android: open a pdf from my app using the built in pdf viewer
问题 This was my original question: I want to be able to open a pdf file in my app using the android\'s built in pdf viewer app, but i dont know how to start other apps. I\'m sure i have to call start activity, i just dont know how to identify the app im opening and how to pass the file to that specific app. Anyone have a clue? I just learned that the pdf viewer i have on my phone is actually made by HTC and that Adobe just barely released their android pdf viewer (which is great). So the new