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！
