FLAG_ACTIVITY_CLEAR_TOP鏍囧織浣嶇敤浜庡惎鍔ㄤ竴涓柊鐨凙ctivity鏃讹紝濡傛灉璇ctivity宸茬粡鍦ㄦ爤涓瓨鍦紝鍒欏皢鍏朵箣涓婄殑Activity閮介攢姣佹帀锛屽彧淇濈暀璇ctivity鍦ㄦ爤涓€傝繖鏍峰彲浠ヤ娇寰楄繑鍥為敭杩斿洖鍒拌Activity鏃讹紝涓嶄細缁忚繃涔嬪墠鐨凙ctivity銆?/p>

濡傛灉FLAG_ACTIVITY_CLEAR_TOP涓嶈捣浣滅敤锛屽彲鑳芥湁浠ヤ笅鍑犱釜鍘熷洜锛?/p>

1. 浣跨敤浜唖ingleTask鍚姩妯″紡锛氬鏋淎ctivity鐨勫惎鍔ㄦā寮忚缃负singleTask锛岄偅涔團LAG_ACTIVITY_CLEAR_TOP灏嗕笉璧蜂綔鐢紝鍥犱负singleTask妯″紡涓嬶紝鍚姩璇ctivity鏃朵細鍏堥攢姣佹爤涓墍鏈夊湪璇ctivity涔嬩笂鐨凙ctivity锛岀劧鍚庡啀鍒涘缓璇ctivity銆?/p>

2. Activity鐨刲aunchMode璁剧疆涓簊tandard锛氬鏋淎ctivity鐨刲aunchMode璁剧疆涓簊tandard锛岄偅涔團LAG_ACTIVITY_CLEAR_TOP鍙兘涓嶈捣浣滅敤銆傚洜涓簊tandard妯″紡涓嬶紝姣忔鍚姩Activity閮戒細鍒涘缓涓€涓柊鐨勫疄渚嬶紝骞舵斁鍏ユ爤涓紝鑰屼笉浼氭鏌ユ爤涓槸鍚﹀凡瀛樺湪璇ctivity瀹炰緥銆傛墍浠ュ嵆浣胯缃簡FLAG_ACTIVITY_CLEAR_TOP锛屼緷鐒朵細鍒涘缓鏂扮殑Activity瀹炰緥銆?/p>

3. FLAG_ACTIVITY_CLEAR_TASK锛氬鏋滃惎鍔ˋctivity鐨処ntent璁剧疆浜咶LAG_ACTIVITY_CLEAR_TASK鏍囧織浣嶏紝閭ｄ箞FLAG_ACTIVITY_CLEAR_TOP灏嗕笉璧蜂綔鐢ㄣ€傚洜涓篎LAG_ACTIVITY_CLEAR_TASK浼氬皢璇ctivity鎵€鍦ㄧ殑task涓殑鎵€鏈堿ctivity閮介攢姣佹帀锛岀劧鍚庡啀鍚姩璇ctivity銆?/p>

4. 浣跨敤浜咺ntent鐨凾askStackBuilder锛氬鏋滀娇鐢ㄤ簡TaskStackBuilder鏉ュ垱寤篒ntent锛屽苟涓旇缃簡FLAG_ACTIVITY_CLEAR_TOP锛岄偅涔團LAG_ACTIVITY_CLEAR_TOP鍙兘涓嶈捣浣滅敤銆傚洜涓篢askStackBuilder浼氭牴鎹渶瑕佽嚜鍔ㄦ坊鍔燜LAG_ACTIVITY_NEW_TASK鏍囧織浣嶏紝浠ュ垱寤轰竴涓柊鐨則ask锛屽苟灏咺ntent鏀惧叆璇ask涓紝杩欎細瀵艰嚧FLAG_ACTIVITY_CLEAR_TOP涓嶈捣浣滅敤銆?/p>

浠ヤ笂鏄竴浜涘彲鑳藉鑷碏LAG_ACTIVITY_CLEAR_TOP涓嶈捣浣滅敤鐨勫師鍥狅紝鍏蜂綋瑕佹牴鎹叿浣撶殑浠ｇ爜鍜屼娇鐢ㄥ満鏅潵鍒嗘瀽鍜屾帓鏌ラ棶棰樸€?/p>