为图像添加边框，例如 android 中的 google 照片扫描应用程序

Question

在 android 中是否可以在不向用户显示图像的情况下为图像添加边框。喜欢google照片扫描应用..Here a border is added to image with photoscan logo

Answer 1

你可以使用这个库

implementation 'com.github.siyamed:android-shape-imageview:0.9.+@aar'

在Xml文件中

<com.github.siyamed.shapeimageview.BubbleImageView
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:src="@drawable/neo"
    app:siArrowPosition="right"
    app:siSquare="true"/>

Answer 2

设计了带有图像视图的自定义布局
将其膨胀为视图对象
在布局中将我的图像设置为该图像视图
将视图绘制成位图并保存

充气绘图代码

    public Bitmap drawToBitmap(Context context, final int layoutResId,
                           final int width, final int height, String imageDescription) {
    final Bitmap bmp = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
    final Canvas canvas = new Canvas(bmp);
    final LayoutInflater inflater =
            (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    final View layout = inflater.inflate(layoutResId, null);
    ImageView img = layout.findViewById(R.id.imgAnalysedBitmap);
    img.setImageBitmap(croppedBitmap);
    layout.setDrawingCacheEnabled(true);
    layout.measure(
            View.MeasureSpec.makeMeasureSpec(canvas.getWidth(), View.MeasureSpec.EXACTLY),
            View.MeasureSpec.makeMeasureSpec(canvas.getHeight(), View.MeasureSpec.EXACTLY));
    layout.layout(0, 0, layout.getMeasuredWidth(), layout.getMeasuredHeight());
    canvas.drawBitmap(layout.getDrawingCache(), 0, 0, new Paint());
    return bmp;
}

用法：

final DisplayMetrics metrics = getResources().getDisplayMetrics();
        Bitmap bmap = drawToBitmap(this, R.layout.layout_watermark, metrics.widthPixels, metrics.heightPixels, imageDescription);

为图像添加边框，例如 android 中的 google 照片扫描应用程序

Adding border to image like google photo scan app in android

java

android

watermark

image