如何在appcelerator中裁剪图库图像？

Question

I am developing iOS application. In that I have a requirement to crop the images while uploading the images from gallery.can any one help me how to crop the images in appcelerator for ios platform.

Thanks in advance

Answer 1

You can use the internal blob.imageAsCrop() method:

https://docs.appcelerator.com/platform/latest/#!/api/Titanium.Blob-method-imageAsCropped

Properties are width, height, x, y ( https://docs.appcelerator.com/platform/latest/#!/api/ImageAsCroppedDict )

It'll returns another blob which you can save or display again

Example:

var croppedImage = blob.imageAsCropped({x : 20, y : 20, width : 100, height : 100});
var imageView = Titanium.UI.createImageView({
    image:croppedImage,
    width: 100, height:100
});

Example 2:

Titanium.Media.openPhotoGallery({
        success: function(event) {
            var galleryImage = event.media;

            var dict = {
                x: 0,
                y: 50,
                width: 300,
                height: 300
            };

            var croppedImage = galleryImage.imageAsCropped(dict);

            var imageView = Ti.UI.createImageView({
                image: croppedImage,
                height: 'auto',
                width: 'auto'
            });
            $.index.add(imageView);
        },
        cancel: function() {},
        savedToPhotoGallery: true,
        allowEditing: true,
        mediaTypes: [Ti.Media.MEDIA_TYPE_PHOTO],
        showControls: true
    });