这个工具类用于尺寸转换,相信你们都了解。主要是:dp2px, px2dp, sp2px, px2sp。android
package org.yxm.android.utils;
import android.content.Context;
import android.util.TypedValue;
/**
* Created by yxm on 16-6-23.
*/
public class DensityUtil {
private DensityUtil() {
throw new UnsupportedOperationException("cannot be instantiated");
}
/**
* dp转px
*/
public static int dp2px(Context context, float dpVal) {
return (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP,
dpVal, context.getResources().getDisplayMetrics());
}
/**
* sp转px
*/
public static int sp2px(Context context, float spVal) {
return (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_SP,
spVal, context.getResources().getDisplayMetrics());
}
/**
* px转dp
*/
public static float px2dp(Context context, float pxVal) {
final float scale = context.getResources().getDisplayMetrics().density;
return (pxVal / scale);
}
/**
* px转sp
*/
public static float px2sp(Context context, float pxVal) {
return (pxVal / context.getResources().getDisplayMetrics().scaledDensity);
}
}