Android TXT资料读写

package com.wirelessqa.helper;import java.io.FileInputStream;import java.io.FileOutputStream;import java.io.InputStream;import org.apache.http.util.EncodingUtils;import android.app.Activity;public class FileAccess extends Activity {	/**	 * 一、私有文件夹下的文件存取（/data/data/包名/files）	 * 	 * @param fileName	 * @param message	 */	public void writeFileData(String fileName, String message) {		try {			FileOutputStream fout = openFileOutput(fileName, MODE_PRIVATE);			byte[] bytes = message.getBytes();			fout.write(bytes);			fout.close();		} catch (Exception e) {			e.printStackTrace();		}	}	/**	 * //读文件在./data/data/包名/files/下面	 * 	 * @param fileName	 * @return	 */	public String readFileData(String fileName) {		String res = "";		try {			FileInputStream fin = openFileInput(fileName);			int length = fin.available();			byte[] buffer = new byte[length];			fin.read(buffer);			res = EncodingUtils.getString(buffer, "UTF-8");			fin.close();		} catch (Exception e) {			e.printStackTrace();		}		return res;	}	/**	 * 写， 读sdcard目录上的文件，要用FileOutputStream， 不能用openFileOutput	 * 不同点：openFileOutput是在raw里编译过的，FileOutputStream是任何文件都可以	 * @param fileName	 * @param message	 */	// 写在/mnt/sdcard/目录下面的文件	public void writeFileSdcard(String fileName, String message) {		try {			// FileOutputStream fout = openFileOutput(fileName, MODE_PRIVATE);			FileOutputStream fout = new FileOutputStream(fileName);			byte[] bytes = message.getBytes();			fout.write(bytes);			fout.close();		}		catch (Exception e) {			e.printStackTrace();		}	}	// 读在/mnt/sdcard/目录下面的文件	public String readFileSdcard(String fileName) {		String res = "";		try {			FileInputStream fin = new FileInputStream(fileName);			int length = fin.available();			byte[] buffer = new byte[length];			fin.read(buffer);			res = EncodingUtils.getString(buffer, "UTF-8");			fin.close();		}		catch (Exception e) {			e.printStackTrace();		}		return res;	}	/**	 * 二、从resource中的raw文件夹中获取文件并读取数据（资源文件只能读不能写）	 * 	 * @param fileInRaw	 * @return	 */	public String readFromRaw(int fileInRaw) {		String res = "";		try {			InputStream in = getResources().openRawResource(fileInRaw);			int length = in.available();			byte[] buffer = new byte[length];			in.read(buffer);			res = EncodingUtils.getString(buffer, "GBK");			// res = new String(buffer,"GBK");			in.close();		} catch (Exception e) {			e.printStackTrace();		}		return res;	}	/**	 * 三、从asset中获取文件并读取数据（资源文件只能读不能写）	 * 	 * @param fileName	 * @return	 */	public String readFromAsset(String fileName) {		String res = "";		try {			InputStream in = getResources().getAssets().open(fileName);			int length = in.available();			byte[] buffer = new byte[length];			in.read(buffer);			res = EncodingUtils.getString(buffer, "UTF-8");		} catch (Exception e) {			e.printStackTrace();		}		return res;	}}