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:[email protected]][color=#0066cc][email protected][/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);         }