val bitmap = (drawable as BitmapDrawable).bitmap 最后,将Bitmap对象设置给ImageView。可以使用setImageBitmap()方法将Bitmap对象设置给ImageView。例如,如果有一个名为"imageView"的ImageView,可以使用以下代码: 代码语言:txt 复制 imageView.setImageBitmap
toBitmap扩展函数简化了将Drawable转换为Bitmap的过程。 fun Drawable.toBitmap(): Bitmap { if (this is BitmapDrawable) { return bitmap } val bitmap = Bitmap.createBitmap(intrinsicWidth, intrinsicHeight, Bitmap.Config.ARGB_8888) val canvas = Canvas(bitmap) setBounds(0, 0, canvas.width, canv...
(bitmap) // 旋转Canvas val pivotX = intrinsicWidth.toFloat() / 2f val pivotY = intrinsicHeight.toFloat() / 2f canvas.rotate(angle, pivotX, pivotY) // 重新设置Drawable的bounds,以适配Bitmap drawable.setBounds(0, 0, canvas.width, canvas.height) // 绘制Drawable到Canvas上 drawable.draw(...
compressFormat = Bitmap.CompressFormat.PNG ) } binding.readJpg.setOnClickListener { val bitmap = readBitmap("test/dir3/陈独秀.jpg") binding.imageView.setImageBitmap(bitmap) } binding.saveJpg.setOnClickListener { val bitmap = binding.imageView.drawable.toBitmap() writeBitmap( bitmap = bi...
问如何在kotlin中将BitmapDrawable或位图转换为ImageBitmapEN在编程中，有时我们需要将数字转换为字母，...
tv4!!.background = BitmapUtil.addStateDrawable1(context, myGrad3, myGrad4, myGrad4, myGrad4) public static StateListDrawable addStateDrawable1(Context context, Drawable idNormal, Drawable idPressed, Drawable idFocused, Drawable idUnable) { ...
max(width * 1.0f / bitmap.width, height * 1.0f / bitmap.height) } } // shader的变换矩阵,我们这里主要用于放大或者缩小 mMatrix.setScale(scale, scale) setLocalMatrix(mMatrix) } } private fun drawableToBitmap(drawable: Drawable): Bitmap { if (drawable is BitmapDrawable) { return ...
): Bitmap // 应用代码 d.toBitmap(width, height) DrawableKt 实际上是使用扩展方法,将开发者需要做的操作封装了起来,从而节省了大量重复工作的时间: fun Drawable.toBitmap( @Px width: Int = intrinsicWidth, @Px height: Int = intrinsicHeight, ...
public staticBitmapdrawableToBitmap3(Drawable drawable) {Bitmapbitmap=Bitmap.createBitmap(drawable.getIntrinsicWidth(),drawable.getIntrinsicHeight(), drawable.getOpacity() != PixelFormat.OPAQUE ?Bitmap.Config.ARGB_8888:Bitmap.Config.RGB_565);Canvas canvas = new Canvas(bitmap);drawable.setBounds(0,...
// convert the drawable to a bitmap val bitmap = myDrawable.toBitmap() 1. 2. 3. 4. Day28 Sequences,lazy和generators 参考 Kotlin系列之序列(Sequences)源码完全解析 序列操作又被称之为惰性集合操作,Sequences序列接口强大在于其操作的实现方式。序列中的元素求值都是惰性的,所以可以更加高效使用序列来...