assistant-android/app/src/main/java/com/gh/common/util/DisplayUtils.java

package com.gh.common.util;

import android.app.Activity;
import android.content.Context;
import android.content.res.Resources;
import android.graphics.Color;
import android.os.Build;
import android.view.View;
import android.view.Window;
import android.view.WindowManager;

import com.halo.assistant.HaloApp;

import java.lang.reflect.Field;
import java.lang.reflect.Method;

import androidx.core.content.ContextCompat;

public class DisplayUtils {
    
    /**
     * 根据手机的分辨率从 dip(像素) 的单位 转成为 px
     */
    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 dip
     */
    public static int px2dip(Context context, float pxValue) {
        final float scale = context.getResources().getDisplayMetrics().density;
        return (int) (pxValue / scale + 0.5f);
    }
    
    /**
     * 根据手机的分辨率从 dip(像素) 的单位 转成为 px
     */
    public static int dip2px(float dpValue) {
        final float scale = HaloApp.getInstance()
            .getApplication()
            .getResources()
            .getDisplayMetrics().density;
        return (int) (dpValue * scale + 0.5f);
    }
    
    
    /**
     * 将px值转换为sp值，保证文字大小不变
     *
     * @param pxValue
     * @param pxValue （DisplayMetrics类中属性scaledDensity）
     * @return
     */
    public static int px2sp(Context context, float pxValue) {
        final float fontScale = context.getResources().getDisplayMetrics().scaledDensity;
        return (int) (pxValue / fontScale + 0.5f);
    }
    
    /**
     * 将sp值转换为px值，保证文字大小不变
     *
     * @param spValue
     * @param spValue （DisplayMetrics类中属性scaledDensity）
     * @return
     */
    public static int sp2px(Context context, float spValue) {
        final float fontScale = context.getResources().getDisplayMetrics().scaledDensity;
        return (int) (spValue * fontScale + 0.5f);
    }
    
    /**
     * 获取状态栏的高度
     *
     * @param resources 资源
     * @return height
     */
    public static int getStatusBarHeight(Resources resources) {
        return getInternalDimensionSize(resources, "status_bar_height");
    }
    
    public static int getInternalDimensionSize(Resources res, String key) {
        int result = 0;
        int resourceId = res.getIdentifier(key, "dimen", "android");
        if (resourceId > 0) {
            result = res.getDimensionPixelSize(resourceId);
        }
        return result;
    }
    
    public static void transparentStatusBar(Activity activity) {
        //make full transparent statusBar
        if (Build.VERSION.SDK_INT >= 19 && Build.VERSION.SDK_INT < 21) {
            setWindowFlag(activity, WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS, true);
        }
        if (Build.VERSION.SDK_INT >= 19) {
            activity.getWindow()
                .getDecorView()
                .setSystemUiVisibility(View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN);
        }
        if (Build.VERSION.SDK_INT >= 21) {
            setWindowFlag(activity, WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS, false);
            activity.getWindow().setStatusBarColor(Color.TRANSPARENT);
        }
    }
    
    public static void transparentStatusAndNavigation(Activity activity) {
        //make full transparent statusBar
        if (Build.VERSION.SDK_INT >= 19 && Build.VERSION.SDK_INT < 21) {
            setWindowFlag(activity, WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS | WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION, true);
        }
        if (Build.VERSION.SDK_INT >= 19) {
            activity.getWindow()
                .getDecorView()
                .setSystemUiVisibility(View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION);
        }
        if (Build.VERSION.SDK_INT >= 21) {
            setWindowFlag(activity, WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS | WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION, false);
            activity.getWindow().setStatusBarColor(Color.TRANSPARENT);
            activity.getWindow().setNavigationBarColor(Color.TRANSPARENT);
        }
    }
    
    private static void setWindowFlag(Activity activity, final int bits, boolean on) {
        Window win = activity.getWindow();
        WindowManager.LayoutParams winParams = win.getAttributes();
        if (on) {
            winParams.flags |= bits;
        } else {
            winParams.flags &= ~bits;
        }
        win.setAttributes(winParams);
    }
    
    public static void setLightStatusBar(Activity activity, boolean lightStatusBar) {
        boolean isMIUI = setMIUIStatusBarStyle(activity, lightStatusBar);
        
        if (!isMIUI) {
            Window window = activity.getWindow();
            View decor = window.getDecorView();
            
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
                if (lightStatusBar) {
                    decor.setSystemUiVisibility(View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN | View.SYSTEM_UI_FLAG_LIGHT_STATUS_BAR);
                } else {
                    decor.setSystemUiVisibility(View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN);
                }
            } else {
                decor.setSystemUiVisibility(View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN);
            }
        }
    }
    
    private static boolean setMIUIStatusBarStyle(Activity activity, boolean lightStatusBar) {
        boolean result = false;
        Window window = activity.getWindow();
        if (window != null) {
            Class clazz = window.getClass();
            try {
                int darkModeFlag = 0;
                Class layoutParams = Class.forName("android.view.MiuiWindowManager$LayoutParams");
                Field field = layoutParams.getField("EXTRA_FLAG_STATUS_BAR_DARK_MODE");
                darkModeFlag = field.getInt(layoutParams);
                Method extraFlagField = clazz.getMethod("setExtraFlags", int.class, int.class);
                extraFlagField.invoke(window, lightStatusBar ? darkModeFlag : 0, darkModeFlag);//状态栏透明且黑色字体
                result = true;
                
                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M && lightStatusBar) {
                    //开发版 7.7.13 及以后版本采用了系统API，旧方法无效但不会报错，所以两个方式都要加上
                    activity.getWindow()
                        .getDecorView()
                        .setSystemUiVisibility(View.SYSTEM_UI_FLAG_LIGHT_STATUS_BAR);
                }
            } catch (Exception e) {
                // do nothing
            }
        }
        return result;
    }

    public static void setStatusBarColor(Activity activity,  int color, boolean lightStatusBar) {
        Window window = activity.getWindow();
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
            window.setStatusBarColor(ContextCompat.getColor(activity,color));
        }
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {

            setLightStatusBar(activity,lightStatusBar);

        }
    }
    
}