如何在较小的手机中解决我的应用程序出现的剪切问题？

Question

I have a basic linear layout, with image view that display photos, textviews that show text etc...and when I test my whole app on my android 2, there is never any part of the screen that doesn't show. But when I test it in the QVGA emulator, half the view is off the screen. Now, some of my text is defined to a certain size.

I never use px (only dip) in any of my xml. I use fill_parent, wrap_content where it is needed and never fix a height or length. Could it be with my text, I use say, textSize = 22dip? I couldn't find documentation on why that would not work in all sizes.

Could it be that some apps need to be programmed to those screen sizes? Or am I missing something?

Thanks!

Answer 1

DIP actually doesn't help in fluid layout design. DIP tries to make sure things will looks the same size across different screen density. (imagine the concept of Point in typography)

Without your code and/or screenshot of what happen, it is hard to judge what happens to your program, but 22dip text size is possibly one of the reason which:

1. 22dip text in HDPI will become: 22 * 240 / 160 = 33 pixel
2. 22dip text in LDPI will become: 22 * 120 / 160 = 16.5 pixel

If your setting on QVGA is HDPI, then it is actually 33 pixel tall for a letter, which consumes more than 1/10 of the screen height.

By the way, your 16:9 wide screen (vertical) may fit everything in one screen without scroll, while QVGA is only 3:2 screen, even though everything is in proportion, something would be hidden away for sure.