如何使用启动画面正确显示黑暗与光明主题 [英] How to have a properly Dark and Light Theme with Splash Screen

问题描述

我已经读过，有一种方法可以让值夜和值文件夹存在.但是由于我的启动画面，如何在开始前的晚上从值更改为值.我知道，由于WhatsApp，必须有一种方法可以设置以深色和浅色为主题的启动画面.

I have read that there is a way to have a values-night and a values folder. But how to change from values to values-night before starting ,because of my splash screen. I know that there must be a way to have a dark and light themed splash screen ,because of WhatsApp.

如何在显示启动屏幕前更改为晚上的值?

How to change to values-night before Splash Screen is shown?

推荐答案

请尝试在下面使用的暗模式代码.

Try below dark mode code which I am use.

步骤-1

首先将 night 文件夹创建到资源文件中，如下图所示(即values-night)

First of create night folder into your resource file like below image(i.e. values-night)

步骤-2

为夜间模式创建样式，字符串和颜色 xml文件，与下图相同，并添加要在应用中显示的夜间模式的颜色，字符串和样式当应用夜间模式时.

Create styles,strings and colors xml file for night mode same as below image and add your night mode color,string and style which you want to show in your app when night mode was apply.

为获得更好的用户体验，请在您的样式中添加窗口动画.

For better user experience add window Animation in your style.

值-> style.xml

<resources xmlns:tools="http://schemas.android.com/tools">

    <!-- Base application theme. -->
    <style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
        <!-- Customize your theme here. -->
        <item name="colorPrimary">@color/colorPrimary</item>
        <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
        <item name="colorAccent">@color/colorAccent</item>
    </style>

    <style name="NoActionBarAppTheme" parent="Theme.AppCompat.DayNight.NoActionBar">
        <!-- Customize your theme here. -->
        <item name="colorPrimary">@color/white</item>
        <item name="colorPrimaryDark">@color/white</item>
        <item name="colorAccent">@color/main_click_txt</item>
        <item name="android:windowLightStatusBar" tools:targetApi="m">true</item>
    </style>

    <!-- Add this theme where you change mode -->
    <style name="NoActionBarWithChangeTheme" parent="Theme.AppCompat.DayNight.NoActionBar">
        <!-- Customize your theme here. -->
        <item name="colorPrimary">@color/white</item>
        <item name="colorPrimaryDark">@color/white</item>
        <item name="colorAccent">@color/main_click_txt</item>
        <item name="android:windowAnimationStyle">@style/WindowAnimationTransition</item>
        <item name="android:windowLightStatusBar" tools:targetApi="m">true</item>
    </style>

    <!-- This will set the fade in animation on your change theme activity by default -->
    <style name="WindowAnimationTransition">
        <item name="android:windowEnterAnimation">@anim/fade_in</item>
        <item name="android:windowExitAnimation">@anim/fade_out</item>
    </style>

</resources>

值之夜-> style.xml

<!-- Base application theme. values-night.xml -->
<style name="NoActionBarAppTheme" parent="Theme.AppCompat.DayNight.NoActionBar">
    <!-- Customize your theme here. -->
    <item name="colorPrimary">@color/white</item>
    <item name="colorPrimaryDark">@color/white</item>
    <item name="colorAccent">@color/main_click_txt</item>
    <item name="android:windowLightStatusBar" tools:targetApi="m">true</item>
</style>

<!-- Add this theme where you change mode -->
<style name="NoActionBarWithChangeTheme" parent="Theme.AppCompat.DayNight.NoActionBar">
    <!-- Customize your theme here. -->
    <item name="colorPrimary">@color/white</item>
    <item name="colorPrimaryDark">@color/white</item>
    <item name="colorAccent">@color/main_click_txt</item>
    <item name="android:windowAnimationStyle">@style/WindowAnimationTransition</item>
    <item name="android:windowLightStatusBar" tools:targetApi="m">true</item>
</style>

<!-- This will set the fade in animation on your change activity by default -->
<style name="WindowAnimationTransition">
    <item name="android:windowEnterAnimation">@anim/fade_in</item>
    <item name="android:windowExitAnimation">@anim/fade_out</item>
</style>

fade_in.xml

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android" android:interpolator="@android:anim/linear_interpolator">
    <alpha
        android:duration="2000"
        android:fromAlpha="0.0"
        android:toAlpha="1.0">
    </alpha>
</set>

fade_out.xml

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
    android:interpolator="@android:anim/linear_interpolator">
    <alpha
        android:duration="2000"
        android:fromAlpha="1.0"
        android:toAlpha="0.0" >
    </alpha>
</set>

步骤-3

如果要在安装应用程序时第一次根据设备模式设置夜间模式，请在初始屏幕中添加以下代码.

Add this below code in your splash screen if you want to set night mode as per device mode first time when application installed.

@Override
protected void onCreate(Bundle savedInstanceState) {
    if (!CommonUtils.isToogleEnabled(SplashActivity.this)) {
        if (CommonUtils.isDarkMode(SplashActivity.this)) {
            CommonUtils.setIsNightModeEnabled(SplashActivity.this, true);
            AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_YES);
        } else {
            CommonUtils.setIsNightModeEnabled(SplashActivity.this, false);
            AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_NO);
        }
    } else {
        if (CommonUtils.isNightModeEnabled(SplashActivity.this)) {
            AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_YES);
        } else {
            AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_NO);
        }
    }
    super.onCreate(savedInstanceState);

    ...
    //your code
}

步骤-4

将以下代码添加到您的所有活动中

Add this below code in your all activity

@Override
protected void onCreate(Bundle savedInstanceState) {
    if (CommonUtils.isNightModeEnabled(MainActivity.this)) {
        AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_YES);
    } else {
        AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_NO);
    }
    super.onCreate(savedInstanceState);

    ...
    //your code
}

步骤-5

更改模式，使用下面的代码

private WeakReference<Activity> mActivity;

binding.imgNightMode.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View view) {
        mActivity = new WeakReference<Activity>(MainActivity.this);
        CommonUtils.setIsToogleEnabled(MainActivity.this, true);
        if (CommonUtils.isNightModeEnabled(MainActivity.this)) {
            CommonUtils.setIsNightModeEnabled(MainActivity.this, false);
            mActivity.get().recreate();
        } else {
            CommonUtils.setIsNightModeEnabled(MainActivity.this, true);
            mActivity.get().recreate();
        }
    }
});

以下方法是 CommonUtils .

private static final String NIGHT_MODE = "NIGHT_MODE";
private static final String TOOGLE = "TOOGLE";

public static boolean isNightModeEnabled(Context context) {
    SharedPreferences mPrefs = context.getSharedPreferences("MY_PREF", MODE_PRIVATE);
    return mPrefs.getBoolean(NIGHT_MODE, false);
}

public static void setIsNightModeEnabled(Context context, boolean isNightModeEnabled) {
    SharedPreferences mPrefs = context.getSharedPreferences("MY_PREF", MODE_PRIVATE);
    SharedPreferences.Editor editor = mPrefs.edit();
    editor.putBoolean(NIGHT_MODE, isNightModeEnabled);
    editor.apply();
}

public static void setIsToogleEnabled(Context context, boolean isToogleEnabled) {
    SharedPreferences mPrefs = context.getSharedPreferences("MY_PREF", MODE_PRIVATE);
    SharedPreferences.Editor editor = mPrefs.edit();
    editor.putBoolean(TOOGLE, isToogleEnabled);
    editor.apply();
}

public static boolean isToogleEnabled(Context context) {
    SharedPreferences mPrefs = context.getSharedPreferences("MY_PREF", MODE_PRIVATE);
    return mPrefs.getBoolean(TOOGLE, false);
}

public static boolean isDarkMode(Activity activity) {
    return (activity.getResources().getConfiguration()
            .uiMode & Configuration.UI_MODE_NIGHT_MASK) == Configuration.UI_MODE_NIGHT_YES;
}

我希望这可以为您提供帮助！

I hope this can help you!

谢谢.

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