Android开发环境搭建后，新建HelloAndroid工程后，HelloAndroid活动类报错，代码如下：
- Java code
package com.android.hello;import android.R;import android.app.Activity;import android.os.Bundle;public class HelloAndroid extends Activity { /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); }}在setContentView(R.layout.main);行报错，信息如下：
Multiple markers at this line
- Line breakpoint:HelloAndroid [line: 11] - onCreate
(Bundle)
- R cannot be resolved
ctrl+1后会提示导入 import android.R; 包，但是导入这个包后还是报错，报错信息如下：
Multiple markers at this line
- R.layout.main cannot be resolved
- Line breakpoint:HelloAndroid [line: 12] - onCreate
(Bundle)
不知道是我的环境搭建又问题，还是需要再设置什么路径什么的？麻烦各位高手指教下！谢谢
------解决方案--------------------------------------------------------
R 引用错误
------解决方案--------------------------------------------------------
import android.R; 去掉这玩意