Android第五次作业

<?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=".MainActivity">

    <TextView
        android:id="@+id/tv1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="用户名:"
        android:layout_marginTop="100dp"
        android:layout_marginLeft="20dp"/>
    <EditText
        android:id="@+id/et1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="请输入用户名:"
        android:layout_toRightOf="@+id/tv1"
        android:layout_alignTop="@id/tv1"
        android:layout_marginRight="50dp"/>
    <TextView
        android:id="@+id/tv2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="密码:"
        android:layout_below="@+id/tv1"
        android:layout_marginTop="50dp"
        android:layout_alignRight="@+id/tv1"/>
    <EditText
        android:id="@+id/et2"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="请输入密码:"
        android:layout_toRightOf="@+id/tv2"
        android:layout_below="@+id/tv1"
        android:layout_alignTop="@id/tv2"
        android:layout_marginRight="50dp"/>

    <LinearLayout
        android:id="@+id/ll_1"
        android:layout_width="200dp"
        android:layout_height="200dp"
        android:layout_below="@+id/et2"
        android:orientation="vertical"
        android:layout_marginLeft="20dp"
        android:layout_marginTop="30dp">
        <TextView
            android:id="@+id/tv3"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="兴趣爱好：" />
        <CheckBox
            android:id="@+id/cb_1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="编程"
            android:layout_marginTop="30dp"/>
        <CheckBox
            android:id="@+id/cb_2"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="下棋" />
        <CheckBox
            android:id="@+id/cb_3"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="唱歌" />
    </LinearLayout>
    <Button
        android:id="@+id/btn1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="200dp"
        android:layout_below="@+id/et2"
        android:onClick="click"
        android:text="注册" />

</RelativeLayout>

package com.example.myhomework;

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;

public class MainActivity extends AppCompatActivity implements CompoundButton.OnCheckedChangeListener {
    String s1="",s2="",s3="";
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        CheckBox cb1=(CheckBox)findViewById(R.id.cb_1);
        CheckBox cb2=(CheckBox)findViewById(R.id.cb_2);
        CheckBox cb3=(CheckBox)findViewById(R.id.cb_3);
        cb1.setOnCheckedChangeListener(this);
        cb2.setOnCheckedChangeListener(this);
        cb3.setOnCheckedChangeListener(this);

    }
    public void click(View view){
        Intent intent=new Intent();
        intent.setClass(MainActivity.this,SecondActivity.class);
        String name=((EditText)(findViewById(R.id.et1))).getText().toString();
        String account=name;
        String text=s1+" "+s2+" "+s3;
        intent.putExtra("account",account);
        intent.putExtra("text",text);
        startActivity(intent);
    }
    @Override
    public void onCheckedChanged(CompoundButton cb, boolean isChecked) {
        // TODO Auto-generated method stub
        switch (cb.getId()) {
            case R.id.cb_1:
                if(isChecked)
                    s1+="编程";
                else s1="";
                break;
            case R.id.cb_2:
                if(isChecked)
                    s2+="下棋";
                else s2="";
                break;
            case R.id.cb_3:
                if(isChecked)
                    s3+="唱歌";
                else s3="";
                break;
            default:
                break;
        }
    }

    @Override
    public void onPointerCaptureChanged(boolean hasCapture) {

    }
}

<?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=".SecondActivity">
    <TextView
        android:id="@+id/tv_1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="这是界面2"
        android:textSize="25sp"
        android:textColor="#000000"/>

    <TextView
        android:id="@+id/tv_2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="50dp"
        android:text="用户名:" />
    <TextView
        android:id="@+id/tv_3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_toRightOf="@id/tv_2"
        android:layout_alignTop="@id/tv_2"
        android:text="" />
    <TextView
        android:id="@+id/tv_4"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@id/tv_2"
        android:layout_alignLeft="@id/tv_2"
        android:text="兴趣爱好:" />

    <TextView
        android:id="@+id/tv_5"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_toRightOf="@id/tv_4"
        android:layout_alignTop="@id/tv_4"
        android:text="" />
    <Button
        android:id="@+id/btn_1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="150dp"
        android:text="我要充值"/>
    <TextView
        android:id="@+id/tv1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:layout_below="@id/btn_1"
        android:layout_alignLeft="@id/btn_1"/>

</RelativeLayout>

package com.example.myhomework;

import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.TextView;

public class SecondActivity extends AppCompatActivity implements View.OnClickListener {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_second);
        Intent intent1 = getIntent();
        String name = intent1.getStringExtra("account");
        ((TextView) (findViewById(R.id.tv_3))).setText(name);
        Intent intent2 = getIntent();
        String text = intent2.getStringExtra("text");
        ((TextView) (findViewById(R.id.tv_5))).setText(text);

        findViewById(R.id.btn_1).setOnClickListener(this);

    }

    @Override
    public void onClick(View view) {
        Intent intent = new Intent(this,ThirdActivity.class);
        startActivityForResult(intent,1);
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if(requestCode==1&&resultCode==2){
            String pay=data.getStringExtra("pay");
            ((TextView)(findViewById(R.id.tv1))).setText(pay);
        }
    }
}

<?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"
    tools:context=".ThirdActivity"
    android:orientation="vertical">
    <TextView
        android:id="@+id/tv_6"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="充值金额为:"
        android:textSize="25sp"
        android:layout_marginTop="50dp"
        android:layout_gravity="center"/>
    <Button
        android:id="@+id/bt_1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="100"
        android:layout_gravity="center"/>
    <Button
        android:id="@+id/bt_2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="500"
        android:layout_gravity="center"/>
    <Button
        android:id="@+id/bt_3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="1000"
        android:layout_gravity="center"/>
</LinearLayout>

package com.example.myhomework;

import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;
import android.os.Bundle;
import android.view.View;

public class ThirdActivity extends AppCompatActivity implements View.OnClickListener {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_third);
        findViewById(R.id.bt_1).setOnClickListener(this);
        findViewById(R.id.bt_2).setOnClickListener(this);
        findViewById(R.id.bt_3).setOnClickListener(this);
    }

    @Override
    public void onClick(View view) {
        switch (view.getId()) {
            case R.id.bt_1:
                Intent intent1 = new Intent(this, SecondActivity.class);
                intent1.putExtra("pay", "充值金额为：100元");
                setResult(2, intent1);
                finish();
                break;
            case R.id.bt_2:
                Intent intent2 = new Intent(this, SecondActivity.class);
                intent2.putExtra("pay", "充值金额为：500元");
                setResult(2, intent2);
                finish();
                break;
            case R.id.bt_3:
                Intent intent3 = new Intent(this, SecondActivity.class);
                intent3.putExtra("pay", "充值金额为：1000元");
                setResult(2, intent3);
                finish();
                break;
        }
    }

    @Override
    public void onPointerCaptureChanged(boolean hasCapture) {

    }
}