Implementation of simulating pressing home key in Android launcher

Implementation of simulating pressing home key in Android launcher

In Android, if you want to move an activity in the stack to front, you can define a broadcastreceiver to receive a certain type of broadcast and start the activity in onReceive. However, it should be noted that there is a problem with the context parameter in front of startactivity.

The Android activity cannot use startactivity to advance itself to the front of the stack, so the context of startactivity in onReceive cannot be an activity.

In addition, if the broadcastreceiver is dynamically registered, the parameter of the context passed in onReceive is the activity and cannot be used.

An effective way to deal with the above problem is not to use the context directly, but to use context. Getapplicationcontext (), so that movetasktofront can be implemented.

Corresponding to movetasktofront is movetasktoback, which is relatively simple. Activity has provided the movetasktoback method. At that time, it should be noted that once this method is called, the task of the activity will be moved to the bottom of the stack as a whole, which needs special attention.

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