How does Android press a preset hardware button on any interface to enter an Activity?

 

 

Enables you to enter an Activity by pressing a preset button on any non-lock screen interface.

Modify the following methods in the alps/frameworks/base/policy/src/com/android/internal/policy/impl/PhoneWindowManager. java file:

Public long interceptKeyBeforeDispatching (WindowState win, KeyEvent event, int policyFlags)

Find the following code snippet:

Else if (keyCode = KeyEvent. KEYCODE_APP_SWITCH ){

If (down & repeatCount = 0 &&! KeyguardOn ){

Showorhiderecent1_dialog (recent_assist_behavior_show_or_dismiss );

}

Return-1;

}

Add the corresponding code after this else if:

Else if (keyCode = KeyEvent. KEYCODE_APP_SWITCH ){

If (down & repeatCount = 0 &&! KeyguardOn ){

Showorhiderecent1_dialog (recent_assist_behavior_show_or_dismiss );

}

Return-1;

} // Add begin

Else if (keyCode = KeyEvent. KEYCODE_XXX ){

If (down & repeatCount = 0 &&! KeyguardOn ){

MContext. startActivity (new Intent (intent. xxx). addFlags (Intent. FLAG_ACTIVITY_NEW_TASK ));

}

Return-1;

} // Add end

 

Note:

1. The KeyEvent. KEYCODE_XXX written above is the pre-set key value of the hard key. You can set it as needed;

2. In startActivity (new Intent (intent. xxx), intent. xxx needs to be written according to the started activity.