Android原生设置黑白主题

package com.kika.IME.controller;

import android.app.UiModeManager;
import android.content.Context;
import android.util.Log;

public class ThemeController {
    private static final String TAG = "ThemeController";
    private UiModeManager mUiModeManager;
    private Context mContext;
    
    private ThemeController() {
    }

    private static class ThemeControllerHolder {
        private static final ThemeController INSTANCE = new ThemeController();
    }

    public static ThemeController getInstance() {
        return ThemeControllerHolder.INSTANCE;
    }

    public void init(Context context) {
        Log.d(TAG, "init: ");
        mContext = context;
        mUiModeManager = (UiModeManager) context.getSystemService(Context.UI_MODE_SERVICE);
    }
    
    /**
     * 设置是否为夜间模式
     *
     * @param isNightMode true: 夜间模式
     */
    public void setNightMode(boolean isNightMode) {
        if (isNightModeActive(mContext) == isNightMode) {
            Log.i(TAG, "setNightMode: same value, return");
            return;
        }
        Log.d(TAG, "setNightMode() called with: isNightMode = [" + isNightMode + "]");
        if (mUiModeManager != null) {
            mUiModeManager.setNightMode(isNightMode ? UiModeManager.MODE_NIGHT_YES : UiModeManager.MODE_NIGHT_NO);
        } else {
            Log.e(TAG, "setNightMode UiModeManager is null. Cannot set night mode.");
        }
    }

    /**
     * 获取是否为夜间模式
     *
     * @param context 上下文
     * @return true: 夜间模式
     */
    public boolean isNightModeActive(Context context) {
        mUiModeManager = (UiModeManager) mContext.getSystemService(Context.UI_MODE_SERVICE);
        if (mUiModeManager != null) {
            int mode = mUiModeManager.getNightMode();
            return mode == UiModeManager.MODE_NIGHT_YES;
        }
        return false;
    }
    

}