I don't get why this ClassCastException occurs

Question

// Application ...
Intent i = new Intent();
i.putExtra(EXTRA_FILE_UPLOAD_URIS, mGalleryAdapter.getItems()); 

Uri[] getItems() { return mItems; }

// Service ...
int         


        

Answer 1

https://stackoverflow.com/a/8745966/72437 and https://stackoverflow.com/a/20073367/72437 have well explanation on why such crash happens.

https://stackoverflow.com/a/14866690/72437 also has a example on how we can workaround with this.

I would like to provide code examples, to help better understanding.

Let me demonstrate an example on why such incident fails sometimes.

An example to demonstrate why such crash happens

package javaapplication12;

/**
 *
 * @author yccheok
 */
public class JavaApplication12 {

    public static class Parcelable {

    }

    public static class Uri extends Parcelable {

    }

    public static Parcelable[] getParcelableArrayExtraDuringLowMemoryRestoration() {    
        // The Android system has no way to know it needs to create Uri[],
        // during low memory restoration process.

        Parcelable[] parcelables = new Parcelable[3];

        for (int i=0; i

An example to demonstrate on how we can fix this

package javaapplication12;

/**
 *
 * @author yccheok
 */
public class JavaApplication12 {

    public static class Parcelable {

    }

    public static class Uri extends Parcelable {

    }

    public static Parcelable[] getParcelableArrayExtraDuringLowMemoryRestoration() {    
        // The Android system has no way to know it needs to create Uri[],
        // during low memory restoration process.
        Parcelable[] parcelables = new Parcelable[3];

        for (int i=0; i