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！