添加简单的日夜间模式 View 颜色切换辅助方法

app/src/main/java/com/gh/base/BaseActivity.java

@@ -16,6 +16,7 @@ import android.text.TextUtils;
 import android.util.TypedValue;
 import android.view.Gravity;
 import android.view.View;
+import android.view.ViewGroup;
 import android.view.Window;
 import android.view.WindowManager;
 import android.widget.LinearLayout;
@@ -24,6 +25,7 @@ import android.widget.TextView;
 
 import androidx.annotation.NonNull;
 import androidx.core.content.ContextCompat;
+import androidx.core.view.LayoutInflaterCompat;
 import androidx.fragment.app.Fragment;
 import androidx.lifecycle.Lifecycle;
 
@@ -70,7 +72,7 @@ import kotlin.Pair;
 import pub.devrel.easypermissions.EasyPermissions;
 
 /**
- * 只提供基础的服务(EventBus/ButterKnife/Share/GlobalDialog/Permissions)
+ * 只提供基础的服务(EventBus/Share/GlobalDialog/Permissions)
  * <p>
  * 需要工具栏的页面请继承{@link ToolBarActivity}
  */
@@ -130,6 +132,11 @@ public abstract class BaseActivity extends BaseAppCompatActivity implements Easy
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
+        // TODO 添加 nightMode 较高性能的开关来避免无用调用
+        if (isAutoResetViewBackgroundEnabled()) {
+            LayoutInflaterCompat.setFactory2(getLayoutInflater(), new CustomLayoutInflaterFactory(this));
+        }
+
         super.onCreate(savedInstanceState);
 
         if (useEventBus()) EventBus.getDefault().register(this);
@@ -530,5 +537,51 @@ public abstract class BaseActivity extends BaseAppCompatActivity implements Easy
             tv.setText(NightModeUtils.INSTANCE.isNightMode(this) ? "夜间模式" : "日间模式");
             tv.setAlpha(NightModeUtils.INSTANCE.isNightMode(this) ? 0.8F : 0.15F);
         }
+        if (isAutoResetViewBackgroundEnabled()) {
+            updateStaticViewBackground(getWindow().getDecorView());
+        }
     }
+
+    protected boolean isAutoResetViewBackgroundEnabled() {
+        return false;
+    }
+
+    /**
+     * 自动重置部分 view 的背景颜色/资源
+     * @param view 父 view
+     */
+    private void updateStaticViewBackground(View view) {
+        if (view instanceof ViewGroup) {
+            for (int i = 0; i < ((ViewGroup) view).getChildCount(); i++) {
+                View child = ((ViewGroup) view).getChildAt(i);
+                updateStaticViewBackground(child);
+            }
+        }
+
+        String backgroundString = (String) view.getTag(CustomLayoutInflaterFactory.TAG_BACKGROUND_ID);
+        String textColorString = (String) view.getTag(CustomLayoutInflaterFactory.TAG_TEXT_COLOR_ID);
+        if (backgroundString != null) {
+            int backgroundId = Integer.parseInt(backgroundString.replace("@", ""));
+
+            if (backgroundId != 0) {
+                TypedValue value = new TypedValue();
+                getResources().getValue(backgroundId, value, true);
+
+                if (value.type >= TypedValue.TYPE_FIRST_COLOR_INT && value.type <= TypedValue.TYPE_LAST_COLOR_INT) {
+                    view.setBackgroundColor(ExtensionsKt.toColor(backgroundId, this));
+                } else {
+                    view.setBackground(ExtensionsKt.toDrawable(backgroundId, this));
+                }
+            }
+        }
+
+        if (textColorString != null && view instanceof TextView) {
+            int textColorId = Integer.parseInt(textColorString.replace("@", ""));
+
+            if (textColorId != 0) {
+                ((TextView) view).setTextColor(ExtensionsKt.toColor(textColorId, this));
+            }
+        }
+    }
+
 }

app/src/main/java/com/gh/base/CustomLayoutInflaterFactory.kt

@@ -0,0 +1,48 @@
+package com.gh.base
+
+import android.content.Context
+import android.util.AttributeSet
+import android.view.LayoutInflater
+import android.view.View
+import androidx.appcompat.app.AppCompatActivity
+import com.gh.gamecenter.R
+
+class CustomLayoutInflaterFactory(
+    private val mAppCompatActivity: AppCompatActivity
+) : LayoutInflater.Factory2 {
+
+    override fun onCreateView(
+        parent: View?,
+        name: String,
+        context: Context,
+        attrs: AttributeSet
+    ): View? {
+
+        val view = mAppCompatActivity.delegate.createView(parent, name, context, attrs)
+            ?: mAppCompatActivity.onCreateView(parent, name, context, attrs)
+            ?: mAppCompatActivity.layoutInflater.createView(name,null, attrs)
+
+        val n = attrs.attributeCount
+        for (i in 0 until n) {
+            val attributeName = attrs.getAttributeName(i).toString()
+            if (attributeName.contains("background")) {
+                view?.setTag(TAG_BACKGROUND_ID, attrs.getAttributeValue(i))
+            } else if (attributeName.contains("textColor")) {
+                view?.setTag(TAG_TEXT_COLOR_ID, attrs.getAttributeValue(i))
+            }
+        }
+
+        return view
+    }
+
+    override fun onCreateView(name: String, context: Context, attrs: AttributeSet): View? {
+        return mAppCompatActivity.onCreateView(name, context, attrs)
+    }
+
+    companion object {
+        const val TAG = "CustomLayoutInflaterFactory"
+        const val TAG_BACKGROUND_ID = R.string.background_id
+        const val TAG_TEXT_COLOR_ID = R.string.text_color_id
+    }
+
+}