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How to handle screen orientation change when progress dialog and background thread active?
...e the dialog is up (and the background thread is going). At this point the app either crashes, or deadlocks, or gets into a weird stage where the app does not work at all until all the threads have been killed.
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Android存储系统基础知识：内部存储，外部存储，App特定目录 ASD(app speci...
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App Inventor 2 其他参考资料 · App Inventor 2 中文网
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App Inve...
App Inventor 2 天气预报App开发 - 第三方API接入的通用方法 · App Inventor 2 中文网
创建 Apps 首页 关于我们 关于我们 发布日志 服务条款 教育 入门必读 中文教程 IoT专题 AI2拓展 ChatGPT接入 Aia Store 开通VIP ...
首次打开app时，提示打开蓝牙权限，打开后点击开始搜索，设备列表没有显示...
本帖最后由 fun_hcf 于 2025-08-11 09:48 编辑
首次打开app时，提示打开蓝牙权限，打开后点击开始搜索，设备列表没有显示蓝牙设备，而且app卡住了点不动，后面需要先在手机系统设置先打开蓝牙，然后启动app才能搜索到设备，请...
How to access data/data folder in Android device?
I am developing an app and I know my database *.db will appear in data/data/com.****.***
18 Answers
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Find the number of downloads for a particular app in apple appstore [closed]
I need to do a market research on specific type of apps. so is there a way for me to know the download count of the app / any app.
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How do popular apps authenticate user requests from their mobile app to their server?
Say I have an Android application that connects to a .Net API for receiving/setting data. The confusion that I have is regarding how to sign-up/login the user first time and authenticate it every time they make a request to the API.
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How to think in data stores instead of databases?
As an example, Google App Engine uses Google Datastore, not a standard database, to store data. Does anybody have any tips for using Google Datastore instead of databases? It seems I've trained my mind to think 100% in object relationships that map directly to table structures, and now it's hard t...
What's the meaning of exception code “EXC_I386_GPFLT”?
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To debug and find the source:
Enable Zombies for the app (Product\Scheme) and Launch Instruments, Select Zombies.
Run your app in Xcode
Then go to Instruments start recording.
Go back to your App and try generating the error.
Instruments should detect bad call (to zombie) if ...