Parcelable实现数据组件的数据传递

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FirstActivity.java

package com.sdutacm.getcontextskillpractise;import android.content.Intent;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;public class FirstActivity extends AppCompatActivity {    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        Person person = new Person();        person.setAge(18);        person.setName("Tom");        Intent intent = new Intent(FirstActivity.this,SecondActivity.class);        intent.putExtra("person_data",person);        startActivity(intent);    }}

SecondActivity.java

package com.sdutacm.getcontextskillpractise;import android.os.Bundle;import android.support.annotation.Nullable;import android.support.v7.app.AppCompatActivity;import android.util.Log;/** * Created by bummer on 2017/8/9. */public class SecondActivity extends AppCompatActivity{   public static String TAG = "SecondActivity";    @Override    protected void onCreate(@Nullable Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        Person person = (Person) getIntent().getParcelableExtra("person_data");        Log.d(TAG,"person name is "+person.getName());        Log.d(TAG,"person age is "+person.getAge());    }}

Person.java

package com.sdutacm.getcontextskillpractise;import android.os.Parcel;import android.os.Parcelable;/** * Created by bummer on 2017/8/9. */public class Person implements Parcelable {   private String name;    private int age;    public static Creator<Person> getCREATOR() {        return CREATOR;    }    protected Person(Parcel in) {        name = in.readString();        age = in.readInt();    }    public static final Parcelable.Creator<Person> CREATOR = new Creator<Person>() {        @Override        public Person createFromParcel(Parcel in) {            Person person = new Person();            person.name = in.readString(); //读取name            person.age = in.readInt(); //读取年龄            return person;        }        @Override        public Person[] newArray(int size) {            return new Person[size];        }    };    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 Person() {    }    @Override    public int describeContents() {        return 0;    }    @Override    public void writeToParcel(Parcel dest, int flags) {        dest.writeString(name);  //写出name        dest.writeInt(age);   //写出age    }}

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