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// 保存文件		OnClickListener save_listener = new OnClickListener() {			@Override			public void onClick(View v) {				// TODO Auto-generated method stub				if (et_input.getText().toString().equals("")) {					Toast.makeText(context, "请输入文本!", 1000).show();					return;				}				switch (v.getId()) {				case R.id.In_save:					FileOutputStream fos = null;					try {						fos = openFileOutput(FILENAME, Context.MODE_PRIVATE);// 以私有模式创建文件						String text = et_input.getText().toString();						fos.write(text.getBytes());// 写入数据						fos.flush(); // 将缓冲区剩余数据写入文件						fos.close(); // 关闭FileOutputStream						Toast.makeText(context, "保存文件成功", 1000).show();					} catch (FileNotFoundException e) {						// TODO Auto-generated catch block						e.printStackTrace();					} catch (IOException e) {						// TODO Auto-generated catch block						e.printStackTrace();					} finally {						if (fos != null) {							try {								fos.close();							} catch (IOException e) {								// TODO Auto-generated catch block								e.printStackTrace();							}						}					}					break;				case R.id.In_save_sd:					if (Environment.getExternalStorageState().equals(							android.os.Environment.MEDIA_MOUNTED)) {						FileOutputStream ostream = null;						try {							//*							File myfile = new File(Environment									.getExternalStorageDirectory().getPath(),									FILENAME);							Log.i("In_save_sd",Environment									.getExternalStorageDirectory().getPath());							/*							if (!myfile.exists()) {								myfile.createNewFile();							}							*/							if (myfile.exists()) {								myfile.delete();							}							myfile.createNewFile();							//*/							/*						FileOutputStream fos = null;						fos = openFileOutput(FILENAME, Context.MODE_PRIVATE);// 以私有模式创建文件						String text = et_input.getText().toString();						fos.write(text.getBytes());// 写入数据						fos.flush(); // 将缓冲区剩余数据写入文件						fos.close(); // 关闭FileOutputStream						Toast.makeText(context, "保存文件成功", 1000).show();							 * */							/*							ostream = openFileOutput(Environment									.getExternalStorageDirectory().getPath()+FILENAME, 									Context.MODE_WORLD_WRITEABLE);// 以私有模式创建文件							*/							ostream = new FileOutputStream(myfile, true);							String text = et_input.getText().toString();							ostream.write(text.getBytes());							//							//ostream.flush(); // 将缓冲区剩余数据写入文件							//ostream.close(); // 关闭FileOutputStream														//							Toast.makeText(context, "保存文件到sd卡成功", 1000).show();						} catch (FileNotFoundException e) {							// TODO Auto-generated catch block							e.printStackTrace();						} catch (IOException e) {							// TODO Auto-generated catch block							e.printStackTrace();						} finally {							if (ostream != null) {								try {									ostream.close();								} catch (IOException e) {									// TODO Auto-generated catch block									e.printStackTrace();								}							}						}					}					break;				default:					break;				}			}		};		btn_save.setOnClickListener(save_listener);		btn_save_sd.setOnClickListener(save_listener);		// 读取		OnClickListener output_listener = new OnClickListener() {			@Override			public void onClick(View v) {				// TODO Auto-generated method stub				FileInputStream inStream = null;				ByteArrayOutputStream stream = null;				try {					switch (v.getId()) {					case R.id.out_put:						inStream = openFileInput(FILENAME);						break;					case R.id.out_put_sd:						if (Environment.getExternalStorageState().equals(								android.os.Environment.MEDIA_MOUNTED)) {							File sd_file = new File(Environment									.getExternalStorageDirectory().getPath(),									FILENAME);							Log.i("out_put_sd",Environment									.getExternalStorageDirectory().getPath());							if (!sd_file.exists()) {								Toast.makeText(context, "未找到该文件", 1000).show();								return;							}							inStream = new FileInputStream(sd_file);						}					default:						break;					}					stream = new ByteArrayOutputStream();					byte[] buffer = new byte[1024];					int length = -1;					while ((length = inStream.read(buffer)) != -1) {						stream.write(buffer, 0, length);					}					stream.close();					inStream.close();					et_output.setText(stream.toString());					Toast.makeText(context, "获取文本成功!", 1000).show();				} catch (FileNotFoundException e) {					e.printStackTrace();					Toast.makeText(context, "文件未找到", 1000).show();					System.out.println(e.toString());				} catch (IOException e) {					System.out.println(e.toString());					return;				} finally {					try {						if (stream != null)							stream.close();						if (inStream != null)							inStream.close();					} catch (IOException e) {						// TODO Auto-generated catch block						e.printStackTrace();					}				}			}		};		btn_out.setOnClickListener(output_listener);		btn_out_sd.setOnClickListener(output_listener);

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