FLAG_ACTIVITY_TASK_ON_HOME :把當前新啟動的任務置于Home任務之上，也就是按back鍵從這個任務返回的時候會回到home，即使這個不是他們最后看見的activity

注意這個標記必須和FLAG_ACTIVITY_NEW_TASK一起使用。

實例：

一個apk中有MainActivity,ActivityA，點擊MainActivity啟動ActivityA,

public void onClick(View arg0) { // TODO Auto-generated method stub Log.i(TAG, "--onClick--task id = " + getCurrentTaskId()); Intent intent = new Intent("com.leaves.ipanel.ActivityA"); intent.addFlags(Intent.FLAG_ACTIVITY_TASK_ON_HOME | Intent.FLAG_ACTIVITY_NEW_TASK); startActivity(intent); }

啟動后的堆棧： ACTIVITY MANAGER ACTIVITIES (dumpsys activity activities) Main stack: TaskRecord{43bb4e48 #7 A com.leaves.ipanel.ActivityA U 0} Intent { act=com.leaves.ipanel.ActivityA flg=0x10004000 cmp=com.leaves.ipanel/.ActivityA } Hist #2: ActivityRecord{4274a5c0 u0 com.leaves.ipanel/.ActivityA} Intent { act=com.leaves.ipanel.ActivityA flg=0x10004000 cmp=com.leaves.ipanel/.ActivityA } ProcessRecord{4267a850 1924:com.leaves.ipanel/u0a10061} TaskRecord{426f4820 #2 A com.android.launcher U 0} Intent { act=android.intent.action.MAIN cat=[android.intent.category.HOME] flg=0x10600000 cmp=com.android.launcher/com.android.launcher2.Launcher } Hist #1: ActivityRecord{4291c7b0 u0 com.android.launcher/com.android.launcher2.Launcher} Intent { act=android.intent.action.MAIN cat=[android.intent.category.HOME] flg=0x10000000 cmp=com.android.launcher/com.android.launcher2.Launcher } ProcessRecord{4267f0b8 636:com.android.launcher/1000} TaskRecord{4360ab48 #5 A com.leaves.ipanel U 0} Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10000000 cmp=com.leaves.ipanel/.MainActivity bnds=[163,708][307,852] } Hist #0: ActivityRecord{426b6380 u0 com.leaves.ipanel/.MainActivity} Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10000000 cmp=com.leaves.ipanel/.MainActivity bnds=[163,708][307,852] } ProcessRecord{4267a850 1924:com.leaves.ipanel/u0a10061}
堆棧信息中我們可以看出，ActivityA位于了Launcher即Home之上，而MainActivity被移動到了后臺，所以這個時候我們按返回鍵，將返回到Home，而不是MainActivity

總結

以上是生活随笔為你收集整理的Android之FLAG_ACTIVITY_TASK_ON_HOME的全部內容，希望文章能夠幫你解決所遇到的問題。

如果覺得生活随笔網站內容還不錯，歡迎將生活随笔推薦給好友。