Activity传递数据（三）传递对象

来源：互联网发布：thug life软件编辑：程序博客网时间：2024/06/03 18:20

把对象作为参数传递能更好地控制数据，类只需要继承Serializable接口即可。

第一个Activity

package com.example.wjb.myapplication;import android.app.Activity;import android.content.Intent;import android.os.Bundle;import android.view.Menu;import android.view.MenuItem;import android.view.View;import android.widget.Button;import android.widget.TextView;import org.w3c.dom.Text;import java.io.Serializable;public class MainActivity extends Activity {    TextView tv;    Button btn;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        tv= (TextView) findViewById(R.id.textView1);        btn= (Button) findViewById(R.id.button1);        btn.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                Intent i = new Intent(MainActivity.this, Act.class);                i.putExtra("user", new User("wujiabao",21));                startActivity(i);            }        });    }}

第二个Activity

package com.example.wjb.myapplication;import android.app.Activity;import android.content.Intent;import android.os.Bundle;import android.view.View;import android.widget.Button;import android.widget.TextView;/** * Created by wjb on 2015/9/2. */public class Act extends Activity{    TextView tv;    Button btn;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.act);        tv= (TextView) findViewById(R.id.textView2);        btn= (Button) findViewById(R.id.button2);        Intent i=getIntent();        User u= (User) i.getSerializableExtra("user");        tv.setText(String.format("name=%s,age=%d",u.getName(),u.getAge()));    }}

User类

package com.example.wjb.myapplication;import java.io.Serializable;/** * Created by wjb on 2015/9/2. */public class User implements Serializable{    String name;    int age;    void setName(String name){        this.name=name;    }    void setAge(int age){        this.age=age;    }    String getName(){        return name;    }    int getAge(){        return age;    }    public User(String name,int age){        this.name=name;        this.age=age;    }}

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