如何从Android上的Camera选择的图像中获得正确的宽度和高度？ [英] How do i get right width and height from image picked by Camera on Android?

问题描述

我需要执行以下操作：

1. 使用Android相机拍照...


2. 从图像中删除背景并放入另一个背景中


3. 保存

我正在做这3个步骤...
问题是图像以小尺寸（160 x 120）保存。
当我从相机获得结果时，我这样做：

Im doing those 3 steps fine... The problem is the image is saved in a small size (160 x 120). When i get the result from camera i do this:

protected void onActivityResult(int requestCode, int resultCode, Intent data) {  
        if (requestCode == CAMERA_REQUEST) {  
            Bitmap photo = (Bitmap) data.getExtras().get("data");
            Log.i("Test", "Width: " + photo.getWidth() + " Height: " + photo.getHeight());

返回

Width: 160 Height: 120

我从数据获取的图像变量是1280 x 960 ......

The image that I am getting from "data" variable is 1280 x 960...

如果我使用

background= Bitmap.createScaledBitmap(background, 1280, 960, false);

我得到的图像质量差......

The image I get as bad quality...

如何获得正确尺寸的位图？！

How can I get the bitmap in the right size?!

推荐答案

尝试将图像写入文件并然后返回文件名作为结果：

Try writing out the image to a file and then returning the filename as the result:

@Override
public void onPictureTaken(byte[] data, Camera camera) {
  File pictureFile = new File(filename);

  try {
    FileOutputStream fos = new FileOutputStream(pictureFile);
    fos.write(data);
    fos.close();
  } catch (Exception e) {
  }

  Intent intent = this.getIntent();
  intent.putExtra("filename", filename);
  this.setResult(RESULT_OK, intent);
  finish();
}

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