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有两种方式进行 切换日夜间模式

第一种

先上示例图

日间模式                                                                               夜间模式


主界面布局:


<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android=""
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
>
    <Button
android:id="@+id/change_theme_btn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center_horizontal"
android:onClick="onClick"
android:text="?attr/textContent"
/>
    <TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="100dp"
android:text="Hello World!xinbaba"
android:textColor="?attr/textColorValue"
/>
    <TextView
android:textColor="?attr/textColorValue"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="20dp"
android:text="Hello World!lixin" />
    <TextView
android:textColor="?attr/textColorValue"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="20dp"
android:text="Hello World!xiaoxinxin" />
</LinearLayout>
Values

arrts( 文件中定义了控件的所有属性以及所用控件的声明

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <attr name="textColorValue" format="color"></attr>
    <attr name="textContent" format="string"></attr>
</resources>
colors(当中定义各种颜色值。)

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <color name="colorPrimary">#3F51B5</color>
    <color name="colorPrimaryDark">#303F9F</color>
    <color name="colorAccent">#FF4081</color>
    <color name="background">#252a2e</color>
    <color name="unablebtn">#dcdcdc</color>
    <color name="dark_bg">#505050</color>
    <color name="light">#ECECEC</color>
    <color name="white">#FFFFFF</color>
    <color name="black">#000000</color>
    <color name="green">#05D992</color>
    <color name="zise">#E5004F</color>
    <color name="dark_bg1">#414141</color>
    <color name="pink">#FF5877</color>
    <color name="yellow">#FFFF00</color>
</resources>
strings(当中定义使用到的字符串常量。)

<resources>
    <string name="app_name">DayNightOne</string>
    <string name="change_to_night">切换成夜间模式</string>
    <string name="change_to_day">切换成日间模式</string>
</resources>
styles( 对所有控件的属性值进行了设定

<resources>
<!-- Base application theme. 白天的模式 -->  注意这个 因为改变了name 记得在AndroidManifest中修改<style name="day_theme" 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>
        <item name="android:windowBackground">@color/white</item>
<!--日间模式对应的字体颜色 和日间模式对应的文本内容-->
<item name="textColorValue">@color/black</item>
        <item name="textContent">@string/change_to_night</item>
    </style>
<!-- Base application theme. 夜晚的模式 -->
<style name="night_theme" parent="Theme.AppCompat.Light.DarkActionBar">
<!-- Customize your theme here. -->
<item name="colorPrimary">@color/dark_bg</item>
        <item name="colorPrimaryDark">@color/dark_bg</item>
        <item name="colorAccent">@color/dark_bg</item>
        <item name="android:windowBackground">@color/dark_bg</item>
<!--夜间模式对应的字体颜色 和夜间模式对应的文本内容-->
<item name="textColorValue">@color/white</item>
        <item name="textContent">@string/change_to_day</item>
    </style>
</resources>

下面贴代码

Mainactivity

package com.example.lixin.daynightone;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
/**
 * 第一种实现夜间模式  用设置主题的方式
*/
public class MainActivity extends AppCompatActivity implements View.OnClickListener{
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//设置对应的主题 ,在ui创建好之后设置主题无效,所以要放到setContentView()方法前面setTheme()
ThemeUtil.onActivityCreatedSetTheme(this);
setContentView(R.layout.activity_main);
    }
public void onClick(View view){
//切换日夜间模式
ThemeUtil.ChangeCurrentTheme(this);
    }
}

ThemeUtil

package com.example.lixin.daynightone;
import android.app.Activity;
import android.content.Intent;
import android.preference.PreferenceManager;
/**
 * Created by hua on 2017/8/7.
 */
public class ThemeUtil {
//我当前应用的主题
private static  int theme =0;
//日间模式主题
private static  final int DAY_THEME = 0;
//夜间模式主题
private static final int NIGHT_THEME= 1;
public static void onActivityCreatedSetTheme(Activity activity){
switch (theme){
case DAY_THEME:
activity.setTheme(R.style.day_theme);
break;
case NIGHT_THEME:
activity.setTheme(R.style.night_theme);
break;
        }
    }
//点击按钮改变对应得主题
public static void ChangeCurrentTheme(Activity activity){
//1、改变当前主题的theme变量
switch (theme){
case DAY_THEME:
theme = NIGHT_THEME;
break;
case NIGHT_THEME:
theme = DAY_THEME;
break;
        }
//2、重启这个activity
activity.finish();
//加一个动画        activity.overridePendingTransition(R.anim.sliding_in,R.anim.sliding_out);
activity.startActivity(new Intent(activity,activity.getClass()));
    }
}
最后为了美观加了一个动画(在res里创建一个anim)

sliding_in

<?xml version="1.0" encoding="utf-8"?>
<alpha xmlns:android=""
android:duration="1000"
android:fromAlpha="0.0"
android:toAlpha="1.0"></alpha>
sliding_out

<?xml version="1.0" encoding="utf-8"?>
<alpha xmlns:android=""
android:duration="1000"
android:toAlpha="0.0"
android:fromAlpha="1.0"></alpha>

以上是第一种方法 接下来介绍第二种方法:

示例图

日间模式                                       夜间模式


主界面布局

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android=""
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
>
    <Button
android:text="@string/change_to_content"
android:id="@+id/change_theme_btn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="30dp"
android:gravity="center_horizontal"
android:onClick="onClick"
/>
    <TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="100dp"
android:text="Hello World!"
android:textColor="@color/main_textView"
/>
    <TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="20dp"
android:textColor="@color/main_textView"
android:text="Hello World!" />
    <TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="20dp"
android:textColor="@color/main_textView"
android:text="Hello World!" />
    <ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/ic_launcher"
/>
</LinearLayout>

这个方法创建了两个values  一个是日间模式的  一个是夜间模式的

values - colors

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <color name="colorPrimary">#3F51B5</color>
    <color name="colorPrimaryDark">#303F9F</color>
    <color name="colorAccent">#FF4081</color>
    <color name="main_textView">#FF0000</color> 字体颜色
</resources>

values - strings

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <string name="app_name">DayNightTwo</string>
    <string name="change_to_content">切换成夜间模式</string>
</resources>
values - styles

<resources>
<!-- Base application theme. -->             一定要注意这个 继承这个<style name="AppTheme" parent="Theme.AppCompat.DayNight.DarkActionBar">
<!-- Customize your theme here. -->
<item name="colorPrimary">@color/colorPrimary</item>
        <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
        <item name="colorAccent">@color/colorAccent</item>
    </style>
</resources>

values - night - colors

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <color name="colorPrimary">#35464e</color>
    <color name="colorPrimaryDark">#212a2f</color>
    <color name="colorAccent">#212a2f</color>
    <color name="main_textView">#00FF00</color>
</resources>
values - night - strings

<resources>
    <string name="app_name">DayNightTwo</string>
    <string name="change_to_content">切换成日间模式</string>
</resources>

下面贴代码


Mainactivity

package com.example.lixin.daynighttwo;
import android.content.res.Configuration;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.app.AppCompatDelegate;
import android.view.View;
/**
 * 优雅的实现日夜间模式,第二种实现日间模式的方式
*/
public class MainActivity extends AppCompatActivity implements View.OnClickListener{
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
    }
public void onClick(View view){
//切换日夜间模式
int uiMode;
uiMode = getResources().getConfiguration().uiMode & Configuration.UI_MODE_NIGHT_MASK;
switch (uiMode){
case Configuration.UI_MODE_NIGHT_YES:
AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_NO);
getSharedPreferences("theme",MODE_PRIVATE).edit().putBoolean("night_theme",false).commit();
break;
case Configuration.UI_MODE_NIGHT_NO:
AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_YES);
getSharedPreferences("theme",MODE_PRIVATE).edit().putBoolean("night_theme",true).commit();
break;
        }
//重建
recreate();
    }
}

MyApplication

package com.example.lixin.daynighttwo;
import android.app.Application;
import android.support.v7.app.AppCompatDelegate;
/**
 * Created by hua on 2017/8/7.
 */
public class MyApplication extends Application {
@Override
public void onCreate() {
super.onCreate();
if (getSharedPreferences("theme",MODE_PRIVATE).getBoolean("night_theme",false)){
AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_YES);
        }
    }
}
注意在manifests 加上
android:name=".MyApplication"


本文标签: 日间模式 夜间模式 间模式