安卓第五次作业10/7

1.多个Activity界面实现数据的传递

<?xml version="1.0" encoding="utf-8"?>

<androidx.constraintlayout.widget.ConstraintLayout 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=".MainActivity"

    android:background="#565968">

 

    <RelativeLayout

        android:layout_width="match_parent"

        android:layout_height="match_parent">

 

 

        <TextView

            android:id="@+id/tv1"

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:layout_marginTop="16dp"

            android:text="用户名："/>

 

 

        <EditText

            android:id="@+id/et1"

            android:layout_width="200dp"

            android:layout_height="wrap_content"

            android:layout_toRightOf="@id/tv1"

            />

 

        <TextView

            android:id="@+id/tv2"

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:layout_marginTop="25dp"

            android:text="密码："

            android:layout_below="@id/tv1"/>

 

 

        <EditText

            android:id="@+id/et2"

            android:layout_width="200dp"

            android:layout_height="wrap_content"

            android:layout_below="@id/tv1"

            android:layout_toRightOf="@id/tv1"

            android:layout_marginTop="10dp"

            />

 

 

        <TextView

            android:id="@+id/tv3"

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:text="性别："

            android:layout_below="@id/tv2"

            android:layout_marginTop="29dp"/>

 

        <RadioGroup

            android:id="@+id/rg1"

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:orientation="horizontal"

            android:layout_below="@id/tv2"

            android:layout_toRightOf="@id/tv3"

            android:layout_marginTop="25dp">

 

            <RadioButton

                android:id="@+id/boy"

                android:layout_width="wrap_content"

                android:layout_height="wrap_content"

                android:text="男"/>

 

            <RadioButton

                android:layout_width="wrap_content"

                android:layout_height="wrap_content"

                android:text="女"/>

 

        </RadioGroup>

 

        <TextView

            android:id="@+id/tv4"

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:text="爱好："

            android:layout_below="@id/tv3"

            android:layout_marginTop="29dp"/>

 

        <CheckBox

            android:id="@+id/ping-pong"

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:text="乒乓球"

            android:textSize="12dp"

            android:layout_below="@id/tv4"

            />

 

        <CheckBox

            android:id="@+id/football"

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:text="足球"

            android:textSize="12dp"

            android:layout_marginLeft="75dp"

            android:layout_below="@id/tv4"

            />

 

        <CheckBox

            android:id="@+id/volleyball"

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:text="排球"

            android:textSize="12dp"

            android:layout_marginLeft="135dp"

            android:layout_below="@id/tv4"

            />

 

        <CheckBox

            android:id="@+id/badminton"

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:text="羽毛球"

            android:textSize="12dp"

            android:layout_marginLeft="195dp"

            android:layout_below="@id/tv4"

            />

 

        <CheckBox

            android:id="@+id/basketball"

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:text="篮球"

            android:textSize="12dp"

            android:layout_marginLeft="265dp"

            android:layout_below="@id/tv4"

            />

 

        <Button

            android:id="@+id/btn1"

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:text="注册"

            android:textColor="#896526"

            android:layout_below="@id/tv4"

            android:layout_marginTop="100dp"

            android:layout_marginLeft="120dp"

            android:onClick="click"/>

 

 

    </RelativeLayout>

 

</androidx.constraintlayout.widget.ConstraintLayout>

package com.example.myhomework4;

 

import androidx.appcompat.app.AppCompatActivity;

 

import android.content.Intent;

import android.os.Bundle;

import android.view.View;

import android.widget.CheckBox;

import android.widget.EditText;

import android.widget.RadioButton;

import android.widget.RadioGroup;

 

public class MainActivity extends AppCompatActivity {

 

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

    }

 

    public void click(View view){

 

                Intent it1=new Intent(this,SecondActivity.class);

                String username = ((EditText)findViewById(R.id.et1)).getText().toString();

                String password = ((EditText)findViewById(R.id.et2)).getText().toString();

                it1.putExtra("username", username);

                it1.putExtra("password", password);

 

 

        RadioGroup radioGroup = (RadioGroup) findViewById(R.id.rg1);

        int id = radioGroup.getCheckedRadioButtonId();

        if(id == R.id.boy)

        {

            it1.putExtra("sex","男");

        }

        else

        {

            it1.putExtra("sex","女");

        }

 

        CheckBox checkBox1 = (CheckBox)findViewById(R.id.ping_pong);

        CheckBox checkBox2 = (CheckBox)findViewById(R.id.football);

        CheckBox checkBox3 = (CheckBox)findViewById(R.id.volleyball);

        CheckBox checkBox4 = (CheckBox)findViewById(R.id.badminton);

        CheckBox checkBox5 = (CheckBox)findViewById(R.id.basketball);

        if(checkBox1.isChecked()) {

            it1.putExtra("ping-pong","乒乓球");

        }

        if (checkBox2.isChecked()) {

            it1.putExtra("football","足球");

        }

        if(checkBox3.isChecked()) {

            it1.putExtra("volleyball", "排球");

        }

        if(checkBox4.isChecked()) {

            it1.putExtra("badminton", "羽毛球");

        }

        if (checkBox5.isChecked()){

            it1.putExtra("basketball","篮球");

        }

 

        startActivity(it1);

    }

 

}

package com.example.myhomework4;

 

import android.app.Activity;

import android.content.Intent;

import android.widget.Toast;

 

public class SecondActivity extends Activity {

 

    @Override

    protected void onStart() {

        super.onStart();

        Intent intent = getIntent();

        String username = intent.getStringExtra("username");

        String password = intent.getStringExtra("password");

        String sex = intent.getStringExtra("sex");

        String pingpong ="";

        String football ="";

        String volleyball ="";

        String badminton ="";

        String basketball ="";

        if(intent.getStringExtra("ping-pong") != null)

        {

            pingpong = intent.getStringExtra("ping-pong");

        }

        if(intent.getStringExtra("football") != null)

        {

            football = intent.getStringExtra("football");

        }

        if(intent.getStringExtra("volleyball") != null)

        {

            volleyball = intent.getStringExtra("volleyball");

        }

        if(intent.getStringExtra("badminton") != null)

        {

            badminton = intent.getStringExtra("badminton");

        }

        if(intent.getStringExtra("basketball") != null)

        {

            basketball = intent.getStringExtra("basketball");

        }

 

        Toast.makeText(this, "您好，您的注册信息是:\n\n" + "用户名:" + username + "\n密码:" + password + "\n性别:"

                + sex + "\n爱好:" + pingpong  + football + volleyball + badminton +  basketball, Toast.LENGTH_SHORT).show();

    }

}