1. Android原生设置沉浸式状态栏，设置状态栏颜色，字体颜色
import android.annotation.TargetApi;import android.app.Activity;import android.content.Context;import android.graphics.Color;import android.os.Build;import android.util.Log;import android.view.View;import android.view.ViewGroup;import android.view.Window;import android.view.WindowManager;import androidx.annotation.ColorInt;import androidx.annotation.IntRange;import androidx.annotation.NonNull;import androidx.annotation.RequiresApi;import java.lang.ref.WeakReference;import java.lang.reflect.Field;import java.lang.reflect.Method;import java.util.regex.Pattern;public class StatusBarUtil {private static final int DEFAULT_ALPHA = 0;/*** 设置状态栏颜色（自定义颜色)** @param activity 目标activity* @param color 状态栏颜色值*/public static void setColor(@NonNull Activity activity, @ColorInt int color) {WeakReference<Activity> activityWeakReference = new WeakReference<>(activity);setColor(activityWeakReference.get(), color, DEFAULT_ALPHA);}/*** 设置纯色状态栏（自定义颜色，alpha）** @param activity 目标activity* @param color 状态栏颜色值* @param alpha 状态栏透明度*/public static void setColor(@NonNull Activity activity, @ColorInt int color, @IntRange(from = 0, to = 255) int alpha) {WeakReference<Activity> activityWeakReference = new WeakReference<>(activity);Window window = activityWeakReference.get().getWindow();if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {window.clearFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);window.addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);window.setStatusBarColor(cipherColor(color, alpha));} else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {window.addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);setTranslucentView((ViewGroup) window.getDecorView(), color, alpha);setRootView(activityWeakReference.get(), true);}}/*** 设置状态栏渐变颜色** @param activity 目标activity* @param view目标View*/public static void setGradientColor(@NonNull Activity activity, View view) {WeakReference<Activity> activityWeakReference = new WeakReference<>(activity);ViewGroup decorView = (ViewGroup) activityWeakReference.get().getWindow().getDecorView();View fakeStatusBarView = decorView.findViewById(android.R.id.custom);if (fakeStatusBarView != null) {decorView.removeView(fakeStatusBarView);}setRootView(activityWeakReference.get(), false);setTransparentForWindow(activityWeakReference.get());setPaddingTop(activityWeakReference.get(), view);}/*** 设置透明状态栏** @param activity 目标界面*/public static void setTransparentForWindow(@NonNull Activity activity) {WeakReference<Activity> activityWeakReference = new WeakReference<>(activity);Window window = activityWeakReference.get().getWindow();if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {window.addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);window.setStatusBarColor(Color.TRANSPARENT);window.getDecorView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN);} else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {window.setFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS, WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);}}/*** 增加View的paddingTop,增加的值为状态栏高度 (智能判断，并设置高度)** @param context 目标Context* @param view 需要增高的View*/public static void setPaddingTop(Context context, @NonNull View view) {if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {ViewGroup.LayoutParams lp = view.getLayoutParams();if (lp != null && lp.height > 0 && view.getPaddingTop() == 0) {lp.height += getStatusBarHeight(context);view.setPadding(view.getPaddingLeft(), view.getPaddingTop() + getStatusBarHeight(context),view.getPaddingRight(), view.getPaddingBottom());}}}/*** 设置状态栏darkMode,字体颜色及icon变黑(目前支持MIUI6以上,Flyme4以上,Android M以上)** @param activity 目标activity*/public static void setDarkMode(@NonNull Activity activity) {WeakReference<Activity> activityWeakReference = new WeakReference<>(activity);darkMode(activityWeakReference.get().getWindow(), true);}/*** 设置状态栏darkMode,字体颜色及icon变亮(目前支持MIUI6以上,Flyme4以上,Android M以上)** @param activity 目标activity*/public static void setLightMode(@NonNull Activity activity) {WeakReference<Activity> activityWeakReference = new WeakReference<>(activity);darkMode(activityWeakReference.get().getWindow(), false);}@TargetApi(Build.VERSION_CODES.M)private static void darkMode(Window window, boolean dark) {if (isFlyme4()) {setModeForFlyme4(window, dark);} else if (isMIUI6()) {setModeForMIUI6(window, dark);}darkModeForM(window, dark);}/*** android 6.0设置字体颜色** @param window 目标window* @param dark 亮色 or 暗色*/@RequiresApi(Build.VERSION_CODES.M)private static void darkModeForM(Window window, boolean dark) {if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {int systemUiVisibility = window.getDecorView().getSystemUiVisibility();if (dark) {systemUiVisibility |= View.SYSTEM_UI_FLAG_LIGHT_STATUS_BAR;} else {systemUiVisibility &= ~View.SYSTEM_UI_FLAG_LIGHT_STATUS_BAR;}window.getDecorView().setSystemUiVisibility(systemUiVisibility);}}/*** 设置MIUI6+的状态栏的darkMode,darkMode时候字体颜色及icon* /doc/p=4769/** @param window 目标window* @param dark 亮色 or 暗色*/private static void setModeForMIUI6(Window window, boolean dark) {Class<? extends Window> clazz = window.getClass();try {Class<?> layoutParams = Class.forName("android.view.MiuiWindowManager$LayoutParams");Field field = layoutParams.getField("EXTRA_FLAG_STATUS_BAR_DARK_MODE");int darkModeFlag = field.getInt(layoutParams);Method extraFlagField = clazz.getMethod("setExtraFlags", int.class, int.class);extraFlagField.invoke(window, dark ? darkModeFlag : 0, darkModeFlag);} catch (Exception e) {Log.e("StatusBar", "darkIcon: failed");}}/*** 设置Flyme4+的状态栏的darkMode,darkMode时候字体颜色及icon* http://open-/index.php?title=Flyme%E7%B3%BB%E7%BB%9FAPI** @param window 目标window* @param dark 亮色 or 暗色*/private static void setModeForFlyme4(Window window, boolean dark) {try {WindowManager.LayoutParams lp = window.getAttributes();Field darkFlag = WindowManager.LayoutParams.class.getDeclaredField("MEIZU_FLAG_DARK_STATUS_BAR_ICON");Field meizuFlags = WindowManager.LayoutParams.class.getDeclaredField("meizuFlags");darkFlag.setAccessible(true);meizuFlags.setAccessible(true);int bit = darkFlag.getInt(null);int value = meizuFlags.getInt(lp);if (dark) {value |= bit;} else {value &= ~bit;}meizuFlags.setInt(lp, value);window.setAttributes(lp);} catch (Exception e) {Log.e("StatusBar", "darkIcon: failed");}}/*** 判断是否Flyme4以上*/private static boolean isFlyme4() {return Build.FINGERPRINT.contains("Flyme_OS_4") || Build.VERSION.INCREMENTAL.contains("Flyme_OS_4")|| pile("Flyme OS [4|5]", Pattern.CASE_INSENSITIVE).matcher(Build.DISPLAY).find();}/*** 判断是否MIUI6以上*/private static boolean isMIUI6() {try {Class<?> clz = Class.forName("android.os.SystemProperties");Method mtd = clz.getMethod("get", String.class);String val = (String) mtd.invoke(null, "ro.miui.ui.version.name");val = val.replaceAll("[vV]", "");int version = Integer.parseInt(val);return version >= 6;} catch (Exception e) {return false;}}/*** 计算alpha色值** @param color 状态栏颜色值* @param alpha 状态栏透明度*/private static int cipherColor(@ColorInt int color, int alpha) {if (alpha == 0) {return color;}float a = 1 - alpha / 255f;int red = color >> 16 & 0xff;int green = color >> 8 & 0xff;int blue = color & 0xff;red = (int) (red * a + 0.5);green = (int) (green * a + 0.5);blue = (int) (blue * a + 0.5);return 0xff << 24 | red << 16 | green << 8 | blue;}/*** 创建透明View** @param viewGroup 目标视图* @param color状态栏颜色值* @param alpha状态栏透明度*/private static void setTranslucentView(ViewGroup viewGroup, @ColorInt int color, @IntRange(from = 0, to = 255) int alpha) {if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {int cipherColor = cipherColor(color, alpha);View translucentView = viewGroup.findViewById(android.R.id.custom);if (translucentView == null && cipherColor != 0) {translucentView = new View(viewGroup.getContext());translucentView.setId(android.R.id.custom);ViewGroup.LayoutParams params =new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, getStatusBarHeight(viewGroup.getContext()));viewGroup.addView(translucentView, params);}if (translucentView != null) {translucentView.setBackgroundColor(cipherColor);}}}/*** 设置根布局参数** @param activity 目标activity* @param fitSystemWindows 是否预留toolbar的高度*/private static void setRootView(Activity activity, boolean fitSystemWindows) {WeakReference<Activity> activityWeakReference = new WeakReference<>(activity);ViewGroup parent = activityWeakReference.get().findViewById(android.R.id.content);for (int i = 0, count = parent.getChildCount(); i < count; i++) {View childView = parent.getChildAt(i);if (childView instanceof ViewGroup) {childView.setFitsSystemWindows(fitSystemWindows);((ViewGroup) childView).setClipToPadding(fitSystemWindows);}}}/*** 获取状态栏高度** @param context 目标Context*/public static int getStatusBarHeight(Context context) {// 获得状态栏高度int resourceId = context.getResources().getIdentifier("status_bar_height", "dimen", "android");return context.getResources().getDimensionPixelSize(resourceId);}}
flutter Android 设置沉浸式窗台兰，在flutter项目lib下的main方法下加如下代码，在runApp之后加
//设置状态栏沉浸式（修改flutter状态栏黑色半透明为全透明）if (defaultTargetPlatform == TargetPlatform.android) {SystemUiOverlayStyle systemUiOverlayStyle = SystemUiOverlayStyle(statusBarColor: Colors.blue,//该颜色也可以设置成透明或者半透明statusBarBrightness: Brightness.dark,);SystemChrome.setSystemUIOverlayStyle(systemUiOverlayStyle);}
