Are onTouch(), onClick() running sequentially in the same thread?

Question

Are onTouch(), onClick(), runOnUiThread() running in the same UI thread sequentially? Or do I have to worry about synchronization issue among them?

Thanks.

Answer 1

Are onTouch(), onClick(), runOnUiThread() running in the same UI thread sequentially?

Yes. 99.9% of the time, Android will be calling into your methods on the main application thread. The exceptions are:

• where you are expressly telling it to use a background thread via AsyncTask
• if you expose an interface via AIDL to third-party apps