Intent传送对象

转载请注明出处：http://blog.csdn.net/mr_leixiansheng/article/details/53693616

作用： 将对象传递到其他活动

步骤：（与一般数据传送相似）

区别：

1、对象类需要实现Serializable接口

2、接收时 Person person = (Person) getIntent().getSerializableExtra("person_data");

代码如下：

1、类实现接口

package com.example.administrator.intentobj;

import java.io.Serializable;

/**
* Created by Administrator on 2016/12/16.
*/

public class Person implements Serializable {
String name;
String age;

public String getAge() {
return age;
}

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

public String getName() {
return name;
}

public void setName(String name) {
this.name = name;
}
}

2、定义跳转界面

package com.example.administrator.intentobj;

import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v7.app.AppCompatActivity;
import android.widget.TextView;

/**
* Created by Administrator on 2016/12/16.
*/

public class SecondActivity extends AppCompatActivity {
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.second_layout);

TextView textView = (TextView) findViewById(R.id.textView);

//获取传递的对象
Person person = (Person) getIntent().getSerializableExtra("person_data");
String name = person.name;
String age = person.age;
textView.setText("getName is " + name + "\n" + "getAge is " + age);

}
}

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">

<TextView
android:text="TextView"
android:layout_marginLeft="5dp"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/textView" />
</LinearLayout>

3、主程序实现跳转

package com.example.administrator.intentobj;

import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;

public class MainActivity extends AppCompatActivity {

private Button button;
private EditText nameText;
private EditText ageText;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

nameText = (EditText) findViewById(R.id.name);
ageText = (EditText) findViewById(R.id.age);
button = (Button) findViewById(R.id.button);
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
//得到输入内容
String name = nameText.getText().toString();
String age = ageText.getText().toString();
//创建对象
Person person = new Person();
person.setAge(age);
person.setName(name);
//传递对象
Intent intent = new Intent(MainActivity.this, SecondActivity.class);
intent.putExtra("person_data", person);
startActivity(intent);
}
});
}
}

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">

<TableLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">

<TableRow>
<EditText
android:id="@+id/name"
android:hint="请输入姓名"
android:layout_weight="1"
android:layout_width="0dp"
android:layout_height="wrap_content"/>
<EditText
android:id="@+id/age"
android:hint="请输入年龄"
android:layout_weight="1"
android:layout_width="0dp"
android:layout_height="wrap_content"/>
</TableRow>

</TableLayout>

<Button
android:text="传送信息"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/button" />
</LinearLayout>

4、注册活动

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.administrator.intentobj">

<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />

<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".SecondActivity"/>
</application>

</manifest>