Optimization of launcher's process by pressing the Home Key

I always felt that the reaction to press the Home Key launcher was not correct. I found that the process of pressing the Home Key was like this, and the overall process was long-pressed and Short-pressed.

Long press: displays the six most recently run programs.

Short Press: 1, return to the center screen. 2. If the screen is in the center, the thumbnails of all screens are displayed.

By comparison, it is concluded that the launcher will display thumbnails of all screens no matter under which circumstances the Home Key is pressed. In many cases, the user just wants to return to the default home screen from other screens,

You only need to add a few lines of code:

Public void showpreviews (final view anchor, int start, int end)
{
If (newpreviews)
{
If (! Mworkspace. isdefascrescreenshowing ())
{
Dismisspreviews ();
Mworkspace. movetodefaultscreen ();
}
Else
{

Showingpreviews = true;
Hidedesktop (true );
Mworkspace. Lock ();
Mworkspace. opensense (true );
}
}