package com.githang.statusbar;

import android.annotation.TargetApi;
import android.os.Build;
import android.view.View;
import android.view.Window;
import android.view.WindowManager;

/**
 * 兼容M版本
 *
 * @author 黄浩杭 (huanghaohang@parkingwang.com)
 * @version 2016-06-20
 * @since 2016-06-20
 */

class StatusBarCompatM {
    @TargetApi(Build.VERSION_CODES.M)
    static void setStatusBarColor(Window window, int color, boolean lightStatusBar) {
        //取消设置透明状态栏,使 ContentView 内容不再覆盖状态栏
        window.clearFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
        //需要设置这个 flag 才能调用 setStatusBarColor 来设置状态栏颜色
        window.addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);
        //设置状态栏颜色
        window.setStatusBarColor(color);
        View decor = window.getDecorView();
        int ui = decor.getSystemUiVisibility();
        if (lightStatusBar) {
            ui |=View.SYSTEM_UI_FLAG_LIGHT_STATUS_BAR;
        } else {
            ui &= ~View.SYSTEM_UI_FLAG_LIGHT_STATUS_BAR;
        }
        decor.setSystemUiVisibility(ui);
    }

}

package com.githang.statusbar;

import android.annotation.TargetApi;
import android.os.Build;
import android.view.View;
import android.view.Window;
import android.view.WindowManager;

/**
 * 兼容M版本
 *
 * @author 黄浩杭 (huanghaohang@parkingwang.com)
 * @version 2016-06-20
 * @since 2016-06-20
 */

class StatusBarCompatM {
    @TargetApi(Build.VERSION_CODES.M)
    static void setStatusBarColor(Window window, int color, boolean lightStatusBar) {
        //取消设置透明状态栏,使 ContentView 内容不再覆盖状态栏
        window.clearFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
        //需要设置这个 flag 才能调用 setStatusBarColor 来设置状态栏颜色
        window.addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);
        //设置状态栏颜色
        window.setStatusBarColor(color);

        // 设置浅色状态栏时的界面显示
        View decor = window.getDecorView();
        int ui = decor.getSystemUiVisibility();
        if (lightStatusBar) {
            ui |=View.SYSTEM_UI_FLAG_LIGHT_STATUS_BAR;
        } else {
            ui &= ~View.SYSTEM_UI_FLAG_LIGHT_STATUS_BAR;
        }
        decor.setSystemUiVisibility(ui);

        // 去掉系统状态栏下的windowContentOverlay
        View v = window.findViewById(android.R.id.content);
        if (v != null) {
            v.setForeground(null);
        }
    }

}

Remove the shadow below status bar that occurs in version greater than M.