Android系统Settings一级菜单动态显示控制方案

1. 核心实现逻辑优化

1.1 动态XML加载机制改进

// TopLevelSettings.java
@Override
protected int getPreferenceScreenResId() {
    return Settings.Secure.getInt(getContext().getContentResolver(), 
            "settings_menu_profile", 0) == 0 
            ? R.xml.top_level_settings 
            : R.xml.top_level_settings_custom;
}

1.2 属性监听刷新机制

// 在SettingsHomepageActivity中增加属性监听
private ContentObserver mSettingsObserver = new ContentObserver(new Handler()) {
    @Override
    public void onChange(boolean selfChange) {
        reloadHomepage();
    }
};

@Override
protected void onStart() {
    super.onStart();
    getContentResolver().registerContentObserver(
        Settings.Secure.getUriFor("settings_menu_profile"),
        false, mSettingsObserver);
}

private void reloadHomepage() {
    getSupportFragmentManager().beginTransaction()
        .replace(R.id.main_content, new TopLevelSettings())
        .commit();
}

2. 进阶控制方案（推荐）

2.1 基于控制器的动态管理

// 自定义控制器基类
public abstract class DynamicPreferenceController extends BasePreferenceController {
    private static final String TAG = "DynamicPrefCtrl";
    
    public DynamicPreferenceController(Context context, String key) {
        super(context, key);
    }

    @Override
    public int getAvailabilityStatus() {
        return isFeatureEnabled() ? AVAILABLE : DISABLED;
    }

    protected abstract boolean isFeatureEnabled();
}

// 示例：网络设置控制器
public class NetworkPreferenceController extends DynamicPreferenceController {
    public NetworkPreferenceController(Context context) {
        super(context, "top_level_network");
    }

    @Override
    protected boolean isFeatureEnabled() {
        return Settings.Secure.getInt(mContext.getContentResolver(),
            "enable_network_settings", 1) == 1;
    }
}

2.2 XML配置优化

<!-- 原始top_level_settings.xml保持完整结构 -->
<Preference
    android:key="top_level_network"
    android:title="@string/network_dashboard_title"
    settings:controller="com.android.settings.network.NetworkPreferenceController"/>

3. 系统属性管理建议

3.1 属性命名规范

// 建议使用命名空间前缀
public static final String KEY_FEATURE_NETWORK = "sysui.settings.network_enabled";

3.2 安全写入接口

public class SettingsConfigManager {
    private static final Uri CONFIG_URI = Settings.Secure.CONTENT_URI;
    
    public static void enableFeature(Context context, String key) {
        Settings.Secure.putInt(context.getContentResolver(), key, 1);
    }

    public static void disableFeature(Context context, String key) {
        Settings.Secure.putInt(context.getContentResolver(), key, 0);
    }
}

4. 可视化配置工具（可选）

4.1 ADB控制命令

# 启用网络设置
adb shell settings put secure sysui.settings.network_enabled 1

# 禁用显示设置  
adb shell settings put secure sysui.settings.display_enabled 0

4.2 开发者选项界面

// 在开发者选项中添加控制开关
public class FeatureSwitchPreference extends SwitchPreference {
    public FeatureSwitchPreference(Context context, AttributeSet attrs) {
        super(context, attrs);
        setChecked(Settings.Secure.getInt(context.getContentResolver(),
            getKey(), 1) == 1);
    }

    @Override
    protected boolean persistBoolean(boolean value) {
        Settings.Secure.putInt(getContext().getContentResolver(),
            getKey(), value ? 1 : 0);
        return true;
    }
}

5. 兼容性保障措施

5.1 版本回退机制

// 在BasePreferenceController中添加版本检测
@Override
public int getAvailabilityStatus() {
    if (Build.VERSION.SDK_INT < Build.VERSION_CODES.R) {
        return UNSUPPORTED_ON_DEVICE;
    }
    return super.getAvailabilityStatus();
}

5.2 多语言资源管理

# 在翻译资源文件中标记需动态控制的字符串
<string name="network_dashboard_title" translatable="true" 
    description="[DYNAMIC_FEATURE]">Network & internet</string>

6. 验证与调试方案

6.1 自动化测试用例

@RunWith(AndroidJUnit4.class)
public class SettingsMenuTest {
    @Rule
    public final SettingsActivityTestRule<TopLevelSettings> rule =
            new SettingsActivityTestRule<>(TopLevelSettings.class);

    @Test
    public void testNetworkMenuVisibility() {
        // 启用功能
        SettingsConfigManager.enableFeature(InstrumentationRegistry.getTargetContext(),
            "sysui.settings.network_enabled");
        
        onView(withText(R.string.network_dashboard_title))
            .check(matches(isDisplayed()));

        // 禁用功能
        SettingsConfigManager.disableFeature(...);
        
        onView(withText(R.string.network_dashboard_title))
            .check(doesNotExist());
    }
}

6.2 实时调试监控

bash
# 监控属性变化日志
adb logcat -s SettingsProvider:D FeatureManager:D

# 检查当前生效配置
adb shell settings get secure sysui.settings.network_enabled