Bundle数据传递案例

最新推荐文章于 2023-09-18 18:44:35 发布

qq_25693795

最新推荐文章于 2023-09-18 18:44:35 发布

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文章标签： android bean 数据

本文链接：https://blog.youkuaiyun.com/qq_25693795/article/details/51760740

以下是利用Bundle传递数据。

Bundle数据传递支持基本数据类型，Serializable类型

putXxx(String key,Xxx data):向Bundle存入int,long等各种类型数据。

putSerrializable(String key,Serrializable data) 向Bundle中存入可序列化的对象。

getXxx(String key):从Bundle中取出int,long等各种类型数据

getSerialzable(String key）从Bundle中取出可序列化对象

以下是利用Bundle传递可序列化对象案列

首先我们建立一个可序列化的实体类

package com.example.fragmenttest;

import java.io.Serializable;

public class Bean implements Serializable{
/**
*
*/
private static final long serialVersionUID = 1L;
private String user;
private String pass;
private char sex;

public Bean(String user, String pass, char sex) {
super();
this.user = user;
this.pass = pass;
this.sex = sex;
}

public Bean() {
super();
}

public String getUser() {
return user;
}
public void setUser(String user) {
this.user = user;
}
public String getPass() {
return pass;
}
public void setPass(String pass) {
this.pass = pass;
}
public char getSex() {
return sex;
}
public void setSex(char sex) {
this.sex = sex;
}

}

随后我们在建立首页

package com.example.fragmenttest;

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

public class Main extends Activity {
private Button zhuce;
private EditText user,pass;
private RadioGroup rg;
private Intent intent;
private char sex=0;
private Bean bean;
private Bundle bun;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.main_layout);
initView();
}
public void initView(){//初始化及监听
zhuce = (Button)findViewById(R.id.zhuce);
user = (EditText)findViewById(R.id.user_input);
pass = (EditText)findViewById(R.id.pass_input);
rg = (RadioGroup)findViewById(R.id.rg);
zhuce.setOnClickListener(new OnClickListener() {

@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub

sex= rg.getCheckedRadioButtonId()==R.id.man?'男':'女';

bean = new Bean(user.getText().toString(),pass.getText().toString(),sex);
if(bean.getUser().toString().equals("")||bean.getPass().toString().equals("")){//如果内容有空则从新输入
Toast.makeText(Main.this, "数据不能为空!", Toast.LENGTH_SHORT).show();
return;
}else{
bun = new Bundle();
bun.putSerializable("ser", bean);//向Bundle中存入可序列化对象
intent = new Intent(Main.this, Other_Activity.class);
intent.putExtras(bun);//将Bundle对象加入Intent中
startActivity(intent);//进行跳转并携带Bundle数据

}
}
});
}
}

我们在看看第二个页面，第二个页面负责将数据取出并显示在界面上

package com.example.fragmenttest;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.widget.TextView;

public class Other_Activity extends Activity {
private TextView user,pass,sex;
private Bundle bun;
private Bean bean;
private Intent intent;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.other_layout);
InitView();
}
public void InitView(){
intent = getIntent();
bean = (Bean) intent.getSerializableExtra("ser");//通过key取出对应的数据
user = (TextView)findViewById(R.id.us);
pass = (TextView)findViewById(R.id.ps);
sex = (TextView)findViewById(R.id.sex);

//显示在文本
user.setText("用户名:"+bean.getUser().toString());
pass.setText("密码:"+bean.getPass().toString());
sex.setText("性别:"+bean.getSex());

}

}

下面我们再看看布局文件

下面是第一个布局界面

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

<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="请输入您的注册信息"
android:layout_marginTop="10dp"
android:layout_marginLeft="10dp"
/>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:paddingLeft="10dp"
android:paddingTop="10dp"
>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"

android:text="用户名:"
/>
<EditText
android:id="@+id/user_input"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
/>
</LinearLayout>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:paddingLeft="10dp"
android:paddingTop="10dp"
>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="密码:"
/>
<EditText
android:id="@+id/pass_input"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:password="true"
/>
</LinearLayout>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:layout_marginTop="10dp"
android:text="性别"
/>

<RadioGroup
android:id="@+id/rg"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:gravity="center_horizontal">

<RadioButton
android:id="@+id/man"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:checked="true"
android:text="男" />

<RadioButton
android:id="@+id/nv"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="女" />
</RadioGroup>
<Button
android:id="@+id/zhuce"
android:layout_width="fill_parent"
android:layout_height="40dp"
android:text="注册"
/>
</LinearLayout>
</LinearLayout>

第二个界面布局如下