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让手机震动 · 组件速查 · App Inventor 2 中文网
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多媒体
让手机震动
使用音效组件设置手机震动时长。
音效震动手机
要让手机震动,得用“音效”组件,先把它拖到...
视频播放器 · 组件速查 · App Inventor 2 中文网
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视频播放器
上传视频,并在播放结束后自动重新播放。
视频播放器视频多媒体
需要的组件:视频播放器(多...
2 种过程的调用方式对比分析 - App Inventor 2 中文网 - 清泛IT社区,为创新赋能!
再请教一下,用这两种不同的过程调用方式,在性能和效率,使用场景上,有什么比较大的不同吗?
【字典嵌套】全局变量的字典,自己作为上一级字典的键值,内部行为模式调研...
如果有一个全局变量的字典,自己由作为上一级字典的键值。
这种情况,直接用变量名访问这个变量,和用上一级字典的键名访问这个变量,本质和效率上有什么不同吗?
就是我用“大字典.key1”和用“出厂工作模式参数...
安卓模拟器启用麦克风,支持语音输入 - App应用开发 - 清泛IT社区,为创新赋能!
默认麦克风是关闭的,设置中启用即可:
How do you remove the title text from the Android ActionBar?
...yle to override to get rid of the title text that briefly shows up when my app first launches.
20 Answers
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Reusing output from last command in Bash
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Apparently there are good reasons to use $() instead of backticks. But probably nothing to lose sleep over. github.com/koalaman/shellcheck/wiki/SC2006
– Michael Crenshaw
Jan 2 at 15:58
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Xcode 6 beta 2 issue exporting .ipa: “Your account already has a valid iOS distribution certificate”
I'm having trouble exporting an app for Ad Hoc Distribution on Xcode 6 beta 2:
27 Answers
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Disabling user selection in UIWebView
I have an app where I load content to a UIWebView and present this. I cannot disable user interaction completely because I want the user to be able to click links. I just need to disable user selection. I found somewhere in the Internets that you can use:
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Cannot hide status bar in iOS7
I just upgraded my iPhone 5 iOS 7 to four beta version. Now when I run my app from Xcode 5 on this iPhone, status bar doesn’t hide, even though it should.
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