软件企业网站模板,微网站建设 合同,深圳福田天气,网站建商城FLAG_ACTIVITY_SINGLE_TOP :如果当前栈顶的activity就是要启动的activity,则不会再启动一个新的activity实例#xff1a;我们有一个apk#xff0c;apk中包含两个Activity:MainActivity和ActivityA#xff0c;点击MainActivity启动ActivityA,点击ActivityA还是启动ActivityA我们有一个apkapk中包含两个Activity:MainActivity和ActivityA点击MainActivity启动ActivityA,点击ActivityA还是启动ActivityA但我们设置FLAG_ACTIVITY_SINGLE_TOP标记[java] view plain copyprint?public void onClick(View v) { // TODO Auto-generated method stub Log.i(TAG, --onClick--task id getCurrentTaskId()); Intent intent new Intent(com.leaves.ipanel.ActivityA); //intent.setFlags( Intent.FLAG_ACTIVITY_NEW_TASK); intent.addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP); startActivity(intent); } 启动动ActivityA随便我们怎么再点击都只有一个ActivityA实例堆栈[plain] view plain copyprint?ACTIVITY MANAGER ACTIVITIES (dumpsys activity activities) Main stack: TaskRecord{438f1ed8 #9 A com.leaves.ipanel U 0} Intent { actandroid.intent.action.MAIN cat[android.intent.category.LAUNCHER] flg0x10000000 cmpcom.leaves.ipanel/.MainActivity } Hist #2: ActivityRecord{4265b1b0 u0 com.leaves.ipanel/.ActivityA} Intent { actcom.leaves.ipanel.ActivityA flg0x20000000 cmpcom.leaves.ipanel/.ActivityA } ProcessRecord{4292a550 2115:com.leaves.ipanel/u0a10061} Hist #1: ActivityRecord{42485758 u0 com.leaves.ipanel/.MainActivity} Intent { actandroid.intent.action.MAIN cat[android.intent.category.LAUNCHER] flg0x10000000 cmpcom.leaves.ipanel/.MainActivity } ProcessRecord{4292a550 2115:com.leaves.ipanel/u0a10061} TaskRecord{426f4820 #2 A com.android.launcher U 0} Intent { actandroid.intent.action.MAIN cat[android.intent.category.HOME] flg0x10600000 cmpcom.android.launcher/com.android.launcher2.Launcher } Hist #0: ActivityRecord{4291c7b0 u0 com.android.launcher/com.android.launcher2.Launcher} Intent { actandroid.intent.action.MAIN cat[android.intent.category.HOME] flg0x10000000 cmpcom.android.launcher/com.android.launcher2.Launcher } ProcessRecord{4267f0b8 636:com.android.launcher/1000}
