measure View by width and height - Android User Interface

Android examples for User Interface:View Size

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Description

measure View by width and height

Demo Code


//package com.java2s;

import android.view.View;

import android.view.ViewGroup;

public class Main {

    public static void measureView(View view, int width, int height) {
        ViewGroup.LayoutParams params = view.getLayoutParams();
        if (params == null) {
            params = new ViewGroup.LayoutParams(width, height);
        }//from w  w w  .  j  a  v  a 2 s  . co  m
        int mWidth = ViewGroup.getChildMeasureSpec(0, 0, params.width);

        int mHeight;
        int tempHeight = params.height;
        if (tempHeight > 0) {
            mHeight = View.MeasureSpec.makeMeasureSpec(tempHeight,
                    View.MeasureSpec.EXACTLY);
        } else {
            mHeight = View.MeasureSpec.makeMeasureSpec(0,
                    View.MeasureSpec.UNSPECIFIED);
        }
        view.measure(mWidth, mHeight);
    }

    public static final View measure(View view) {
        ViewGroup.LayoutParams p = view.getLayoutParams();
        if (p == null) {
            p = new ViewGroup.LayoutParams(
                    ViewGroup.LayoutParams.MATCH_PARENT,
                    ViewGroup.LayoutParams.WRAP_CONTENT);
        }
        int childWidthSpec = ViewGroup.getChildMeasureSpec(0, 0 + 0,
                p.width);
        int lpHeight = p.height;
        int childHeightSpec;
        if (lpHeight > 0) {
            childHeightSpec = View.MeasureSpec.makeMeasureSpec(lpHeight,
                    View.MeasureSpec.EXACTLY);
        } else {
            childHeightSpec = View.MeasureSpec.makeMeasureSpec(0,
                    View.MeasureSpec.UNSPECIFIED);
        }
        view.measure(childWidthSpec, childHeightSpec);
        return view;
    }
}

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