第七次安卓作业

<?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"
    android:background="#C8C4DCE7"
    android:orientation="vertical"
    tools:context=".MainActivity">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="70dp"
        android:gravity="center_horizontal">

        <ImageView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:src="@mipmap/ic_launcher" />

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center_vertical"
            android:text="QQ"
            android:textSize="70sp" />
    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginLeft="20dp"
        android:layout_marginTop="35dp"
        android:orientation="horizontal">

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text=" QQ  : "
            android:textColor="#050505"
            android:textSize="42sp" />

        <EditText
            android:id="@+id/et_number"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:hint="请输入QQ号"
            android:textSize="35dp" />
    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginLeft="20dp"
        android:orientation="horizontal">

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="密码 : "
            android:textColor="#050505"
            android:textSize="40sp" />

        <EditText
            android:id="@+id/et_password"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:hint="请输入密码"
            android:password="true"
            android:textSize="35dp" />
    </LinearLayout>

    <Button
        android:id="@+id/btn_register"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_margin="20dp"
        android:background="#15B5FA"
        android:gravity="center_horizontal"
        android:onClick="test"
        android:text="登录"
        android:textColor="#FFFFFF"
        android:textSize="32sp" />


</LinearLayout>

package com.example.woken;
import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;

public class MainActivity extends AppCompatActivity {
    //定义成员变量
    private EditText et_number;
    private EditText et_password;
    private Button btn_register;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        //找到界面上的组件
        et_number=findViewById(R.id.et_number);
        et_password=findViewById(R.id.et_password);
        btn_register=findViewById(R.id.btn_register);
    }
    public void test(View view){
        //把传递的数据存储在Intent对象里
        Intent intent=new Intent();
        intent.setClass(this,Main2Activity.class);
        intent.putExtra("number",et_number.getText().toString());
        intent.putExtra("password",et_password.getText().toString());
        startActivity(intent);
    }
}

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    android:id="@+id/ll"
    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=".Main2Activity">

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal"
        android:layout_marginTop="35dp"
        android:text="登陆成功"
        android:textColor="#1FBFFA"
        android:textSize="40sp" />

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="35dp"
        android:orientation="horizontal">

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="您的账号是: "
            android:textColor="#050505"
            android:textSize="35sp" />

        <TextView
            android:id="@+id/tv_number"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:textSize="35dp" />
    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="15dp"
        android:orientation="horizontal">

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="您的密码是: "
            android:textColor="#050505"
            android:textSize="35sp" />

        <TextView
            android:id="@+id/tv_password"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:textSize="35dp" />

    </LinearLayout>

</LinearLayout>

package com.example.woken;
import androidx.appcompat.app.AppCompatActivity;

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

public class Main2Activity extends AppCompatActivity {
    //定义成员变量
    private TextView tv_number;
    private TextView tv_password;
    private LinearLayout ll;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main2);
        //找到界面上的组件
        ll=findViewById(R.id.ll);
        tv_password=findViewById(R.id.tv_password);
        tv_number=findViewById(R.id.tv_number);
        //获取MainActivity传递过来的数据
        Intent intent=getIntent();
        tv_password.setText(intent.getStringExtra("password"));
        tv_number.setText(intent.getStringExtra("number"));
        //为ll创建点击事件，点击屏幕任地方关闭当前Activity
        ll.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                finish();
            }
        });
    }
}