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: