Great God you got the wrong question should be how Andrews

Andrews feels wrong beginner looking too hard

Is there any good way

Wrong error still not up and running yet prompt the application ....

Boss Is there a good way to seek experience

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DEMO made up
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logcat is common to see log, looking the wrong way.
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Breakpoints are also very good with

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logcat
Citie end
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logcat, debug
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Look at the code, look at the interface
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In fact, like to see and java which line is wrong with the debug
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Baidu eclipse debug debug log to see or directly logcat
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1, generally like to add Log printed in the code, according to the print information to debug, or Toast tips. That is upstairs said logcat
2, there is a direct debug in IDE debugger to set breakpoints.
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I always use logcat to do, huh,