第9周作业

 

 

 

package com.example.myapplication;

import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;

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);
        Button  button=(Button)findViewById(R.id.b1);
        CheckBox cb1=(CheckBox)findViewById(R.id.cb1);
        CheckBox cb2=(CheckBox)findViewById(R.id.cb2);
        CheckBox cb3=(CheckBox)findViewById(R.id.cb3);
        cb1.setOnCheckedChangeListener(this);
        cb2.setOnCheckedChangeListener(this);
        cb3.setOnCheckedChangeListener(this);


    }
    public void btn1(View view){
        Intent intent=new Intent(MainActivity.this,SecondActivity.class);
        EditText editText=(EditText)findViewById(R.id.et1);
        String name=editText.getText().toString();
        intent.putExtra("name",name);


        String text=s1+s2+s3;
        intent.putExtra("text",text);


        startActivity(intent);




    }

    @Override
    public void onCheckedChanged(CompoundButton cb, boolean isChecked) {
        switch (cb.getId()) {
            case R.id.cb1:
                if(isChecked)
                    s1+="编程";
                else s1="";
                break;
            case R.id.cb2:
                if(isChecked)
                    s2+=" 下棋";
                else s2="";
                break;
            case R.id.cb3:
                if(isChecked)
                    s3+=" 唱歌";
                else s3="";
                break;

            default:
                break;
        }
    }
}

package com.example.myapplication;

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 {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_second);
        TextView textview=(TextView)findViewById(R.id.tv4);
        TextView textView1=findViewById(R.id.tv6);
        Intent intent=getIntent();
        String name1=intent.getStringExtra("name");
        String text="用户名："+name1;
        textview.setText(text);

        String text1=intent.getStringExtra("text");
        String text2="兴趣爱好："+text1;
        textView1.setText(text2);


    }
    public void btn2(View view){
        Intent intent=new Intent(SecondActivity.this,ThirdActivity.class);
        startActivityForResult(intent, 111);
    }
    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent intent) {
        // TODO Auto-generated method stub
        super.onActivityResult(requestCode, resultCode, intent);
        if(requestCode==111&&resultCode==222){

            int price1=intent.getIntExtra("price",0);
            TextView textView1=(TextView)(findViewById(R.id.tv5));
            String text2="充值金额："+price1;
            textView1.setText(text2);
        }
    }

}

package com.example.myapplication;

import androidx.appcompat.app.AppCompatActivity;

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

public class ThirdActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_third);
    }
    public void btn3(View view){
        Intent intent=new Intent();
        TextView textView=(TextView)(findViewById(R.id.edchong));
        int price=Integer.parseInt(textView.getText().toString());
        intent.putExtra("price", price);
        setResult(222, intent);
        finish();
    }

}

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    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="50dp"
        android:layout_marginBottom="20dp"/>

    <TextView
        android:layout_below="@id/tv1"
        android:id="@+id/tv2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="密码:" />

    <EditText
        android:id="@+id/et2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignBaseline="@+id/tv2"
        android:layout_alignBottom="@+id/tv2"
        android:layout_alignLeft="@+id/et1"
        android:ems="10"
        android:hint="请输入密码" />

    <EditText
        android:id="@+id/et1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignBaseline="@+id/tv1"
        android:layout_alignBottom="@+id/tv1"
        android:layout_marginLeft="14dp"
        android:layout_toRightOf="@+id/tv1"
        android:ems="10"
        android:hint="请输入用户名" />
    <TextView

        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="兴趣爱好："
        android:id="@+id/tv3"
        android:layout_marginTop="30dp"
        android:layout_below="@id/tv2"
        />
    <CheckBox
        android:layout_marginTop="20dp"
        android:id="@+id/cb1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="编程"
        android:layout_below="@id/tv3"
        />
    <CheckBox
        android:id="@+id/cb2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="下棋"
        android:layout_below="@id/cb1"
        />
    <CheckBox
        android:id="@+id/cb3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="唱歌"
        android:layout_below="@id/cb2"
        />

    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/cb3"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="34dp"
        android:text="注册"
        android:id="@+id/b1"
        android:onClick="btn1"
        />

</RelativeLayout>

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".SecondActivity" >

    <Button
        android:id="@+id/b2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true"
        android:layout_centerVertical="true"
        android:onClick="btn2"
        android:text="我要充值" />
    <TextView
        android:id="@+id/tv4"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="150dp"
        android:layout_centerHorizontal="true"

        />
    <TextView
        android:id="@+id/tv6"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="230dp"
        android:layout_marginLeft="150dp"
        />




    <TextView
        android:id="@+id/tv5"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/b2"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="51dp"
        />
    </RelativeLayout>

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".ThirdActivity" >

    <EditText
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:hint="请输入充值金额"
        android:id="@+id/edchong"
        />

    <Button
        android:id="@+id/finish"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/edchong"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="139dp"
        android:onClick="btn3"
        android:text="完成" />

</RelativeLayout>