沉浸

package com.bwie.zhangjunjingdong.util;

import android.app.Activity;
import android.graphics.Color;
import android.os.Build;
import android.view.Gravity;
import android.view.View;
import android.view.ViewGroup;
import android.view.Window;
import android.view.WindowManager;
import android.widget.FrameLayout;

public class ChenJinUtil {
    public static void reset(Activity activity) {
        setStatusBarColor(activity, Color.BLACK);
    }

    public static void setStatusBarColor(Activity activity, int color) {

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
                activity.getWindow().setStatusBarColor(color);
            } else {
                setKitKatStatusBarColor(activity, color);
            }
            if (color == Color.TRANSPARENT) {
                removeMarginTop(activity);
            } else {
                addMarginTop(activity);
            }
        }

    }

    private static final String TAG_FAKE_STATUS_BAR_VIEW = "statusBarView";
    private static final String TAG_MARGIN_ADDED = "marginAdded";
    private static void addMarginTop(Activity activity) {
        Window window = activity.getWindow();
        ViewGroup contentView = (ViewGroup) window.findViewById(Window.ID_ANDROID_CONTENT);
        View child = contentView.getChildAt(0);
        if (!TAG_MARGIN_ADDED.equals(child.getTag())) {

            FrameLayout.LayoutParams params = (FrameLayout.LayoutParams) child.getLayoutParams();

            params.topMargin += getStatusBarHeight(activity);
            child.setLayoutParams(params);
            child.setTag(TAG_MARGIN_ADDED);
        }
    }

    private static void removeMarginTop(Activity activity) {
        Window window = activity.getWindow();
        ViewGroup contentView = (ViewGroup) window.findViewById(Window.ID_ANDROID_CONTENT);
        View child = contentView.getChildAt(0);
        if (TAG_MARGIN_ADDED.equals(child.getTag())) {
            FrameLayout.LayoutParams params = (FrameLayout.LayoutParams) child.getLayoutParams();
            params.topMargin -= getStatusBarHeight(activity);
            child.setLayoutParams(params);
            child.setTag(null);
        }
    }

    private static void setKitKatStatusBarColor(Activity activity, int statusBarColor) {
        Window window = activity.getWindow();
        ViewGroup decorView = (ViewGroup) window.getDecorView();

        View fakeView = decorView.findViewWithTag(TAG_FAKE_STATUS_BAR_VIEW);
        if (fakeView != null) {
            decorView.removeView(fakeView);
        }

        View statusBarView = new View(activity);
        FrameLayout.LayoutParams params = new FrameLayout.LayoutParams(
                ViewGroup.LayoutParams.MATCH_PARENT, getStatusBarHeight(activity));
        params.gravity = Gravity.TOP;
        statusBarView.setLayoutParams(params);
        statusBarView.setBackgroundColor(statusBarColor);
        statusBarView.setTag(TAG_FAKE_STATUS_BAR_VIEW);
        decorView.addView(statusBarView);
    }

    public static int getStatusBarHeight(Activity activity) {
        int result = 0;
        int resourceId = activity.getResources().getIdentifier("status_bar_height", "dimen", "android");
        if (resourceId > 0) {
            result = activity.getResources().getDimensionPixelSize(resourceId);
        }
        return result;
    }

    public static void startChenJin(Activity activity) {

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {

                Window window = activity.getWindow();
                View decorView = window.getDecorView();
                int option = View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN | View.SYSTEM_UI_FLAG_LAYOUT_STABLE;
                window.clearFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
                decorView.setSystemUiVisibility(option);
                window.addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);

            } else {
                Window window = activity.getWindow();
                WindowManager.LayoutParams attributes = window.getAttributes();
                int flagTranslucentStatus = WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS;
                attributes.flags |= flagTranslucentStatus;

                window.setAttributes(attributes);
            }

        }
    }
}