package Default;

import android.R;
import android.app.Activity;
import android.os.Bundle;

public class JustTestActivity extends Activity {
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);                这一句的main有错，说什么没有声明main这个field
    }
}