gistfile1.java

package com.example.olologin.qudah;

import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.pm.PackageManager;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.preference.CheckBoxPreference;
import android.preference.Preference;
import android.preference.PreferenceActivity;
import android.preference.PreferenceManager;
import android.provider.MediaStore;
import android.util.Log;
import android.widget.DialerFilter;

public class SettingsActivity extends PreferenceActivity implements SharedPreferences.OnSharedPreferenceChangeListener {
    private static final String LOG_TAG = "SettingsActivity";
    private static final int PICK_AUDIO = 1;
    private SharedPreferences settings;

    @Override
    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);
        settings = PreferenceManager.getDefaultSharedPreferences(this);
        addPreferencesFromResource(R.xml.pref);
        Preference prefereces=findPreference("select_audio");
        prefereces.setOnPreferenceClickListener (new Preference.OnPreferenceClickListener(){
            public boolean onPreferenceClick(Preference preference){
                Intent intent = new Intent();
                intent.setType("audio/*");
                intent.setAction(Intent.ACTION_GET_CONTENT);
                startActivityForResult(Intent.createChooser(intent, "Select mp3 file"), PICK_AUDIO);
                return true;
            }
        });
    }

    @Override
    protected void onResume() {
        super.onResume();
        settings.registerOnSharedPreferenceChangeListener(this);
        //PreferenceManager.setDefaultValues(this, R.xml.pref, false);
    }

    @Override
    protected void onPause() {
        super.onPause();
        settings.unregisterOnSharedPreferenceChangeListener(this);
    }

    @Override
    public void onSharedPreferenceChanged(SharedPreferences sharedPreferences,
                                          String key) {
        if (key.equals("isAlarmEnabled")) {
            //if(sharedPreferences.getBoolean("isAlarmEnabled", false))

        } else if (key.equals("isIconHidden")) {
            PackageManager p = getPackageManager();
            if(sharedPreferences.getBoolean("isIconHidden", false))
            {
                ComponentName componentName = new ComponentName(this, com.example.olologin.qudah.SettingsActivity.class); // activity which is first time open in manifiest file which is declare as <category android:name="android.intent.category.LAUNCHER" />
                p.setComponentEnabledSetting(componentName,PackageManager.COMPONENT_ENABLED_STATE_DISABLED, PackageManager.DONT_KILL_APP);
            }
            else {
                ComponentName componentName = new ComponentName(this, com.example.olologin.qudah.SettingsActivity.class);
                p.setComponentEnabledSetting(componentName, PackageManager.COMPONENT_ENABLED_STATE_ENABLED, PackageManager.DONT_KILL_APP);
            }
        } else {
            return;
        }
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent audioReturnedIntent) {
        super.onActivityResult(requestCode, resultCode, audioReturnedIntent);

        if(requestCode != PICK_AUDIO)
            Log.d(LOG_TAG, "Unknown resultcode");
        switch (resultCode) {
            case RESULT_OK: {
                Uri selectedAudio = audioReturnedIntent.getData();
                Log.d(LOG_TAG, "Audio was " + settings.getString("select_audio", null));
                Log.d(LOG_TAG, "Audio choosen " + selectedAudio.toString());
                settings.edit().putString("select_audio", selectedAudio.toString()).commit();
                Log.d(LOG_TAG, "Audio path now " + settings.getString("select_audio", null));
                break;
            }
            case RESULT_CANCELED :
                Log.d(LOG_TAG, "Audio canceled! ");
                break;
            default:
                Log.d(LOG_TAG, "Another problem");
        }
    }
}