ResourceUtils

Posted 2022-11-16 z_fishLong

import android.content.Context;
import android.util.TypedValue;


public class ResourceUtils 

    private static TypedValue mTmpValue = new TypedValue();

    private ResourceUtils() 

    

    /**
     * 获取 dimens.xml 定义的文本的值
     * @param context
     * @param resourceId
     * @return if R.dimen.id defined is dp size return the dp size; if R.dimen.id defined is sp size
     *         return the sp size
     */
    public static int getDimenXmlDefSize(Context context, int resourceId) 
        synchronized (mTmpValue) 
            TypedValue value = mTmpValue;
            context.getResources().getValue(resourceId, value, true);
            return (int) TypedValue.complexToFloat(value.data);
        
    

    /**
     * 将px值转换为dip或dp值，保证尺寸大小不变
     * 
     * @param context
     * @param pxValue
     * @return
     */
    public static int px2dip(Context context, float pxValue) 
        final float scale = context.getResources().getDisplayMetrics().density;
        return (int) (pxValue / scale + 0.5f);
    

    /**
     * 将dip或dp值转换为px值，保证尺寸大小不变
     * 
     * @param dipValue
     * @param scale
     * @return
     */
    public static int dip2px(Context context, float dipValue) 
        final float scale = context.getResources().getDisplayMetrics().density;
        return (int) (dipValue * scale + 0.5f);
    

    /**
     * 将px值转换为sp值，保证文字大小不变
     * 
     * @param pxValue
     * @param fontScale
     * @return
     */
    public static int px2sp(Context context, float pxValue) 
        final float fontScale = context.getResources().getDisplayMetrics().scaledDensity;
        return (int) (pxValue / fontScale + 0.5f);
    

    /**
     * 将px值转换为sp值，保证文字大小不变
     * 
     * @param spValue
     * @param fontScale
     * @return
     */
    public static int sp2px(Context context, float spValue) 
        final float fontScale = context.getResources().getDisplayMetrics().scaledDensity;
        return (int) (spValue * fontScale + 0.5f);