转场动画相关
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一、系统自带动画效果
假如有 A 和 B 两个 Activity, 从 A 进入 B,调用<br />startActivity(Intent(this,AnimCutOutActivity::class.java))<br /> overridePendingTransition(android.R.anim.fade_in,android.R.anim.fade_out)
- 第一个动画android.R.anim.fade_in 表示 B 进入时的动画,第二个动画android.R.anim.fade_out 表示 A 退出时的动画。
从 B 退出进入 A, 调用<br />finish()<br /> overridePendingTransition(android.R.anim.fade_in,android.R.anim.fade_out)
- 第一个动画android.R.anim.fade_in 表示重新显示 A 的动画
- 第二个动画android.R.anim.fade_out 表示 B 退出的动画
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1.1 设置无动画效果
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<br />实现:
//进入的动画
startActivity(Intent(this,AnimCutOutActivity::class.java))
overridePendingTransition(0,0)
//退出时
finish()
overridePendingTransition(0,0)
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1.2 淡入淡出
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<br />实现:
startActivity(Intent(this,AnimCutOutActivity::class.java))
overridePendingTransition(android.R.anim.fade_in,android.R.anim.fade_out)
finish()
overridePendingTransition(android.R.anim.fade_in,android.R.anim.fade_out)
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1.3 左右交错
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<br />实现:
startActivity(Intent(this,AnimCutOutActivity::class.java))
overridePendingTransition(android.R.anim.slide_in_left,android.R.anim.slide_out_right)
finish()
overridePendingTransition(android.R.anim.slide_in_left,android.R.anim.slide_out_right)
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二、自定义简单转场动画
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2.1 淡入淡出
效果和上面系统自带的淡入淡出一样。<br />实现:
startActivity(Intent(this,AnimCutOutActivity::class.java))
overridePendingTransition(R.anim.activity_fade_in,R.anim.activity_fade_out)
finish()
overridePendingTransition(R.anim.activity_fade_in,R.anim.activity_fade_out)
activity_fade_in:
<?xml version="1.0" encoding="utf-8"?>
<alpha xmlns:android="http://schemas.android.com/apk/res/android"
android:fromAlpha="0"
android:toAlpha="1"
android:duration="@android:integer/config_longAnimTime">
</alpha>
activity_fade_out:
<?xml version="1.0" encoding="utf-8"?>
<alpha xmlns:android="http://schemas.android.com/apk/res/android"
android:duration="@android:integer/config_longAnimTime"
android:fromAlpha="1"
android:toAlpha="0">
</alpha>
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2.2 左进右出
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<br />实现:
startActivity(Intent(this,AnimCutOutActivity::class.java))
overridePendingTransition(R.anim.activity_slide_left_in,R.anim.activity_slide_right_out)
finish()
overridePendingTransition(R.anim.activity_slide_left_in,R.anim.activity_slide_right_out)
activity_slide_left_in:
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
<translate android:fromXDelta="-100%p" android:toXDelta="0"
android:duration="@android:integer/config_mediumAnimTime"/>
<alpha android:fromAlpha="0.0" android:toAlpha="1.0"
android:duration="@android:integer/config_mediumAnimTime" />
</set>
activity_slide_right_out:
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
<translate android:fromXDelta="0" android:toXDelta="100%p"
android:duration="@android:integer/config_mediumAnimTime"/>
<alpha android:fromAlpha="1.0" android:toAlpha="0.0"
android:duration="@android:integer/config_mediumAnimTime" />
</set>
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2.3 右进左出
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<br />实现:
startActivity(Intent(this,AnimCutOutActivity::class.java))
overridePendingTransition(R.anim.activity_slide_right_in,R.anim.activity_slide_left_out)
finish()
overridePendingTransition(R.anim.activity_slide_right_in,R.anim.activity_slide_left_out)
activity_slide_right_in:
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
<translate android:fromXDelta="100%p" android:toXDelta="0"
android:duration="@android:integer/config_mediumAnimTime"/>
<alpha android:fromAlpha="0.0" android:toAlpha="1.0"
android:duration="@android:integer/config_mediumAnimTime" />
</set>
activty_slide_left_out:
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
<translate android:fromXDelta="0" android:toXDelta="-100%p"
android:duration="@android:integer/config_mediumAnimTime"/>
<alpha android:fromAlpha="1.0" android:toAlpha="0.0"
android:duration="@android:integer/config_mediumAnimTime" />
</set>
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2.4 其他效果
基本都类似,有了这些动画以后就可以自由组合,实现自己想要的结果。下面实现一个常见的动画效果,进入时右进左出,退出时左进右出,效果如下:<br />
<br />实现:
startActivity(Intent(this,AnimCutOutActivity::class.java))
overridePendingTransition(R.anim.activity_slide_right_in,R.anim.activity_slide_left_out)
finish()
overridePendingTransition(R.anim.activity_slide_left_in,R.anim.activity_slide_right_out)
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三、通过windowAnimationStyle来实现
在styles 里的 Activity 主题上加上:
<style name="SlideRightLeft" parent="@android:style/Animation.Activity">
<item name="android:activityOpenEnterAnimation">@anim/activity_slide_right_in</item>
<item name="android:activityOpenExitAnimation">@anim/activity_slide_left_out</item>
<item name="android:activityCloseEnterAnimation">@anim/activity_slide_left_in</item>
<item name="android:activityCloseExitAnimation">@anim/activity_slide_right_out</item>
</style>
调用:
<style name="AppThemeAnim" parent="Theme.AppCompat.Light.NoActionBar">
<!-- Customize your theme here. -->
<item name="colorPrimary">@color/colorPrimary</item>
<item name="colorPrimaryDark">@color/blue_74D3FF</item>
<item name="colorAccent">@color/colorAccent</item>
<item name="android:windowAnimationStyle">@style/SlideRightLeft</item>
</style>
- 在A启动B时:<br />activityOpenEnterAnimation:B进入的动画<br />android:activityOpenExitAnimation:A退出的动画
- 在B后退回A时:<br />activityCloseEnterAnimation:A重新进入的动画<br />activityCloseExitAnimation:B退出的动画
和代码实现效果一样,都是四个动画。
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四、更复杂的动画效果
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