2021-12-07 15:52
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这里实现的是搜索框时时查询，代码中是在数据库中使用的模糊查询；整个布局使用的是线性布局，搜索框又是一个线性布局（里面包含一个相对布局和一个TextView,相对布局里面有一个EditText和ImageVIew），下面是一个ListView;搜索框其实就是一个EditText，背景是用shape自己画出来的；上面放一个"删除"的图片；在Activity中给E
2021-12-07 14:10
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Android provides many kinds of storage for applications to store their data. These storage places are shared preferences, internal and external storage, SQLite storage, and storage
2021-12-07 14:05
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Android Studio导入项目的时候，一直卡在Building gradle project info这一步，主要原因还是因为被墙的结果。gradle官网虽然可以访问，但是速度连蜗牛都赶不上...解决办法主要有两种，一是直接下载gradle离线包，二是修改项目的gradle-wrapper.properties里的gradle版本为自己电脑已有的版本。
2021-12-07 14:05
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默认在Android SDK安装目录的docs\reference\packages.html下。下面是Android的sdk、api及工程目录说明：SDK下包的说明：1：add-ons：Android开发需要的第三方文件和软件库2：docs：Android的文档。包括开发指南、API参考、资源等3：extras：扩展的附加包4：platforms：你安装下
2021-12-07 14:05
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Broadcast Receiverssimply respond to broadcast messages from other applications or from the system itself. These messages are sometime called events or intents. For example, appl
2021-12-07 14:05
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An AndroidIntentis an abstract description of an operation to be performed. It can be used withstartActivityto launch an Activity,broadcastIntentto send it to any interested Broadc
2021-12-07 14:05
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Android is an open source and Linux-based operating system for mobile devices such as smartphones and tablet computers. Android was developed by the Open Handset Alliance, led by G
2021-12-07 14:05
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A content provider component supplies data from one application to others on request. Such requests are handled by the methods of the ContentResolver class. A content provider ca