Android : Media.release() in cordova's Media plugin

How does Media.release() work. Looking at the docs it feels that you have to use it like this:

MediaService.loadMedia('sounds/connection-error.wav').then(function(media){
    media.play();
    media.release();
});

But I googled enough to know that is wrong. We have to explicitly release the core instances on Android.

But how to do that? If I have 8 views in my app and if I play a sound file on each of those views does that count as 8 core instances being used? And can I go back to say view number 1 and again play the sound associated with that view? If so, would that count as a 9th instances ?

Straight away calling media.release() just like above does not play any sound at all.

Android : parse color VS parse int

I have a problem changing the background color randomly: first I try to use parseColor In the Colorclass:

public class Colors {

   public String[] colors = {
        "#39add1", // light blue
        "#3079ab", // dark blue
        "#c25975" // mauve
};

public int getcolor() {
    Random randomGenerator = new Random();
    String color = "";

    int randomNumber = randomGenerator.nextInt(3);

    color = colors[randomNumber];
    int colorAsInt = Color.parseColor(color);
    return colorAsInt;
}

}

And in the Activity class:

View.OnClickListener listener = new View.OnClickListener() {
                @Override
                public void onClick(View view) {
                    int color = mColors.getcolor();
                    relativeLayout.setBackgroundColor(color);





        }
    };

It works perfectly: but when I try to use String for return type of getcolor and use parse int in the activity class , when i run the app it gives me an error :Unfortunately app has stopped.

the color class:

public String getcolor() {
    Random randomGenerator = new Random();
    String color = "";

    int randomNumber = randomGenerator.nextInt(3);

    color = colors[randomNumber];
    return color;
}

And the activity class:

 View.OnClickListener listener = new View.OnClickListener() {
                @Override
                public void onClick(View view) {
                    String color = mColors.getcolor();
                    relativeLayout.setBackgroundColor(Integer.parseInt(color));





        }
    };

why this problem happens?

Android : NoClassDefFoundError when running Android app built with Maven

I'm getting a NoClassDefFoundError for a class that exists in my Android App. I'm building with maven and the class that can't be found is LruBitmapCache.java, an implementation of the Volley ImageCache which I have written inside my android project:

public class LruBitmapCache extends LruCache<String, Bitmap> implements ImageCache
{
    public static int getDefaultLruCacheSize()
    {
        final int maxMemory = (int) (Runtime.getRuntime().maxMemory() / 1024);
        final int cacheSize = maxMemory / 8;

        return cacheSize;
    }

    public LruBitmapCache()
    {
        this(getDefaultLruCacheSize());
    }

    public LruBitmapCache(int sizeInKiloBytes)
    {
        super(sizeInKiloBytes);
    }

    @Override
    protected int sizeOf(String key, Bitmap value)
    {
        return value.getRowBytes() * value.getHeight() / 1024;
    }

    @Override
    public Bitmap getBitmap(String url)
    {
        return get(url);
    }

    @Override
    public void putBitmap(String url, Bitmap bitmap)
    {
        put(url, bitmap);
    }
}

My pom.xml is as follows

<project xmlns="http://maven.apache.org/POM/4.0.0"     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0     http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <parent>
        <groupId>com.x.y</groupId>
        <artifactId>parent</artifactId>
        <version>0.0.1-SNAPSHOT</version>
        <relativePath>../../parent</relativePath>
    </parent>

    <modelVersion>4.0.0</modelVersion>
    <artifactId>android-project</artifactId>
    <packaging>apk</packaging>

    <build>
        <plugins>
            <plugin>
                <groupId>com.jayway.maven.plugins.android.generation2</groupId>
                <artifactId>android-maven-plugin</artifactId>
                <version>3.8.2</version>
                <configuration>
                    <sdk>
                        <platform>19</platform>
                    </sdk>
                    <deleteConflictingFiles>true</deleteConflictingFiles>
                    <undeployBeforeDeploy>false</undeployBeforeDeploy>
                    <device>usb</device>
                </configuration>
                <extensions>true</extensions>
            </plugin>

            <plugin>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.1</version>
                <configuration>
                    <source>1.7</source>
                    <target>1.7</target>
                </configuration>
            </plugin>
        </plugins>
    </build>

    <dependencies>
        <dependency>
            <groupId>android</groupId>
            <artifactId>android</artifactId>
            <version>4.4.2_r3</version>
            <scope>provided</scope>
        </dependency>

        <dependency>
            <groupId>com.google.android</groupId>
            <artifactId>support-v4</artifactId>
            <version>r7</version>
            <scope>provided</scope>
        </dependency>

        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-lang3</artifactId>
            <version>3.1</version>
        </dependency>

        <dependency>
            <groupId>org.codehaus.jackson</groupId>
            <artifactId>jackson-mapper-asl</artifactId>
            <version>1.9.12</version>
        </dependency>

        <dependency>
            <groupId>com.googlecode.androidannotations</groupId>
            <artifactId>androidannotations</artifactId>
            <version>2.7.1</version>
        </dependency>

        <dependency>
            <groupId>com.mcxiaoke.volley</groupId>
            <artifactId>library</artifactId>
            <version>1.0.6</version>
        </dependency>

        <dependency>
            <groupId>fr.avianey</groupId>
            <artifactId>facebook-android-api</artifactId>
            <version>3.17.1</version>
        </dependency>

        <dependency>
            <groupId>org.twitter4j</groupId>
            <artifactId>twitter4j-core</artifactId>
            <version>4.0.2</version>
        </dependency>

    </dependencies>
</project>

I'm building and deploying the app with "mvn install android:deploy", which successfully deploys the app to the device, but when I try and open the application I get the NoClassDefFoundError (since some application code attempts to initialize the LruBitmapCache). I had assumed it might have been because the Volley dependency wasn't being included in the classes, but I'm not 100% sure how the dex classes work. Does anyone have any idea why this could be happening or has anyone had this before? Faulty classes? Dependency conflict? Any help is appreciated.

Android : Trouble with listview in slide menu

I have a slide menu in my app and its work very good but i have a list view in slide menu only work in MainActivity and it is not work in other Activities but i copy all of codes about slide menu from MainActivity and it is same with other activities but OnItemClickListener Only work in MainActivity. Here is codes:

slidelist.setOnItemClickListener(new OnItemClickListener(){

@Override
public void onItemClick(AdapterView<?> parent, View view, int position,
        long id) {
    switch(position){
    case 0:
         DL.closeDrawers();
    break;
    case 1:
        startActivity(new Intent(MainActivity.this, Settings.class));
        finish();
    break;
    case 2:
        startActivity(new Intent(MainActivity.this, Email.class));  
    break;
    case 3:
        Intent goToMarket = new Intent(Intent.ACTION_VIEW)
        .setData(Uri.parse("http://cafebazaar.ir/app/com.seyedmehdi.scarystories/?l=fa"));
        startActivity(goToMarket);
    break;
    case 4:
            startActivity(new Intent(MainActivity.this, Manba.class));
    break;
    default:
    break;
    }

}
});

Please help. Sorry from my bad English.

Android : android.utils.Base64.encode gets different value

When I try this:

map.put("password1", Base64.encode("111111".getBytes(),Base64.DEFAULT));
map.put("password2", Base64.encode("111111".getBytes(),Base64.DEFAULT));
map.put("password3", Base64.encode("111111".getBytes(),Base64.DEFAULT));

I got different value of password1,password2 and password3:

password1:[B@5368aecc

password2:[B@536e9ea0

password3:[B@536c0dec

Is it should be the same value? Thanks in advance.

Android : Automating Android build process

I have to do a very laborious task on a regular basis and am looking for a way to automate the process. I have to Clone 2 git repos, open in eclipse, add one repo as a dependency of the other,c hange package names, refactor, replace the res folder with another and build. I want to write a script or something that will automate the whole process. Is this possible? If so where do I start?

Android : getSupportLoaderManager().restartLoader(0, data, this);

restartLoader(0, data, this);

while using restartLoader like above I got an error:

The method restartLoader(int, Bundle, LoaderManager.LoaderCallbacks) in the type LoaderManager is not applicable for the arguments (int, Bundle, MainActivity).

Here is my code:

    private void doSearch(String query){
        Bundle data = new Bundle();
        data.putString("query", query);
        getSupportLoaderManager().restartLoader(0, data, this);
    }

    private void getPlace(String query){
        Bundle data = new Bundle();
        data.putString("query", query);
        getSupportLoaderManager().restartLoader(1, data, this);
    }