第十周作业

package com.example.myapplication211018;
import android.os.Bundle;
import androidx.appcompat.app.AppCompatActivity;
import android.content.Intent;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity implements CompoundButton.OnCheckedChangeListener{

    String s1="",s2="",s3="";
    private EditText et_1;
    private Button btn_1;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        et_1=findViewById(R.id.et_1);
        btn_1=findViewById(R.id.btn_1);

        CheckBox cb1=findViewById(R.id.cb_1);
        CheckBox cb2=findViewById(R.id.cb_2);
        CheckBox cb3=findViewById(R.id.cb_3);
        cb1.setOnCheckedChangeListener(this);
        cb2.setOnCheckedChangeListener(this);
        cb3.setOnCheckedChangeListener(this);

        btn_1.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                passDate();
            }
        });
    }

    public void passDate(){
        // 用intent封装数据并传递
        Intent intent=new Intent(this,SecondActivity.class);

        intent.putExtra("name",et_1.getText().toString().trim());

        String text=s1+s2+s3;
        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;
        }
    }
}

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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"
    android:orientation="vertical"
    tools:context=".MainActivity" >

    <LinearLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="100dp"
        android:layout_marginTop="50dp">
        <TextView
            android:id="@+id/tv_1"
            android:layout_width="50dp"
            android:layout_height="wrap_content"
            android:text="用户名:"/>
        <EditText
            android:id="@+id/et_1"
            android:layout_width="120dp"
            android:layout_height="wrap_content"
            android:hint="请输入用户名"/>
    </LinearLayout>

    <LinearLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="100dp"
        android:layout_marginTop="10dp">
        <TextView
            android:id="@+id/tv_2"
            android:layout_width="50dp"
            android:layout_height="wrap_content"
            android:text="密码:"/>
        <EditText
            android:id="@+id/et_2"
            android:layout_width="120dp"
            android:layout_height="wrap_content"
            android:hint="请输入密码"/>
    </LinearLayout>

    <TextView
        android:id="@+id/t3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="50dp"
        android:layout_marginLeft="50dp"
        android:text="兴趣爱好:"/>

    <CheckBox
        android:id="@+id/cb_1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="10dp"
        android:layout_marginLeft="50dp"
        android:text="音乐"/>

    <CheckBox
        android:id="@+id/cb_2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="50dp"
        android:text="舞蹈"/>

    <CheckBox
        android:id="@+id/cb_3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="50dp"
        android:text="画画"/>

    <Button
        android:id="@+id/btn_1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="50dp"
        android:layout_marginLeft="150dp"
        android:text="注册" />

</LinearLayout>

package com.example.myapplication211018;
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);

        Intent intent=getIntent();
        String name= intent.getStringExtra("name");
        String text="用户名:"+name;
        ((TextView)(findViewById(R.id.tv_3))).setText(text);

        String xq=intent.getStringExtra("text");
        String text1="兴趣爱好："+xq;
        ((TextView)(findViewById(R.id.tv4))).setText(text1);
    }

    public void click(View view) {
        // 设置跳转到的Activity
        Intent intent=new Intent(this,ChongzhiActivity.class);
        startActivityForResult(intent,1);
    }
    @Override
    protected void onActivityResult(int requestCode,int resultCode,Intent intent){
        super.onActivityResult(requestCode, resultCode, intent);
        if(requestCode==1&resultCode==2){
            int rmb=intent.getIntExtra("rmb",0);
            TextView textView=(findViewById(R.id.tv_4));
            String text="充值金额为:"+rmb;
            textView.setText(text);
        }
    }
}

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

    <TextView
        android:id="@+id/tv_3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="80dp"
        android:layout_marginLeft="150dp"
        android:text="." />

    <TextView
        android:id="@+id/tv4"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="110dp"
        android:layout_marginLeft="150dp"
        android:text="" />

    <Button
        android:id="@+id/btn_2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="150dp"
        android:layout_marginLeft="150dp"
        android:onClick="click"
        android:text="我要充值" />

    <TextView
        android:id="@+id/tv_4"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="230dp"
        android:layout_marginLeft="150dp"
        android:text="" />

</RelativeLayout>

package com.example.myapplication211018;
import androidx.appcompat.app.AppCompatActivity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.TextView;

public class ChongzhiActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_chongzhi);
    }

    public void click2(View view){
        Intent intent=new Intent();
        TextView textView=(findViewById(R.id.et_3));
        int rmb=Integer.parseInt(textView.getText().toString());

        intent.putExtra("rmb",rmb);
        setResult(2,intent);
        finish();
    }
}

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

    <LinearLayout
        android:id="@+id/llt_1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content">
        <TextView
            android:id="@+id/tv_5"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginTop="100dp"
            android:layout_marginLeft="100dp"
            android:text="充值:"/>
        <EditText
            android:id="@+id/et_3"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginTop="100dp"
            android:hint="请输入充值金额"/>
    </LinearLayout>

    <Button
        android:id="@+id/btn_3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="150dp"
        android:layout_below="@id/llt_1"
        android:onClick="click2"
        android:text="充值"/>

</RelativeLayout>