动画相关Android技术知识Android开发经验谈

Android - Activity切换动画

2018-01-03  本文已影响497人  Allens_Jiang
老婆保佑,代码无BUG

目录


一:5.0之前的实现效果

Untitled4.gif

1. 实现

(1) 添加动画

屏幕快照 2017-04-07 下午1.39.54.png

anim_enter

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
    android:interpolator="@android:anim/decelerate_interpolator">
    <translate
        android:duration="@android:integer/config_mediumAnimTime"
        android:fromXDelta="100%p"
        android:toXDelta="0%p" />
    <!--<alpha-->
    <!--android:duration="@android:integer/config_mediumAnimTime"-->
    <!--android:fromAlpha="0.0"-->
    <!--android:toAlpha="1.0" />-->
</set>

anim_exit


<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
    android:interpolator="@android:anim/decelerate_interpolator">
    <translate
        android:duration="@android:integer/config_mediumAnimTime"
        android:fromXDelta="0%p"
        android:toXDelta="-100%p" />
    <!--<alpha-->
    <!--android:duration="@android:integer/config_mediumAnimTime"-->
    <!--android:fromAlpha="1.0"-->
    <!--android:toAlpha="0.0" />-->

</set>

back_enter

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
    <scale
        android:duration="@android:integer/config_mediumAnimTime"
        android:fromXScale="1.5"
        android:fromYScale="1.5"
        android:pivotX="50.0%"
        android:pivotY="50.0%"
        android:toXScale="1.0"
        android:toYScale="1.0" />
    <alpha
        android:duration="@android:integer/config_mediumAnimTime"
        android:fromAlpha="0.4"
        android:toAlpha="1.0" />
</set>

back_exit

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
    <scale
        android:duration="@android:integer/config_mediumAnimTime"
        android:fromXScale="1.0"
        android:fromYScale="1.0"
        android:pivotX="50.0%"
        android:pivotY="50.0%"
        android:toXScale="0.4"
        android:toYScale="0.4" />
    <alpha android:duration="@android:integer/config_mediumAnimTime" android:fromAlpha="1.0" android:toAlpha="0.0" />

</set>

(2) 在下面的styles 中添加样式

屏幕快照 2017-04-07 下午1.44.20.png
  <!-- Base application theme. -->
    <style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
        <!-- Customize your theme here. -->
        <item name="android:fitsSystemWindows">true</item>
        <item name="colorPrimary">@color/colorPrimary</item>
        <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
        <item name="colorAccent">@color/colorAccent</item>
        <item name="android:windowAnimationStyle">@style/fade</item>
    </style>

    <!-- activiy  切换动画  -->
    <style name="fade" parent="@android:style/Animation.Activity">
        <item name="android:activityOpenEnterAnimation">@anim/anim_enter</item>
        <item name="android:activityOpenExitAnimation">@anim/anim_exit</item>
        <item name="android:activityCloseEnterAnimation">@anim/back_enter</item>
        <item name="android:activityCloseExitAnimation">@anim/back_exit</item>
    </style>

(3) 解释说明

android:activityOpenExitAnimation
当我们从 A1 启动 A2 时,A1 从屏幕上消失

android:activityOpenEnterAnimation
当我们从 A1 启动 A2 时,A2 出现在屏幕上

android:activityCloseExitAnimation
当我们从 A2 退出回到 A1 时,A2 从屏幕上消失

android:activityCloseEnterAnimation
当我们从 A2 退出回到 A1 时,A1 出现在屏幕上


二: 5.0之后如何实现

1. 分解、滑动进入、淡入淡出

将原先的跳转改成如下方式

 findViewById(R.id.btn).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(MainActivity.this, Act2.class);
                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
                    startActivity(intent, ActivityOptions.makeSceneTransitionAnimation(MainActivity.this).toBundle());
                } else {
                    startActivity(intent);
                }
            }
        });

修改第二个Activity

package com.allens.intent2demo;

import android.os.Build;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.annotation.RequiresApi;
import android.support.v7.app.AppCompatActivity;
import android.transition.Explode;
import android.transition.Fade;
import android.transition.Slide;
import android.transition.Transition;
import android.view.Window;

/**
 * 描述:
 * <p>
 * Created by allens on 2018/1/3.
 */

public class Act2 extends AppCompatActivity {
    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
            // 设置contentFeature,可使用切换动画
            getWindow().requestFeature(Window.FEATURE_CONTENT_TRANSITIONS);
//            init_explode();// 分解
//            init_Slide();//滑动进入
            init_fade();//淡入淡出
        }
        setContentView(R.layout.activity_2);
    }

    @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
    private void init_fade() {
        Transition transition = new Fade().setDuration(200);
        getWindow().setEnterTransition(transition);
        getWindow().setExitTransition(transition);
    }

    @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
    private void init_Slide() {
        Transition transition = new Slide().setDuration(200);
        getWindow().setEnterTransition(transition);
        getWindow().setExitTransition(transition);
    }

    @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
    private void init_explode() {
        Explode explode = new Explode();
        explode.setDuration(200);
        getWindow().setEnterTransition(explode);
    }
}


注意,一定要在加载布局之前设置,判断一下版本号,5.0之后才有

分解 滑动进入 淡入淡出.gif

2. 共享元素动画

修改Activity

package com.allens.intent2demo;

import android.app.ActivityOptions;
import android.content.Intent;
import android.os.Build;
import android.support.annotation.RequiresApi;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Pair;
import android.view.View;
import android.widget.Button;

public class MainActivity extends AppCompatActivity {

    private Button btn;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        btn = findViewById(R.id.btn);
        btn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(MainActivity.this, Act2.class);
                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
                    Pair<View, String> pair1 = Pair.create(((View) btn), "mybtn");
                    startActivity(intent, ActivityOptions.makeSceneTransitionAnimation(MainActivity.this, pair1).toBundle());
                } else {
                    startActivity(intent);
                }
            }
        });
    }
}

修改第一个activity 中的 xml

需要共享的元素加上android:transitionName
例如

<Button
        android:id="@+id/btn"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="共享元素动画"
        android:transitionName="mybtn"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

修改第二个activity中的Button 同样加上

 android:transitionName="mybtn"

如果需要共享多个控件

使用

startSharedElementAnimation(Window window,
            Pair<View, String>... sharedElements)

例如

 Pair<View, String> pair1 = Pair.create(((View) btn), "mybtn");
 Pair<View, String> pair2 = Pair.create(((View) btn), "mybtn1");
 startActivity(intent, ActivityOptions.makeSceneTransitionAnimation(MainActivity.this, pair1,pair2).toBundle());
Untitled11.gif

感谢

http://blog.csdn.net/u012702547/article/details/51289789

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