How can I sign my application with the system signature key?

Question

I need to create a Robotium application that would use Settings application to turn ON/OFF WIFi from menu Settings->Wireless & networks->Wi-Fi. I managed to find some sa

Answer 1

I was having the same problem.. There are some permissions that only system apps are allowed to have . I was trying to access the adb shell dumpsys commands from my application with the permissions android.permission.DUMP .

The solution to this is ...

In the Android manifest file of your project add the following line in the manifest tag

android:sharedUserId="android.uid.system"

You need to have two signature keys present in the code that is used to build the binary.

platform.x509.pem

platform.pk8

that is present in the

android/build/target/product/security

Download a tool from the net i.e.

signapk.jar

From the eclipse export your unsigned apk. by right click on the project from the android tools. Keep all the things i.e. keys , unsigned apk, and signapk.jar in a folder. Run the following Command

java -jar signapk.jar platform.x509.pem platform.pk8 unsigned.apk signed.apk

unsigned apk is the name of your apk and signed apk is the new name you want . After this just install your signed app in the phone with the command

adb shell install signed.apk

Answer 2

The best way to enable wifi from your application would be to use the WifiManager.

WifiManager wManager = (WifiManager)getSystemService(Context.WIFI_SERVICE);

if(!wManager.isWifiEnabled() && wManager.getWifiState() != WifiManager.WIFI_STATE_ENABLING)
    wManager.setWifiEnabled(true);

Note: You also have to add the following permissions to your manifest

<uses-permission android:name="android.permissions.ACCESS_WIFI_STATE" />
<uses-permission android:name="android.permissions.CHANGE_WIFI_STATE" />