1.Serializable
Serializable是序列化的意思,表示将一个对象转换成可存储或可传输的状态。序列化后的对象可以在网络上进行传输,也可以存储至本地。
public class Person implements Serializable {
private String name;
private int age;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
}
Person person = new Person();
person.setAge(25);
person.setName("Yh");
Intent intent = new Intent(MainActivity.this, SecondActivity.class);
intent.putExtra("person_data", person);
startActivity(intent);
Person person = (Person) getIntent().getSerializableExtra("person_data");
2.Parcelable
不同于将对象进行序列化,Parcelable方式的实现原理是将一个完整的对象进行分解,而分解后的每一部分都是基础数据类型,这样也就实现传递对象的功能了。
public class Person implements Parcelable {
private String name;
private int age;
private Fruit fruit;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
public Fruit getFruit() {
return fruit;
}
public void setFruit(Fruit fruit) {
this.fruit = fruit;
}
@Override
public int describeContents() {
return 0;
}
@Override
public void writeToParcel(Parcel dest, int flags) {
dest.writeString(name);
dest.writeInt(age);
dest.writeParcelable(fruit, flags);
}
public static final Person.Creator<Person> CREATOR = new Parcelable.Creator<Person>() {
@Override
public Person createFromParcel(Parcel source) {
Person person = new Person();
person.name = source.readString();
person.age = source.readInt();
person.fruit = source.readParcelable(Fruit.class.getClassLoader());
return person;
}
@Override
public Person[] newArray(int size) {
return new Person[size];
}
};
}
public class Fruit implements Parcelable {
private String name;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
@Override
public int describeContents() {
return 0;
}
@Override
public void writeToParcel(Parcel dest, int flags) {
dest.writeString(name);
}
public static final Parcelable.Creator<Fruit> CREATOR = new Parcelable.Creator<Fruit>() {
@Override
public Fruit createFromParcel(Parcel source) {
Fruit fruit = new Fruit();
fruit.name = source.readString();
return fruit;
}
@Override
public Fruit[] newArray(int size) {
return new Fruit[size];
}
};
}
Person person = new Person();
Fruit fruit = new Fruit();
fruit.setName("Apple");
person.setName("Yh");
person.setAge(25);
person.setFruit(fruit);
Intent intent = new Intent(MainActivity.this, SecondActivity.class);
intent.putExtra("person_data", person);
startActivity(intent);
Person person = getIntent().getParcelableExtra("person_data");
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