I thought people writing a thesis should be more independent. But there is nothing wrong in seeking for an advice. The only problem is how t seek for it. I think you need not just the idea of the project, but rather the idea on where the project ideas come from and how to get to a good idea.
First, please see my blog post on the topic:
Sergey Alexandrovich Kryukov - Professional Profile - CodeProject[
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Are you getting the hint?
For further ideas, please see my past answers:
Please suggest a good concept for my .NET project ?[
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JAVA final year projects[
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Need Project Ideas Help me Plz[
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Can you suggest a topic for my Senior Project? Programming[
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how to improve my technological capability[
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One Challenge in WPF Programing[
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I would add specifically on Android: this platform is relatively fresh. Despite enormous level of development activity, you can easily find out that you cannot find a ready-to-use solution for many things you would like to do, more exactly, too many of the solutions don't provide required features and quality yet. There are too many unsolved problems. Following my advice expressed on the past answers referenced above, you can always look for something you wanted to have on your Android device, you or your friends and relatives. The only problem will be picking the one you are qualified enough to solve withing the required time frame. But you are the only one who can judge on that.
—SA