Android万能分辨率适应法

时间：2014-05-01 21:21:38 收藏：0 阅读：548

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

`1`	`WindowManager 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

`1`	`float` `scaleWidth = mWidth / uiWidth;`

`2`	`float` `scaleHeight = mHeight/ uiHeight;`

（4）所有布局的尺寸用代码实现：

`01`	`public` `static` `int` `getWidthSize(int` `size){`

`02`	`return` `(int) (size * scaleWidth);`

03 }

04

`05`	`public` `static` `int` `getHightSize(int` `size){`

`06`	`return` `(int) (size * scaleHeight);`

07 }

08

`09`	`public` `static` `float` `getTextSize(int` `pxSize){`

`10`	`return` `(pxSize*scaleHeight) / mScreenDensity;`

11 }

12

`13`	`public` `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

`27`	`public` `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

`37`	`public` `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：

`1`	`setViewSize(100,` `100, mView);`

`2`	`setViewMargin(20,` `0,` `0,` `20, mView);`

`3`	`setViewPadding(10,` `10,` `10,` `10, mView);`

`4`	`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。

Android万能分辨率适应法,码迷,mamicode.com