running logcat on Eclipse

I sear开发者_如何学Cched through whole internet but I still don't understand how I need to set up logCat what it would run. Could someone help with this?

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In the main menu, choose Window > Open Perspective > Other. In the dialog that appears, choose DDMS. LogCat will be the tool at the bottom of that perspective (by default -- you can reposition it).

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Logcat usage is tagbased. You develop your Application and when you want to log something you say:

Log.i("CUSTOM", "getting old data!");

then you go into Logcat and define a Custom Filter, there is an option to filter by TAG. This is the first parameter on your Log.i call, so for example you define a filter for your "CUSTOM"-Tag. Now you have a new tab in your logcat that holds all your CUSTOM-logmessages.

hope that helps