Android资料读写简单示例

界面如下

package org.snailteam;import java.io.FileNotFoundException;import java.io.IOException;import java.io.InputStream;import java.io.OutputStream;import android.app.Activity;import android.os.Bundle;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.EditText;public class FileSave extends Activity {	private EditText text;	private Button save, reader;	protected void onCreate(Bundle savedInstanceState) {		super.onCreate(savedInstanceState);		setContentView(R.layout.fileui);		text = (EditText) findViewById(R.id.editText1);		save = (Button) findViewById(R.id.buttonSave);		reader = (Button) findViewById(R.id.reader);		save.setOnClickListener(new OnClickListener() {			public void onClick(View view) {				OutputStream os = null;				try {					os = openFileOutput("textMe", MODE_PRIVATE);					os.write(text.getText().toString().getBytes());				} catch (FileNotFoundException e) {				} catch (IOException e) {				} finally {					try {						os.close();					} catch (IOException e) {						// TODO Auto-generated catch block						e.printStackTrace();					}				}				text.setText("");			}		});		reader.setOnClickListener(new OnClickListener() {			public void onClick(View arg0) {				text.setText("");				InputStream is = null;				byte[] b = null;				try {					is = openFileInput("textMe");					b = new byte[1024];					int length = is.read(b);					text.setText(new String(b));				} catch (FileNotFoundException e) {					// TODO Auto-generated catch block					e.printStackTrace();				} catch (IOException e) {					// TODO Auto-generated catch block					e.printStackTrace();				}finally{					try {						is.close();					} catch (IOException e) {						// TODO Auto-generated catch block						e.printStackTrace();					}				}			}		});	}}