第八次作业

1.8

1.1
<?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/text_1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="40dp"
        android:layout_marginTop="120dp"
        android:text="手机号码" />

    <EditText
        android:id="@+id/tb_1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@id/text_1"
        android:layout_alignBottom="@id/text_1"
        android:layout_alignParentEnd="true"
        android:layout_marginLeft="-11dp"
        android:layout_marginEnd="3dp"
        android:layout_marginBottom="-69dp"
        android:layout_toRightOf="@id/text_1"
        android:hint="" />

    <Button
        android:id="@+id/button_2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="360dp"
        android:text="充值"
        android:onClick="click"/>

    <TextView
        android:id="@+id/tv_show"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_centerHorizontal="true"
        android:layout_marginBottom="40dp"
        android:textSize="28dp"/>

</RelativeLayout>

1.2
<?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=".Second">

      <TextView
          android:id="@+id/text_2"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_marginLeft="40dp"
          android:layout_marginTop="180dp"
          android:text="手机号码为" />

    <TextView
        android:id="@+id/text_3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_toRightOf="@id/text_2"
        android:layout_alignBottom="@id/text_2"
        android:text="  "/>

    <TextView
        android:id="@+id/text_5"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="40dp"
        android:layout_marginTop="240dp"
        android:text="充值金额"/>

    <EditText
        android:id="@+id/tb_2"
        android:layout_width="122dp"
        android:layout_height="wrap_content"
        android:layout_alignBottom="@id/text_5"
        android:layout_centerHorizontal="true"/>

    <Button
        android:id="@+id/bt_1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@id/text_5"
        android:layout_alignParentBottom="true"
        android:layout_marginLeft="32dp"
        android:layout_marginBottom="180dp"
        android:layout_toRightOf="@id/tb_2"
        android:text="充值"
        android:onClick="one"/>

    <Button
        android:id="@+id/bt_2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_marginBottom="180dp"
        android:layout_toLeftOf="@id/bt_2"
        android:layout_toRightOf="@id/tb_2"
        android:text="取消充值"
        android:onClick="two"/>
</RelativeLayout>

1.3
package com.example.couzhi;

import android.content.Intent;
import android.graphics.Color;
import android.support.annotation.Nullable;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.text.SpannableStringBuilder;
import android.text.Spanned;
import android.text.style.ForegroundColorSpan;
import android.view.View;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

    private EditText tb_1;
    private TextView tv_show;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        tb_1=findViewById(R.id.tb_1);
        tv_show =findViewById(R.id.tv_show);

    }
    //点按钮开启第二个窗口
    public void click(View V){
        Intent intent=new Intent();
        intent.setClass(this,Second.class);
        intent.putExtra("number",tb_1.getText().toString().trim());
        startActivityForResult(intent,1);

    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent intent) {
        super.onActivityResult(requestCode, resultCode, intent);

        if(requestCode==1&&resultCode==2){
            String show=intent.getStringExtra("data");
            String num=tb_1.getText().toString().trim();
            SpannableStringBuilder builder=new SpannableStringBuilder("你为号码"+num+"\n    充值了"+show+"钱");
            ForegroundColorSpan span1=new ForegroundColorSpan(Color.RED);
            builder.setSpan(span1,4,4+num.length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
            tv_show.setText(builder);
        }

        if(requestCode==1&&resultCode==3){
            tv_show.setTextColor(Color.RED);
            tv_show.setText("充值失败");
        }
    }
}

1.4
package com.example.couzhi;

import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.EditText;
import android.widget.TextView;

public class Second extends AppCompatActivity {

    //第二个页面的电话号码及充值金额
    private TextView text_3;
    private EditText tb_2;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_second);
        text_3=findViewById(R.id.text_3);
        tb_2=findViewById(R.id.tb_2);
        Intent intent=getIntent();
        text_3.setText(intent.getStringExtra("number"));
        tb_2.setText(intent.getStringExtra("data"));
    }
    public void one(View v){
        Intent intent=new Intent();
        intent.putExtra("data",tb_2.getText().toString().trim());
        setResult(2,intent);
        finish();
    }
    public void two(View v){
        Intent intent=new Intent();
        setResult(3,intent);
        finish();
    }
}