src/at/sprinternet/mvnoroaming/ExecuteAsRoot.java

@@ -0,0 +1,22 @@
+package at.sprinternet.mvnoroaming;
+
+import java.io.IOException;
+
+import android.util.Log;
+
+public class ExecuteAsRoot {
+	public static boolean exec(String command) {
+		try {
+			Process process = Runtime.getRuntime().exec(
+					new String[] { "su", "-c", command });
+			process.waitFor();			
+		} catch (IOException ex) {
+			Log.w("ROOT", "Can't get root access", ex);
+			return false;
+		} catch (InterruptedException ex) {
+			Log.w("ROOT", "Can't get root access", ex);
+			return false;
+		}
+		return true;
+	}
+}

src/at/sprinternet/mvnoroaming/MVNORoamingStatusChanger.java

@@ -0,0 +1,73 @@
+package at.sprinternet.mvnoroaming;
+
+import android.os.Bundle;
+import android.app.Activity;
+import android.content.Context;
+import android.content.SharedPreferences;
+import android.util.Log;
+import android.view.View;
+import android.widget.Button;
+import android.widget.CompoundButton;
+import android.widget.EditText;
+import android.widget.Switch;
+import android.widget.Toast;
+
+public class MVNORoamingStatusChanger extends Activity {
+
+	private static final String PROVIDER_KEY = "mvno_provider";
+	private static final String REBOOTSERVICE_KEY = "mvno_setonreboot";
+	private static final String TAG = "MVNOroaming";
+	
+	private EditText editTextProvider;
+	private Button buttonUpdate;
+	private Switch switchReboot;
+	
+	private SharedPreferences prefs;
+	
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_mvno);
+        
+        editTextProvider = (EditText) findViewById(R.id.editTextProvider);
+        buttonUpdate = (Button) findViewById(R.id.buttonUpdate);
+        switchReboot = (Switch) findViewById(R.id.switchReboot);
+        prefs = this.getSharedPreferences("at.sprinternet.mvnoroaming", Context.MODE_PRIVATE);
+        
+        //set listeners
+        switchReboot.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
+			@Override
+			public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
+			    Log.v(TAG, "Switch State="+isChecked);
+			    prefs.edit().putBoolean(REBOOTSERVICE_KEY, isChecked).commit();
+			}       
+		
+		});
+        
+        buttonUpdate.setOnClickListener(new Button.OnClickListener() {
+			@Override
+			public void onClick(View v) {
+				Log.v(TAG, "Button clicked");
+				prefs.edit().putString(PROVIDER_KEY, editTextProvider.getText().toString()).commit();
+				Boolean done = ExecuteAsRoot.exec("setprop gsm.sim.operator.alpha " + editTextProvider.getText().toString());
+				
+				if(!done) {
+					Toast.makeText(getApplicationContext(), "Setting Service-Provider failed!", Toast.LENGTH_LONG).show();
+				} else {
+					Toast.makeText(getApplicationContext(), "Updated Service-Provider!", Toast.LENGTH_LONG).show();
+				}
+			}
+		});
+        
+        
+        //init gui
+        String currentProvider = "";
+        Boolean setOnReboot = true;
+        
+        currentProvider = prefs.getString(PROVIDER_KEY, "");  // default: empty
+        setOnReboot = prefs.getBoolean(REBOOTSERVICE_KEY, true);
+        
+        editTextProvider.setText(currentProvider);
+        switchReboot.setChecked(setOnReboot);
+    }
+}

src/at/sprinternet/mvnoroaming/RebootService.java

@@ -0,0 +1,54 @@
+package at.sprinternet.mvnoroaming;
+
+import android.app.Service;
+import android.content.Context;
+import android.content.Intent;
+import android.content.SharedPreferences;
+import android.os.IBinder;
+import android.util.Log;
+import android.widget.Toast;
+
+public class RebootService extends Service{
+	
+	private static final String PROVIDER_KEY = "mvno_provider";
+	private static final String REBOOTSERVICE_KEY = "mvno_setonreboot";
+	private static final String TAG = "MVNOroaming";
+	
+	private SharedPreferences prefs;
+
+    @Override  
+    public void onCreate() {  
+        super.onCreate();
+        
+        prefs = this.getSharedPreferences("at.sprinternet.mvnoroaming", Context.MODE_PRIVATE);
+    }  
+
+    @Override  
+    public int onStartCommand(Intent intent, int flags, int startId) {
+        String currentProvider = prefs.getString(PROVIDER_KEY, null);
+        Boolean runOnReboot = prefs.getBoolean(REBOOTSERVICE_KEY, true);
+        
+        if(runOnReboot && currentProvider != null && "".compareTo(currentProvider) != 0 ) {
+			Boolean done = ExecuteAsRoot.exec("setprop gsm.sim.operator.alpha " + currentProvider);
+			Log.v(TAG, "Setprop result:" + done);
+			
+			if(!done) {
+				Toast.makeText(getApplicationContext(), "Setting Service-Provider failed!", Toast.LENGTH_LONG).show();
+			} else {
+				Toast.makeText(getApplicationContext(), "Updated Service-Provider!", Toast.LENGTH_LONG).show();
+			}
+        }
+        return Service.START_STICKY;  
+    }  
+
+    @Override
+    public void onDestroy() {
+        super.onDestroy();
+        Log.v(TAG, "Service destroyed");
+    }
+
+    @Override  
+    public IBinder onBind(Intent arg0) {  
+        return null;  
+    }  
+}

src/at/sprinternet/mvnoroaming/RebootServiceReceiver.java

@@ -0,0 +1,16 @@
+package at.sprinternet.mvnoroaming;
+
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.Intent;
+
+public class RebootServiceReceiver extends BroadcastReceiver {
+
+	@Override
+	public void onReceive(Context context, Intent intent) {
+		if ("android.intent.action.BOOT_COMPLETED".equals(intent.getAction())) {
+            Intent serviceIntent = new Intent(context, RebootService.class);
+            context.startService(serviceIntent);
+        }
+	}
+}