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import android.content.Context; import android.util.TypedValue; //常用单位转换的辅助类 public class DensityUtils { private DensityUtils() { /* cannot be instantiated */ throw new UnsupportedOperationException("cannot be instantiated"); } /** * dp转px * * @param context * @param val * @return */ public static int dp2px(Context context, float dpVal) { return (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dpVal, context.getResources().getDisplayMetrics()); } /** * sp转px * * @param context * @param val * @return */ public static int sp2px(Context context, float spVal) { return (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_SP, spVal, context.getResources().getDisplayMetrics()); } /** * px转dp * * @param context * @param pxVal * @return */ public static float px2dp(Context context, float pxVal) { final float scale = context.getResources().getDisplayMetrics().density; return (pxVal / scale); } /** * px转sp * * @param fontScale * @param pxVal * @return */ public static float px2sp(Context context, float pxVal) { return (pxVal / context.getResources().getDisplayMetrics().scaledDensity); } }
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原文地址:http://blog.csdn.net/u010794950/article/details/43566297