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Android实现卡片翻转动画

2017-01-21 16:27 761 查看

最近项目上用到了卡片的翻转效果，大致研究了下，也参考了网上的一些Demo，简单实现如下：

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/card_main_container"
android:layout_height="match_parent"
android:layout_width="match_parent">
<include layout="@layout/activity_card_back"/>
<include layout="@layout/activity_card_front"/>
</FrameLayout>

可以看出，用到了两个布局

activity_card_back.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/card_back_container"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginLeft="@dimen/activity_horizontal_margin"
android:layout_marginTop="@dimen/activity_vertical_margin"
android:layout_marginRight="@dimen/activity_horizontal_margin"
android:layout_marginBottom="@dimen/activity_vertical_margin"
android:background="@drawable/shape_card_back_bg"
android:orientation="vertical">
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:text="背面"
android:textSize="30sp"/>
</LinearLayout>

activity_card_front.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/card_font_container"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginLeft="@dimen/activity_horizontal_margin"
android:layout_marginTop="@dimen/activity_vertical_margin"
android:layout_marginRight="@dimen/activity_horizontal_margin"
android:layout_marginBottom="@dimen/activity_vertical_margin"
android:background="@drawable/shape_card_front_bg"
android:orientation="vertical">
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:text="正面"
android:textSize="30sp"/>
</LinearLayout>

附上自定义的图片：
shape_card_back_bg.xml

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
<corners android:radius="30dp"/>
<solid android:color="@android:color/holo_red_light"/>
</shape>

shape_card_front_bg.xml

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
<corners android:radius="30dp"/>
<solid android:color="@android:color/darker_gray"/>
</shape>

主要的逻辑如下：

package com.jackie.flipanimationdemo;
import android.animation.Animator;
import android.animation.AnimatorInflater;
import android.animation.AnimatorListenerAdapter;
import android.animation.AnimatorSet;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.FrameLayout;
import android.widget.LinearLayout;
public class MainActivity extends AppCompatActivity implements View.OnClickListener {
private FrameLayout mCardMainContainer;
private LinearLayout mCardFontContainer, mCardBackContainer;
private AnimatorSet mRightOutAnimatorSet, mLeftInAnimatorSet;
private boolean mIsShowBack = false; //是否显示背面
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initView();
initEvent();
}
private void initView() {
mCardMainContainer = (FrameLayout) findViewById(R.id.card_main_container);
mCardFontContainer = (LinearLayout) findViewById(R.id.card_font_container);
mCardBackContainer = (LinearLayout) findViewById(R.id.card_back_container);
setAnimators(); // 设置动画
setCameraDistance(); // 设置镜头距离
}
private void initEvent() {
mCardMainContainer.setOnClickListener(this);
}
private void setAnimators() {
mRightOutAnimatorSet = (AnimatorSet) AnimatorInflater.loadAnimator(this, R.animator.anim_right_out);
mLeftInAnimatorSet = (AnimatorSet) AnimatorInflater.loadAnimator(this, R.animator.anim_left_in);
// 设置点击事件
mRightOutAnimatorSet.addListener(new AnimatorListenerAdapter() {
@Override
public void onAnimationStart(Animator animation) {
super.onAnimationStart(animation);
mCardMainContainer.setClickable(false);
}
});
mLeftInAnimatorSet.addListener(new AnimatorListenerAdapter() {
@Override
public void onAnimationEnd(Animator animation) {
super.onAnimationEnd(animation);
mCardMainContainer.setClickable(true);
}
});
}
private void setCameraDistance() {
int distance = 16000;
float scale = getResources().getDisplayMetrics().density * distance;
mCardFontContainer.setCameraDistance(scale);
mCardBackContainer.setCameraDistance(scale);
}
private void flipCard() {
if (!mIsShowBack) { // 正面朝上
mRightOutAnimatorSet.setTarget(mCardFontContainer);
mLeftInAnimatorSet.setTarget(mCardBackContainer);
mRightOutAnimatorSet.start();
mLeftInAnimatorSet.start();
mIsShowBack = true;
} else { // 背面朝上
mRightOutAnimatorSet.setTarget(mCardBackContainer);
mLeftInAnimatorSet.setTarget(mCardFontContainer);
mRightOutAnimatorSet.start();
mLeftInAnimatorSet.start();
mIsShowBack = false;
}
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.card_main_container:
flipCard();
break;
}
}
}

用到一些动画的资源：

anim_left_in.xml

<?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"/>
<!--旋转-->
<objectAnimator
android:duration="@integer/anim_length"
android:propertyName="rotationY"
android:valueFrom="-180"
android:valueTo="0"/>
<!--出现-->
<objectAnimator
android:duration="0"
android:propertyName="alpha"
android:startOffset="@integer/anim_half_length"
android:valueFrom="0.0"
android:valueTo="1.0"/>
</set>

anim_right_out.xml

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
<!--旋转-->
<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>

用到了属性动画，为了兼容性，别忘了如下配置：

效果图如下：

效果图：

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持脚本之家。

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