关于android:使用Data-Ability读取系统设置项

SystemSettingUtil 工具类

public class SystemSettingUtil {

    private static final int LOG_DOMAIN = 218107648;
    private static final String TAG = "SystemSettingUtil";
    private static final HiLogLabel LOG_LABEL = new HiLogLabel(0, LOG_DOMAIN, TAG);
    private static final String LOG_FORMAT = "%{public}s";

    private static final String GET_GLOBAL = "GET_global";
    private static final String GET_SECURE = "GET_secure";
    private static final String GET_SYSTEM = "GET_system";
    private static final String SETTING_VALUE = "value";
    private static final String SYSTEM_SETTING = "dataability:///settings";

    public static String getGlobal(String key) {return getSettingValueAsString(key, GET_GLOBAL);
    }

    public static String getSecure(String key) {return getSettingValueAsString(key, GET_SECURE);
    }

    public static String getSystem(String key) {return getSettingValueAsString(key, GET_SYSTEM);
    }

    public static String getSettingValueAsString(String key, String method) {if (TextTool.isNullOrEmpty(key)) {HiLog.warn(LOG_LABEL, LOG_FORMAT, "getSettingValueAsString -> key is null or empty");
            return "";
        } else if (TextTool.isNullOrEmpty(method)) {HiLog.warn(LOG_LABEL, LOG_FORMAT, "getSettingValueAsString -> method is null or empty");
            return "";
        } else {
            try {return DataAbilityHelper.creator(ContextUtil.getHapGlobalContext()).call(Uri.parse(SYSTEM_SETTING),
                        method, key, null).getString(SETTING_VALUE, "");
            } catch (IllegalArgumentException | IllegalStateException | DataAbilityRemoteException e) {HiLog.error(LOG_LABEL, LOG_FORMAT, "getSettingValueAsString -> Exception");
                return "";
            }
        }
    }
}

ContextUtil 工具类

public class ContextUtil {
 
    private static Context sHapGlobalContext;
 
    public static Context getHapGlobalContext() {return sHapGlobalContext;}
 
    public static void setHapGlobalContext(Context context) {if (context != null) {sHapGlobalContext = context;}
    }
}

应用办法：

在 MyApplication onInitialize 调用 ContextUtil.setHapGlobalContext(this) 设置全局 Context；

调用 SystemSettingUtil.getXXX。

注：key 常量可应用 hdc shell 执行以下命令获取。

settings list system

settings list secure

settings list global

代码里怎么辨别用户是否调整了零碎字体大小设置里【显示大小】？

https://developer.huawei.com/…

(出处: 论坛首页)

解决方案：

private static final String INIT_DPI = "init_dpi";
private static final String DISPLAY_DENSITY_FORCED = "display_density_forced";
SystemSettingUtil.getSecure(INIT_DPI);
SystemSettingUtil.getSecure(DISPLAY_DENSITY_FORCED);

display_density_forced 为空即显示大小为默认，display_density_forced<init_dpi 显示大小为小，display_density_forced>init_dpi 显示大小为大，未修改过显示大小时两项都为空。

原文链接：https://developer.huawei.com/…
原作者：π