I’ve wasted a few hours of the last days figuring out a way to do what you (and, me too, by the way) want to do. After looking through the whole source of RemoteViews twice, I figured the only way to accomplish this task is good old, ugly and hacky Java Reflections. Here it is: … Read more
I finally figured out what to type into Google :), and found this Android, How to use readTypedList method correctly in a Parcelable class? The solution was to use read-/writeTypedList instead. I also initialize the arraylist to avoid any further NullPointerException. Class A public class A implements Parcelable { public String str; public ArrayList<B> list … Read more
The first error: ‘The Method Put Extra is Ambiguous for the type Intent’. The class Car is both Serializable and Parcelable, the compiler doesn’t know whether to use putExtra(Serializable s) or putExtra(Parcelable p) to handle your request. So you have to cast your Car to one of them when using Intent.putExtra(). Intent.putExtra(“car”, (Parcelable)myCarObject); Intent.putExtra(“car”, (Serializable)myCarObject); … Read more
There’s some rules for write and read parcelables. 1- Be careful about type mismatch. If you write int, don’t try to read long etc. 2- Be careful about order of writes and reads. Objects must be at the same sort order when reading and writing. Both of these can cause “Unmarshalling unknown type code”.
I had similar problem and my solution was: parcel.writeString(this.questionType.name()); and for reading : this.questionType = QuestionType.valueOf(parcel.readString()); QuestionType is enum and remember that ordering of elements matters.
I’ve found this link showing how you can unit test a parcelable object: http://stuffikeepforgettinghowtodo.blogspot.nl/2009/02/unit-test-your-custom-parcelable.html You can actually skip the Bundle if you don’t really need to include it like zorch did his suggestion. You would then get something like this: public void testTestClassParcelable(){ TestClass test = new TestClass(); // Obtain a Parcel object and write … Read more
You can simply put an entire JSONObject as a string. Something like this: i.putString(“product”, jsonObj.toString); And then in the MovieProductActivity you could JSONObject jsonObj = new JSONObject(getIntent().getStringExtra(“product”));
First create a helper class ParcelableUtil.java: public class ParcelableUtil { public static byte[] marshall(Parcelable parceable) { Parcel parcel = Parcel.obtain(); parceable.writeToParcel(parcel, 0); byte[] bytes = parcel.marshall(); parcel.recycle(); return bytes; } public static Parcel unmarshall(byte[] bytes) { Parcel parcel = Parcel.obtain(); parcel.unmarshall(bytes, 0, bytes.length); parcel.setDataPosition(0); // This is extremely important! return parcel; } public static <T> … Read more
Here are two extension methods that I use for Bundle & Intent: inline fun <reified T : Parcelable> Intent.parcelable(key: String): T? = when { SDK_INT >= 33 -> getParcelableExtra(key, T::class.java) else -> @Suppress(“DEPRECATION”) getParcelableExtra(key) as? T } inline fun <reified T : Parcelable> Bundle.parcelable(key: String): T? = when { SDK_INT >= 33 -> getParcelable(key, T::class.java) … Read more
Between Activity: Worked for me ArrayList<Object> object = new ArrayList<Object>(); Intent intent = new Intent(Current.class, Transfer.class); Bundle args = new Bundle(); args.putSerializable(“ARRAYLIST”,(Serializable)object); intent.putExtra(“BUNDLE”,args); startActivity(intent); In the Transfer.class Intent intent = getIntent(); Bundle args = intent.getBundleExtra(“BUNDLE”); ArrayList<Object> object = (ArrayList<Object>) args.getSerializable(“ARRAYLIST”); Hope this help’s someone. Using Parcelable to pass data between Activity This usually works when … Read more