package com.lfk.justwetools.View.ClassTable;
import android.app.Activity;
import android.content.Context;
import android.view.WindowManager;
public class DensityUtil {
public static int getScreenWidth(Activity context) {
return getScreenParams(context)[0];
}
public static int getScreenHeight(Activity context) {
return getScreenParams(context)[1];
}
@SuppressWarnings("deprecation")
private static int[] getScreenParams(Activity mContext) {
WindowManager wm = mContext.getWindowManager();
int width = wm.getDefaultDisplay().getWidth();
int height = wm.getDefaultDisplay().getHeight();
return new int[]{ width, height };
}
/**
* 根据手机的分辨率从 dp 的单位 转成为 px(像素)
*/
public static int dip2px(Context context, float dpValue) {
final float scale = context.getResources().getDisplayMetrics().density;
return (int) (dpValue * scale + 0.5f);
}
/**
* 根据手机的分辨率从 px(像素) 的单位 转成为 dp
*/
public static int px2dip(Context context, float pxValue) {
final float scale = context.getResources().getDisplayMetrics().density;
return (int) (pxValue / scale + 0.5f);
}
/**
* 将px值转换为sp值,保证文字大小不变
*
* @param pxValue
* (DisplayMetrics类中属性scaledDensity)
* @return
*/
public static int px2sp(float pxValue, Context context) {
final float scale = context.getResources().getDisplayMetrics().density;
return (int) (pxValue / scale + 0.5f);
}
/**
* 将sp值转换为px值,保证文字大小不变
*
* @param spValue
* (DisplayMetrics类中属性scaledDensity)
* @return
*/
public static int sp2px(float spValue, Context context) {
final float scale = context.getResources().getDisplayMetrics().density;
return (int) (spValue * scale + 0.5f);
}
}