java - How to specify width of custom view? -


i'm having trouble trying set specific size width of custom view. know can hard-code value in layout_width field in xml file i'm trying not result hard-coding values. need view half size of screen. so, within class find half screen size:

    windowmanager wm = (windowmanager) context.getsystemservice(context.window_service);     display display = wm.getdefaultdisplay();     try{         point size = new point();         display.getsize(size);         screenwidth = size.x;     }catch(nosuchmethoderror e){         screenwidth = display.getwidth();     }

then, call:

 measure(width|measurespec.exactly, layoutparams.wrap_content|measurespec.exactly);  //where width equal half screen width

but not seem working case. so, sum up, how specify particular size custom view? useful , appreciated! thanks!

override onmeasure() method in custom view:

@override protected void onmeasure(int widthmeasurespec, int heightmeasurespec) {     int width = getresources().getdisplaymetrics().widthpixels >> 1;     widthmeasurespec = measurespec.makemeasurespec(width, measurespec.exactly);     super.onmeasure(widthmeasurespec, heightmeasurespec); }

basically, override width measurespec half width of screen, pass through superclass.


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