Question

我已经实现了具有特定输出大小的图像裁剪意图。但是代码大小的变化对图像没有任何影响，每次变化的输出都保持不变。

 private void performCrop(String picUri) {
    try {
        //Start Crop Activity

        Intent cropIntent = new Intent("com.android.camera.action.CROP");
        // indicate image type and Uri
        File f = new File(picUri);
        Uri contentUri = Uri.fromFile(f);

        cropIntent.setDataAndType(contentUri, "image/*");
        // set crop properties
        cropIntent.putExtra("crop", "true");
        // indicate aspect of desired crop
        cropIntent.putExtra("aspectX", 1);
        cropIntent.putExtra("aspectY", 1);
        // indicate output X and Y
        cropIntent.putExtra("outputX", 400);
        cropIntent.putExtra("outputY", 400);

        // retrieve data on return
        cropIntent.putExtra("return-data", true);
        // start the activity - we handle returning in onActivityResult
        startActivityForResult(cropIntent, RESULT_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();
    }
}

输出x和y值的变化不会影响裁剪的图像尺寸。图像大小始终为160 * 160。当我改变宽高比时，图像尺寸会发生一些变化。但我需要为x和y提供特定的大小

如果有任何关于图像裁剪的库并且也支持所有设备那么它会很棒

Answer 1

以outputX和outputY的比例设置aspectX和aspectY。

假设您希望结果图像为200 * 300像素。然后，只需将aspectX设置为2，将aspectY设置为3.您将获得所需的图像尺寸。这是更新的代码。

 private void performCrop(String picUri) {
    try {
        //Start Crop Activity

        Intent cropIntent = new Intent("com.android.camera.action.CROP");
        // indicate image type and Uri
        File f = new File(picUri);
        Uri contentUri = Uri.fromFile(f);

        cropIntent.setDataAndType(contentUri, "image/*");
        // set crop properties
        cropIntent.putExtra("crop", "true");
        // indicate aspect of desired crop
        cropIntent.putExtra("aspectX", 2);
        cropIntent.putExtra("aspectY", 3);
        // indicate output X and Y
        cropIntent.putExtra("outputX", 200);
        cropIntent.putExtra("outputY", 300);

        // retrieve data on return
        cropIntent.putExtra("return-data", true);
        // start the activity - we handle returning in onActivityResult
        startActivityForResult(cropIntent, RESULT_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();
    }
    }

Android Image Crop：输出x和输出y

1 个答案: