Android 图片显示与屏幕适配的问题

android 图片显示与屏幕适配的问题

在android开发中比较头疼的是android的分辨率问题，那么这里给大家介绍个万能办法，这个办法的优点是可以实现万能适应，给开发和美工设计提供了依据，但是对开发来说代码量也不少，具体办法：

（1）获取屏幕的尺寸

windowmanager windowmanager = (windowmanager)     getsystemservice(context.window_service);
display d = windowmanager.getdefaultdisplay();
mwidth = d.getwidth();mheight = d.getheight();
displaymetrics dm = getresources().getdisplaymetrics()
mscreendensity = dm.density;

（2）美工设计图的尺寸

uiwidth,uiheight

（3）获取缩放比例

float scalewidth = mwidth / uiwidth;
float scaleheight = mheight/ uiheight;

（4）所有布局的尺寸用代码实现：

public static int getwidthsize(int size) {
        return (int) (size * scalewidth);
    }

    public static int gethightsize(int size) {
        return (int) (size * scaleheight);
    }

    public static float gettextsize(int pxsize) {
        return (pxsize * scaleheight) / mscreendensity;
    }

    public static void setviewsize(int width, int height, view v) {
        int paramwidth = getwidthsize(width);
        int paramheight = gethightsize(height);
        viewgroup.marginlayoutparams params = (viewgroup.marginlayoutparams) v
                .getlayoutparams();
        if (width != invalid) {
            params.width = paramwidth;
        }
        if (height != invalid) {
            params.height = paramheight;
        }
        v.setlayoutparams(params);
    }

    public static void setviewpadding(int left, int top, int right, int bottom,
            view v) {
        left = getwidthsize(left);
        top = gethightsize(top);
        right = getwidthsize(right);
        bottom = getwidthsize(bottom);
        v.setpadding(left, top, right, bottom);
    }

    public static void setviewmargin(int left, int top, int right, int bottom,
            view v) {
        int paramleft = getwidthsize(left);
        int paramtop = gethightsize(top);
        int paramright = getwidthsize(right);
        int parambottom = gethightsize(bottom);
        viewgroup.marginlayoutparams params = (viewgroup.marginlayoutparams) v
                .getlayoutparams();
        if (left != invalid) {
            params.leftmargin = paramleft;
        }
        if (right != invalid) {
            params.rightmargin = paramright;
        }
        if (top != invalid) {
            params.topmargin = paramtop;
        }
        if (bottom != invalid) {
            params.bottommargin = parambottom;
        }
        v.setlayoutparams(params);}

（5）这里是设置尺寸的代码：

setviewsize(100, 100, mview);
    setviewmargin(20, 0, 0, 20, mview);
    setviewpadding(10, 10, 10, 10, mview);
    mtextview.settextsize(gettextsize(30));

由上在设计效果图时，可对图内元素进行尺寸标注，程序即可实现按比例缩放。

以上就是android 图片显示与屏幕适配的问题的万能解决办法，如有疑问请留言或者到本站社区交流讨论，感谢阅读，希望能帮助到大家，谢谢大家对本站的支持！