public Bitmap matrixBitmapSize(Bitmap bitmap, int screenWidth,int screenHight) {//获取当前bitmap的宽高int w = bitmap.getWidth();int h = bitmap.getHeight();Matrix matrix = new Matrix();float scale = (float) screenWidth / w;float scale2 = (float) screenHight / h;// 取比例小的值 可以把图片完全缩放在屏幕内scale = scale < scale2 ? scale : scale2;// 都按照宽度scale 保证图片不变形.根据宽度来确定高度matrix.postScale(scale, scale);// w,h是原图的属性.return Bitmap.createBitmap(bitmap, 0, 0, w, h, matrix, true);}public Bitmap optionsBitmapSize(String imagePath, int screenWidth,int screenHight) {// 设置解析图片的配置信息BitmapFactory.Options options = new Options();// 设置为true 不再解析图片 只是获取图片的头部信息及宽高options.inJustDecodeBounds = true;// 返回为nullBitmapFactory.decodeFile(imagePath, options);// 获取图片的宽高int imageWidth = options.outWidth;int imageHeight = options.outHeight;// 计算缩放比例int scaleWidth = imageWidth / screenWidth;int scaleHeight = imageHeight / screenHight;// 定义默认缩放比例为1int scale = 1;// 按照缩放比例大的 去缩放if (scaleWidth > scaleHeight & scaleHeight >= 1) {scale = scaleWidth;} else if (scaleHeight > scaleWidth & scaleWidth >= 1) {scale = scaleHeight;}// 设置为true开始解析图片options.inJustDecodeBounds = false;// 设置图片的采样率options.inSampleSize = scale;// 得到按照scale缩放后的图片Bitmap bitmap = BitmapFactory.decodeFile(imagePath, options);return bitmap;}
，慢慢学会了长大。流转的时光，
