android用sharepreference保存输入框中的内容

Android 自动生成的文件
http://www.eoeandroid.com/thread-81948-1-1.html

SAX解析本地xml文件
http://www.eoeandroid.com/thread-92835-1-1.html

在android中生成xml文件例子
http://www.eoeandroid.com/thread-198223-1-1.html

package com.cia.settings;
 
import android.app.Activity;
 
import android.content.SharedPreferences;
 
import android.content.SharedPreferences.Editor;
 
import android.os.Bundle;
 
import android.view.KeyEvent;
 
import android.widget.EditText;
 
import android.widget.TextView;
 
public class MainActivity extends Activity
 
{
 
private EditText et_server,et_backup,et_upgrade;
 
private TextView  tv_show_version,tv_show_mac;
 
private SharedPreferences sharedPrefrences;
 
private Editor editor;
 
  // 要存储的文件名
 
  private static final String FILENAME = "filename";
 
@Override
 
public void onCreate(Bundle savedInstanceState)
 
{
 
  super.onCreate(savedInstanceState);
 
  setContentView(R.layout.main);
 
  et_server = (EditText) findViewById(R.id.edit_server);
 
  et_backup = (EditText) findViewById(R.id.edit_backup);
 
  et_upgrade = (EditText) findViewById(R.id.edit_upgrade);
 
  
 
    sharedPrefrences = this.getSharedPreferences(FILENAME, MODE_WORLD_READABLE);
 
   
 
    
    String r_server = sharedPrefrences.getString("server", "");
 
    String r_backup = sharedPrefrences.getString("backup", "");
 
    String r_upgrade= sharedPrefrences.getString("upgrade", "");
 
    et_server.setText(r_server);
 
    et_backup.setText(r_backup);
 
    et_upgrade.setText(r_upgrade);
 
    
    
}
 

//在点击退出时保存数据
 
@Override
 
public boolean onKeyDown(int keyCode, KeyEvent event)
 
{
 
  // 得到编辑器对象
 
   editor = getSharedPreferences(FILENAME, MODE_WORLD_WRITEABLE).edit();
 
  if(keyCode==KeyEvent.KEYCODE_BACK)
 
  {
 
   String server=et_server.getText().toString();
 
   String backup=et_backup.getText().toString();
 
   String upgrade=et_upgrade.getText().toString();
 
   editor.putString("server", server);
 
   editor.putString("backup", backup);
 
   editor.putString("upgrade", upgrade);
 
   editor.commit();
 
  }
 
  return super.onKeyDown(keyCode, event);
 
}
 

 第二种方法， if class extends frame

package com.android.settings;
 
import java.io.BufferedReader;
 
import java.io.FileReader;
 
import java.io.IOException;
 
import java.util.regex.Matcher;
 
import java.util.regex.Pattern;
 
import android.app.Fragment;
 
import android.content.Context;
 
import android.content.SharedPreferences;
 
import android.content.SharedPreferences.Editor;
 
import android.os.Build;
 
import android.os.Bundle;
 
import android.os.SystemProperties;
 
import android.util.Log;
 
import android.view.LayoutInflater;
 
import android.view.View;
 
import android.view.View.OnClickListener;
 
import android.view.ViewGroup;
 
import android.widget.Button;
 
import android.widget.EditText;
 
import android.widget.TextView;
 
public class JumpTvSettings extends Fragment implements OnClickListener
 
{
 
    private EditText et_server, et_backup, et_upgrade;
 
    private TextView tv_show_version, tv_show_mac;
 
    private Editor editor;
 
    private Button btn;
 
    
    private static final String TAG = "JumpTvSettings_mac";
 
    private static final String LOG_TAG="jumTv_Settings_version";
 
    
     private SharedPreferences mPrefs;
 
    // 要存储的文件名
 
    private static final String FILENAME = "filename_jumpTv";
 
    
    private static final  String CONFIG_PATH = "/sys/class/efuse/mac";
 
    private static final String FILENAME_PROC_VERSION = "/proc/version";
 
    
    private static final String KEY_FIRMWARE_VERSION = "firmware_version";
 
    
    @Override
 
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
 
            Bundle savedInstanceState)
 
    {
 
        View v=inflater.inflate(R.layout.jump_page, container, false);
 
        et_server = (EditText)v.findViewById(R.id.edit_server);
 
        et_backup = (EditText)v.findViewById(R.id.edit_backup);
 
        et_upgrade = (EditText)v.findViewById(R.id.edit_upgrade);
 
        btn=(Button)v.findViewById(R.id.btn_submit);
 
        btn.setOnClickListener(this);
 
        et_upgrade = (EditText)v.findViewById(R.id.edit_upgrade);
 
                                                tv_show_version = (TextView)v.findViewById(R.id.txt_show_version);
 
         tv_show_mac = (TextView)v.findViewById(R.id.txt_show_mac);
 
        mPrefs =  getActivity().getSharedPreferences(FILENAME, Context.MODE_WORLD_READABLE);
 
          String r_server = mPrefs.getString("server", "");
 
          String r_backup = mPrefs.getString("backup", "");
 
          String r_upgrade= mPrefs.getString("upgrade", "");
 
          et_server.setText(r_server);
 
          et_backup.setText(r_backup);
 
          et_upgrade.setText(r_upgrade);
 
            tv_show_mac.setText(new StringBuilder(this.getEthMacfromEfuse()).toString());
 
            tv_show_version.setText(Build.VERSION.RELEASE);
 
            tv_show_version.setEnabled(true);
 
         return v;
 
    }
 

     /**
 
         * Reads a line from the specified file.
 
         * @param filename the file to read from
 
         * [url=home.php?mod=space&uid=7300]@return[/url] the first line, if any.
 
         * @throws IOException if the file couldn't be read
 
         */
 
        private String readLine(String filename) throws IOException {
 
            BufferedReader reader = new BufferedReader(new FileReader(filename), 256);
 
            try {
 
                return reader.readLine();
 
            } finally {
 
                reader.close();
 
            }
 
        }
 
    private String getFormattedKernelVersion() {
 
        String procVersionStr;
 
        try {
 
            procVersionStr = readLine(FILENAME_PROC_VERSION);
 
            final String PROC_VERSION_REGEX =
 
                "[url=file://w+//s][color=#0066cc]\\w+\\s[/color][/url]+" + /* ignore: Linux */
 
                "[url=file://w+//s][color=#0066cc]\\w+\\s[/color][/url]+" + /* ignore: version */
 
                "([^\\s]+)\\s+" + /* group 1: 2.6.22-omap1 */
 
                "错误！超链接引用无效。" + /* group 2: ([url=mailto:xxxxxx@xxxxx.constant][color=#0066cc]xxxxxx@xxxxx.constant[/color][/url]) */
 
                "错误！超链接引用无效。" + /* ignore: (gcc ..) */
 
                "([^\\s]+)\\s+" + /* group 3: #26 */
 
                "(?:PREEMPT\\s+)?" + /* ignore: PREEMPT (optional) */
 
                "(.+)"; /* group 4: date */
 
            Pattern p = Pattern.compile(PROC_VERSION_REGEX);
 
            Matcher m = p.matcher(procVersionStr);
 
            if (!m.matches()) {
 
                Log.e(LOG_TAG, "Regex did not match on /proc/version: " + procVersionStr);
 
                return "Unavailable";
 
            } else if (m.groupCount() < 4) {
 
                Log.e(LOG_TAG, "Regex match on /proc/version only returned " + m.groupCount()
 
                        + " groups");
 
                return "Unavailable";
 
            } else {
 
                return (new StringBuilder(m.group(1)).append("\n").append(
 
                        m.group(2)).append(" ").append(m.group(3)).append("\n")
 
                        .append(m.group(4))).toString();
 
            }
 
        } catch (IOException e) {
 
            Log.e(LOG_TAG,
 
                "IO Exception when getting kernel version for Device Info screen",
 
                e);
 
            return "Unavailable";
 
        }
 
    }
 
    // 获取mac地址
 
    private String getEthMacfromEfuse()
 
    {
 
        String sn = null;
 
        try
 
        {
 
            BufferedReader reader = new BufferedReader(new FileReader(CONFIG_PATH), 12);
 
            try
 
            {
 
                sn = reader.readLine();
 
            }finally
 
            {
 
                reader.close();
 
            }
 
            Log.d(TAG, "/sys/class/efuse/mac: " + sn);
 
            if (sn.equals("00:00:00:00:00:00"))
 
                return SystemProperties.get("ubootenv.var.ethaddr",getString(R.string.status_unavailable));
 
            else
 
                return sn;
 
        } catch (IOException e)
 
        {
 
            Log.e(TAG,"IO Exception when getting serial number for Device Info screen",e);
 
            // return "null";
 
            return SystemProperties.get("ubootenv.var.ethaddr",getString(R.string.status_unavailable));
 
        }
 
    }
 
    
@Override
 
  public void onPause()
 
  {
 
      //界面失去控制权时保存数据
 
      editor =getActivity().getSharedPreferences(FILENAME, Context.MODE_WORLD_WRITEABLE).edit();
 
      String server = et_server.getText().toString();
 
      String backup = et_backup.getText().toString();
 
      String upgrade = et_upgrade.getText().toString();
 
      editor.putString("server", server);
 
      editor.putString("backup", backup);
 
      editor.putString("upgrade", upgrade);
 
      editor.commit();
 
          super.onPause();
 
  }
 
    
    public void onSaveInstanceState(Bundle outState) {
 
        //界面销毁之前保存数据
 
        super.onSaveInstanceState(outState);
 
        outState.putString("server", et_server.getText().toString());
 
        outState.putString("server", et_backup.getText().toString());
 
        outState.putString("server", et_upgrade.getText().toString());
 
    }
 
}
 

/*
 
* 取文件中的值
 
*/
 
   public void onCreate(Bundle savedInstanceState) {
 
        super.onCreate(savedInstanceState);
 
        Context context = null;
 
        try {
 
            context = createPackageContext("com.android.settings", Context.CONTEXT_IGNORE_SECURITY);
 
        } catch (NameNotFoundException e) {
 
            // TODO Auto-generated catch block
 
            e.printStackTrace();
 
        }
 
        SharedPreferences settings = context.getSharedPreferences("filename_jumpTv",
 
                Context.MODE_WORLD_READABLE);
 
        String server = settings.getString("server", " ");
 
        String backup = settings.getString("backup", " ");
 
        Log.d("SharedPreferences", "server:" + server + ", backup:" + backup);
 
        Log.d("SharedPreferences", "获取数据成功");
 
        Uri server_uri = Uri.parse(server);
 
        Uri backup_uri = Uri.parse(backup);
 
        Intent intent1 = new Intent(Intent.ACTION_VIEW, server_uri);
 
        Intent intent2 = new Intent(Intent.ACTION_VIEW, backup_uri);
 
        startActivity(intent1);
 
        startActivity(intent2);
 
    }