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By Design
Votes
0
Found in
2017.4.0f1
2018.2.14f1
2018.3.0a1
2019.1.0a1
Issue ID
1099664
Regression
No
In Editor, SetActive(true) does not work when it is called the first time
How to reproduce:
1. Open attached project "setActiveFalse_firstTime7.zip" and scene "FloorMap00"
2. Enter Play mode
3. In Game View, press on "Asset Tracking" button
4. Observe Console window (the image SetActive(true) was called, but it never showed up)
5. In Game View, press on "X" button
6. Repeat step 3-4 (the image shows up)
Expected result: after pressing on "Asset Tracking" button the image pops up
Actual result: the first attempt of pressing on pressing on "Asset Tracking" button the image did not show up
Reproducible with: 2017.4.16f1, 2018.3.1f1, 2019.1.0a12
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Resolution Note:
This is by design. gameObject.SetActive(false); is called in Start() of the MonoBehaviour that SetActive(true) is called on.
First time gameObject.SetActive(false), Start() will be called and then the gameObject will be disabled immediately. The second time gameObject.SetActive(false) is called, Start() has already been called and won't be called again. So SetActive(true) works the second time because gameObject.SetActive(false) isn't called afterwards.