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

从ashakirov的回答为Kotlin用户

 val transition: Transition = Slide(Gravity.BOTTOM)
                transition.duration = 600
                transition.addTarget(you_parent_layout_id)
TransitionManager.beginDelayedTransition(rootLayoutId, transition)
                yourViewIdToHide.visibility = if (yourViewIdToHide.isShown) View.GONE else View.VISIBLE

其他回答

if (filter_section.getVisibility() == View.GONE) {
    filter_section.animate()
            .translationY(filter_section.getHeight()).alpha(1.0f)
            .setListener(new AnimatorListenerAdapter() {
                @Override
                public void onAnimationStart(Animator animation) {
                    super.onAnimationStart(animation);
                    filter_section.setVisibility(View.VISIBLE);
                    filter_section.setAlpha(0.0f);
                }
            });
} else {
    filter_section.animate()
            .translationY(0).alpha(0.0f)
            .setListener(new AnimatorListenerAdapter() {
                @Override
                public void onAnimationEnd(Animator animation) {
                    super.onAnimationEnd(animation);
                    filter_section.setVisibility(View.GONE);
                }
            });
}

当LinearLayout的可见性改变时,你可以通过创建LinearLayout的一个新的子类并覆盖setVisibility()来启动动画来启动正确的动画。考虑一下这样的事情:

public class SimpleViewAnimator extends LinearLayout
{
    private Animation inAnimation;
    private Animation outAnimation;

    public SimpleViewAnimator(Context context)
    {
        super(context);
    }

    public void setInAnimation(Animation inAnimation)
    {
        this.inAnimation = inAnimation;
    }

    public void setOutAnimation(Animation outAnimation)
    {
        this.outAnimation = outAnimation;
    }

    @Override
    public void setVisibility(int visibility)
    {
        if (getVisibility() != visibility)
        {
            if (visibility == VISIBLE)
            {
                if (inAnimation != null) startAnimation(inAnimation);
            }
            else if ((visibility == INVISIBLE) || (visibility == GONE))
            {
                if (outAnimation != null) startAnimation(outAnimation);
            }
        }

        super.setVisibility(visibility);
    }
}

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>

这是我的解决方案。只需要获取视图的引用并调用这个方法:

public static void animateViewFromBottomToTop(final View view){

    view.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {

        @Override
        public void onGlobalLayout() {

            view.getViewTreeObserver().removeOnGlobalLayoutListener(this);

            final int TRANSLATION_Y = view.getHeight();
            view.setTranslationY(TRANSLATION_Y);
            view.setVisibility(View.GONE);
            view.animate()
                .translationYBy(-TRANSLATION_Y)
                .setDuration(500)
                .setStartDelay(200)
                .setListener(new AnimatorListenerAdapter() {

                    @Override
                    public void onAnimationStart(final Animator animation) {

                        view.setVisibility(View.VISIBLE);
                    }
                })
                .start();
        }
    });
}

不需要做任何其他事情=)

你可以使用简单的三行代码来显示动画…

//getting the hiding view by animation

 mbinding.butn.setOnClickListener {

                val SlideOutLeft = AnimationUtils.loadAnimation(this, R.anim.slide_out_left)
                simplelayout.visibility = View.INVISIBLE
                simplelayout.startAnimation(SlideOutLeft)


                val SlideInRight = AnimationUtils.loadAnimation(applicationContext, R.anim.slide_in_right)
                animation1.visibility = View.VISIBLE
                animation1.startAnimation(SlideInRight)

            }
            //again unhide the view animation
            mbinding.buttn.setOnClickListener {


               val SlideInLeft=AnimationUtils.loadAnimation(this,R.anim.slide_in_left)
                //set the layout
               simplelayout.visibility=View.VISIBLE
               simplelayout.startAnimation(SlideInLeft)

               val SlideOutRight=AnimationUtils.loadAnimation(this,R.anim.slide_out_right)
               animation1.visibility=View.INVISIBLE
               animation1.startAnimation(SlideOutRight)

            }