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This article mainly introduces the "Android interface one-button gray development dark adaptation mode programming method", in the daily operation, I believe that many people have doubts in the Android interface one-button gray development dark adaptation mode programming method, the editor consulted all kinds of materials, sorted out a simple and useful operation method, hope to answer the "Android interface one-click gray development dark adaptation mode programming method" doubt! Next, please follow the editor to study!

Dark theme tool class package com.example.kotlindemo.utilsimport android.content.Contextimport android.content.res.Configurationimport androidx.appcompat.app.AppCompatDelegateimport androidx.core.content.edit/** * author: chen * data: 2021-10-11 * des: dark theme tool class * / object DarkThemeUtil {private const val DATA_NAME = "DayNight" / / the file name that stores the dark mode state Change / * to determine whether dark mode is enabled or not * / fun isDarkTheme (context: Context): Boolean {val flag = context.resources.configuration.uiMode and Configuration.UI_MODE_NIGHT_MASK return flag = = Configuration.UI_MODE_NIGHT_YES} / * follow the system settings to turn on and off the dark theme * / Fun DefaultTheme () {AppCompatDelegate.setDefaultNightMode (AppCompatDelegate.MODE_NIGHT_FOLLOW_SYSTEM)} / * turn on dark mode * / fun openDarkTheme () {AppCompatDelegate.setDefaultNightMode (AppCompatDelegate.MODE_NIGHT_YES)} / * turn off dark mode * / fun closeDarkTheme () {AppCompatDelegate.setDefaultNightMode (AppCompatDelegate.MODE_NIGHT_) NO)} / * write data to memory * keep the current dark mode state to memory Next time start APP to read * @ param context Context * @ param state dark mode status, true open status False shutdown status * / fun writeDarkThemeState (context: Context, state: Boolean) {context.getSharedPreferences (DATA_NAME, Context.MODE_PRIVATE) .edit {putBoolean ("boolean_dark_theme_state", state)}} / * * read memory data * / fun readDarkThemeState (context: Context): Boolean {return context.getSharedPreferences (DATA_NAME) Context.MODE_PRIVATE) .getBoolean ("boolean_dark_theme_state", false)}} background_color common background color

I'll show it with the common background color of background_color in color. To put it bluntly, Android will automatically switch between the colors you set in different modes.

Code for values/colors.xml # 008577 # 00574B # D81B60 # 000000 # ffffff # 008adb # FF039BE5 # FF40C4FF # FF00B0FF # 66000000 # ffffffvalues-night/colors.xml Code # 111111 # 00574B # D81B60 # 000000 # ffffff # 008adb # FF01579B # FF40C4FF # FF00B0FF # 66000000 # 111111

Add a background color to the xml:

Just open the dark theme adaptation when you want activity.

The effect picture is as follows:

Android interface javaPaint paint = new Paint (); ColorMatrix colorMatrix= new ColorMatrix (); colorMatrix.setSaturation (0); paint.setColorFilter (new ColorMatrixColorFilter (colorMatrix)); getWindow (). GetDecorView (). SetLayerType (View.LAYER_TYPE_HARDWARE, paint) Kotlinval paint = Paint () val colorMatrix = ColorMatrix () colorMatrix.setSaturation (0F) paint.setColorFilter (ColorMatrixColorFilter (colorMatrix)) window.decorView.setLayerType (View.LAYER_TYPE_HARDWARE,paint) so far, the study of "one-click gray Android interface to develop dark adaptation mode programming" is over. I hope to be able to solve your doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!

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