factor the SharedPreferences usage into its own Prefs class

src/org/galexander/sshd/Prefs.java

@@ -0,0 +1,35 @@
+package org.galexander.sshd;
+
+import android.content.SharedPreferences;
+import android.content.Context;
+import android.preference.PreferenceManager;
+
+public class Prefs {
+	private static SharedPreferences pref = null;
+
+	public static void init(Context c) {
+		if (pref == null) {
+			pref = PreferenceManager.getDefaultSharedPreferences(c);
+		}
+	}
+
+	public static boolean get_onboot() {
+		return pref.getBoolean("onboot", false);
+	}
+	public static int get_port() {
+		return pref.getInt("port", 2222);
+	}
+	public static String get_path() {
+		return pref.getString("path", "/sdcard/ssh");
+	}
+	public static String get_shell() {
+		return pref.getString("shell", "/system/bin/sh -l");
+	}
+	public static String get_home() {
+		return pref.getString("home", "/sdcard/ssh");
+	}
+
+	public static SharedPreferences.Editor edit() {
+		return pref.edit();
+	}
+};

src/org/galexander/sshd/SimpleSSHD.java

@@ -19,6 +19,7 @@ public class SimpleSSHD extends Activity
 	public void onCreate(Bundle savedInstanceState)
 	{
 		super.onCreate(savedInstanceState);
+		Prefs.init(this);
 		setContentView(R.layout.main);
 		onboot_view = (CheckBox)findViewById(R.id.onboot);
 		port_view = (EditText)findViewById(R.id.port);
@@ -61,48 +62,31 @@ public class SimpleSSHD extends Activity
 	}
 
 	private void load_prefs() {
-		SharedPreferences prefs = getPreferences(Context.MODE_PRIVATE);
-		onboot_view.setChecked(get_onboot(prefs));
-		port_view.setText(Integer.toString(get_port(prefs)));
-		path_view.setText(get_path(prefs));
-		shell_view.setText(get_shell(prefs));
-		home_view.setText(get_home(prefs));
+		onboot_view.setChecked(Prefs.get_onboot());
+		port_view.setText(Integer.toString(Prefs.get_port()));
+		path_view.setText(Prefs.get_path());
+		shell_view.setText(Prefs.get_shell());
+		home_view.setText(Prefs.get_home());
 	}
 
 	private void save_prefs() {
-		SharedPreferences prefs = getPreferences(Context.MODE_PRIVATE);
-		SharedPreferences.Editor edit = prefs.edit();
+		SharedPreferences.Editor edit = Prefs.edit();
 		boolean b = onboot_view.isChecked();
-		if (b != get_onboot(prefs)) { edit.putBoolean("onboot", b); }
+		if (b != Prefs.get_onboot()) { edit.putBoolean("onboot", b); }
 		int i;
 		try {
 			i = Integer.valueOf(port_view.getText().toString());
 		} catch (Exception e) {
 			i = 0;
 		}
-		if (i != get_port(prefs)) { edit.putInt("port", i); }
+		if (i != Prefs.get_port()) { edit.putInt("port", i); }
 		String s = path_view.getText().toString();
-		if (!s.equals(get_path(prefs))) { edit.putString("path", s); }
+		if (!s.equals(Prefs.get_path())) { edit.putString("path", s); }
 		s = shell_view.getText().toString();
-		if (!s.equals(get_shell(prefs))) { edit.putString("shell", s); }
+		if (!s.equals(Prefs.get_shell())) { edit.putString("shell", s); }
 		s = home_view.getText().toString();
-		if (!s.equals(get_home(prefs))) { edit.putString("home", s); }
+		if (!s.equals(Prefs.get_home())) { edit.putString("home", s); }
 		edit.commit();
 	}
 
-	public static boolean get_onboot(SharedPreferences p) {
-		return p.getBoolean("onboot", false);
-	}
-	public static int get_port(SharedPreferences p) {
-		return p.getInt("port", 2222);
-	}
-	public static String get_path(SharedPreferences p) {
-		return p.getString("path", "/sdcard/ssh");
-	}
-	public static String get_shell(SharedPreferences p) {
-		return p.getString("shell", "/system/bin/sh -l");
-	}
-	public static String get_home(SharedPreferences p) {
-		return p.getString("home", "/sdcard/ssh");
-	}
 }

src/org/galexander/sshd/SimpleSSHDService.java

@@ -2,15 +2,18 @@ package org.galexander.sshd;
 
 import android.app.Service;
 import android.content.Intent;
-import android.content.SharedPreferences;
 import android.content.Context;
 import android.os.IBinder;
-import android.preference.PreferenceManager;
 
 public class SimpleSSHDService extends Service {
 	public static int sshd_pid = 0;
 	public static SimpleSSHD activity = null;
 
+	public void onCreate() {
+		super.onCreate();
+		Prefs.init(this);
+	}
+
 	public int onStartCommand(Intent intent, int flags, int startId) {
 		if ((intent == null) ||
 		    (!intent.getBooleanExtra("stop", false))) {
@@ -46,14 +49,12 @@ public class SimpleSSHDService extends Service {
 	}
 
 	private void do_start() {
-		SharedPreferences p = PreferenceManager.
-				getDefaultSharedPreferences(this);
 		if (is_started()) {
 			stop_sshd();
 		}
-		start_sshd(SimpleSSHD.get_port(p),
-			SimpleSSHD.get_path(p), SimpleSSHD.get_shell(p),
-			SimpleSSHD.get_home(p));
+		start_sshd(Prefs.get_port(),
+			Prefs.get_path(), Prefs.get_shell(),
+			Prefs.get_home());
 
 		if (sshd_pid != 0) {
 			final int pid = sshd_pid;