Android更换主题

类似效果

简单写法 主题属性custom_theme_attrs.xml

1.  
   <?xml version="1.0" encoding="utf-8"?>
2.  
   <resources>
3.  
   <!-- 自定义属性 -->
4.  
   <attr name="text_color" format="color" />
5.  
    
6.  
   <!-- 日间主题 -->
7.  
   <style name="DayTheme" parent="Theme.AppCompat.DayNight.NoActionBar">
8.  
   <item name="text_color">@color/black_tx_color</item>
9.  
   </style>
10.  
     
11.  
    <!-- 夜间主题 -->
12.  
    <style name="NightTheme" parent="Theme.AppCompat.DayNight.NoActionBar">
13.  
    <item name="text_color">@color/white_tx_color</item>
14.  
    </style>
15.  
    </resources>

颜色定义custom_theme_colors.xml

1.  
   <resources>
2.  
   <!-- 日间模式 -->
3.  
   <color name="black_tx_color">#333333</color>
4.  
    
5.  
   <!-- 夜间模式 -->
6.  
   <color name="white_tx_color">#f0f0f0</color>
7.  
   </resources>

布局

1.  
   <LinearLayout
2.  
   android:orientation="vertical" xmlns:android="http://schemas.android.com/apk/res/android"
3.  
   xmlns:tools="http://schemas.android.com/tools"
4.  
   android:id="@ id/root_view"
5.  
   android:layout_width="match_parent"
6.  
   android:layout_height="match_parent"
7.  
   >
8.  
    
9.  
    
10.  
    <Button
11.  
    android:id="@ id/change_btn"
12.  
    android:layout_width="match_parent"
13.  
    android:layout_height="wrap_content"
14.  
    android:layout_marginTop="20dp"
15.  
    android:text="给我改主题"
16.  
    android:textColor="@color/black"
17.  
    />
18.  
     
19.  
    <Button
20.  
    android:textColor="@color/black"
21.  
    android:id="@ id/second_btn"
22.  
    android:layout_width="match_parent"
23.  
    android:layout_height="wrap_content"
24.  
    android:layout_below="@id/change_btn"
25.  
    android:layout_marginTop="20dp"
26.  
    android:text="Recyclerview"
27.  
    />
28.  
     
29.  
    <TextView
30.  
    android:id="@ id/tv_name"
31.  
    android:layout_width="match_parent"
32.  
    android:layout_height="wrap_content"
33.  
    android:layout_marginTop="120dp"
34.  
    android:gravity="center"
35.  
    android:text="aaaaaaaa"
36.  
    android:textColor="?attr/text_color"
37.  
    android:textSize="20dp" />
38.  
     
39.  
     
40.  
     
41.  
    </LinearLayout>

代码片段

1.  
   //切换主题
2.  
   public class MainActivity5 extends AppCompatActivity {
3.  
   Button change_btn;
4.  
   Button second_btn;
5.  
   TextView tv_name;
6.  
   private Colorful mColorful;
7.  
    
8.  
    
9.  
   @Override
10.  
    protected void onCreate(Bundle savedInstanceState) {
11.  
    setTheme(R.style.DayTheme);
12.  
    super.onCreate(savedInstanceState);
13.  
    setContentView(R.layout.activity_main);
14.  
    change_btn = (Button) findViewById(R.id.change_btn);
15.  
    second_btn = (Button) findViewById(R.id.second_btn);
16.  
    tv_name = (TextView) findViewById(R.id.tv_name);
17.  
     
18.  
    change_btn.setOnClickListener(new View.OnClickListener() {
19.  
    @Override
20.  
    public void onClick(View view) {
21.  
    animChangeColor(R.style.NightTheme);
22.  
    }
23.  
    });
24.  
    second_btn.setOnClickListener(new View.OnClickListener() {
25.  
    @Override
26.  
    public void onClick(View view) {
27.  
    animChangeColor(R.style.DayTheme);
28.  
    }
29.  
    });
30.  
     
31.  
    //Recyclerview
32.  
    // ViewGroupSetter rvSetter = new ViewGroupSetter(mNightRv, R.attr.root_view_bg);
33.  
    // rvSetter.childViewTextColor(R.id.category_desc, R.attr.one_text_bg);
34.  
    // rvSetter.childViewTextColor(R.id.category_author, R.attr.two_text_bg);
35.  
    // rvSetter.childViewTextColor(R.id.category_date, R.attr.two_text_bg);
36.  
    // rvSetter.childViewBgColor(R.id.night_rl, R.attr.cardview_bg);
37.  
     
38.  
    // 构建Colorful对象
39.  
    mColorful = new Colorful.Builder(this)
40.  
    .textColor(R.id.tv_name, R.attr.text_color) // 设置文本颜色
41.  
    // .setter(rvSetter)
42.  
    .create();
43.  
     
44.  
    }
45.  
     
46.  
    boolean isNight = false ;
47.  
     
48.  
    // 切换主题
49.  
    private void changeThemeWithColorful() {
50.  
    if (!isNight) {
51.  
    mColorful.setTheme(R.style.DayTheme);
52.  
    } else {
53.  
    mColorful.setTheme(R.style.NightTheme);
54.  
    }
55.  
    isNight = !isNight;
56.  
    }
57.  
     
58.  
    /**
59.  
    * 给夜间模式增加一个动画,颜色渐变
60.  
    *
61.  
    * @param newTheme
62.  
    */
63.  
    private void animChangeColor(final int newTheme) {
64.  
    final View rootView = getWindow().getDecorView();
65.  
    rootView.setDrawingCacheEnabled(true);
66.  
    rootView.buildDrawingCache(true);
67.  
     
68.  
    final Bitmap localBitmap = Bitmap.createBitmap(rootView.getDrawingCache());
69.  
    rootView.setDrawingCacheEnabled(false);
70.  
    if (null != localBitmap && rootView instanceof ViewGroup) {
71.  
    final View tmpView = new View(this);
72.  
    tmpView.setBackgroundDrawable(new BitmapDrawable(getResources(), localBitmap));
73.  
    ViewGroup.LayoutParams params = new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup
74.  
    .LayoutParams.MATCH_PARENT);
75.  
    ((ViewGroup) rootView).addView(tmpView, params);
76.  
    tmpView.animate().alpha(0).setDuration(400).setListener(new Animator.AnimatorListener() {
77.  
    @Override
78.  
    public void onAnimationStart(Animator animation) {
79.  
    mColorful.setTheme(newTheme);
80.  
    System.gc();
81.  
    }
82.  
     
83.  
    @Override
84.  
    public void onAnimationEnd(Animator animation) {
85.  
    ((ViewGroup) rootView).removeView(tmpView);
86.  
    localBitmap.recycle();
87.  
    }
88.  
     
89.  
    @Override
90.  
    public void onAnimationCancel(Animator animation) {
91.  
     
92.  
    }
93.  
     
94.  
    @Override
95.  
    public void onAnimationRepeat(Animator animation) {
96.  
     
97.  
    }
98.  
    }).start();
99.  
    }
100.  
     }
101.  
      
102.  
     private Disposable countdownDisposable;
103.  
      
104.  
     @Override
105.  
     protected void onDestroy() {
106.  
     super.onDestroy();
107.  
     countdownDisposable.dispose();
108.  
     }
109.  
     }

用到的工具  Colorful

1.  
   public class Colorful
2.  
   {
3.  
   /**
4.  
   * Colorful Builder
5.  
   */
6.  
   Builder mBuilder;
7.  
    
8.  
   /**
9.  
   * private constructor
10.  
    *
11.  
    * @param builder
12.  
    */
13.  
    private Colorful(Builder builder)
14.  
    {
15.  
    mBuilder = builder;
16.  
    }
17.  
     
18.  
    /**
19.  
    * 设置新的主题
20.  
    *
21.  
    * @param newTheme
22.  
    */
23.  
    public void setTheme(int newTheme)
24.  
    {
25.  
    mBuilder.setTheme(newTheme);
26.  
    }
27.  
     
28.  
    /**
29.  
    * 构建Colorful的Builder对象
30.  
    *
31.  
    * @author mrsimple
32.  
    */
33.  
    public static class Builder
34.  
    {
35.  
    /**
36.  
    * 存储了视图和属性资源id的关系表
37.  
    */
38.  
    List<ViewSetter> mElements = new ArrayList<>();
39.  
    /**
40.  
    * 目标Activity
41.  
    */
42.  
    Activity mActivity;
43.  
     
44.  
    /**
45.  
    * @param activity
46.  
    */
47.  
    public Builder(Activity activity)
48.  
    {
49.  
    mActivity = activity;
50.  
    }
51.  
     
52.  
    /**
53.  
    * @param fragment
54.  
    */
55.  
    public Builder(Fragment fragment)
56.  
    {
57.  
    mActivity = fragment.getActivity();
58.  
    }
59.  
     
60.  
    private View findViewById(int viewId)
61.  
    {
62.  
    return mActivity.findViewById(viewId);
63.  
    }
64.  
     
65.  
    /**
66.  
    * 将View id与存储该view背景色的属性进行绑定
67.  
    *
68.  
    * @param viewId 控件id
69.  
    * @param colorId 颜色属性id
70.  
    * @return
71.  
    */
72.  
    public Builder backgroundColor(int viewId, int colorId)
73.  
    {
74.  
    mElements.add(new ViewBackgroundColorSetter(findViewById(viewId), colorId));
75.  
    return this;
76.  
    }
77.  
     
78.  
    /**
79.  
    * 将View id与存储该view背景Drawable的属性进行绑定
80.  
    *
81.  
    * @param viewId 控件id
82.  
    * @param drawableId Drawable属性id
83.  
    * @return
84.  
    */
85.  
    public Builder backgroundDrawable(int viewId, int drawableId)
86.  
    {
87.  
    mElements.add(new ViewBackgroundDrawableSetter(
88.  
    findViewById(viewId), drawableId));
89.  
    return this;
90.  
    }
91.  
     
92.  
    /**
93.  
    * 将TextView id与存储该TextView文本颜色的属性进行绑定
94.  
    *
95.  
    * @param viewId TextView或者TextView子类控件的id
96.  
    * @param colorId 颜色属性id
97.  
    * @return
98.  
    */
99.  
    public Builder textColor(int viewId, int colorId)
100.  
     {
101.  
     TextView textView = (TextView) findViewById(viewId);
102.  
     mElements.add(new TextColorSetter(textView, colorId));
103.  
     return this;
104.  
     }
105.  
      
106.  
     /**
107.  
     * 用户手动构造并且添加Setter
108.  
     *
109.  
     * @param setter 用户自定义的Setter
110.  
     * @return
111.  
     */
112.  
     public Builder setter(ViewSetter setter)
113.  
     {
114.  
     mElements.add(setter);
115.  
     return this;
116.  
     }
117.  
      
118.  
     /**
119.  
     * 设置新的主题
120.  
     *
121.  
     * @param newTheme
122.  
     */
123.  
     protected void setTheme(int newTheme)
124.  
     {
125.  
     mActivity.setTheme(newTheme);
126.  
     makeChange(newTheme);
127.  
     }
128.  
      
129.  
     /**
130.  
     * 修改各个视图绑定的属性
131.  
     */
132.  
     private void makeChange(int themeId)
133.  
     {
134.  
     Theme curTheme = mActivity.getTheme();
135.  
     for (ViewSetter setter : mElements)
136.  
     {
137.  
     setter.setValue(curTheme, themeId);
138.  
     }
139.  
     }
140.  
      
141.  
     /**
142.  
     * 创建Colorful对象
143.  
     *
144.  
     * @return
145.  
     */
146.  
     public Colorful create()
147.  
     {
148.  
     return new Colorful(this);
149.  
     }
150.  
     }
151.  
     }

RecyclerViewSetter 

1.  
   public class RecyclerViewSetter extends ViewGroupSetter
2.  
   {
3.  
    
4.  
   public RecyclerViewSetter(ViewGroup targetView, int resId)
5.  
   {
6.  
   super(targetView, resId);
7.  
   }
8.  
    
9.  
   public RecyclerViewSetter(ViewGroup targetView)
10.  
    {
11.  
    super(targetView);
12.  
    }
13.  
     
14.  
    @Override
15.  
    protected void clearRecyclerViewRecyclerBin(View rootView)
16.  
    {
17.  
    super.clearRecyclerViewRecyclerBin(rootView);
18.  
    ((RecyclerView) rootView).getRecycledViewPool().clear();
19.  
    }
20.  
     
21.  
    }

TextColorSetter

1.  
   public class TextColorSetter extends ViewSetter
2.  
   {
3.  
   public TextColorSetter(TextView textView, int resId)
4.  
   {
5.  
   super(textView, resId);
6.  
   }
7.  
    
8.  
   public TextColorSetter(int viewId, int resId)
9.  
   {
10.  
    super(viewId, resId);
11.  
    }
12.  
     
13.  
    @Override
14.  
    public void setValue(Theme newTheme, int themeId)
15.  
    {
16.  
    if (mView == null)
17.  
    {
18.  
    return;
19.  
    }
20.  
    Log.e("color123", "setValue(TextColorSetter.java:29)");
21.  
    ((TextView) mView).setTextColor(getColor(newTheme));
22.  
    }
23.  
    }

ViewBackgroundColorSetter 

1.  
   public class ViewBackgroundColorSetter extends ViewSetter
2.  
   {
3.  
   public ViewBackgroundColorSetter(View target, int resId)
4.  
   {
5.  
   super(target, resId);
6.  
   }
7.  
    
8.  
   public ViewBackgroundColorSetter(int viewId, int resId)
9.  
   {
10.  
    super(viewId, resId);
11.  
    }
12.  
     
13.  
    @Override
14.  
    public void setValue(Theme newTheme, int themeId)
15.  
    {
16.  
    if (mView != null)
17.  
    {
18.  
    Log.e("color123","setValue(ViewBackgroundColorSetter.java:29)");
19.  
    mView.setBackgroundColor(getColor(newTheme));
20.  
    }
21.  
    }
22.  
    }

ViewBackgroundDrawableSetter

1.  
   public class ViewBackgroundDrawableSetter extends ViewSetter
2.  
   {
3.  
   public ViewBackgroundDrawableSetter(View targetView, int resId)
4.  
   {
5.  
   super(targetView, resId);
6.  
   }
7.  
    
8.  
    
9.  
   public ViewBackgroundDrawableSetter(int viewId, int resId)
10.  
    {
11.  
    super(viewId, resId);
12.  
    }
13.  
     
14.  
    @SuppressWarnings("deprecation")
15.  
    @Override
16.  
    public void setValue(Theme newTheme, int themeId)
17.  
    {
18.  
    if (mView == null)
19.  
    {
20.  
    return;
21.  
    }
22.  
    TypedArray a = newTheme.obtainStyledAttributes(themeId,
23.  
    new int[]{mAttrResId});
24.  
    int attributeResourceId = a.getResourceId(0, 0);
25.  
    Drawable drawable = mView.getResources().getDrawable(
26.  
    attributeResourceId);
27.  
    a.recycle();
28.  
    mView.setBackgroundDrawable(drawable);
29.  
    }
30.  
    }

ViewGroupSetter 

1.  
   public class ViewGroupSetter extends ViewSetter
2.  
   {
3.  
   /**
4.  
   * ListView的子试图的Setter
5.  
   */
6.  
   protected Set<ViewSetter> mItemViewSetters = new HashSet<ViewSetter>();
7.  
    
8.  
   /**
9.  
   * @param targetView
10.  
    * @param resId
11.  
    */
12.  
    public ViewGroupSetter(ViewGroup targetView, int resId)
13.  
    {
14.  
    super(targetView, resId);
15.  
    }
16.  
     
17.  
    public ViewGroupSetter(ViewGroup targetView)
18.  
    {
19.  
    super(targetView, 0);
20.  
    }
21.  
     
22.  
    /**
23.  
    * 设置View的背景色
24.  
    *
25.  
    * @param viewId
26.  
    * @param colorId
27.  
    * @return
28.  
    */
29.  
    public ViewGroupSetter childViewBgColor(int viewId, int colorId)
30.  
    {
31.  
    mItemViewSetters.add(new ViewBackgroundColorSetter(viewId, colorId));
32.  
    return this;
33.  
    }
34.  
     
35.  
    /**
36.  
    * 设置View的drawable背景
37.  
    *
38.  
    * @param viewId
39.  
    * @param drawableId
40.  
    * @return
41.  
    */
42.  
    public ViewGroupSetter childViewBgDrawable(int viewId, int drawableId)
43.  
    {
44.  
    mItemViewSetters.add(new ViewBackgroundDrawableSetter(viewId,
45.  
    drawableId));
46.  
    return this;
47.  
    }
48.  
     
49.  
    /**
50.  
    * 设置文本颜色,因此View的类型必须为TextView或者其子类
51.  
    *
52.  
    * @param viewId
53.  
    * @param colorId
54.  
    * @return
55.  
    */
56.  
    public ViewGroupSetter childViewTextColor(int viewId, int colorId)
57.  
    {
58.  
    mItemViewSetters.add(new TextColorSetter(viewId, colorId));
59.  
    return this;
60.  
    }
61.  
     
62.  
    @Override
63.  
    public void setValue(Theme newTheme, int themeId)
64.  
    {
65.  
    mView.setBackgroundColor(getColor(newTheme));
66.  
    // 清空AbsListView的元素
67.  
    clearListViewRecyclerBin(mView);
68.  
    // 清空RecyclerView
69.  
    clearRecyclerViewRecyclerBin(mView);
70.  
    // 修改所有子元素的相关属性
71.  
    changeChildenAttrs((ViewGroup) mView, newTheme, themeId);
72.  
    }
73.  
     
74.  
    /**
75.  
    * @param viewId
76.  
    * @return
77.  
    */
78.  
    private View findViewById(View rootView, int viewId)
79.  
    {
80.  
    View targetView = rootView.findViewById(viewId);
81.  
    return targetView;
82.  
    }
83.  
     
84.  
    /**
85.  
    * 修改子视图的对应属性
86.  
    *
87.  
    * @param viewGroup
88.  
    * @param newTheme
89.  
    * @param themeId
90.  
    */
91.  
    private void changeChildenAttrs(ViewGroup viewGroup, Theme newTheme, int themeId)
92.  
    {
93.  
    int childCount = viewGroup.getChildCount();
94.  
    //递归用法
95.  
    for (int i = 0; i < childCount; i )
96.  
    {
97.  
    View childView = viewGroup.getChildAt(i);
98.  
    // 深度遍历
99.  
    if (childView instanceof ViewGroup)
100.  
     {
101.  
     changeChildenAttrs((ViewGroup) childView, newTheme, themeId);
102.  
     }
103.  
      
104.  
     // 遍历子元素与要修改的属性,如果相同那么则修改子View的属性
105.  
     for (ViewSetter setter : mItemViewSetters)
106.  
     {
107.  
     // 每次都要从ViewGroup中查找数据
108.  
     setter.mView = findViewById(viewGroup, setter.mViewId);
109.  
      
110.  
     //因为viewgroup中的所有的id都添加进来了,而且每一个id都是独一无二的，
111.  
     // 所以会有一个判断，当childView的id和setter中的id相等时，才会修改属性
112.  
     if (childView.getId() == setter.getViewId())
113.  
     {
114.  
     setter.setValue(newTheme, themeId);
115.  
     }
116.  
     }
117.  
     }
118.  
     }
119.  
      
120.  
     private void clearListViewRecyclerBin(View rootView)
121.  
     {
122.  
     if (rootView instanceof AbsListView)
123.  
     {
124.  
     try
125.  
     {
126.  
     @SuppressLint("SoonBlockedPrivateApi")
127.  
     Field localField = AbsListView.class.getDeclaredField("mRecycler");
128.  
     localField.setAccessible(true);
129.  
     Method localMethod = Class.forName(
130.  
     "android.widget.AbsListView$RecycleBin")
131.  
     .getDeclaredMethod("clear", new Class[0]);
132.  
     localMethod.setAccessible(true);
133.  
     localMethod.invoke(localField.get(rootView), new Object[0]);
134.  
     Log.e("", "### 清空AbsListView的RecycerBin ");
135.  
     } catch (NoSuchFieldException e1)
136.  
     {
137.  
     e1.printStackTrace();
138.  
     } catch (ClassNotFoundException e2)
139.  
     {
140.  
     e2.printStackTrace();
141.  
     } catch (NoSuchMethodException e3)
142.  
     {
143.  
     e3.printStackTrace();
144.  
     } catch (IllegalAccessException e4)
145.  
     {
146.  
     e4.printStackTrace();
147.  
     } catch (InvocationTargetException e5)
148.  
     {
149.  
     e5.printStackTrace();
150.  
     }
151.  
     }
152.  
     }
153.  
      
154.  
     protected void clearRecyclerViewRecyclerBin(View rootView)
155.  
     {
156.  
     if (rootView instanceof RecyclerView)
157.  
     {
158.  
     try
159.  
     {
160.  
     Field localField = RecyclerView.class
161.  
     .getDeclaredField("mRecycler");
162.  
     localField.setAccessible(true);
163.  
     Method localMethod = Class.forName(
164.  
     "android.support.v7.widget.RecyclerView$Recycler")
165.  
     .getDeclaredMethod("clear", new Class[0]);
166.  
     localMethod.setAccessible(true);
167.  
     localMethod.invoke(localField.get(rootView), new Object[0]);
168.  
     Log.e("", "### 清空RecyclerView的Recycer ");
169.  
     rootView.invalidate();
170.  
     ((RecyclerView) rootView).getRecycledViewPool().clear();
171.  
     } catch (NoSuchFieldException e1)
172.  
     {
173.  
     e1.printStackTrace();
174.  
     } catch (ClassNotFoundException e2)
175.  
     {
176.  
     e2.printStackTrace();
177.  
     } catch (NoSuchMethodException e3)
178.  
     {
179.  
     e3.printStackTrace();
180.  
     } catch (IllegalAccessException e4)
181.  
     {
182.  
     e4.printStackTrace();
183.  
     } catch (InvocationTargetException e5)
184.  
     {
185.  
     e5.printStackTrace();
186.  
     }
187.  
     }
188.  
     }
189.  
     }

ViewSetter

1.  
   public abstract class ViewSetter
2.  
   {
3.  
   /**
4.  
   * 目标View
5.  
   */
6.  
   protected View mView;
7.  
   /**
8.  
   * 目标view id,有时在初始化时还未构建该视图,比如ListView的Item View中的某个控件
9.  
   */
10.  
    protected int mViewId;
11.  
    /**
12.  
    * 目标View要的特定属性id
13.  
    */
14.  
    protected int mAttrResId;
15.  
     
16.  
    public ViewSetter(View targetView, int resId)
17.  
    {
18.  
    mView = targetView;
19.  
    mAttrResId = resId;
20.  
    }
21.  
     
22.  
    public ViewSetter(int viewId, int resId)
23.  
    {
24.  
    mViewId = viewId;
25.  
    mAttrResId = resId;
26.  
    }
27.  
     
28.  
    /**
29.  
    * @param newTheme
30.  
    * @param themeId
31.  
    */
32.  
    public abstract void setValue(Theme newTheme, int themeId);
33.  
     
34.  
    /**
35.  
    * 获取视图的Id
36.  
    *
37.  
    * @return
38.  
    */
39.  
    protected int getViewId()
40.  
    {
41.  
    return mView != null ? mView.getId() : -1;
42.  
    }
43.  
     
44.  
    protected boolean isViewNotFound()
45.  
    {
46.  
    return mView == null;
47.  
    }
48.  
     
49.  
    /**
50.  
    * @param newTheme
51.  
    * @return
52.  
    */
53.  
    protected int getColor(Theme newTheme)
54.  
    {
55.  
    //返回重新指定后的资源id
56.  
    TypedValue typedValue = new TypedValue();
57.  
    newTheme.resolveAttribute(mAttrResId, typedValue, true);
58.  
    return typedValue.data;
59.  
    }
60.  
    }

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