Android imageView无法解析或不是字段

Question

我正在尝试访问手机中的相机并导入了JT.bagapp.R，因为即使它位于gen文件夹中也无法解析R文件。我的代码在

之下

import JT.bagapp.R;
import android.os.Bundle;
import android.os.Environment;
import android.provider.MediaStore;
import android.app.Activity;
import android.content.Intent;
import android.graphics.Bitmap;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageView;

public class bagapp extends Activity {
ImageView iv;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.home);

    iv = (ImageView) findViewById(R.id.imageView);
    Button take = (Button) findViewById(R.id.take);
    take.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View v) {
            Intent intent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
            startActivityForResult(intent, 0);
        }
    });
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data)
{
    if(requestCode == 0)
    {
        Bitmap theImage = (Bitmap) data.getExtras().get("data");
        iv.setImageBitmap(theImage);
    }
}
}