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

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WindowManager windowManager = (WindowManager)

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        getSystemService(Context.WINDOW_SERVICE);

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Display d = windowManager.getDefaultDisplay();

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mWidth = d.getWidth();

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mHeight = d.getHeight();

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DisplayMetrics dm = getResources().getDisplayMetrics();

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mScreenDensity = dm.density;

（2）美工设计图的尺寸

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uiWidth,uiHeight

（3）获取缩放比例

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float scaleWidth =mWidth / uiWidth;

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float scaleHeight =mHeight/ uiHeight;

（4）所有布局的尺寸用代码实现：

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public static int getWidthSize(int size){

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    return(int) (size *scaleWidth);

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}

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public static int getHightSize(int size){

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    return(int) (size *scaleHeight);

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}

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public static float getTextSize(int pxSize){

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    return(pxSize*scaleHeight) / mScreenDensity;

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}

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public static void setViewSize(int width, int height, View v){

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    intparamWidth = getWidthSize(width);

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    intparamHeight = getHightSize(height);

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    ViewGroup.MarginLayoutParamsparams

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           =(ViewGroup.MarginLayoutParams) v.getLayoutParams();

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    if(width != INVALID){

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        params.width= paramWidth;

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    }

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    if(height != INVALID){

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        params.height= paramHeight;

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    }

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    v.setLayoutParams(params);

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}

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public static void setViewPadding(int left, int top, int right, int bottom,

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        Viewv){

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    left= getWidthSize(left);

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    top= getHightSize(top);

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    right= getWidthSize(right);

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    bottom= getWidthSize(bottom);

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    v.setPadding(left,top, right, bottom);

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}

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public static void setViewMargin(int left, int top, int right, int bottom,

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        Viewv){

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    intparamLeft = getWidthSize(left);

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    intparamTop =  getHightSize(top);

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    intparamRight = getWidthSize(right);

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    intparamBottom = getHightSize(bottom);

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    ViewGroup.MarginLayoutParamsparams = (ViewGroup.MarginLayoutParams)

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                 v.getLayoutParams();

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    if(left != INVALID){

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        params.leftMargin= paramLeft;

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    }

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    if(right != INVALID){

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        params.rightMargin= paramRight;

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    }

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    if(top != INVALID){

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        params.topMargin= paramTop;

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    }

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    if(bottom != INVALID){

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        params.bottomMargin= paramBottom;

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    }

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    v.setLayoutParams(params);

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}

   （5）这里是设置尺寸的代码：

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setViewSize(100, 100, mView);

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

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setViewPadding(10, 10, 10,10, mView);

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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。