package com.android.app_base.utils;
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import android.app.Activity;
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import android.app.Application;
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import android.content.ComponentCallbacks;
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import android.content.Context;
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import android.content.res.Configuration;
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import android.util.DisplayMetrics;
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import androidx.annotation.DimenRes;
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import androidx.annotation.NonNull;
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import androidx.annotation.Nullable;
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/**
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* @author Ljj
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* @date 2023.03.13. 17:40
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* @desc 屏幕尺寸转化工具类
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*/
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public class ScreenSizeUtils {
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/**
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* 计算当前的SP的值
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* @param context
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* @param spSize :R.dimen.sp_16
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* @return
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*/
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public static int getSP(Context context, @DimenRes int spSize){
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float pxValue = context.getResources().getDimension(spSize);//获取对应资源文件下的sp值
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//将px值转换成sp值
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return px2sp(context, pxValue);
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}
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/**
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* 计算当前的DP的值
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* @param context
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* @param dpSize :R.dimen.dp_16
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* @return
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*/
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public static int getDP(Context context,@DimenRes int dpSize){
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float pxValue = context.getResources().getDimension(dpSize);//获取对应资源文件下的sp值
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//将px值转换成dp值
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return px2dip(context, pxValue);
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}
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/**
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* 根据手机的分辨率从 dp 的单位 转成为 px(像素)
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*/
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public static int dip2px(Context context, float dpValue) {
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if (context == null) {
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return (int) dpValue;
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}
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final float scale = context.getResources().getDisplayMetrics().density;
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return (int) (dpValue * scale + 0.5f);
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}
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/**
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* 根据手机的分辨率从 px(像素) 的单位 转成为 dp
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*/
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public static int px2dip(Context context, float pxValue) {
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if (context == null) {
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return (int) pxValue;
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}
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final float scale = context.getResources().getDisplayMetrics().density;
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return (int) (pxValue / scale + 0.5f);
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}
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/**
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* px转换为sp
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* @param context
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* @param pxValue
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* @return
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*/
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public static int px2sp(Context context,float pxValue){
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if (context == null) {
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return (int) pxValue;
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}
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final float scale = context.getResources().getDisplayMetrics().scaledDensity;
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return (int) (pxValue / scale + 0.5f);
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}
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public static int getScreenWidth(Context context){
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DisplayMetrics dm = context.getResources().getDisplayMetrics();
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if(dm != null)return dm.widthPixels;
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return 0;
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}
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public static int getScreenHeight(Context context){
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DisplayMetrics dm = context.getResources().getDisplayMetrics();
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if(dm != null)return dm.heightPixels;
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return 0;
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}
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//今日头条屏幕适配方案
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private static float sNoncompatDensity;
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private static float sNoncompatScaledDensity;
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public static void setCustomDensity(@NonNull Activity activity, @NonNull final Application application){
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final DisplayMetrics appDisplayMetrics = application.getResources().getDisplayMetrics();
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if (sNoncompatDensity == 0){
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sNoncompatDensity = appDisplayMetrics.density;
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sNoncompatScaledDensity = appDisplayMetrics.scaledDensity;
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application.registerComponentCallbacks(new ComponentCallbacks() {
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@Override
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public void onConfigurationChanged(@NonNull Configuration newConfig) {
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if (newConfig != null && newConfig.fontScale > 0){
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sNoncompatScaledDensity = application.getResources().getDisplayMetrics().scaledDensity;
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}
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}
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@Override
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public void onLowMemory() {
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}
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});
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}
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final float targetDensity = appDisplayMetrics.widthPixels / 360;
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final float targetScaledDensity = targetDensity * (sNoncompatScaledDensity / sNoncompatDensity);
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final int targetDensityDpi = (int) (160*targetDensity);
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appDisplayMetrics.density = targetDensity;
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appDisplayMetrics.scaledDensity = targetScaledDensity;
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appDisplayMetrics.densityDpi = targetDensityDpi;
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final DisplayMetrics activityDisplayMetrics = activity.getResources().getDisplayMetrics();
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activityDisplayMetrics.density = targetDensity;
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activityDisplayMetrics.scaledDensity = targetScaledDensity;
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activityDisplayMetrics.densityDpi = targetDensityDpi;
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}
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}
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