运行错误：Activity not started, its current task has been brought to the front 。
原因分析：因为你的模拟器中还有东西在运行，也就是你要运行的activity已经有一个在模拟器中运行了。不要以认为模拟器退出到桌面了就没有东西在跑了。在你调试的时候异常关闭的程序有可能就有activity在运行。
解决方法：project->clean。
Activity not started, its current task has been brought to the front
2015-06-26
1025
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简介：
运行错误：Activity not started, its current task has been brought to the front 。
原因分析：因为你的模拟器中还有东西在运行，也就是你要运行的activity已经有一个在模拟器中运行了。
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