本篇内容介绍了“怎么用Data Ability读取系统设置项”的有关知识,在实际案例的操作过程中,不少人都会遇到这样的困境,接下来就让小编带领大家学习一下如何处理这些情况吧!希望大家仔细阅读,能够学有所成!
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; } } }
使用方法:
在MyApplication onInitialize调用ContextUtil.setHapGlobalContext(this)设置全局Context;
调用SystemSettingUtil.getXXX。
注:key常量可使用hdc shell执行以下命令获取。
settings list system
settings list secure
settings list global
代码里怎么区分用户是否调整了系统字体大小设置里【显示大小】?
https://developer.huawei.com/consumer/cn/forum/topic/0202539565144520016?fid=23
(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。
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