Android图像裁剪正在缩小图像的大小

Question

我需要从Android手机画廊裁剪一张照片,然后进行编辑.照片的原始尺寸为3264*2448,在我的尺寸为1280*720的屏幕上显示为缩小的图像.当我裁剪它时,我得到的图像大小为185*139.

我用于裁剪的代码是

        Intent cropIntent = new Intent("com.android.camera.action.CROP");
        cropIntent.setDataAndType(picUri, "image/*");
        cropIntent.putExtra("crop", "true");
        cropIntent.putExtra("return-data", true);
        startActivityForResult(cropIntent, PIC_CROP);

当我在imageView中显示裁剪的图像时,它显示为更小的图像.

我应该裁剪原始大小的图像而不是缩小版本.你们有没有人可以指导我如何做到这一点？

Answer 1

请试试这个,我知道为时已晚,但可能会对某人有所帮助.

private void performCrop() {
try {
    //call the standard crop action intent (the user device may not support it)
    Intent cropIntent = new Intent("com.android.camera.action.CROP");
    //indicate image type and Uri
    cropIntent.setDataAndType(mImageCaptureUri, "image/*");
    //set crop properties
    cropIntent.putExtra("crop", "true");
    //indicate aspect of desired crop
    cropIntent.putExtra("aspectX", 4);
    cropIntent.putExtra("aspectY", 3);
    //indicate output X and Y
    cropIntent.putExtra("outputX", 800);
    cropIntent.putExtra("outputY", 800);

File f = new File(Environment.getExternalStorageDirectory(),
        "/temporary_holder.jpg");
    try {
        f.createNewFile();
    } catch (IOException ex) {
    Log.e("io", ex.getMessage());  
    }

uri = Uri.fromFile(f);

  cropIntent.putExtra(MediaStore.EXTRA_OUTPUT, uri);

    startActivityForResult(cropIntent, PIC_CROP);

} //respond to users whose devices do not support the crop action
catch (ActivityNotFoundException anfe) {
    //display an error message
    String errorMessage = "Your device doesn't support the crop action!";
    Toast toast = Toast.makeText(this, errorMessage, Toast.LENGTH_SHORT);
    toast.show();
}
}

让你的onActivityResult像这样: -

    @Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {

     if (requestCode == PIC_CROP) {

              String filePath = Environment.getExternalStorageDirectory()
                    + "/temporary_holder.jpg";

            thumbnail = BitmapFactory.decodeFile(filePath);



                   //thumbnail =    BitmapFactory.decodeFile(filePath);
           //    Log.i("",String.valueOf(thumbnail.getHeight()));

                ImageView image = (ImageView) findViewById(R.id.pestImage);
                image.setImageBitmap(thumbnail);
                }
}

Answer 2

首先，您应该意识到不能依赖裁剪意图来实现跨设备兼容性。（任何 OEM 都可以用自己的版本替换库存相机/图库应用程序）。除此之外，我认为您错过了一些应该符合意图并给您带来预期效果的额外内容。

// width & height are your desired width/height for the cropped result
cropIntent.putExtra("outputX", width);
cropIntent.putExtra("outputY", height);
cropIntent.putExtra("aspectX", width);
cropIntent.putExtra("aspectY", height);
cropIntent.putExtra("scaleUpIfNeeded", true);

尝试将这些添加到您的意图中，看看结果如何。