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);     }

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