Android 自动生成的文件
SAX解析本地xml文件在android中生成xml文件例子
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); }