android配置activity

android.content.ActivityNotFoundException: Unable to find explicit activity class {com.example.andclient/com.example.andclient.newClient}; have you declared this activity in your AndroidManifest.xml?

建立Activity以后还需在AndroidMainfest.xml 文件中进行配置，若是没有配置，而在程序中启动了activity,就会抛出上面的异常。