Android螢幕畫素轉換
阿新 • • 發佈:2018-12-21
import android.content.Context; import android.util.TypedValue; /** * Created by Administrator on 2017/6/2. */ public class DensityUtil { private DensityUtil() { /* cannot be instantiated */ throw new UnsupportedOperationException("cannot be instantiated"); } /** * dp轉px * * @param context * @param dpVal * @return */ public static int dp2px(Context context, float dpVal) { return (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dpVal, context.getResources().getDisplayMetrics()); } /** * sp轉px * * @param context * @param spVal * @return */ public static int sp2px(Context context, float spVal) { return (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_SP, spVal, context.getResources().getDisplayMetrics()); } /** * px轉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轉sp * * @param context * @param pxVal * @return */ public static float px2sp(Context context, float pxVal) { return (pxVal / context.getResources().getDisplayMetrics().scaledDensity); } }