FLAG_WINDOW_IS_OBSCURED 安全性检测

/** * This flag indicates that the window that received this motion event is partly * or wholly obscured by another visible window above it.  This flag is set to true * even if the event did not directly pass through the obscured area. * A security sensitive application can check this flag to identify situations in which * a malicious application may have covered up part of its content for the purpose * of misleading the user or hijacking touches.  An appropriate response might be * to drop the suspect touches or to take additional precautions to confirm the user's * actual intent. */public static final int FLAG_WINDOW_IS_OBSCURED = 0x1;