［積累 https://github.com/yayaa/Rotatable]
[轉(zhuǎn)載 http://www.reibang.com/p/7db8425e84fc]
749674-89be3fa5b7608647.gif
- 首頁
首頁由正面和背面兩張卡片組成, 同時(shí), 設(shè)置點(diǎn)擊事件flipCard.
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout
android:id="@+id/main_fl_container"
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:onClick="flipCard"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="me.chunyu.spike.wcl_flip_anim_demo.MainActivity">
<include
layout="@layout/cell_card_back"/>
<include
layout="@layout/cell_card_front"/>
</FrameLayout>
邏輯, 初始化動(dòng)畫和鏡頭距離.
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ButterKnife.bind(this);
setAnimators(); // 設(shè)置動(dòng)畫
setCameraDistance(); // 設(shè)置鏡頭距離
}
邏輯, 初始化動(dòng)畫和鏡頭距離.
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ButterKnife.bind(this);
setAnimators(); // 設(shè)置動(dòng)畫
setCameraDistance(); // 設(shè)置鏡頭距離
}
- 動(dòng)畫
初始化右出(RightOut)和左入(LeftIn)動(dòng)畫, 使用動(dòng)畫集合AnimatorSet.
當(dāng)右出動(dòng)畫開始時(shí), 點(diǎn)擊事件無效, 當(dāng)左入動(dòng)畫結(jié)束時(shí), 點(diǎn)擊事件恢復(fù).
// 設(shè)置動(dòng)畫
private void setAnimators() {
mRightOutSet = (AnimatorSet) AnimatorInflater.loadAnimator(this, R.animator.anim_out);
mLeftInSet = (AnimatorSet) AnimatorInflater.loadAnimator(this, R.animator.anim_in);
// 設(shè)置點(diǎn)擊事件
mRightOutSet.addListener(new AnimatorListenerAdapter() {
@Override public void onAnimationStart(Animator animation) {
super.onAnimationStart(animation);
mFlContainer.setClickable(false);
}
});
mLeftInSet.addListener(new AnimatorListenerAdapter() {
@Override public void onAnimationEnd(Animator animation) {
super.onAnimationEnd(animation);
mFlContainer.setClickable(true);
}
});
}
右出動(dòng)畫
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
<!--旋轉(zhuǎn)-->
<objectAnimator
android:duration="@integer/anim_length"
android:propertyName="rotationY"
android:valueFrom="0"
android:valueTo="180"/>
<!--消失-->
<objectAnimator
android:duration="0"
android:propertyName="alpha"
android:startOffset="@integer/anim_half_length"
android:valueFrom="1.0"
android:valueTo="0.0"/>
</set>
旋轉(zhuǎn)180°, 當(dāng)旋轉(zhuǎn)一半時(shí), 卡片消失.
左入動(dòng)畫
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
<!--消失-->
<objectAnimator
android:duration="0"
android:propertyName="alpha"
android:valueFrom="1.0"
android:valueTo="0.0"/>
<!--旋轉(zhuǎn)-->
<objectAnimator
android:duration="@integer/anim_length"
android:propertyName="rotationY"
android:valueFrom="-180"
android:valueTo="0"/>
<!--出現(xiàn)-->
<objectAnimator
android:duration="0"
android:propertyName="alpha"
android:startOffset="@integer/anim_half_length"
android:valueFrom="0.0"
android:valueTo="1.0"/>
</set>
在開始時(shí)是隱藏, 逆向旋轉(zhuǎn), 當(dāng)旋轉(zhuǎn)一半時(shí), 顯示卡片.
- 鏡頭視角
改變視角, 涉及到旋轉(zhuǎn)卡片的Y軸, 即rotationY, 需要修改視角距離.
如果不修改, 則會(huì)超出屏幕高度, 影響視覺體驗(yàn).
// 改變視角距離, 貼近屏幕
private void setCameraDistance() {
int distance = 16000;
float scale = getResources().getDisplayMetrics().density * distance;
mFlCardFront.setCameraDistance(scale);
mFlCardBack.setCameraDistance(scale);
}
- 旋轉(zhuǎn)控制
設(shè)置右出和左入動(dòng)畫的目標(biāo)控件, 兩個(gè)動(dòng)畫同步進(jìn)行, 并區(qū)分正反面朝上.
// 翻轉(zhuǎn)卡片
public void flipCard(View view) {
// 正面朝上
if (!mIsShowBack) {
mRightOutSet.setTarget(mFlCardFront);
mLeftInSet.setTarget(mFlCardBack);
mRightOutSet.start();
mLeftInSet.start();
mIsShowBack = true;
} else { // 背面朝上
mRightOutSet.setTarget(mFlCardBack);
mLeftInSet.setTarget(mFlCardFront);
mRightOutSet.start();
mLeftInSet.start();
mIsShowBack = false;
}
}
