Parcelable简单使用

来源：互联网发布：seo排名优化软件编辑：程序博客网时间：2024/06/05 09:58

MainActivity：

package com.tedu.parcelable;

import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.RadioButton;
import android.widget.RadioGroup;

public class MainActivity extends Activity implements OnClickListener{
   private Button btn;
   private EditText etName;
   private EditText etAge;
   private RadioButton rgMale;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        btn=(Button) findViewById(R.id.button1);
        etName=(EditText) findViewById(R.id.etName);
        etAge=(EditText) findViewById(R.id.etAge);
        rgMale=(RadioButton) findViewById(R.id.radio0);
        btn.setOnClickListener(this);
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

   @Override
   public void onClick(View v) {
       String username=etName.getText().toString().trim();
       int age=Integer.parseInt(etAge.getText().toString());
       String gender=rgMale.isChecked()?"男":"女";

       Intent intent=new Intent(this,SecondActivity.class);

//       intent.putExtra("_username",username);
//       intent.putExtra("_age",age);
//       intent.putExtra("_gender",gender);
       //将数据封装到person对象
       Person p=new Person();
       p.setUsername(username);
       p.setAge(age);
       p.setGender(gender);
       intent.putExtra("data",p);
       startActivity(intent);
   }

}

SecondActivity：

package com.tedu.parcelable;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;

public class SecondActivity extends Activity{
   @Override
   protected void onCreate(Bundle savedInstanceState) {
       // TODO Auto-generated method stub
       super.onCreate(savedInstanceState);
       Intent intent=getIntent();
//       String username=intent.getStringExtra("_username");
//       int age=intent.getIntExtra("_age",-1);
//       String gender=intent.getStringExtra("_gender");
       Person p=intent.getParcelableExtra("data");
       Log.i("info","username --> "+p.getUsername());
       Log.i("info","age --> "+p.getAge());
       Log.i("info","gender --> "+p.getGender());
   }
}

Person：

package com.tedu.parcelable;

import android.os.Parcel;
import android.os.Parcelable;

public class Person implements Parcelable{
   private String username;
   private int age;
   private String gender;

   public String getUsername() {
       return username;
   }

   public void setUsername(String username) {
       this.username = username;
   }

   public int getAge() {
       return age;
   }

   public void setAge(int age) {
       this.age = age;
   }

   public String getGender() {
       return gender;
   }

   public void setGender(String gender) {
       this.gender = gender;
   }

   public Person() {
       super();
   }

   public Person(String username, int age, String gender) {
       super();
       this.username = username;
       this.age = age;
       this.gender = gender;
   }
   public static final Parcelable.Creator<Person>
   CREATOR=new Creator<Person>() {

       @Override
       public Person[] newArray(int size) {
           // TODO Auto-generated method stub
           return new Person[size];
       }

       @Override
       public Person createFromParcel(Parcel source) {
           Person p=new Person();
           p.setUsername(source.readString());
           p.setAge(source.readInt());
           p.setGender(source.readString());
           return p;
       }
   };
   @Override
   public int describeContents() {
       // TODO Auto-generated method stub
       return 0;
   }

   @Override
   public void writeToParcel(Parcel dest, int flags) {
       dest.writeString(username);
       dest.writeInt(age);
       dest.writeString(gender);

   }

}

activity_main:

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