单独的使用FLAG_ACTIVITY_SINGLE_TOP，就能达到和launchMode="singleTop"一样的效果。 FLAG_ACTIVITY_CLEAR_TOP 顾名思义，FLAG_ACTIVITY_CLEAR_TOP的作用 ... ... <看更多>

The tasks page says for single top: If an instance of the activity already exists at the top of the current task, the system routes the ... ... <看更多>

singleTop / FLAG_ACTIVITY_SINGLE_TOP -- no more than one instance of the activity on a task stack. singleTask / FLAG_ACTIVITY_NEW_TASK -- no more than one ... ... <看更多>

Android Activity Flag Task , FLAG_ACTIVITY_NEW_TASK , FLAG_ACTIVITY_SINGLE_TOP ... ... <看更多>