小程序网站开发怎么样,资源网站建设,php个人网站源码带音乐,网页页面设计叫什么kotlin图片合成和压缩
之前的方法是继承AsyncTask 在doInBackground 里面去做压缩的操作#xff0c;然后用 publishProgress 切到主线程里面更新 新方法是在协程里的去做
class ImageService {private fun getSumWidths(bitmaps: ArrayListBitmap): Int {var sumWid…kotlin图片合成和压缩
之前的方法是继承AsyncTask 在doInBackground 里面去做压缩的操作然后用 publishProgress 切到主线程里面更新 新方法是在协程里的去做
class ImageService {private fun getSumWidths(bitmaps: ArrayListBitmap): Int {var sumWidth 0for (b in bitmaps) {sumWidth intValidCheck((sumWidth b.width).toLong())}return sumWidth}private fun getMaxHeights(bitmaps: ArrayListBitmap): Int {var max bitmaps[0].heightfor (bitmap in bitmaps) {if (max bitmap.height) {max bitmap.height}}return max}/*** crop front rear left right View Image*/fun cropImage(src: Bitmap): Bitmap {Log.d(cropImage src width: src.width , height: src.height)//int x, int y, int width, int heightval result Bitmap.createBitmap(src, 0, 0, CROP_IMAGE_WIDTH_SIZE, CROP_IMAGE_HEIGHT_SIZE)Log.d(cropImage result width: result.width , height: result.height)if (result ! src) {src.recycle()}return result}fun cropOtherViewImage(src: Bitmap): Bitmap? {Log.d(cropTopViewImage width: src.width , height: src.height)//int x, int y, int width, int heightval result Bitmap.createBitmap(src,CROP_OTHER_VIEW_IMAGE_X_POINT,0,CROP_OTHER_VIEW_IMAGE_WIDTH_SIZE,CROP_OTHER_VIEW_IMAGE_HEIGHT_SIZE)Log.d(cropTopViewImage result width: result.width , height: result.height)if (result ! src) {src.recycle()}return result}fun mergeMultipleImages(bitmaps: ArrayListBitmap): Bitmap? {Log.d(mergeMultipleImages)if (bitmaps.isEmpty()){return null}var totalWidth 0var maxHeight 0for (bitmap in bitmaps) {totalWidth bitmap.widthif (bitmap.height maxHeight) {maxHeight bitmap.height}}val mergedBitmap Bitmap.createBitmap(getSumWidths(bitmaps),getMaxHeights(bitmaps),Bitmap.Config.ARGB_8888)val canvas Canvas(mergedBitmap)val paint Paint()/*val mTextPaint Paint()mTextPaint.color Color.WHITEmTextPaint.isAntiAlias true*/var currentX 0for (i in bitmaps.indices) {val bitmap bitmaps[i]Log.d(bitmaps.get( i ) result width: bitmap.width , height: bitmap.height)val srcRect Rect(0, 0, bitmap.width, bitmap.height)val dstRect Rect(currentX, 0, currentX bitmap.width, maxHeight)canvas.drawBitmap(bitmap, srcRect, dstRect, paint)currentX bitmap.width}Log.d(mergeMultipleImages result Bitmap width: mergedBitmap.width , height: mergedBitmap.height)return mergedBitmap}suspend fun compressImages(bitmap: Bitmap): ByteArray? {return withContext(Dispatchers.Default) {Log.d( start compressImages )val outputStream ByteArrayOutputStream()var quality 100bitmap.compress(Bitmap.CompressFormat.JPEG, quality, outputStream)while (outputStream.size() / KB MAX_IMAGE_SIZE quality 0) {outputStream.reset()quality - 1bitmap.compress(Bitmap.CompressFormat.JPEG, quality, outputStream)}Log.d(compressImagesend ${outputStream.size()})val saveCompressImage saveCompressImage(getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS),outputStream)Log.d(saveCompressImage: $saveCompressImage)outputStream.toByteArray()}}private fun saveCompressImage(f: File, bos: ByteArrayOutputStream?): Boolean {val file File(f,compress.jpeg)Log.d(saveCompressImage : file.path)return try {val fos FileOutputStream(file)bos?.writeTo(fos)Log.d(saveCompressImage success)fos.flush()fos.close()true} catch (e: Exception) {Log.d(saveCompressImage error)e.printStackTrace()false}}companion object {private const val MAX_IMAGE_SIZE 250private const val CROP_IMAGE_WIDTH_SIZE 120 // 尺寸要保持一致private const val CROP_IMAGE_HEIGHT_SIZE 121 // 尺寸要保持一致private const val CROP_OTHER_VIEW_IMAGE_X_POINT 1288 // 其他的尺寸要保持一致 这个是额外添加的viewprivate const val CROP_OTHER_VIEW_IMAGE_WIDTH_SIZE 632 // 其他的尺寸要保持一致private const val CROP_OTHER_VIEW_IMAGE_HEIGHT_SIZE 720 其他的尺寸private const val KB: Long 1024fun intValidCheck(value: Long): Int {if (value Int.MIN_VALUE || value Int.MAX_VALUE) {throw ArithmeticException(Integer overflow)}return value.toInt()}}}
