Android剪裁图片

来源：互联网发布：拱拱淘宝工具箱下载编辑：程序博客网时间：2024/06/04 18:20
ImageView iv_01 = (ImageView) findViewById(R.id.iv_01);ImageView iv_02 = (ImageView) findViewById(R.id.iv_02);ImageView iv_03= (ImageView) findViewById(R.id.iv_03);ImageView iv_04 = (ImageView) findViewById(R.id.iv_04);//第一种方法：压缩质量File saveFile = getFileStreamPath("compress.jpg");ByteArrayOutputStream baos = new ByteArrayOutputStream();Bitmap bitmap = BitmapFactory.decodeResource(getResources(), R.drawable.photo);bitmap.compress(Bitmap.CompressFormat.JPEG, 10, baos);try {    FileOutputStream fos = new FileOutputStream(saveFile);    fos.write(baos.toByteArray());    fos.flush();    fos.close();} catch (Exception e) {    e.printStackTrace();}bitmap = BitmapFactory.decodeFile(saveFile.getAbsolutePath());iv_01.setImageBitmap(bitmap);//第二种方法：尺寸缩放int ratio = 4;bitmap = BitmapFactory.decodeResource(getResources(), R.drawable.photo);int width = bitmap.getWidth() / 4;int height = bitmap.getHeight() / 4;Rect rect = new Rect(0, 0, width, height);Bitmap bit = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);Canvas canvas = new Canvas(bit);canvas.drawBitmap(bitmap, null, rect, null);iv_02.setImageBitmap(bit);//第三种方法：设置采样率BitmapFactory.Options options = new BitmapFactory.Options();options.inJustDecodeBounds = true;BitmapFactory.decodeResource(getResources(), R.drawable.photo, options);int w = options.outWidth;int h = options.outHeight;int standard = 100;int sample = w / 100;options.inJustDecodeBounds = false;options.inSampleSize = sample;bitmap = BitmapFactory.decodeResource(getResources(), R.drawable.photo, options);iv_03.setImageBitmap(bitmap);Log.e("TAG", w+"");Log.e("TAG", h+"");iv_04.setImageResource(R.drawable.photo);
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