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How to Open Android Emulator form Command Line and install Apk in Emulator

  You can also view this on my youtube channel How to Open Android Emulator from Commad Line 1.Open Command line 2.Change working directory to android sdk directory    cd  appdata/local/android/sdk/emulator 3.List all available Android virtual devices     emulator -list-avds 4. All your avds will be shown choose the avd_name you want to open    emulator -avd avd_name   5.Your Android virtual device will open up How to install APk file to emulator Drag the APK to Android emulator it will install automatically
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Android Sqlite and ListView Example

This is simple application which insert data into Sqlite database --and shows the data  from the database in a ListView ListView is not used in android Anymore . We use RecyclerView and CardView   in Android RecyclerView Demo is available on the following link http://androidtuts4u.blogspot.in/2017/04/android-recyclerview-example.html RecyclerView with CardView Demo is available on the following link http://androidtuts4u.blogspot.in/2017/09/android-card-view-example.html This  is the first Activity of application which shows data from database in listview. Register here buton will start a Registration Activity. Submit button will add data to database and show it in the ListView of MainActivity. Update can be performed by clicking ListView items.     you can download the source code of this project from  google drive   https://drive.google.com/folderview?id=0BySLpWhqmbbdS0dtT1R2TXdBWEE&usp=sharing click on the abov...
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ViewModel with Jetpack Compose

  Compose uses remember API to store object in memory. Stored value is returned during recomposition . remember helps us retain data across recompostion , but when configuration changes happen all stored values are lost . One way to overcome this is to use rememberSaveable . rememberSaveable saves any value that can be saved in a Bundle , so it will survive configuration changes.  But when we are using lot of data , for example a list we can cannot use a rememberSavble beacuse there is limit on amount of data that can be stored in Bundle . So we use ViweModel . ViewModel provide the ui state and access to the business logic located in other layers of the app. It also survives configuration changes. ViewModel handles events coming from the UI or other layers of the app and updates the state holder based on the events. We need to add the following dependency in our app level build.gradle to use ViewModel implementation "androidx.lifecycle:lifecycle-viewmodel-compose:2.4.1" F...
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