RelativeLayout center vertical
use android:layout_centerVertical=”true”
android-relativelayout
Equivalent of RelativeLayout in Flutter
Flutter layouts are usually built using a tree of Column, Row and Stack widgets. These widgets take constructor arguments that specify rules for how the children are laid out relative to the parent, and you can also influence layout of individual children by wrapping them in Expanded, Flexible, Positioned, Align, or Center widgets. It is … Read more
How to get RelativeLayout working with merge and include?
There is an issue with the include tag. Check: https://issuetracker.google.com/issues/36908001 To fix it, make sure you overwrite BOTH layout_width and layout_height when including, otherwise everything will be ignored.
Is a RelativeLayout more expensive than a LinearLayout?
In a talk at Google I/O 2013 (Writing Custom Views for Android), Romain Guy clarified the misunderstanding that caused everyone to start using RelativeLayouts for everything. A RelativeLayout always has to do two measure passes. Overall it is negligible as long as your view hierarchy is simple. But if your hierarchy is complex, doing an … Read more
How to set RelativeLayout layout params in code not in xml?
Just a basic example: RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT); params.addRule(RelativeLayout.ALIGN_PARENT_LEFT, RelativeLayout.TRUE); Button button1; button1.setLayoutParams(params); params = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT); params.addRule(RelativeLayout.RIGHT_OF, button1.getId()); Button button2; button2.setLayoutParams(params); As you can see, this is what you have to do: Create a RelativeLayout.LayoutParams object. Use addRule(int) or addRule(int, int) to set the rules. The first method is used to … Read more
Android RelativeLayout programmatically Set “centerInParent”
Completely untested, but this should work: View positiveButton = findViewById(R.id.positiveButton); RelativeLayout.LayoutParams layoutParams = (RelativeLayout.LayoutParams)positiveButton.getLayoutParams(); layoutParams.addRule(RelativeLayout.CENTER_IN_PARENT, RelativeLayout.TRUE); positiveButton.setLayoutParams(layoutParams); add android:configChanges=”orientation|screenSize” inside your activity in your manifest
What are the differences between LinearLayout, RelativeLayout, and AbsoluteLayout?
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 Editor. WebView to … Read more
Can I Set “android:layout_below” at Runtime Programmatically?
Yes: RelativeLayout.LayoutParams params= new RelativeLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT,ViewGroup.LayoutParams.WRAP_CONTENT); params.addRule(RelativeLayout.BELOW, R.id.below_id); viewToLayout.setLayoutParams(params); First, the code creates a new layout params by specifying the height and width. The addRule method adds the equivalent of the xml properly android:layout_below. Then you just call View#setLayoutParams on the view you want to have those params.
How to lay out Views in RelativeLayout programmatically?
From what I’ve been able to piece together, you have to add the view using LayoutParams. LinearLayout linearLayout = new LinearLayout(this); RelativeLayout.LayoutParams relativeParams = new RelativeLayout.LayoutParams( LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT); relativeParams.addRule(RelativeLayout.ALIGN_PARENT_TOP); parentView.addView(linearLayout, relativeParams); All credit to sechastain, to relatively position your items programmatically you have to assign ids to them. TextView tv1 = new TextView(this); tv1.setId(1); TextView … Read more
Defining Z order of views of RelativeLayout in Android
The easiest way is simply to pay attention to the order in which the Views are added to your XML file. Lower down in the file means higher up in the Z-axis. Edit: This is documented here and here on the Android developer site. (Thanks @flightplanner)