android-framelayout

问题 I see many applications that use a full-screen image as background. This is an example: I want to use this in a project, the best way I\'ve found so far to do this is to use an image with a large size, put it in a ImageView and use android: adjustViewBounds=\"true\" to adjust the margins The problem is that if a screen with a very high resolution, the image falls short. Another option I thought of is to use the image in a FrameLayout , with match_parent in width and height as background...

问题 I am confused about the difference between LinearLayout, RelativeLayout, and AbsoluteLayout. Could someone please tell me the exact differences between them? 回答1: LinearLayout means you can align views one by one (vertically/ horizontally). RelativeLayout means based on relation of views from its parents and other views. ConstraintLayout is similar to a RelativeLayout in that it uses relations to position and size widgets, but has additional flexibility and is easier to use in the Layout

问题 I\'m building a UI, and it\'s all static defined in the XML. All of it has weights all over the place, and while it looks right, I wanted to see that things actually have the right height and all. The problem is that no matter where I call .getHeight() for my format layout I got 0. I tried in both onCreate() and onStart(). Same thing. Happens for all UI objects too. Any idea? package com.app.conekta; import android.app.Activity; import android.os.Bundle; import android.util.Log; import