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

使用ObjectAnimator

private fun slideDown(view: View) {
    val height = view.height
    ObjectAnimator.ofFloat(view, View.TRANSLATION_Y, 0f, height.toFloat()).apply {
        duration = 1000
        start()
    }
}

private fun slideUp(view: View) {
    val height = view.height
    ObjectAnimator.ofFloat(view, View.TRANSLATION_Y, height.toFloat(), 0f)).apply {
        duration = 1000
        start()
    }
}

2020-01-05 16:33:30

其他回答

使用ObjectAnimator

private fun slideDown(view: View) {
    val height = view.height
    ObjectAnimator.ofFloat(view, View.TRANSLATION_Y, 0f, height.toFloat()).apply {
        duration = 1000
        start()
    }
}

private fun slideUp(view: View) {
    val height = view.height
    ObjectAnimator.ofFloat(view, View.TRANSLATION_Y, height.toFloat(), 0f)).apply {
        duration = 1000
        start()
    }
}

2020-01-05 16:33:30

其中一个简单的方法是:

containerView.setLayoutTransition(LayoutTransition())
containerView.layoutTransition.enableTransitionType(LayoutTransition.CHANGING)

2020-05-08 16:32:37

如果你想同时显示/隐藏多个视图，你可以使用TransitionSet(因为你不能同时播放2个“单个”过渡)

fun slideTopBottomVisibility(topLayout: View, bottomLayout: View, show: Boolean) {
    val topTransition: Transition = Slide(Gravity.TOP)
    topTransition.duration = 600
    topTransition.addTarget(topLayout)

    val bottomTransition: Transition = Slide(Gravity.BOTTOM)
    bottomTransition.duration = 600
    bottomTransition.addTarget(bottomLayout)

    val transitionSet = TransitionSet()
    transitionSet.addTransition(topTransition)
    transitionSet.addTransition(bottomTransition)

    TransitionManager.beginDelayedTransition(topLayout.parent as ViewGroup, transitionSet)
    topLayout.visibility = if (show) View.VISIBLE else View.GONE
    bottomLayout.visibility = if (show) View.VISIBLE else View.GONE
}

2022-05-02 13:42:42

这里有另一种方法来处理多个按钮(在这个例子中是ImageView)

MainActivity.java

findViewById(R.id.arrowIV).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                if (strokeWidthIV.getAlpha() == 0f) {
                    findViewById(R.id.arrowIV).animate().rotationBy(180);

                    strokeWidthIV.animate().translationXBy(-120 * 4).alpha(1f);
                    findViewById(R.id.colorChooseIV).animate().translationXBy(-120 * 3).alpha(1f);
                    findViewById(R.id.saveIV).animate().translationXBy(-120 * 2).alpha(1f);
                    findViewById(R.id.clearAllIV).animate().translationXBy(-120).alpha(1f);
                } else {
                    findViewById(R.id.arrowIV).animate().rotationBy(180);

                    strokeWidthIV.animate().translationXBy(120 * 4).alpha(0f);
                    findViewById(R.id.colorChooseIV).animate().translationXBy(120 * 3).alpha(0f);
                    findViewById(R.id.saveIV).animate().translationXBy(120 * 2).alpha(0f);
                    findViewById(R.id.clearAllIV).animate().translationXBy(120).alpha(0f);
                }
            }
        });

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
 xmlns:app="http://schemas.android.com/apk/res-auto"
 xmlns:tools="http://schemas.android.com/tools"
 android:layout_width="match_parent"
 android:layout_height="match_parent"
 tools:context=".activity.MainActivity">

 <ImageView
     android:id="@+id/strokeWidthIV"
     android:layout_width="48dp"
     android:layout_height="48dp"
     android:layout_margin="8dp"
     android:alpha="0"
     android:contentDescription="Clear All"
     android:padding="4dp"
     android:scaleType="fitXY"
     android:src="@drawable/ic_edit"
     app:layout_constraintEnd_toEndOf="parent"
     app:layout_constraintTop_toTopOf="parent"
     tools:ignore="HardcodedText" />

 <ImageView
     android:id="@+id/colorChooseIV"
     android:layout_width="48dp"
     android:layout_height="48dp"
     android:layout_margin="8dp"
     android:alpha="0"
     android:contentDescription="Clear All"
     android:padding="4dp"
     android:scaleType="fitXY"
     android:src="@drawable/ic_palette"
     app:layout_constraintEnd_toEndOf="parent"
     app:layout_constraintTop_toTopOf="parent"
     tools:ignore="HardcodedText" />

 <ImageView
     android:id="@+id/saveIV"
     android:layout_width="48dp"
     android:layout_height="48dp"
     android:layout_margin="8dp"
     android:alpha="0"
     android:contentDescription="Clear All"
     android:padding="4dp"
     android:scaleType="fitXY"
     android:src="@drawable/ic_save"
     app:layout_constraintEnd_toEndOf="parent"
     app:layout_constraintTop_toTopOf="parent"
     tools:ignore="HardcodedText" />

 <ImageView
     android:id="@+id/clearAllIV"
     android:layout_width="48dp"
     android:layout_height="48dp"
     android:layout_margin="8dp"
     android:alpha="0"
     android:contentDescription="Clear All"
     android:padding="4dp"
     android:scaleType="fitXY"
     android:src="@drawable/ic_clear_all"
     app:layout_constraintEnd_toEndOf="parent"
     app:layout_constraintTop_toTopOf="parent"
     tools:ignore="HardcodedText" />

 <ImageView
     android:id="@+id/arrowIV"
     android:layout_width="48dp"
     android:layout_height="48dp"
     android:layout_margin="8dp"
     android:contentDescription="Arrow"
     android:padding="4dp"
     android:scaleType="fitXY"
     android:src="@drawable/ic_arrow"
     app:layout_constraintEnd_toEndOf="parent"
     app:layout_constraintTop_toTopOf="parent"
     tools:ignore="HardcodedText" />
</androidx.constraintlayout.widget.ConstraintLayout>

2020-09-12 18:09:44

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

用上下滑动动画显示和隐藏视图

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