Android：压缩位图的有效方法

发布于 2025-02-11 10:50:17 字数 835 浏览 1 评论 0原文

是否有一种体面的方法可以压缩位图而不重新缩放它而不会吃太多的记忆会导致OOM？

Bitmap compressedImageFile;
try {
    compressedImageFile = MediaStore.Images.Media.getBitmap(getContentResolver(), fileUri);
    
    //Converting bitmap to array stream
    ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();

    //Decreasing the quality for thumbnail
    compressedImageFile.compress(Bitmap.CompressFormat.PNG, 50, byteArrayOutputStream);
    
    //Convert Bitmap to Byte array
    byte[] thumbData = byteArrayOutputStream.toByteArray();

    ...

bytearrayoutputstream.tobytearray（）正在引起OOM，可以通过减少一半的位图大小来避免这种情况，但可能有一个更体面的方法？

这是我正在使用的地方

原文

Is there a decent way to compress a Bitmap without re-scaling it without eating too much memory that cause OOM?

Bitmap compressedImageFile;
try {
    compressedImageFile = MediaStore.Images.Media.getBitmap(getContentResolver(), fileUri);
    
    //Converting bitmap to array stream
    ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();

    //Decreasing the quality for thumbnail
    compressedImageFile.compress(Bitmap.CompressFormat.PNG, 50, byteArrayOutputStream);
    
    //Convert Bitmap to Byte array
    byte[] thumbData = byteArrayOutputStream.toByteArray();

    ...

byteArrayOutputStream.toByteArray() is causing OOM, this can be avoid by reducing the bitmap size in a half but probably there is a more decent approach?

This is where I am using it