com.jean.farCam.SettingsActivity.java Source code

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Here is the source code for com.jean.farCam.SettingsActivity.java

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//    Copyright 2013 Giancarlo Todone
//
//    Licensed under the Apache License, Version 2.0 (the "License");
//    you may not use this file except in compliance with the License.
//    You may obtain a copy of the License at
//
//       http://www.apache.org/licenses/LICENSE-2.0
//
//    Unless required by applicable law or agreed to in writing, software
//    distributed under the License is distributed on an "AS IS" BASIS,
//    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
//    See the License for the specific language governing permissions and
//    limitations under the License.

package com.jean.farCam;

import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.preference.Preference;
import android.preference.PreferenceActivity;
import android.preference.PreferenceManager;
import android.widget.Toast;
import com.jean.farCam.customUI.EditIntPreference;
import java.net.InetAddress;
import java.net.NetworkInterface;
import java.util.Collections;
import java.util.List;
import org.apache.http.conn.util.InetAddressUtils;

public class SettingsActivity extends PreferenceActivity {

    final int DEFAULT_X_RESOLUTION = 640;
    final int DEFAULT_Y_RESOLUTION = 480;
    final int DEFAULT_PORT = 1234;

    Preference ipPref = null;

    private Preference.OnPreferenceChangeListener onResolutionPreferenceChangedListener = new Preference.OnPreferenceChangeListener() {
        @Override
        public boolean onPreferenceChange(Preference preference, Object newValue) {
            String input = newValue.toString();
            try {
                int iInput = Integer.parseInt(input);

                if ((iInput > 0) && (iInput < 10000)) {
                    preference.setSummary(input + "");
                    return true;
                } else {
                    Toast.makeText(SettingsActivity.this, R.string.settings_error_resolution, Toast.LENGTH_SHORT)
                            .show();
                    return false;
                }
            } catch (Exception ex) {
                Toast.makeText(SettingsActivity.this, R.string.settings_error_resolution, Toast.LENGTH_SHORT)
                        .show();
                return false;
            }

        }
    };

    public void showPreference(boolean setListeners) {
        SharedPreferences settings = PreferenceManager.getDefaultSharedPreferences(SettingsActivity.this);
        SharedPreferences.Editor editor = settings.edit();

        // x resolution
        String key = getString(R.string.settings_key_x_resolution);
        EditIntPreference eip = (EditIntPreference) findPreference(key);
        int setting = settings.getInt(key, -1);
        if (setting < 0) {
            editor.putInt(key, DEFAULT_X_RESOLUTION);
            setting = DEFAULT_X_RESOLUTION;
        }
        eip.setSummary(setting + "");
        if (setListeners)
            eip.setOnPreferenceChangeListener(onResolutionPreferenceChangedListener);

        // y resolution
        key = getString(R.string.settings_key_y_resolution);
        eip = (EditIntPreference) findPreference(key);
        setting = settings.getInt(key, -1);
        if (setting < 0) {
            editor.putInt(key, DEFAULT_Y_RESOLUTION);
            setting = DEFAULT_Y_RESOLUTION;
        }
        eip.setSummary(setting + "");
        if (setListeners)
            eip.setOnPreferenceChangeListener(onResolutionPreferenceChangedListener);

        // port
        key = getString(R.string.settings_key_port);
        eip = (EditIntPreference) findPreference(key);
        setting = settings.getInt(key, -1);
        if (setting < 0) {
            editor.putInt(key, DEFAULT_PORT);
            setting = DEFAULT_PORT;
        }
        eip.setSummary(setting + "");
        if (setListeners)
            eip.setOnPreferenceChangeListener(onResolutionPreferenceChangedListener);

        if (setListeners) {
            key = getString(R.string.settings_key_ip);
            ipPref = (Preference) findPreference(key);
            ipPref.setTitle("IP: " + getIPAddress());
            ipPref.setOnPreferenceClickListener(onIpClickListener);
        }

        //...

        // Write default value to preference
        editor.commit();
    }

    private Preference.OnPreferenceClickListener onIpClickListener = new Preference.OnPreferenceClickListener() {

        public boolean onPreferenceClick(Preference preference) {

            ipPref.setTitle("IP: " + getIPAddress());

            return true;
        }
    };

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        addPreferencesFromResource(R.xml.settings);

        showPreference(true);
    }

    @Override
    public void onResume() {
        super.onResume();

        showPreference(false);
    }

    public static String getIPAddress() {
        try {
            List<NetworkInterface> interfaces = Collections.list(NetworkInterface.getNetworkInterfaces());
            for (NetworkInterface intf : interfaces) {
                List<InetAddress> addrs = Collections.list(intf.getInetAddresses());
                for (InetAddress addr : addrs) {
                    if (!addr.isLoopbackAddress()) {
                        String sAddr = addr.getHostAddress().toUpperCase();
                        if (InetAddressUtils.isIPv4Address(sAddr)) {
                            return sAddr;
                        }
                    }
                }
            }
        } catch (Exception ex) {
        }
        return "";
    }
}