如何将图像定位在所有android设备的同一位置？

Question

I have to position the images on my layout such that it does not change its position with varying screen resolutions. They should be exactly where they are placed. layout_weight attribute can be used with linear layout. But I am using relative layout and I am dealing with cropped images. Any solution on how to position the image views? Setting out margin height and width is not worth.

Answer 1

In short - you can't. Devices have different resolutions as well as screen sizes ratio. Thus it's impossible for the app to look same because there is no same definition in Android. The only way to design an interface - is to use bindings to other objects or parent view's borders. Try to investigate what are the rules, eg "to the bottom of the picture with 10dp gap" or "next to the TextView" - and it's the constants that are kept on every device.

Answer 2

I can't imagine a scenario where this makes sense but it obviously must exist since the Android team built support for it. The docs on the dimension type clearly state that it supports "mm" and "in" as qualifiers for millimetres and inches respectively.

That should get you what you need but I would advise reevaluating that requirement, as it would make design a massive pain.