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Java7源码翻译:Android开源项目及个性化控件详解

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此项目不仅限于翻译,还包括对Android开源项目的分类汇总,涉及了多个有趣的、完整的项目。在这个汇总中,我们可以找到一些个性化的Android控件(View)的介绍,比如ListView、ActionBar、Menu、ViewPager、Gallery、GridView、ImageView、ProgressBar、TextView、ScrollView、TimeView、TipView、FlipView、ColorPickView、GraphView、UI Style等。其中,ListView的描述详细提到了android-pulltorefresh,这是一个强大的拉动刷新功能的开源项目,它支持多种控件的下拉刷新功能,包括但不限于ListView、ViewPager、WebView、ExpandableListView、GridView、ScrollView、Horizontal等。这个项目涉及到了一些知名的Android开发人员,例如Jake Wharton、Chris Banes和Koushik Dutta等。" Java 7源码翻译项目展示了开放性项目的力量,即通过开源社区的合作,可以实现对技术文档和源代码的翻译与汇总,进而推动技术的普及和提高开发者的技能。这种开放性项目对于技术学习者来说具有重要价值,因为它们可以直观地了解到源代码的实现细节,并通过阅读源代码来深入理解语言特性。 Android作为一个广泛使用的移动操作系统,其开源项目汇集了全球开发者的智慧,这些项目不仅涉及Android基础架构,还深入到具体的UI控件实现。通过研究这些开源项目,开发者可以学习到如何构建高质量、性能优异的应用程序,同时也能够了解到当前Android开发的趋势和最佳实践。 具体到个性化的Android控件,项目中提到的ListView的android-pulltorefresh是一个非常实用的组件,它解决了移动应用中常见的需要刷新数据的场景。通过下拉刷新机制,用户可以通过一个简单的手势来触发数据的更新,这种方式不仅符合人的直觉操作习惯,还能提升用户的交互体验。这种控件的实现涉及到Android的事件处理机制、视图绘制以及用户交互等多个方面,是学习Android UI开发的一个很好的案例。 此外,项目中还提到了一些Android UI的高级控件和风格,比如ActionBar、Menu、ViewPager等,这些都是构建现代Android应用所必需的元素。ActionBar可以用于展示应用的导航和操作菜单;Menu提供了一个标准的方式来向用户显示可选项;ViewPager则是一个流行的左右滑动切换视图的控件,常用于实现如引导页、图片浏览等功能。这些控件的学习可以帮助开发者在构建应用时提供更加丰富的用户界面和更加流畅的用户体验。 最后,本项目的标签为“系统开源”,说明这是一个面向系统的开源项目,目标是为广大开发者提供一个可以自由学习和使用的平台。通过参与这样的项目,开发者不仅能提升自己的技术水平,也能为开源社区做出贡献。开放项目(open-project)的概念鼓励开发者共享知识、代码和技术,促进了整个技术社区的进步。

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Settings1970-01-01 00:00:11.176 881 881 W SettingsState: No settings state /data/system/users/0/settings_system.xml 1970-01-01 00:00:11.176 881 881 I SettingsState: directory info for directory/file /data/system/users/0/settings_system.xml with stacktrace 1970-01-01 00:00:11.176 881 881 I SettingsState: java.lang.Exception 1970-01-01 00:00:11.176 881 881 I SettingsState: at com.android.providers.settings.SettingsState.logSettingsDirectoryInformation(SettingsState.java:892) 1970-01-01 00:00:11.176 881 881 I SettingsState: at com.android.providers.settings.SettingsState.readStateSyncLocked(SettingsState.java:1011) 1970-01-01 00:00:11.176 881 881 I SettingsState: at com.android.providers.settings.SettingsState.<init>(SettingsState.java:292) 1970-01-01 00:00:11.176 881 881 I SettingsState: at com.android.providers.settings.SettingsProvider$SettingsRegistry.ensureSettingsStateLocked(SettingsProvider.java:2794) 1970-01-01 00:00:11.176 881 881 I SettingsState: at com.android.providers.settings.SettingsProvider$SettingsRegistry.migrateLegacySettingsForUserLocked(SettingsProvider.java:3163) 1970-01-01 00:00:11.176 881 881 I SettingsState: at com.android.providers.settings.SettingsProvider$SettingsRegistry.migrateAllLegacySettingsIfNeeded(SettingsProvider.java:3128) 1970-01-01 00:00:11.176 881 881 I SettingsState: at com.android.providers.settings.SettingsProvider$SettingsRegistry.<init>(SettingsProvider.java:2598) 1970-01-01 00:00:11.176 881 881 I SettingsState: at com.android.providers.settings.SettingsProvider.onCreate(SettingsProvider.java:347) 1970-01-01 00:00:11.176 881 881 I SettingsState: at android.content.ContentProvider.attachInfo(ContentProvider.java:2388) 1970-01-01 00:00:11.176 881 881 I SettingsState: at android.content.ContentProvider.attachInfo(ContentProvider.java:2358) 1970-01-01 00:00:11.176 881 881 I SettingsState: at android.app.ActivityThread.installProvider(ActivityThread.java:7245) 1970-01-01 00:00:11.176 881 881 I SettingsState: at android.app.ActivityThread.installContentProviders(ActivityThread.java:6786) 1970-01-01 00:00:11.176 881 881 I SettingsState: at android.app.ActivityThread.installSystemProviders(ActivityThread.java:7438) 1970-01-01 00:00:11.176 881 881 I SettingsState: at com.android.server.am.ActivityManagerService.installSystemProviders(ActivityManagerService.java:7971) 1970-01-01 00:00:11.176 881 881 I SettingsState: at com.android.server.SystemServer.startOtherServices(SystemServer.java:1131) 1970-01-01 00:00:11.176 881 881 I SettingsState: at com.android.server.SystemServer.run(SystemServer.java:607) 1970-01-01 00:00:11.176 881 881 I SettingsState: at com.android.server.SystemServer.main(SystemServer.java:423) 1970-01-01 00:00:11.176 881 881 I SettingsState: at java.lang.reflect.Method.invoke(Native Method) 1970-01-01 00:00:11.176 881 881 I SettingsState: at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:600) 1970-01-01 00:00:11.176 881 881 I SettingsState: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:925) 1970-01-01 00:00:11.177 881 881 I SettingsState: ancestor directory /data/system/users/0 exists 1970-01-01 00:00:11.177 881 881 I SettingsState: ancestor directory /data/system/users/0 permissions: r: true w: true x: true 1970-01-01 00:00:11.177 881 881 I SettingsState: ancestor's parent directory /data/system/users permissions: r: true w: true x: true 1970-01-01 00:00:11.177 881 881 D SQLiteQueryBuilder: SELECT _id, name, value FROM system with args null 1970-01-01 00:00:11.177 881 881 D SQLiteCursor: received count(*) from native_fill_window: 24 1970-01-01 00:00:11.181 881 881 W SettingsState: No settings state /data/system/users/0/settings_secure.xml 1970-01-01 00:00:11.181 881 881 I SettingsState: directory info for directory/file /data/system/users/0/settings_secure.xml with stacktrace 1970-01-01 00:00:11.181 881 881 I SettingsState: java.lang.Exception 1970-01-01 00:00:11.181 881 881 I SettingsState: at com.android.providers.settings.SettingsState.logSettingsDirectoryInformation(SettingsState.java:892) 1970-01-01 00:00:11.181 881 881 I SettingsState: at com.android.providers.settings.SettingsState.readStateSyncLocked(SettingsState.java:1011) 1970-01-01 00:00:11.181 881 881 I SettingsState: at com.android.providers.settings.SettingsState.<init>(SettingsState.java:292) 1970-01-01 00:00:11.181 881 881 I SettingsState: at com.android.providers.settings.SettingsProvider$SettingsRegistry.ensureSettingsStateLocked(SettingsProvider.java:2794) 1970-01-01 00:00:11.181 881 881 I SettingsState: at com.android.providers.settings.SettingsProvider$SettingsRegistry.migrateLegacySettingsForUserLocked(SettingsProvider.java:3172) 1970-01-01 00:00:11.181 881 881 I SettingsState: at com.android.providers.settings.SettingsProvider$SettingsRegistry.migrateAllLegacySettingsIfNeeded(SettingsProvider.java:3128) 1970-01-01 00:00:11.181 881 881 I SettingsState: at com.android.providers.settings.SettingsProvider$SettingsRegistry.<init>(SettingsProvider.java:2598) 1970-01-01 00:00:11.181 881 881 I SettingsState: at com.android.providers.settings.SettingsProvider.onCreate(SettingsProvider.java:347) 1970-01-01 00:00:11.181 881 881 I SettingsState: at android.content.ContentProvider.attachInfo(ContentProvider.java:2388) 1970-01-01 00:00:11.181 881 881 I SettingsState: at android.content.ContentProvider.attachInfo(ContentProvider.java:2358) 1970-01-01 00:00:11.181 881 881 I SettingsState: at android.app.ActivityThread.installProvider(ActivityThread.java:7245) 1970-01-01 00:00:11.181 881 881 I SettingsState: at android.app.ActivityThread.installContentProviders(ActivityThread.java:6786) 1970-01-01 00:00:11.181 881 881 I SettingsState: at android.app.ActivityThread.installSystemProviders(ActivityThread.java:7438) 1970-01-01 00:00:11.181 881 881 I SettingsState: at com.android.server.am.ActivityManagerService.installSystemProviders(ActivityManagerService.java:7971) 1970-01-01 00:00:11.181 881 881 I SettingsState: at com.android.server.SystemServer.startOtherServices(SystemServer.java:1131) 1970-01-01 00:00:11.181 881 881 I SettingsState: at com.android.server.SystemServer.run(SystemServer.java:607) 1970-01-01 00:00:11.181 881 881 I SettingsState: at com.android.server.SystemServer.main(SystemServer.java:423) 1970-01-01 00:00:11.181 881 881 I SettingsState: at java.lang.reflect.Method.invoke(Native Method) 1970-01-01 00:00:11.181 881 881 I SettingsState: at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:600) 1970-01-01 00:00:11.181 881 881 I SettingsState: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:925) 1970-01-01 00:00:11.182 881 881 I SettingsState: ancestor directory /data/system/users/0 exists 1970-01-01 00:00:11.182 881 881 I SettingsState: ancestor directory /data/system/users/0 permissions: r: true w: true x: true 1970-01-01 00:00:11.182 881 881 I SettingsState: ancestor's parent directory /data/system/users permissions: r: true w: true x: true 分析错误

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