/*
* 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.AnimatorListenerAdapter;
import android.animation.Animator;
import android.animation.ObjectAnimator;
import android.view.animation.AccelerateInterpolator;
import android.view.animation.DecelerateInterpolator;
import android.view.animation.Interpolator;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import com.example.android.apis.R;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.SeekBar;
/**
* 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.
*/
public class ListFlipper extends Activity {
private static final int DURATION = 1500;
private SeekBar mSeekBar;
private static final String[] LIST_STRINGS_EN = new String[] {
"One",
"Two",
"Three",
"Four",
"Five",
"Six"
};
private static final String[] LIST_STRINGS_FR = new String[] {
"Un",
"Deux",
"Trois",
"Quatre",
"Le Five",
"Six"
};
ListView mEnglishList;
ListView mFrenchList;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
//FrameLayout container = (LinearLayout) findViewById(R.id.container);
mEnglishList = (ListView) findViewById(R.id.list_en);
mFrenchList = (ListView) findViewById(R.id.list_fr);
// Prepare the ListView
final ArrayAdapter adapterEn = new ArrayAdapter(this,
android.R.layout.simple_list_item_1, LIST_STRINGS_EN);
// Prepare the ListView
final ArrayAdapter adapterFr = new ArrayAdapter(this,
android.R.layout.simple_list_item_1, LIST_STRINGS_FR);
mEnglishList.setAdapter(adapterEn);
mFrenchList.setAdapter(adapterFr);
mFrenchList.setRotationY(-90f);
Button starter = (Button) findViewById(R.id.button);
starter.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
flipit();
}
});
}
private Interpolator accelerator = new AccelerateInterpolator();
private Interpolator decelerator = new DecelerateInterpolator();
private void flipit() {
final ListView visibleList;
final ListView invisibleList;
if (mEnglishList.getVisibility() == View.GONE) {
visibleList = mFrenchList;
invisibleList = mEnglishList;
} else {
invisibleList = mFrenchList;
visibleList = mEnglishList;
}
ObjectAnimator visToInvis = ObjectAnimator.ofFloat(visibleList, "rotationY", 0f, 90f);
visToInvis.setDuration(500);
visToInvis.setInterpolator(accelerator);
final ObjectAnimator invisToVis = ObjectAnimator.ofFloat(invisibleList, "rotationY",
-90f, 0f);
invisToVis.setDuration(500);
invisToVis.setInterpolator(decelerator);
visToInvis.addListener(new AnimatorListenerAdapter() {
@Override
public void onAnimationEnd(Animator anim) {
visibleList.setVisibility(View.GONE);
invisToVis.start();
invisibleList.setVisibility(View.VISIBLE);
}
});
visToInvis.start();
}
}
//main.xml
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
android:id="@+id/button"
android:text="Flip"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
android:id="@+id/list_en"
android:layout_width="match_parent"
android:layout_weight="1.0"
android:layout_height="0dip"/>
android:id="@+id/list_fr"
android:layout_width="match_parent"
android:layout_weight="1.0"
android:layout_height="0dip"
android:visibility="gone"/>