Android 截屏拍照动画飞到相册按键后消失_android 截图动画实现-优快云博客

想要实现一个仿截屏动画，然后截屏图片飞到相册按钮后消失，如动画所示：

myrecording

找了很长时间，也没找到现成的例子，于是拼凑了两种别人实现的动画实现。

首先是截屏动画，参考链接如下：
添加链接描述

第二部分，缩放到指定位置消失，参考链接如下：
添加链接描述

详细代码如下：


public class MainActivity extends AppCompatActivity {
    private ImageView ivScreenshots;
    private CardView mCardView;
    private Button btnScreenshots;
    // 截图动画
    private Animation mCaptureAnimation;

    private Handler mHandler = new Handler();

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        mCardView = findViewById(R.id.cardView);
        ivScreenshots = findViewById(R.id.iv_capture);
        btnScreenshots = findViewById(R.id.btn_album);

        mCaptureAnimation = AnimationUtils.loadAnimation(this, R.anim.scale_animation);
        mCaptureAnimation.setFillAfter(true);
        mCaptureAnimation.setAnimationListener(new Animation.AnimationListener() {
            @Override
            public void onAnimationStart(Animation animation) {

            }
            @Override
            public void onAnimationEnd(Animation animation) {
                mHandler.postDelayed(mCaptureViewDisappearRunnable, 50);
            }
            @Override
            public void onAnimationRepeat(Animation animation) {

            }
        });

        Button btnScreenshots = findViewById(R.id.btn_screenshot);
        btnScreenshots.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                screenCapture();
            }
        });
    }

    private Runnable mCaptureViewDisappearRunnable = new Runnable() {
        @Override
        public void run() {
            mCardView.clearAnimation();
            mCardView.setVisibility(View.INVISIBLE);
            scaleDownAndTransitionAnimation(mCardView, btnScreenshots);
        }
    };

    private void screenCapture() {
        View decorView = getWindow().getDecorView();
        Bitmap screenBitmap = Bitmap.createBitmap(decorView.getWidth(), decorView.getHeight(), Bitmap.Config.ARGB_8888);
        Canvas canvas = new Canvas(screenBitmap);
        decorView.draw(canvas);

        updateImageCapture(screenBitmap);
    }

    private void updateImageCapture(final Bitmap screenBitmap) {
        runOnUiThread(new Runnable() {
            @Override
            public void run() {
                mCardView.setVisibility(View.VISIBLE);
                ivScreenshots.setImageBitmap(screenBitmap);
            }
        });
        mCardView.startAnimation(mCaptureAnimation);
    }

    private void scaleDownAndTransitionAnimation(final View startView, View finishView) {
        int startViewLocation[] = new int[2];
        startView.getLocationInWindow(startViewLocation);
        int finishViewLocation[] = new int[2];
        finishView.getLocationInWindow(finishViewLocation);
        int startX = startViewLocation[0] + startView.getWidth() / 2;
        int startY = startViewLocation[1] + startView.getHeight() / 2;
        int endX = finishViewLocation[0] + finishView.getWidth() / 2;
        int endY = finishViewLocation[1] + finishView.getHeight() / 2;
        ScaleAnimation animation = new ScaleAnimation(1f, 0f, 1, 0f,
                Animation.ABSOLUTE, endX - startX + startView.getWidth() / 2,
                Animation.ABSOLUTE, endY - startY + startView.getHeight() / 2);
        animation.setDuration(500);

        final ImageView tempMoveView = new ImageView(this);
        tempMoveView.setScaleType(ImageView.ScaleType.FIT_XY);
        Bitmap tempBm = getBitmapFromView(startView);
        tempMoveView.setImageBitmap(tempBm);
        FrameLayout.LayoutParams params = new FrameLayout.LayoutParams(startView.getMeasuredWidth(), startView.getMeasuredHeight());
        params.setMargins((int) startView.getX(), (int) startView.getY(), (int) (startView.getX()+startView.getMeasuredWidth()), (int) (startView.getY()+startView.getMeasuredHeight()));
        tempMoveView.setLayoutParams(params);

        final FrameLayout frameLayout = (FrameLayout) this.getWindow().getDecorView().getRootView();
        frameLayout.addView(tempMoveView);
        tempMoveView.startAnimation(animation);

        animation.setAnimationListener(new Animation.AnimationListener() {
            @Override
            public void onAnimationStart(Animation animation) {
                startView.setVisibility(View.GONE);
            }

            @Override
            public void onAnimationRepeat(Animation animation) {

            }

            @Override
            public void onAnimationEnd(Animation animation) {
                frameLayout.removeView(tempMoveView);
            }
        });
    }

    public static Bitmap getBitmapFromView(View view) {
        // 创建与该view相同大小的空Bitmap
        Bitmap bitmap = Bitmap.createBitmap(view.getWidth(), view.getHeight(), Bitmap.Config.ARGB_8888);
        // 使用Canvas进行绘制
        Canvas canvas = new Canvas(bitmap);
        // 将view绘制在bitmap上
        view.draw(canvas);
        return bitmap;
    }
}

scale_animation.xml

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
    <scale
        android:duration="500"
        android:fromXScale="1.0"
        android:fromYScale="1.0"
        android:pivotX="50%"
        android:pivotY="50%"
        android:toXScale="0.9"
        android:toYScale="0.9"/>
    <alpha
        android:duration="200"
        android:fromAlpha="0.5"
        android:toAlpha="1.0"/>
</set>

布局文件：

<?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:id="@+id/main"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@drawable/bg"
    tools:context=".MainActivity">

    <Button
        android:id="@+id/btn_screenshot"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="60dp"
        android:text="截图"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintStart_toStartOf="parent"/>

    <Button
        android:id="@+id/btn_album"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginEnd="60dp"
        android:text="相册"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintRight_toRightOf="parent"/>

    <androidx.cardview.widget.CardView
        android:id="@+id/cardView"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="@android:color/transparent"
        android:visibility="gone"
        app:cardCornerRadius="5dp"
        app:cardElevation="5dp"
        app:cardPreventCornerOverlap="true"
        app:cardUseCompatPadding="true">
        <ImageView
            android:id="@+id/iv_capture"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:scaleType="fitXY"/>
    </androidx.cardview.widget.CardView>

</androidx.constraintlayout.widget.ConstraintLayout>