Activity的不同生命週期中調用finish

基於Android8.0，本文僅記錄不同生命週期中調用finish，Activity的生命週期執行順序。

Demo應用包含兩個Activity：ActivityA和ActivityB，如下流程是在ActivityB的不同生命週期中調用finish函數。

目錄

1.onCreate中調用finish

2.onStart中調用finish

3.onResume中調用finish

4. onPause中調用finish

5. onStop中調用finish

6. onDestroy中調用finish

7.onRestart中調用finish

8.onSaveInstanceState中調用finish

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1.onCreate中調用finish

• 啓動ActivityA：

1. ActivityA.onCreate
2. ActivityA.onStart
3. ActivityA.onResume

• ActivityA中啓動ActivityB：

1. ActivityA.onPause
2. ActivityB.onCreate
3. ActivityA.onResume
4. ActivityB.onDestroy

2.onStart中調用finish

• 啓動ActivityA：

1. ActivityA.onCreate
2. ActivityA.onStart
3. ActivityA.onResume

• ActivityA中啓動ActivityB：

1. ActivityA.onPause
2. ActivityB.onCreate
3. ActivityB.onStart
4. ActivityA.onResume
5. ActivityB.onStop
6. ActivityB.onDestroy

3.onResume中調用finish

• 啓動ActivityA

1. ActivityA.onCreate
2. ActivityA.onStart
3. ActivityA.onResume

• ActivityA中啓動ActivityB

1. ActivityA.onPause
2. ActivityB.onCreate
3. ActivityB.onStart
4. ActivityB.onResume
5. ActivityB.onPause
6. ActivityA.onResume
7. ActivityB.onStop
8. ActivityB.onDestroy

4. onPause中調用finish

• 啓動Activity

1. ActivityA.onCreate
2. ActivityA.onStart
3. ActivityA.onResume

• ActivityA中啓動ActivityB

1. ActivityA.onPause
2. ActivityB.onCreate
3. ActivityB.onStart
4. ActivityB.onResume
5. ActivityA.onSaveInstanceState
6. ActivityA.onStop

• 點擊Home鍵

1. ActivityB.onPause
2. ActivityB.onStop
3. ActivityB.onDestroy

5. onStop中調用finish

• 啓動Activity

1. ActivityA.onCreate
2. ActivityA.onStart
3. ActivityA.onResume

• ActivityA中啓動ActivityB

1. ​​​​​​​​​​​​​​ActivityA.onPause
2. ActivityB.onCreate
3. ActivityB.onStart
4. ActivityB.onResume
5. ActivityA.onSaveInstanceState
6. ActivityA.onStop​​​​​​​

• 點擊Home鍵

1. ActivityB.onPause
2. ActivityB.onSaveInstanceState
3. ActivityB.onStop
4. ActivityB.onDestroy

6. onDestroy中調用finish

• 啓動ActivityA

1. ​​​​​​​​​​​​​​​​​​​​​ActivityA.onCreate
2. ActivityA.onStart
3. ActivityA.onResume

• ActivityA中啓動ActivityB

1. ​​​​​​​​​​​​​​​​​​​​​ActivityA.onPause
2. ActivityB.onCreate
3. ActivityB.onStart
4. ActivityB.onResume
5. ActivityA.onSaveInstanceState
6. ActivityA.onStop​​​​​​​

• 點擊Home鍵

1. ​​​​​​​ActivityB.onPause
2. ActivityB.onSaveInstanceState
3. ActivityB.onStop

• 重新進入ActivityB

1. ​​​​​​​ActivityB.onRestart
2. ActivityB.onStart
3. ActivityB.onResume

• 點擊Back鍵

1. ​​​​​​​ActivityB.onPause
2. ActivityA.onRestart
3. ActivityA.onStart
4. ActivityA.onResume
5. ActivityB.onStop
6. ActivityB.onDestroy

7.onRestart中調用finish

• 啓動ActivityA

1. ​​​​​​​​​​​​​​​​​​​​​ActivityA.onCreate
2. ActivityA.onStart
3. ActivityA.onResume

• A中啓動ActivityB

1. ​​​​​​​​​​​​​​​​​​​​​ActivityA.onPause
2. ActivityB.onCreate
3. ActivityB.onStart
4. ActivityB.onResume
5. ActivityA.onSaveInstanceState
6. ActivityA.onStop​​​​​​​

• 點擊home鍵

1. ​​​​​​​ActivityB.onPause
2. ActivityB.onSaveInstanceState
3. ActivityB.onStop

• 重新進入B

1. ActivityB.onRestart
2. ActivityB.onStart
3. ActivityB.onResume
4. ActivityB.onPause
5. ActivityA.onRestart
6. ActivityA.onStart
7. ActivityA.onResume
8. ActivityB.onStop
9. ActivityB.onDestroy

8.onSaveInstanceState中調用finish

• 啓動ActivityA

1. ​​​​​​​​​​​​​​​​​​​​​ActivityA.onCreate
2. ActivityA.onStart
3. ActivityA.onResume

• A中啓動ActivityB

1. ​​​​​​​​​​​​​​​​​​​​​ActivityA.onPause
2. ActivityB.onCreate
3. ActivityB.onStart
4. ActivityB.onResume
5. ActivityA.onSaveInstanceState
6. ActivityA.onStop​​​​​​​

• 點擊home鍵

1. ​​​​​​​ActivityB.onPause
2. ActivityB.onSaveInstanceState
3. ActivityB.onStop
4. ActivityB.onDestroy

• 重新進入應用

1. ​​​​​​​ActivityA.onRestart
2. ActivityA.onStart
3. ActivityA.onResume