Android万能分辨率适应法

来源：互联网发布：视频加背景音乐软件编辑：程序博客网时间：2024/06/02 21:43

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

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(intsize){
return(int) (size * scaleWidth);
}
 
public static int getHightSize(intsize){
return(int) (size * scaleHeight);
}
 
public static float getTextSize(intpxSize){
return(pxSize*scaleHeight) / mScreenDensity;
}
 
public static void setViewSize(intwidth,int height, View v){
intparamWidth = getWidthSize(width);
intparamHeight = 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(intleft,int top, int right,intbottom,
View v){
left = getWidthSize(left);
top = getHightSize(top);
right = getWidthSize(right);
bottom = getWidthSize(bottom);
v.setPadding(left, top, right, bottom);
}
 
 
public static void setViewMargin(intleft,int top, int right,intbottom,
View v){
intparamLeft = getWidthSize(left);
intparamTop = getHightSize(top);
intparamRight = getWidthSize(right);
intparamBottom = 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。

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