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2023-12-12 09:00:00

用上下滑动动画显示和隐藏视图

我有一个线性布局，我想显示或隐藏与动画，推动布局向上或向下每当我改变其可见性。

我在那里看过一些样品，但没有一个适合我的需要。

我已经为动画创建了两个xml文件，但我不知道当我改变线性布局的可见性时如何启动它们。

当前回答

随着Android 3.0 (Honeycomb)引入的新动画API，创建这样的动画非常简单。

将视图向下滑动一段距离:

view.animate().translationY(distance);

你可以稍后将视图滑回原来的位置，如下所示:

view.animate().translationY(0);

您还可以轻松地组合多个动画。下面的动画会将一个视图按高度向下滑动，同时淡入:

// Prepare the View for the animation
view.setVisibility(View.VISIBLE);
view.setAlpha(0.0f);

// Start the animation
view.animate()
    .translationY(view.getHeight())
    .alpha(1.0f)
    .setListener(null);

然后，您可以将视图淡出，并将其滑回原始位置。我们还设置了一个AnimatorListener，这样我们可以在动画完成后将视图的可见性设置为GONE:

view.animate()
    .translationY(0)
    .alpha(0.0f)
    .setListener(new AnimatorListenerAdapter() {
        @Override
        public void onAnimationEnd(Animator animation) {
            super.onAnimationEnd(animation);
            view.setVisibility(View.GONE);
        }
    });
2013-11-04 10:44:40

其他回答

我有一个角落的情况，我的视图高度仍然是0所以。

import android.animation.Animator;
import android.animation.AnimatorListenerAdapter;
import android.view.View;

public final class AnimationUtils {

  public static void slideDown(final View view) {
        view.animate()
                .translationY(view.getHeight())
                .alpha(0.f)
                .setListener(new AnimatorListenerAdapter() {
                    @Override
                    public void onAnimationEnd(Animator animation) {
                        // superfluous restoration
                        view.setVisibility(View.GONE);
                        view.setAlpha(1.f);
                        view.setTranslationY(0.f);
                    }
                });
    }

    public static void slideUp(final View view) {
        view.setVisibility(View.VISIBLE);
        view.setAlpha(0.f);

        if (view.getHeight() > 0) {
            slideUpNow(view);
        } else {
            // wait till height is measured
            view.post(new Runnable() {
                @Override
                public void run() {
                    slideUpNow(view);
                }
            });
        }
    }

    private static void slideUpNow(final View view) {
        view.setTranslationY(view.getHeight());
        view.animate()
                .translationY(0)
                .alpha(1.f)
                .setListener(new AnimatorListenerAdapter() {
                    @Override
                    public void onAnimationEnd(Animator animation) {
                        view.setVisibility(View.VISIBLE);
                        view.setAlpha(1.f);
                    }
                });
    }

}
2017-06-29 06:52:15

其中一个简单的方法是:

containerView.setLayoutTransition(LayoutTransition())
containerView.layoutTransition.enableTransitionType(LayoutTransition.CHANGING)
2020-05-08 16:32:37

Suragch用科特林语回答。这对我很管用。

class MainActivity : AppCompatActivity() {

var isUp: Boolean = false

override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    setContentView(R.layout.activity_main)

    var myView: View = findViewById(R.id.my_view)
    var myButton: Button = findViewById(R.id.my_button)

    //Initialize as invisible
    myView.visibility = View.INVISIBLE
    myButton.setText("Slide up")

    isUp = false

}


fun View.slideUp(duration: Int = 500){
    visibility = View.VISIBLE
    val animate = TranslateAnimation(0f, 0f, this.height.toFloat(), 0f)
    animate.duration = duration.toLong()
    animate.fillAfter = true
    this.startAnimation(animate)
}

fun View.slideDown(duration: Int = 500) {
    visibility = View.VISIBLE
    val animate = TranslateAnimation(0f, 0f, 0f, this.height.toFloat())
    animate.duration = duration.toLong()
    animate.fillAfter = true
    this.startAnimation(animate)
}

fun onSlideViewButtonClick(view: View){
    if(isUp){
        my_view.slideDown()
        my_button.setText("Slide Up")

    }
    else{
        my_view.slideUp()
        my_button.setText("Slide Down")
    }
    isUp = !isUp
}

}

2019-01-10 22:06:05

一个完整的答案，在onClick中切换视图可见性，也翻转箭头，并在隐藏组件时平滑地向上移动其他视图。

private fun toggleRecyclerViewVisibility(
    recyclerView: RecyclerView,
    container: FrameLayout,
    arrow: ImageView
) {
    //toggle arrow direction, also block user clicks until animation finishes.
    arrow
        .animate()
        .rotation(
            if (arrow.rotation == 0F)
                180F
            else 0F
        )
        .withStartAction { container.isClickable = false }
        .withEndAction { container.isClickable = true }
        .start()

    //toggle recyclerview visibility with animation.
    with(recyclerView) {
        var cof = -1
        var vis = View.GONE
        var alph = 0F

        if (visibility == View.GONE) {
            cof = 0
            vis = View.VISIBLE
            alph = 1F
        }
        animate()
            .translationY(height.toFloat() * cof)
            .alpha(alph)
            .withStartAction {//in case showing the recyclerview show it at the beginning.
                if (vis == View.VISIBLE)
                    visibility = View.VISIBLE
            }
            .withEndAction {//in case hiding the recyclerview hide it at the end.
                if (vis == View.GONE)
                    visibility = View.GONE
            }
            .start()
    }
}

视图是这样的

        <LinearLayout
            android:id="@+id/subRootLinearView"
            android:animateLayoutChanges="true"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="vertical">

            <!--other views-->
            <LinearLayout
                android:id="@+id/Container"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:orientation="vertical">

                <FrameLayout
                    android:id="@+id/header"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:background="@color/backgroundGray"
                    android:padding="16dp">

                    <TextView
                        android:id="@+id/text_view"
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:text="@string/awaitingConfirmation"
                        android:textColor="@color/colorText"
                        android:textSize="16sp" />

                    <ImageView
                        android:id="@+id/arrow_image_view"
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:layout_gravity="end|center"
                        android:src="@drawable/ic_arrow" />
                </FrameLayout>

                <LinearLayout
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:orientation="vertical">

                    <androidx.recyclerview.widget.RecyclerView
                        android:id="@+id/recycler"
                        android:layout_width="match_parent"
                        android:layout_height="wrap_content"
                        app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager" />
                </LinearLayout>
            </LinearLayout>

            <!--other views-->
            </LinearLayout>

然后在代码中首先添加这一行，这解决了animateLayoutChanges在大嵌套视图中不工作的问题，这基本上使其他视图在隐藏recyclerview时平滑地向上移动

subRootLinearView.layoutTransition.enableTransitionType(LayoutTransition.CHANGING)

你的父线性布局也应该包含这个属性

android:animateLayoutChanges="true"

然后用视图调用该方法

 toggleRecyclerViewVisibility(
                    recycler,
                    header,
                    arrowImageView
                )
2021-07-28 06:38:02

现在可见性改变动画应该通过过渡API来完成，该API在支持(androidx)包中可用。只需调用TransitionManager。beginDelayedTransition方法使用Slide过渡，然后改变视图的可见性。

import androidx.transition.Slide;
import androidx.transition.Transition;
import androidx.transition.TransitionManager;

private void toggle(boolean show) {
    View redLayout = findViewById(R.id.redLayout);
    ViewGroup parent = findViewById(R.id.parent);

    Transition transition = new Slide(Gravity.BOTTOM);
    transition.setDuration(600);
    transition.addTarget(R.id.redLayout);

    TransitionManager.beginDelayedTransition(parent, transition);
    redLayout.setVisibility(show ? View.VISIBLE : View.GONE);
}

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/parent"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <Button
        android:id="@+id/btn"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="play" />

    <LinearLayout
        android:id="@+id/redLayout"
        android:layout_width="match_parent"
        android:layout_height="400dp"
        android:background="#5f00"
        android:layout_alignParentBottom="true" />
</RelativeLayout>

用另一个默认和自定义转换示例检查这个答案。

2019-05-15 08:04:20

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