如何裁剪分析图像中的android？ [英] How to crop the parsed image in android?

问题描述

我解析一个网站，以显示内容的URL，在一些图像都在那里。我要裁剪它们是从站点解析的图像。我真的很挣扎于这一点，任何一个可以帮助我就在这？

I am parsing a website to display the contents in a URL, in that some images are there. I want to crop the images which are parsed from the site. I'm really struggling on this, can any one help me regarding on this?

推荐答案

我假定你已经从网站上得到的形象来，要调整，而不是农作物？即创建缩略图。

I assume you've already "got" the images down from the website and want to resize rather than crop? I.e. create thumbnails.

如果是这样，你可以使用以下命令：

If so, you can use the following:

    // load the origial BitMap (500 x 500 px)
    Bitmap bitmapOrg = BitmapFactory.decodeResource(getResources(), 
           R.drawable.android);

    int width = bitmapOrg.width();
    int height = bitmapOrg.height();
    int newWidth = 200;
    int newHeight = 200;

    // calculate the scale - in this case = 0.4f
    float scaleWidth = ((float) newWidth) / width;
    float scaleHeight = ((float) newHeight) / height;

    // createa matrix for the manipulation
    Matrix matrix = new Matrix();
    // resize the bit map
    matrix.postScale(scaleWidth, scaleHeight);

    // recreate the new Bitmap
    Bitmap resizedBitmap = Bitmap.createBitmap(bitmapOrg, 0, 0, 
                      width, height, matrix, true); 

    // make a Drawable from Bitmap to allow to set the BitMap 
    // to the ImageView, ImageButton or what ever
    BitmapDrawable bmd = new BitmapDrawable(resizedBitmap);

    ImageView imageView = new ImageView(this);

    // set the Drawable on the ImageView
    imageView.setImageDrawable(bmd);

    // center the Image
    imageView.setScaleType(ScaleType.CENTER);

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