获取图像的宽度和高度与毕加索库 [英] getting image width and height with picasso library

问题描述

我使用毕加索库下载和加载图像到ImageView的。现在我想知道我可以加载它们在imageViews之前获得图像的宽度和高度？

i'm using picasso library to download and load images into imageView. now i want to know how i can get image width and height before loading them in imageViews ?

我有包含两个ImageView的（其中一个是垂直和另一个是水平的）的适配器列表视图。取决于图像的宽度和高度，我想加载图像到imageviews之一。

i have a listview with an adapter that contains two imageView(one of them is vertical and another is horizontal). depends on image width and height i want to load image into one of the imageviews.

推荐答案

您只能下载后得到位图的尺寸 - 你必须使用同步方法调用是这样的：

You can get Bitmap dimensions only after downloading It - you must use synchronous method call like this:

final Bitmap image = Picasso.with(this).load("http://").get();
int width = image.getWidth();
int height = image.getHeight();

在此，你可以调用再次相同的URL加载（它会从缓存中获取）：

After this you can call again load with same url (It will be fetched from cache):

 Picasso.with(this).load("http://").into(imageView)

编辑：也许更好的方法：

 Picasso.with(this).load("http://").into(new Target() {
            @Override
            public void onBitmapLoaded(Bitmap bitmap, Picasso.LoadedFrom from) {
                int width = bitmap.getWidth();
                int height = bitmap.getHeight();
                imgView.setImageBitmap(bitmap);
            }

            @Override
            public void onBitmapFailed(Drawable errorDrawable) {

            }

            @Override
            public void onPrepareLoad(Drawable placeHolderDrawable) {

            }
        });

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