If you are using SQLite as local database for your Xamarin Forms application, you might want to have a look at the local database with a database browser. Here’s short information about how to browse through your local SQLite Database for Xamarin Forms.
Where is the SQLite database located?
For VS 2017, please run the VS setup.exe, select continue->Modify>Individual components->Emulators tag->Visual Studio Emulator for Android, check it and update: Note: Please make sure your machine meets the following system requirements. Can't run android project in Visual Studio for Mac. I have installed VS for Mac and try to start a blank android app with Simulator and it is build successfully. Each instance of the Android Emulator uses an Android virtual device (AVD) to specify the Android version and hardware characteristics of the simulated device. To effectively test your app, you should create an AVD that models each device on which your app is designed to run.
If you have already configured your SQLite database for Xamarin Forms, you know that you have to supply the path to your SQLite path in App.xaml constructor like this:
In my connection manager class I store the path to the database in a local variable as it has to be supplied in the constructor of the connection manager like this:
“/data/data/de.dotnetco/files/myapp.db3”
So at which location does Android emulator store the SQLite .db3 database? As it’s stored within the emulator, it’s not too easy to access it from your host computer. Therefore I prefer debugging my SQLite database on the iOS Simulator. As it’s Xamarin Forms, behaviour of SQLite in Android and iOS should be the same so I’ll use the easier way 🙂 Nevertheless there might be circumstances where you want to have access to the SQLite database also an Android.
How to access Xamarin Forms Android Emulator files and databases?
To access files (and databases) on your Xamarin Forms Android Emulator you need to use the Android Debug Bridge, better known as ‘adb’. It’s installed with Android SDK so you should have it already on your Mac. If you open Terminal and just type “adb” you will probably get “command not found” so there is a little bit to do.
Use adb on Mac for Xamarin Development
To make it short: In Visual Studio for Mac, click “Tools” and select “SDK Command Prompt” within “Android” section. In theory, this should open a command prompt at your android installation so you could use adb at command prompt.
In my case, the command prompt just opens in my user directory so I could not use adb there. Instead, I have to manually navigate: To find your Android SDK location, open Visual Studio for Mac and select “Preferences”. In “Projects” you will find “SDK Locations”. Open the “Android” section and have a look at tab “Android SDK Location”. It should be located in path “/Users/[username]/Library/Developer/Xamarin/android-sdk-macosx”.
With subdirectory “platform-tools” (not “tools”) you should find adb. So at your command prompt, just enter “cd Library/Developer/Xamarin/android-sdk-macosx/platform-tools”.
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To check whether it works as expected, enter “./adb devices”. It should return a list of attached android devices, both physical hardware and also all running android emulators on your Mac.
So how could we access the sqlite database on android emulator now? As already written above, your database location on your emulator might be something like “/data/data/de.dotnetco/files/myapp.db3”. So in your command prompt, use “pull” to a copy of your SQlite database to your mac, e.g.:
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./adb pull/data/data/de.dotnetco/files/myapp.db3/Users/[username]/Downloads/myapp.db3 |
will copy the database to your local download folder.
How to open SQLite .db3 database on Mac?
So now we know where it’s located, but how can we browse the SQLite database? I’m using an app called “Datum – SQLite“, available on the App Store. It works quite fine for an affordable price of just 5,49€. Unfortunately it does not seem to be supported anymore because the website does not exist anymore. But it’s still working fine. However, there should not be too many changes so even with the latest version from 13. February 2016, it did not ran into any problems. I could open my database, delete records, update items etc. So for me it’s fine. You might have a look around for any other SQLite Database browser, e.g. sqlitebrowser.org or SQLiteStudio. Both are free and open-source, hosted at Github, but currently I’m happy with Datum so please check on your own.