Android数据跳转

<?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"
    android:paddingTop="100dp"
    android:paddingLeft="40dp">

    <LinearLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="horizontal">
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="鐢ㄦ埛鍚嶏細"
            android:textSize="20sp"/>
        <EditText
            android:id="@+id/et_user"
            android:layout_width="250dp"
            android:layout_height="wrap_content"
            android:hint="璇疯緭鍏ョ敤鎴峰悕"
            android:textColor="#ccc"/>
    </LinearLayout>
    <LinearLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        android:layout_marginTop="10dp">
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="瀵?   鐮侊細"
            android:textSize="20sp"/>
        <EditText
            android:id="@+id/et_password"
            android:layout_width="250dp"
            android:layout_height="wrap_content"
            android:hint="璇疯緭鍏ュ瘑鐮?
            android:textColor="#ccc"/>
    </LinearLayout>
    <LinearLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="10dp">
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="鎬?   鍒細"
            android:textSize="20sp" />
        <RadioGroup
            android:id="@+id/sex"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:orientation="horizontal">
            <RadioButton
                android:id="@+id/sex_man"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:textSize="20sp"
                android:text="鐢? />
            <RadioButton
                android:id="@+id/sex_woman"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:textSize="20sp"
                android:text="濂?
                android:layout_marginLeft="20dp"/>
        </RadioGroup>

    </LinearLayout>
    <LinearLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content">
        <TextView
            android:id="@+id/hobby"
            android:layout_width="100sp"
            android:layout_height="wrap_content"
            android:text="鐖?   濂斤細"
            android:textSize="20dp"
            android:layout_marginTop="10dp"/>
        <CheckBox
            android:id="@+id/hb_badminton"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="缇芥瘺鐞?
            android:textSize="20sp"
            android:layout_marginTop="10dp"/>
        <CheckBox
            android:id="@+id/hb_basketball"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="绡悆"
            android:textSize="20sp"
            android:layout_marginTop="10dp"/>
        <CheckBox
            android:id="@+id/hb_baseball"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="鎺掔悆"
            android:textSize="20sp"
            android:layout_marginTop="10dp"/>
    </LinearLayout>
    <Button
        android:id="@+id/btn_login"
        android:layout_width="200dp"
        android:layout_height="wrap_content"
        android:text="鐧诲綍"
        android:textColor="#fff"
        android:textSize="25sp"
        android:background="#2283f3"
        android:layout_marginTop="50dp"
        android:layout_marginLeft="60dp"
        android:onClick="onClick"/>
</LinearLayout>
package com.example.show;

import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.EditText;
import android.widget.RadioGroup;

public class MainActivity extends AppCompatActivity implements CompoundButton.OnCheckedChangeListener {
    private EditText et_user, et_password;      //声明变量
    private RadioGroup sex;
    private CheckBox hb_badminton, hb_basketball, hb_baseball;
    private Intent intent;
    private String muser;
    private String mpassword;
    private String msex;
    private String mhobby;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        init();
        mhobby = new String();//存放多选框内容
    }
    private void init(){  //绑定控件
        et_user = findViewById(R.id.et_user);
        et_password = findViewById(R.id.et_password);
        hb_badminton = findViewById(R.id.hb_badminton);
        hb_baseball= findViewById(R.id.hb_baseball);
        hb_basketball = findViewById(R.id.hb_basketball);
        hb_badminton.setOnCheckedChangeListener(this);
        hb_baseball.setOnCheckedChangeListener(this);
        hb_basketball.setOnCheckedChangeListener(this);
         sex = findViewById(R.id.sex);
         //通过匿名内部类的形式为单选框注册监听
        sex.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(RadioGroup group, int checkedId) {
                //判断性别
                if (checkedId==R.id.sex_man){
                    msex = "男";
                }else {
                    msex = "女";
                }
            }
        });
    }
    //通过实现接口的形式为多选框组注册监听
    @Override
    public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
        String motion = buttonView.getText().toString();
        if (isChecked){
            if (!mhobby.contains(motion)){
                mhobby = mhobby + motion;
            }
        }else {
            if (mhobby.contains(motion)) {
                mhobby = mhobby.replace(motion, "");
            }
        }
    }

    //通过注册按钮的click属性实现点击事件
    public void onClick(View v) {
        if (v.getId()==R.id.btn_login){
            //获取用户名和密码
            muser = et_user.getText().toString();
            mpassword = et_password.getText().toString();
        }
        //通过Intent将用户名和密码、单选框内容和多选框内容，传递给secondActivity
        intent = new Intent(this,SecondActivity.class);

        intent.putExtra("muser",muser);
        intent.putExtra("mpassword",mpassword);
        intent.putExtra("msex",msex);
        intent.putExtra("mhobby",mhobby);
        startActivity(intent);

    }
}
----------------------------------------------------
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">
    <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="浣犵殑淇℃伅涓猴細"
        android:textSize="30sp"
        android:layout_marginLeft="30dp"
        android:layout_marginTop="50dp"
        android:textColor="#000"/>

    <TextView
        android:id="@+id/tv_outData"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:paddingLeft="30dp"
        android:text=""
        android:textSize="30sp" />

</LinearLayout>

package com.example.show;

import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;
import android.os.Bundle;
import android.widget.TextView;
import android.widget.Toast;

public class SecondActivity extends AppCompatActivity {
    private TextView tv_outData;//存放传递的数据
    private Intent intent;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_second);
        //接受MainActivity传递的数据
        Intent intent = getIntent();

        String user = intent.getStringExtra("muser");
        String password = intent.getStringExtra("mpassword");
        String msex = intent.getStringExtra("msex");
        String mhobby = intent.getStringExtra("mhobby");

        tv_outData = findViewById(R.id.tv_outData);
        tv_outData.setText("用户名：" + user + "\n" + "密    码：" + password + "\n" + "性    别：" + msex + "\n" + "爱    好：" + mhobby);
    }
}
--------------------------------------------------------------------
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text=""/>

    <Button
        android:id="@+id/btn1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_centerVertical="true"
        android:text=""
        android:onClick="regist"/>

</RelativeLayout>
-------------------------------------------------------------
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="databack.RegistActivity">

    <EditText
        android:id="@+id/editText1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignBaseline="@+id/textView1"
        android:layout_alignBottom="@+id/textView1"
        android:layout_alignParentRight="true"
        android:ems="10" />

    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_alignParentTop="true"
        android:layout_marginTop="74dp"
        android:text="" />

    <EditText
        android:id="@+id/editText2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/editText1"
        android:layout_below="@+id/editText1"
        android:layout_marginTop="33dp"
        android:ems="10" />

    <TextView
        android:id="@+id/textView2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignBaseline="@+id/editText2"
        android:layout_alignBottom="@+id/editText2"
        android:layout_alignLeft="@+id/textView1"
        android:text="" />

    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/editText2"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="91dp"
        android:onClick="click"
        android:text="" />

</RelativeLayout>