• Android 夜间模式的实现


    package com.loaderman.daynightdemo;
    
    import android.os.Bundle;
    import android.support.v7.app.AppCompatActivity;
    import android.support.v7.app.AppCompatDelegate;
    import android.support.v7.widget.Toolbar;
    import android.view.View;
    
    public class MainActivity extends AppCompatActivity implements View.OnClickListener {
    
        {
            AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_AUTO);
        }
    
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
            Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
            setSupportActionBar(toolbar);
    
            findViewById(R.id.btn_auto).setOnClickListener(this);
            findViewById(R.id.btn_day).setOnClickListener(this);
            findViewById(R.id.btn_night).setOnClickListener(this);
            findViewById(R.id.fab).setOnClickListener(this);
        }
    
        @Override
        public void onClick(View v) {
            switch (v.getId()) {
                case R.id.btn_auto: {
                    getDelegate().setLocalNightMode(AppCompatDelegate.MODE_NIGHT_AUTO);
                    recreate();
                    break;
                }
                case R.id.btn_day: {
                    getDelegate().setLocalNightMode(AppCompatDelegate.MODE_NIGHT_NO);
                    recreate();
                    break;
                }
                case R.id.btn_night: {
                    getDelegate().setLocalNightMode(AppCompatDelegate.MODE_NIGHT_YES);
                    recreate();
                    break;
                }
            }
        }
    }
    

     activity_main.xml

    <?xml version="1.0" encoding="utf-8"?>
    <android.support.design.widget.CoordinatorLayout
        xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:app="http://schemas.android.com/apk/res-auto"
        xmlns:tools="http://schemas.android.com/tools"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:fitsSystemWindows="true"
        tools:context="com.yanzhenjie.daynight.MainActivity">
    
        <android.support.design.widget.AppBarLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:theme="@style/AppTheme.AppBarOverlay">
    
            <android.support.v7.widget.Toolbar
                android:id="@+id/toolbar"
                android:layout_width="match_parent"
                android:layout_height="?attr/actionBarSize"
                android:background="?attr/colorPrimary"
                app:popupTheme="@style/AppTheme.PopupOverlay"/>
    
        </android.support.design.widget.AppBarLayout>
    
        <include layout="@layout/content_main"/>
    
        <android.support.design.widget.FloatingActionButton
            android:id="@+id/fab"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="bottom|end"
            android:layout_margin="@dimen/fab_margin"
            android:src="@android:drawable/ic_dialog_email"/>
    
    </android.support.design.widget.CoordinatorLayout>
    

     content_main.xml

    <?xml version="1.0" encoding="utf-8"?>
    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:app="http://schemas.android.com/apk/res-auto"
        xmlns:tools="http://schemas.android.com/tools"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical"
        android:paddingBottom="@dimen/activity_vertical_margin"
        android:paddingLeft="@dimen/activity_horizontal_margin"
        android:paddingRight="@dimen/activity_horizontal_margin"
        android:paddingTop="@dimen/activity_vertical_margin"
        app:layout_behavior="@string/appbar_scrolling_view_behavior"
        tools:context="com.yanzhenjie.daynight.MainActivity"
        tools:showIn="@layout/activity_main">
    
        <Button
            android:id="@+id/btn_auto"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="自动模式" />
    
        <Button
            android:id="@+id/btn_day"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="日间模式" />
    
        <Button
            android:id="@+id/btn_night"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="夜间模式" />
    </LinearLayout>
    

     style.xml

    <resources>
    
        <style name="AppTheme" parent="Theme.AppCompat.DayNight.DarkActionBar">
            <item name="colorPrimary">@color/colorPrimary</item>
            <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
            <item name="colorAccent">@color/colorAccent</item>
        </style>
    
        <style name="AppTheme.NoActionBar">
            <item name="windowActionBar">false</item>
            <item name="windowNoTitle">true</item>
        </style>
    
        <style name="AppTheme.AppBarOverlay" parent="ThemeOverlay.AppCompat.Dark.ActionBar" />
    
        <style name="AppTheme.PopupOverlay" parent="ThemeOverlay.AppCompat.Light" />
    
    </resources>
    

     AndroidMainfest.xml

    <?xml version="1.0" encoding="utf-8"?>
    <manifest xmlns:android="http://schemas.android.com/apk/res/android"
        package="com.loaderman.daynightdemo">
    
        <application
            android:allowBackup="true"
            android:icon="@mipmap/ic_launcher"
            android:label="@string/app_name"
            android:supportsRtl="true"
            android:theme="@style/AppTheme">
            <activity
                android:name=".MainActivity"
                android:label="@string/app_name"
                android:theme="@style/AppTheme.NoActionBar">
                <intent-filter>
                    <action android:name="android.intent.action.MAIN" />
    
                    <category android:name="android.intent.category.LAUNCHER" />
                </intent-filter>
            </activity>
        </application>
    
    </manifest>
    

     效果图:

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  • 原文地址:https://www.cnblogs.com/loaderman/p/6596964.html
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