调整图像大小，以完整的宽度和高度固定毕加索 [英] Resize image to full width and fixed height with Picasso

问题描述

我有一个垂直的LinearLayout，其中的项目之一是的ImageView 加载使用毕加索。我需要上升图像的宽度，以完整的设备宽度，并显示由一个固定的高度（150dp）裁剪的图像的中心部分。目前，我有以下code：

I have a vertical LinearLayout where one of the items is an ImageView loaded using Picasso. I need to rise the image's width to the full device width, and to display the center part of the image cropped by a fixed height (150dp). I currently have the following code:

Picasso.with(getActivity()) 
    .load(imageUrl) 
    .placeholder(R.drawable.placeholder) 
    .error(R.drawable.error) 
    .resize(screenWidth, imageHeight)
    .centerInside() 
    .into(imageView);

我应该把哪些值到屏幕宽度和 imageHeight （= 150dp）？

Which values should I put into screenWidth and imageHeight (=150dp)?

推荐答案

您正在寻找：

.fit().centerCrop()

这是什么意思：

What these mean:

• 配合 - 等到的ImageView 已被测量并调整图像的尺寸完全匹配
• centerCrop - 直到填满大小缩放图像保持高宽比。作物或者顶部和底部或左，右所以它的大小完全相同。

• fit - wait until the ImageView has been measured and resize the image to exactly match its size.
• centerCrop - scale the image honoring the aspect ratio until it fills the size. Crop either the top and bottom or left and right so it matches the size exactly.

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