在eclipse里运行android 跳转Activity时出错

06-27 04:55:21.636: E/AndroidRuntime(1930): Caused by: android.content.ActivityNotFoundException: Unable to find explicit activity class {com.example.myriji/com.example.myriji.HomeActivity}; have you declared this activity in your AndroidManifest.xml?
06-27 04:55:21.636: E/AndroidRuntime(1930): at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1628)
06-27 04:55:21.636: E/AndroidRuntime(1930): at android.app.Instrumentation.execStartActivity(Instrumentation.java:1424)
06-27 04:55:21.636: E/AndroidRuntime(1930): at android.app.Activity.startActivityForResult(Activity.java:3423)
06-27 04:55:21.636: E/AndroidRuntime(1930): at android.app.Activity.startActivityForResult(Activity.java:3384)
06-27 04:55:21.636: E/AndroidRuntime(1930): at android.app.Activity.startActivity(Activity.java:3626)
06-27 04:55:21.636: E/AndroidRuntime(1930): at android.app.Activity.startActivity(Activity.java:3594)
06-27 04:55:21.636: E/AndroidRuntime(1930): at com.example.myriji.MainActivity.click(MainActivity.java:33)
06-27 04:55:21.636: E/AndroidRuntime(1930): ... 14 more

使用新的activity之前要在AndroidManifest注册
在AndroidManifest的application标签内部添加

你的路径中含有空格，比如d:\android sdk\，中间有一个空格，所以路径只识别到sdk，截图里的提示就是这个意思，你还是把android-sdk安装到一个没有空格的目录下吧，比如d：\android\，不用重新安装，只要剪切粘贴一下就行，然后改一下path就行贰护蹿咎讷侥寸鞋丹猫了，有问题的话再说