What is the use of _start() in C?

The symbol _start is the entry point of your program. That is, the address of that symbol is the address jumped to on program start. Normally, the function with the name _start is supplied by a file called crt0.o which contains the startup code for the C runtime environment. It sets up some stuff, populates … Read more

How do I start my app when the phone starts on Android?

First, you need the permission in your AndroidManifest.xml: <uses-permission android:name=”android.permission.RECEIVE_BOOT_COMPLETED” /> Also, in yourAndroidManifest.xml, define your service and listen for the BOOT_COMPLETED action: <service android:name=”.MyService” android:label=”My Service”> <intent-filter> <action android:name=”com.myapp.MyService” /> </intent-filter> </service> <receiver android:name=”.receiver.StartMyServiceAtBootReceiver” android:label=”StartMyServiceAtBootReceiver”> <intent-filter> <action android:name=”android.intent.action.BOOT_COMPLETED” /> </intent-filter> </receiver> Then you need to define the receiver that will get the BOOT_COMPLETED action … Read more