Android 如何实现从右到左的动画开始活动

How to achieve right to left animation to start the activity

提问by N Sharma

I am working on one demo application where I want to apply animation whenever app start any activity. I wrote below code but this is for to animate the activity from left to right.

我正在开发一个演示应用程序，我想在应用程序启动任何activity. 我写了下面的代码，但这是为了从左到右为活动设置动画。

left_to_right.xml

left_to_right.xml

<?xml version="1.0" encoding="utf-8"?>

<set xmlns:android="http://schemas.android.com/apk/res/android"
    android:shareInterpolator="false">
    <translate android:fromXDelta="-100%" android:toXDelta="0%"
        android:fromYDelta="0%" android:toYDelta="0%"
        android:duration="500"/>
</set>

right_to_left.xml

right_to_left.xml

<?xml version="1.0" encoding="utf-8"?>

<set xmlns:android="http://schemas.android.com/apk/res/android"
    android:shareInterpolator="false">
    <translate
        android:duration="500"
        android:fromXDelta="0%"
        android:fromYDelta="0%"
        android:toXDelta="100%"
        android:toYDelta="0%" />
</set>

I am here starting an activitylike this

我在这里开始activity这样的

startActivity(new Intent(this, LoginActivity.class));
overridePendingTransition(R.anim.left_to_right, R.anim.right_to_left);

I want to achieve an animation right to left. How this can be done.

我想实现从右到左的动画。如何做到这一点。

Thanks in advance.

提前致谢。

回答by Mike

Do these modifications to your animation files:

对动画文件进行以下修改：

enter.xml:

输入.xml：

<?xml version="1.0" encoding="utf-8"?>

<set xmlns:android="http://schemas.android.com/apk/res/android"
    android:shareInterpolator="false">
    <translate
        android:duration="500"
        android:fromXDelta="100%"
        android:fromYDelta="0%"
        android:toXDelta="0%"
        android:toYDelta="0%" />
</set>

exit.xml:

退出.xml：

<?xml version="1.0" encoding="utf-8"?>

<set xmlns:android="http://schemas.android.com/apk/res/android"
    android:shareInterpolator="false">
    <translate
        android:duration="500"
        android:fromXDelta="0%"
        android:fromYDelta="0%"
        android:toXDelta="-100%"
        android:toYDelta="0%" />
</set>

You'll have your second activity sliding in from right to the left.

您的第二个活动将从右向左滑动。

For a better understanding on how to play around with the fromXDelta and toXDelta values for the animations, here is a very basic illustration on the values:

为了更好地理解如何处理动画的 fromXDelta 和 toXDelta 值，这里有一个非常基本的值说明：

This way you can easily understand why you add android:fromXDelta="0%" and android:toXDelta="-100%" for your current activity. And this is because you want it to go from 0% to the -100% position.

通过这种方式，您可以轻松理解为什么要为当前活动添加 android:fromXDelta="0%" 和 android:toXDelta="-100%"。这是因为您希望它从 0% 到 -100% 的位置。

[EDIT]

[编辑]

So if you want to open ActivityB from ActivityA you do the following(let's say you have a button):

因此，如果您想从 ActivityA 打开 ActivityB，请执行以下操作（假设您有一个按钮）：

button.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            startActivity(new Intent(ActivityA.this, ActivityB.class));
            overridePendingTransition(R.anim.enter, R.anim.exit);
        }
    });

Now, if you want to have the "backwards" animation of the first one, when you leave Activity B, you'll need 2 new animation files and some code in the ActivityB's onBackPressed method, like this:

现在，如果您想拥有第一个的“向后”动画，当您离开 Activity B 时，您将需要 2 个新动画文件和 ActivityB 的 onBackPressed 方法中的一些代码，如下所示：

First the animation files: left_to_right.xml:

首先是动画文件：left_to_right.xml：

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
    android:shareInterpolator="false">
    <translate
        android:duration="500"
        android:fromXDelta="-100%"
        android:fromYDelta="0%"
        android:toXDelta="0%"
        android:toYDelta="0%" />
</set>

right_to_left.xml:

right_to_left.xml：

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
    android:shareInterpolator="false">
    <translate
        android:duration="500"
        android:fromXDelta="0%"
        android:fromYDelta="0%"
        android:toXDelta="100%"
        android:toYDelta="0%" />
</set>

And in ActivityB do the following:

在 ActivityB 中执行以下操作：

@Override
public void onBackPressed() {
    super.onBackPressed();
    overridePendingTransition(R.anim.left_to_right, R.anim.right_to_left);
}

Also if you have up navigation enabled, you'll have to add the animation in this case as well:

此外，如果您启用了向上导航，则在这种情况下还必须添加动画：

You enable UP navigation like this:

您可以像这样启用 UP 导航：

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    getActionBar().setDisplayHomeAsUpEnabled(true);
}

And this is how you handle the animation in this case too:

在这种情况下，这也是您处理动画的方式：

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    switch (item.getItemId()) {
    // Respond to the action bar's Up/Home button
    case android.R.id.home:
       //NavUtils.navigateUpFromSameTask(this);
       finish();
       overridePendingTransition(R.anim.left_to_right, R.anim.right_to_left);
       return true;
    }
    return super.onOptionsItemSelected(item);
}

Also be aware that even if your code is okay, your phone might have animation turned off. To turn then on do the following:

另请注意，即使您的代码没问题，您的手机也可能关闭了动画。要打开然后执行以下操作：

1. Open Settings and go to Developer Options
2. Make sure it is enabled (By sliding the toggle button on the top right)
3. Scroll down and under Drawing, tap these options one by one: Windows animation scale, Transition animation scale, and Animator duration scale
4. Select "Animation scale 1x"

1. 打开设置并转到开发人员选项
2. 确保它已启用（通过滑动右上角的切换按钮）
3. 向下滚动并在“绘图”下，一一点击这些选项：Windows 动画比例、过渡动画比例和 Animator 持续时间比例
4. 选择“动画比例 1x”

Does this help?

这有帮助吗？

回答by soundsofpolaris

overridePendingTransitionshould be called in the "target" activity. For example: Going from Activity A -> B, you would put the overridePendingTransitioncall in the onCreateof Activity B.

overridePendingTransition应该在“目标”活动中调用。例如：从 Activity A -> B 开始，您将overridePendingTransition调用放在onCreateActivity B 的 中。

Keep in mind, if the user has disabled animation on a system level, you can't force animations to show.

请记住，如果用户在系统级别禁用了动画，则无法强制显示动画。

EDIT:

编辑：

An example would look like this:

一个示例如下所示：

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    overridePendingTransition(R.anim.enter, R.anim.exit);
}

回答by Maulik Patel

This is the perfect code for me Slideinleft

这对我来说是完美的代码 Slideinleft

<?xml version="1.0" encoding="utf-8"?>
<translate xmlns:android="http://schemas.android.com/apk/res/android"
    android:fromXDelta="100%p"
    android:toXDelta="0"
    android:duration="800"/>

Slideinright

向右滑动

<?xml version="1.0" encoding="utf-8"?>
<translate xmlns:android="http://schemas.android.com/apk/res/android"
    android:fromXDelta="0"
    android:toXDelta="-100%p"
    android:duration="800"/>

In Activity

活动中

Intent intent = new Intent(getApplicationContext(),termcondionactivity.class);
Bundle bndlAnimation = ActivityOptions.makeCustomAnimation(getApplicationContext(), R.anim.slideinleft, R.anim.slideinright).toBundle();

startActivity(intent, bndlAnimation);

回答by saranya

Try this code, it's working for me

试试这个代码，它对我有用

To slide from right to left

从右向左滑动

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
    android:fillAfter="true" >
    <translate
        xmlns:android="http://schemas.android.com/apk/res/android"
        android:duration="500"
        android:fromXDelta="0%"
        android:toXDelta="-50%" >
    </translate>
</set>

To slide from left to right

从左向右滑动

<?xml version="1.0" encoding="utf-8"?>
<translate xmlns:android="http://schemas.android.com/apk/res/android"
    android:duration="500"
    android:fromXDelta="-50%"
    android:toXDelta="0%" >
</translate>