Android widget to lock my android phone Is there any android widget which allows me to lock my phone?
The 'power' button on my android phone is broken? I can't use that to lock my phone screen.

Thank you.
Short answer is no.

[Extended Answer]
This would require the use of PowerManager.gotoSleep(long time), and the use of that method requires the android.permission.DEVICE_POWER permission. DEVICE_POWER is only available to applications signed as system applications. Only applications that ship with the device and signed by the manufacture would be allowed to use the method.