// Bitmap.compress()方法publicbooleancompress(CompressFormat format,intquality,OutputStream stream){if(stream==null){thrownewNullPointerException();}if(quality<0||quality>100){thrownewIllegalArgumentException("quality must be 0..100");}Trace.traceBegin(Trace.TRACE_TAG_RESOURCES,"Bitmap.compress")...
Bitmap.CompressFormat.JPEG : Bitmap.CompressFormat.PNG; boolean success = bitmap.compress(format, compressRate, os);//【核心】 if (success) { T.showLToast(mContext, "success"); } final String pathName = FileHelper.stripFileProtocol(uri.toString()); showBitmapInfos(pathName); bitmap = B...
Bitmap bmp=BitmapFactory.decodeResource(res, R.drawable.pic); 07.Bitmap → byte[] privatebyte[] Bitmap2Bytes(Bitmap bm){ ByteArrayOutputStream baos=newByteArrayOutputStream(); bm.compress(Bitmap.CompressFormat.PNG,100, baos);returnbaos.toByteArray(); } 08.byte[] → Bitmap privateBitma...
public booleancompress(Bitmap.CompressFormat format, int quality, OutputStream stream) 将位图的压缩到指定的OutputStream,可以理解成将Bitmap保存到文件中!format:格式,PNG,JPG等;quality:压缩质量,0-100,0表示最低画质压缩,100最大质量(PNG无损,会忽略品质设定)stream:输出流 返回值代表是否成功压缩到指定流!
iv_1.setImageBitmap(bmp);//压缩图像后,显示ByteArrayOutputStream bos =newByteArrayOutputStream(); bmp.compress(Bitmap.CompressFormat.JPEG,1, bos);byte[] bytes =bos.toByteArray(); Bitmap bmp1= BitmapFactory.decodeByteArray(bytes, 0, bytes.length); ...
publicstaticStringsave(Bitmap bitmap, Bitmap.CompressFormat format,intquality,File desFile){ try{ FileOutputStream out =newFileOutputStream(desFile); if(bitmap.compress(format,quality,out)){ out.flush(); out.close(); } if(bitmap!=null&&!bitmap.isRecycled()){ ...
public boolean compress(CompressFormat format, int quality, OutputStream stream) //按指定的图片格式以及画质,将图片转换为输出流。 format:压缩图像的格式,如Bitmap.CompressFormat.PNG或+ Bitmap.CompressFormat.JPEG quality:画质,0-100.0表示最低画质压缩,100以最高画质压缩。对于PNG等无损格式的图片,会忽略此...
这个是图像压缩的方法，三个参数分别是压缩后的图像的格式（png），图像显示的质量（0—100），100表示最高质量，图像处理的输出流（out）。
Resource(this.getResources(), R.mipmap.test_pic);iv_1.setImageBitmap(bmp);ByteArrayOutputStreambos= newByteArrayOutputStream();bmp.compress(Bitmap.CompressFormat.JPEG,10,bos);byte[]bytes=bos.toByteArray();bmp=BitmapFactory.decodeByteArray(bytes,0,bytes.length);iv_2.setImageBitmap(bmp);}...
publicstaticStringsave(Bitmap bitmap, Bitmap.CompressFormat format,intquality,File desFile){ try{ FileOutputStream out =newFileOutputStream(desFile); if(bitmap.compress(format,quality,out)){ out.flush(); out.close(); } if(bitmap!=null&&!bitmap.isRecycled())...