Android 圖片顯示與屏幕適配的問題
在Android開發中比較頭疼的是Android的分辨率問題，那么這里給大家介紹個萬能辦法，這個辦法的優點是可以實現萬能適應，給開發和美工設計提供了依據，但是對開發來說代碼量也不少，具體辦法：
（1）獲取屏幕的尺寸
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）美工設計圖的尺寸
uiWidth,uiHeight
（3）獲取縮放比例
float scaleWidth = mWidth / uiWidth;float scaleHeight = mHeight/ uiHeight;
（4）所有布局的尺寸用代碼實現：
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）這里是設置尺寸的代碼：
setViewSize(100, 100, mView); setViewMargin(20, 0, 0, 20, mView); setViewPadding(10, 10, 10, 10, mView); mTextView.setTextSize(getTextSize(30));
由上在設計效果圖時，可對圖內元素進行尺寸標注，程序即可實現按比例縮放。
以上就是Android 圖片顯示與屏幕適配的問題的萬能解決辦法，如有疑問請留言或者到本站社區交流討論，感謝閱讀，希望能幫助到大家，謝謝大家對本站的支持！
新聞熱點
疑難解答
