问题
I have two HTC phones, one is HTC desire and another is HTC aria. I'm using ddms to capture the screenshot on HTC desire before, it works fine. However recently I buy one HTC aria, and I found when doing screenshot on camera preview and video playing (e.g. youtube clips), the result goes black.
I think that might be some overlay issue, but just can't figure out how do capture screenshots on camera preview.
回答1:
Sorry, this is probably just not possible. Prior to Android 3.0, the DDMS screenshot facility was done by taking a copy of the framebuffer. For surfaces in an overlay (often the case with video playback), this doesn't exist in the framebuffer so can't be included in the screenshot.
来源：https://stackoverflow.com/questions/4241464/capture-screen-shot-on-android-phone-when-playing-video-and-camera-preview