我试图重现您的问题，但我无法...我使用了 writeParcelableArray 和 NOT writeTypedArray。以下是我创建的类：
public class SuperClass implements Parcelable {
public static final Parcelable.Creator<SuperClass> CREATOR = new Creator<SuperClass>() {
@Override
public SuperClass[] newArray(int size) {
return new SuperClass[size];
}
@Override
public SuperClass createFromParcel(Parcel source) {
return new SuperClass(source);
}
};
private String label;
public SuperClass() {
}
protected SuperClass(Parcel source) {
label = source.readString();
}
@Override
public void writeToParcel(Parcel dest, int flags) {
dest.writeString(label);
}
@Override
public int describeContents() {
// TODO Auto-generated method stub
return 0;
}
}
及其子类：
public class FirstSubClass extends SuperClass {
public static final Parcelable.Creator<FirstSubClass> CREATOR = new Creator<FirstSubClass>() {
@Override
public FirstSubClass[] newArray(int size) {
return new FirstSubClass[size];
}
@Override
public FirstSubClass createFromParcel(Parcel source) {
return new FirstSubClass(source);
}
};
public FirstSubClass() {
super();
}
public FirstSubClass(Parcel source) {
super(source);
}
}
和：
public class SecondSubClass extends SuperClass {
public static final Parcelable.Creator<SecondSubClass> CREATOR = new Creator<SecondSubClass>() {
@Override
public SecondSubClass[] newArray(int size) {
return new SecondSubClass[size];
}
@Override
public SecondSubClass createFromParcel(Parcel source) {
return new SecondSubClass(source);
}
};
public SecondSubClass() {
super();
}
public SecondSubClass(Parcel source) {
super(source);
}
}
还有SomeClass:
public class SomeClass implements Parcelable {
public static final Parcelable.Creator<SomeClass> CREATOR = new Creator<SomeClass>() {
@Override
public SomeClass[] newArray(int size) {
return new SomeClass[size];
}
@Override
public SomeClass createFromParcel(Parcel source) {
return new SomeClass(source);
}
};
private String name;
private SuperClass[] array;
public SomeClass(String name, SuperClass[] array) {
this.name = name;
this.array = array;
}
protected SomeClass(Parcel source) {
this.name = source.readString();
Parcelable[] temp = source.readParcelableArray(SuperClass.class.getClassLoader());
array = new SuperClass[temp.length];
for (int i = 0; i < temp.length; i++) {
array[i] = (SuperClass) temp[i];
}
}
public String toString() {
StringBuilder sb = new StringBuilder(name);
if (array == null || array.length == 0) {
sb.append(" Array is empty");
} else {
sb.append(" Array:");
for (SuperClass sc : array) {
sb.append(sc.getClass().getSimpleName());
sb.append(",");
}
sb.setLength(sb.length() - 1);
}
return sb.toString();
}
public String getName() {
return name;
}
public SuperClass[] getArray() {
return array;
}
@Override
public void writeToParcel(Parcel dest, int flags) {
dest.writeString(name);
dest.writeParcelableArray(array, flags);
}
@Override
public int describeContents() {
return 0;
}
}
从一个活动中，我点击一个按钮，创建一个SomeClass 对象，附加到我启动一个新活动的意图，并从那里记录传递的值。启动活动的函数：
@Override
public void onClick(View v) {
SuperClass[] array = new SuperClass[] { new SuperClass(), new FirstSubClass(), new SecondSubClass(), new SuperClass() };
SomeClass cl = new SomeClass("My Label", array);
Intent intent = new Intent(this, NextActivity.class);
intent.putExtra("PASS", cl);
startActivity(intent);
}
来自NextActivity：
public class NextActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//set some content if you wish
Log.d("LOG_TAG", "Passed value: " + getIntent().getParcelableExtra("PASS"));
}
}
我可以在日志中看到：
Passed value: My Label Array:SuperClass,FirstSubClass,SecondSubClass,SuperClass
正是我从以前的活动中传递的内容...检查与您的代码的差异，我怀疑您没有为FirstSubClass 和SecondSubClass 编写CREATOR