The lock screen is a vital part of your SDL app because it prevents the user from using the phone while the vehicle is in motion. SDL takes care of the lock screen for you. If you prefer your own look, but still want the recommended logic that SDL provides for free, you can also set your own custom lockscreen.
You must declare the
SDLLockScreenActivity in your manifest. To do so, simply add the following to your app's
AndroidManifest.xml if you have not already done so:
<activity android:name="com.smartdevicelink.managers.lockscreen.SDLLockScreenActivity" android:launchMode="singleTop"/>
This manifest entry must be added for the lock screen feature to work.
If you have implemented the
SdlManager and have defined the
SDLLockScreenActivity in your manifest but have not defined any lock screen configuration, you are already have a working default configuration.
It is possible to customize the background color and app icon in the default provided lockscreen. If you choose not to set your own app icon the library will use the SDL logo.
lockScreenConfig.setBackgroundColor(resourceColor); // For example, R.color.black
lockScreenConfig.setAppIcon(appIconInt); // For example, R.drawable.lockscreen icon
The default lock screen handles retrieving and setting the OEM logo from head units that support this feature.
This feature can be disabled on the default lock screen by setting
showDeviceLogo to false.
If you would like to use your own lock screen instead of the one provided by the library, but still use the logic we provide, you can use a new initializer within
In SDL Android v4.10, a new parameter
displayMode has been added to the
LockScreenConfig to control the state of the lock screen and the older boolean parameters have been deprecated.
|never||The lock screen should never be shown. This should almost always mean that you will build your own lock screen|
|requiredOnly||The lock screen should only be shown when it is required by the head unit|
|optionalOrRequired||The lock screen should be shown when required by the head unit or when the head unit says that its optional, but not in other cases, such as before the user has interacted with your app on the head unit|
|always||The lock screen should always be shown after connection|
Please note that a lock screen will be required by most OEMs. You can disable the lock screen manager, but you will then be required to implement your own logic for showing and hiding the lock screen. This is not recommended as the
LockScreenConfig adheres to most OEM lock screen requirements. However, if you must create a lock screen manager from scratch, the library's lock screen manager can be disabled via the
LockScreenConfig as follows:
LockScreenConfig lockScreenConfig = new LockScreenConfig(); lockScreenConfig.setDisplayMode(LockScreenConfig.DISPLAY_MODE_NEVER);
The lock screen manager is configured to dismiss the lock screen when it is safe to do so. To always have the lock screen visible when the device is connected to the head unit, simply update the lock screen configuration.
LockScreenConfig lockScreenConfig = new LockScreenConfig(); lockScreenConfig.setDisplayMode(LockScreenConfig.DISPLAY_MODE_ALWAYS);
Starting in RPC v6.0+ users may now have the ability to dismiss the lock screen by swiping the lock screen down. Not all OEMs support this new feature. A dismissible lock screen is enabled by default if the head unit enables the feature, but you can disable it manually as well.
To disable this feature, set
enableDismissGesture to false.
LockScreenConfig lockScreenConfig = new LockScreenConfig(); lockScreenConfig.enableDismissGesture(false);