Android万能分辨率适应法

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，具体办法你听我来说：

（1）获取屏幕的尺寸

1WindowManager windowManager = (WindowManager)
2         getSystemService(Context.WINDOW_SERVICE);
3 Display d = windowManager.getDefaultDisplay();
4 mWidth = d.getWidth();
5 mHeight = d.getHeight();
6 DisplayMetrics dm = getResources().getDisplayMetrics();
7 mScreenDensity = dm.density;

（2）美工设计图的尺寸

uiWidth,uiHeight

（3）获取缩放比例

1float scaleWidth = mWidth / uiWidth;
2float scaleHeight = mHeight/ uiHeight;

（4）所有布局的尺寸用代码实现：

01public static int getWidthSize(int size){
02    return (int) (size * scaleWidth);
03}
04 
05public static int getHightSize(int size){
06    return (int) (size * scaleHeight);
07}
08 
09public static float getTextSize(int pxSize){
10    return (pxSize*scaleHeight) / mScreenDensity;
11}
12 
13public static void setViewSize(int width, int height, View v){
14    int paramWidth = getWidthSize(width);
15    int paramHeight = getHightSize(height);
16    ViewGroup.MarginLayoutParams params
17           = (ViewGroup.MarginLayoutParams) v.getLayoutParams();
18    if (width != INVALID){
19        params.width = paramWidth;
20    }
21    if (height != INVALID){
22        params.height = paramHeight;
23    }
24    v.setLayoutParams(params);
25}
26 
27public static void setViewPadding(int left, int top, int right, int bottom,
28        View v){
29    left = getWidthSize(left);
30    top = getHightSize(top);
31    right = getWidthSize(right);
32    bottom = getWidthSize(bottom);
33    v.setPadding(left, top, right, bottom);
34}
35 
36 
37public static void setViewMargin(int left, int top, int right, int bottom,
38        View v){
39    int paramLeft = getWidthSize(left);
40    int paramTop =  getHightSize(top);
41    int paramRight = getWidthSize(right);
42    int paramBottom = getHightSize(bottom);
43    ViewGroup.MarginLayoutParams params = (ViewGroup.MarginLayoutParams)
44                 v.getLayoutParams();
45    if (left != INVALID){
46        params.leftMargin = paramLeft;
47    }
48    if (right != INVALID){
49        params.rightMargin = paramRight;
50    }
51    if (top != INVALID){
52        params.topMargin = paramTop;
53    }
54    if (bottom != INVALID){
55        params.bottomMargin = paramBottom;
56    }
57    v.setLayoutParams(params);
58}

（5）这里是设置尺寸的代码：

1setViewSize(100, 100, mView);
2setViewMargin(20, 0, 0, 20, mView);
3setViewPadding(10, 10, 10, 10, mView);
4mTextView.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。