AirplaceLogger源代码解析

将源代码添加进Eclipse中，右键-->Import-->Existing Projects into Workspace-->选择AirplaceLogger源代码文件夹即可导入软件中。

按包package可分为6个部分：cy.com.airplacersslogger(接收点信号强度录入)、airplacersslogger.FileBrowser(接收点信号录入.文件浏览)、Uploading(上传)、util(总)、zoom(缩放)和Wifi(局域网无线信号)

一、airplacersslogger(接收点信号强度录入)

1. LogRecord.java

package cy.com.airplacersslogger;

public class LogRecord { //LogRecord日志记录类

private long ts;
private double lng;
private double lat;
private String bssid;
private int rss;

public LogRecord(long ts, double lat, double lng, String bssid, int rss) { //构造函数
super();
this.ts = ts;
this.lng = lng;
this.lat = lat;
this.bssid = bssid;
this.rss = rss;
}

public String toString() { //转String
String str = new String();
str = String.valueOf(ts) + " " + String.valueOf(lat) + " " + String.valueOf(lng) + " " + String.valueOf(bssid) + " " + String.valueOf(rss)
+ "\n";
return str;
}

}

2. Prefs.java

package cy.com.airplacersslogger;

import android.app.Activity;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.SharedPreferences.OnSharedPreferenceChangeListener;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.preference.Preference;
import android.preference.PreferenceActivity;
import android.preference.Preference.OnPreferenceClickListener;
import android.provider.MediaStore.MediaColumns;
import cy.com.airplacersslogger.R;
import cy.com.airplacersslogger.FileBrowser.AndroidFileBrowser;

public class Prefs extends PreferenceActivity implements OnSharedPreferenceChangeListener {

    private static final int SELECT_IMAGE = 7;
    private static final int SELECT_PATH = 8;
    private static final int SELECT_FILE = 9;

    @Override
    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

            getPreferenceManager().setSharedPreferencesName(RSSLogger.SHARED_PREFS_NAME);

        addPreferencesFromResource(R.xml.preferences);
        getPreferenceManager().getSharedPreferences().registerOnSharedPreferenceChangeListener(this);

            getPreferenceManager().findPreference("image_custom").setOnPreferenceClickListener(new OnPreferenceClickListener() {

                @Override
                public boolean onPreferenceClick(Preference preference) {
                    Intent i = new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
                    i.setType("image/*");
                    startActivityForResult(i, SELECT_IMAGE);
                    return true;
                }
            });

        getPreferenceManager().findPreference("folder_browser").setOnPreferenceClickListener(new OnPreferenceClickListener() {

            @Override
            public boolean onPreferenceClick(Preference preference) {

                Intent i = new Intent(getBaseContext(), AndroidFileBrowser.class);

                Bundle extras = new Bundle();
                extras.putBoolean("to_Browse", true);

                i.putExtras(extras);

                startActivityForResult(i, SELECT_PATH);
                return true;
            }
        });

        getPreferenceManager().findPreference("upload_file").setOnPreferenceClickListener(new OnPreferenceClickListener() {

            @Override
            public boolean onPreferenceClick(Preference preference) {

                Intent i = new Intent(getBaseContext(), AndroidFileBrowser.class);

                Bundle extras = new Bundle();
                extras.putBoolean("to_Browse", false);

                i.putExtras(extras);

                startActivityForResult(i, SELECT_FILE);
                return true;
            }
        });
    }

    @Override
    public void onActivityResult(int requestCode, int resultCode, Intent data) {

        super.onActivityResult(requestCode, resultCode, data);

        SharedPreferences customSharedPreference;

            customSharedPreference = getSharedPreferences(RSSLogger.SHARED_PREFS_NAME, MODE_PRIVATE);

        switch (requestCode) {

        case SELECT_IMAGE:
            if (resultCode == Activity.RESULT_OK) {
                Uri selectedImage = data.getData();
                String RealPath;
                SharedPreferences.Editor editor = customSharedPreference.edit();
                RealPath = getRealPathFromURI(selectedImage);
                editor.putString("image_custom", RealPath);
                editor.commit();
            }
            break;
        case SELECT_PATH:
            if (resultCode == Activity.RESULT_OK) {
                Uri selectedFolder = data.getData();
                String path = selectedFolder.toString();
                SharedPreferences.Editor editor = customSharedPreference.edit();
                editor.putString("folder_browser", path);
                editor.commit();
            }
            break;
        case SELECT_FILE:
            if (resultCode == Activity.RESULT_OK) {
                Uri selectedFile = data.getData();
                String file = selectedFile.toString();
                SharedPreferences.Editor editor = customSharedPreference.edit();
                editor.putString("upload_file", file);
                editor.commit();
            }
            break;
        }
    }

    public String getRealPathFromURI(Uri contentUri) {
        String[] proj = { MediaColumns.DATA };
        Cursor cursor = managedQuery(contentUri, proj, null, null, null);
        int column_index = cursor.getColumnIndexOrThrow(MediaColumns.DATA);
        cursor.moveToFirst();
        return cursor.getString(column_index);
    }

    @Override
    protected void onResume() {
        super.onResume();
        // Set up a listener whenever a key changes
        getPreferenceScreen().getSharedPreferences().registerOnSharedPreferenceChangeListener(this);
    }

    @Override
    protected void onDestroy() {
        // Unregister the listener whenever a key changes
        getPreferenceManager().getSharedPreferences().unregisterOnSharedPreferenceChangeListener(this);
        super.onDestroy();
    }

    @Override
    protected void onPause() {
        super.onPause();
        // Unregister the listener whenever a key changes
        getPreferenceScreen().getSharedPreferences().unregisterOnSharedPreferenceChangeListener(this);
    }

    @Override
    public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key) {
    }

}

3. RSSLogger.java