assets 获取流～～

package xiaohang.zhimeng;   
  
import java.io.InputStream;   
import org.apache.http.util.EncodingUtils;   
import android.app.Activity;   
import android.graphics.Color;   
import android.os.Bundle;   
import android.widget.TextView;   
  
public class Activity02 extends Activity{   
       
    public static final String ENCODING = "UTF-8";   
    TextView tv1;   
    TextView tv2;   
       
    @Override  
    protected void onCreate(Bundle savedInstanceState) {   
        super.onCreate(savedInstanceState);   
        setContentView(R.layout.main);   
        tv1 = (TextView)findViewById(R.id.tv1);   
        tv1.setTextColor(Color.RED);   
        tv1.setTextSize(15.0f);   
        tv2 = (TextView)findViewById(R.id.tv2);   
        tv2.setTextColor(Color.RED);   
        tv2.setTextSize(15.0f);   
        tv1.setText(getFromRaw());   
        tv2.setText(getFromAssets("test2.txt"));   
    }   
       
    //从resources中的raw 文件夹中获取文件并读取数据   
    public String getFromRaw(){   
        String result = "";   
            try {   
                InputStream in = getResources().openRawResource(R.raw.test1);   
                //获取文件的字节数   
                int lenght = in.available();   
                //创建byte数组   
                byte[]  buffer = new byte[lenght];   
                //将文件中的数据读到byte数组中   
                in.read(buffer);   
                result = EncodingUtils.getString(buffer, ENCODING);   
            } catch (Exception e) {   
                e.printStackTrace();   
            }   
            return result;   
    }   
       
    //从assets 文件夹中获取文件并读取数据   
    public String getFromAssets(String fileName){   
        String result = "";   
            try {   
                InputStream in = getResources().getAssets().open(fileName);   
                //获取文件的字节数   
                int lenght = in.available();   
                //创建byte数组   
                byte[]  buffer = new byte[lenght];   
                //将文件中的数据读到byte数组中   
                in.read(buffer);   
                result = EncodingUtils.getString(buffer, ENCODING);   
            } catch (Exception e) {   
                e.printStackTrace();   
            }   
            return result;   
    }   
}