Unity3D: Image is not saving in HDD

Question

I am working on an mobile app using camera. My issue is the image snapped is not saving in the app root folder. Here is the snippet of code am using to capture the screen.

Application.CaptureScreenshot("SavedScreen.png");

But this doesn't saving anything in the internal storage.Can any one help me out. Cheers.

Solution

Application.CaptureScreenshot() has atleast 2 subtle use issues that come to mind:

1. On iOS it won't accept a path, it will only write to the Documents folder. So your "SavedScreen.png" is going to be in:

   Application.persistentDataPath + "/screenshot.png";

2. It is asynchronous, so the file will take a few frames (if not a second) to write to the file system. And it doesn't tell you when it is finished.

I prefer the full control of ReadPixels, but if you want to use CaptureScreenshot, you should wait atleast 2 seconds before you access the file:

void CaptureScreenshot()
{
  StartCoroutine(CaptureScreenshotCo());
}
IEnumerator CaptureScreenshotCo()
{
  string file = "screenshot.png";
  string path = string.Format("{0}/{1}", Application.persistentDataPath, file);
  // capture screenshot async 
  Application.CaptureScreenshot(file);
  // wait for file to be saved
  yield return new WaitForSeconds(2f);
  // now do something with file...
}

Comments

[Chris McFarland]

Possible duplicate of stackoverflow.com/questions/11725548/…

[Sharath Kumar]

I have tried all that. But my snap is not saving. Do should I grant any permissions for that. @Chris

[peterept]

Which platform are you on?