransition.DISAPPEARING, null);
transitioner.setAnimator(LayoutTransition.CHANGE_APPEARING, null);
transitioner.setAnimator(LayoutTransition.CHANGE_DISAPPEARING, null);
duration = 300;
}
transitioner.setDuration(duration);
}
});
}
private void setupAnimations(LayoutTransition transition) {
// Changing while Adding
PropertyValuesHolder<Integer> pvhLeft =
new PropertyValuesHolder<Integer>("left", 0, 1);
PropertyValuesHolder<Integer> pvhTop =
new PropertyValuesHolder<Integer>("top", 0, 1);
PropertyValuesHolder<Integer> pvhRight =
new PropertyValuesHolder<Integer>("right", 0, 1);
PropertyValuesHolder<Integer> pvhBottom =
new PropertyValuesHolder<Integer>("bottom", 0, 1);
PropertyValuesHolder<Float> pvhScaleX =
new PropertyValuesHolder<Float>("scaleX", 1f, 0f, 1f);
PropertyValuesHolder<Float> pvhScaleY =
new PropertyValuesHolder<Float>("scaleY", 1f, 0f, 1f);
final ObjectAnimator changeIn =
new ObjectAnimator(transition.getDuration(LayoutTransition.CHANGE_APPEARING),
this, pvhLeft, pvhTop, pvhRight, pvhBottom, pvhScaleX, pvhScaleY);
transition.setAnimator(LayoutTransition.CHANGE_APPEARING, changeIn);
changeIn.addListener(new AnimatorListenerAdapter() {
public void onAnimationEnd(Animator anim) {
View view = (View) ((ObjectAnimator) anim).getTarget();
view.setScaleX(1f);
view.setScaleY(1f);
}
});
// Changing while Removing
Keyframe kf0 = new Keyframe(0f, 0f);
Keyframe kf1 = new Keyframe(.9999f, 360f);
Keyframe kf2 = new Keyframe(1f, 0f);
PropertyValuesHolder<Keyframe> pvhRotation =
new PropertyValuesHolder<Keyframe>("rotation", kf0, kf1, kf2);
final ObjectAnimator changeOut =
new ObjectAnimator(transition.getDuration(LayoutTransition.CHANGE_DISAPPEARING),
this, pvhLeft, pvhTop, pvhRight, pvhBottom, pvhRotation);
transition.setAnimator(LayoutTransition.CHANGE_DISAPPEARING, changeOut);
changeOut.addListener(new AnimatorListenerAdapter() {
public void onAnimationEnd(Animator anim) {
View view = (View) ((ObjectAnimator) anim).getTarget();
view.setRotation(0f);
}
});
// Adding
ObjectAnimator<Float> animIn =
new ObjectAnimator<Float>(transition.getDuration(LayoutTransition.APPEARING),
null, "rotationY", 90f, 0f);
transition.setAnimator(LayoutTransition.APPEARING, animIn);
animIn.addListener(new AnimatorListenerAdapter() {
public void onAnimationEnd(Animator anim) {
View view = (View) ((ObjectAnimator) anim).getTarget();
view.setRotationY(0f);
}
});
// Removing
ObjectAnimator<Float> animOut =
new ObjectAnimator<Float>(transition.getDuration(LayoutTransition.DISAPPEARING),
null, "rotationX", 0f, 90f);
transition.setAnimator(LayoutTransition.DISAPPEARING, animOut);
animIn.addListener(new AnimatorListenerAdapter() {
public void onAnimationEnd(Animator anim) {
View view = (View) ((ObjectAnimator) anim).getTarget();
view.setRotationX(0f);
}
});
}
}