尺寸工具箱DimenUtils

/*
* Copyright (C) 2013 Peng fei Pan <sky@xiaopan.me>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
*   http://www.apache.org/licenses/LICENSE-2.0 *
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/

package me.xiaopan.android.content.res;

import android.content.Context;

/**
* 尺寸工具箱，提供与Android尺寸相关的工具方法
*/
public class DimenUtils {
/**
* dp单位转换为px
* @param context 上下文，需要通过上下文获取到当前屏幕的像素密度
* @param dpValue dp值
* @return px值
*/
public static int dp2px(Context context, float dpValue){
return (int)(dpValue * (context.getResources().getDisplayMetrics().density) + 0.5f);
}

/**
* px单位转换为dp
* @param context 上下文，需要通过上下文获取到当前屏幕的像素密度
* @param pxValue px值
* @return dp值
*/
public static int px2dp(Context context, float pxValue){
return (int)(pxValue / (context.getResources().getDisplayMetrics().density) + 0.5f);
}
}