如何解决退到后台再点击图标会重新拉起MainAbility实例

{ 
  "module": { 
    ... 
    "abilities": [ 
      { 
        "launchType": "specified", 
        ... 
      } 
    ] 
  } 
}
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.