作业 7 QQ登录

<?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="wrap_content"
    android:layout_height="wrap_content"
    tools:context=".MainActivity"
    android:background="#f7f7f7"
    android:orientation="vertical"
    >
<RelativeLayout
    android:layout_width="match_parent"
    android:layout_height="match_parent">
    <ImageView
        android:id="@+id/imageView3"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="80dp"
        android:layout_centerHorizontal="true"
        app:srcCompat="@mipmap/xlaj" />
</RelativeLayout>
   <LinearLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="horizontal"
    >
    <TextView
        android:id="@+id/textView"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:text="账号"
        android:textSize="25sp"
        android:layout_weight="2"
        />
    <EditText
        android:id="@+id/editText"
        android:layout_width="0dp"
        android:layout_height="50dp"
        android:layout_weight="11"
        />

</LinearLayout>
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        >

        <TextView
            android:id="@+id/textView3"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:text="密码"
            android:textSize="25sp"
            android:layout_weight="2"
            />
        <EditText
            android:id="@+id/editText2"
            android:layout_width="0dp"
            android:layout_height="50dp"
            android:layout_weight="11"
            />

    </LinearLayout>

<RelativeLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content">
    <Button
        android:id="@+id/button"
        android:layout_width="380dp"
        android:layout_height="wrap_content"
        android:text="登录"
        android:background="#248dc1"
        android:onClick="click"
        android:layout_centerHorizontal="true"
        />
</RelativeLayout>
</LinearLayout>
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<?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=".Main2Activity">
   <LinearLayout
       android:layout_width="match_parent"
       android:layout_height="wrap_content"
       android:orientation="vertical"
       android:layout_centerInParent="true">
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        >
        <TextView
            android:id="@+id/textView"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:text="输入的账号为"
            android:textSize="25sp"
            android:layout_weight="7"
            />
        <TextView
            android:id="@+id/editText"
            android:layout_width="0dp"
            android:layout_height="50dp"
            android:layout_weight="11"
            android:text=" "
            />

    </LinearLayout>
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        >
        <TextView
            android:id="@+id/textView3"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:text="输入的密码为"
            android:textSize="25sp"
            android:layout_weight="7"
            />
        <TextView
            android:id="@+id/editText2"
            android:layout_width="0dp"
            android:layout_height="50dp"
            android:layout_weight="11"
            android:text=""
            />
    </LinearLayout>
</LinearLayout>
</RelativeLayout>

package cn.itcase.qq;

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;
import android.widget.TextView;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {
    private Button button;
    private EditText editText, editText2;
    private  TextView textView2;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        button = (Button) findViewById(R.id.button);
        editText = (EditText) findViewById(R.id.editText);
        editText2 = (EditText) findViewById(R.id.editText2);
    }
    public void  click(View view){
        String ID="123456";
        String PassWord="abc123";
        String s1=editText.getText().toString();
        String s2=editText2.getText().toString();
        if (ID.equals(s1)&&PassWord.equals(s2)) {
            Toast.makeText(MainActivity.this, "登陆成功", Toast.LENGTH_SHORT).show();
        }
        else {
            Toast.makeText(MainActivity.this, "登录失败", Toast.LENGTH_SHORT).show();
        }
        Intent intent =new Intent(MainActivity.this,Main2Activity.class);
        intent.putExtra("zh",s1);
        intent.putExtra("mm",s2);
        startActivity(intent);
    }

}
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package cn.itcase.qq;

import androidx.appcompat.app.AppCompatActivity;

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

public class Main2Activity extends AppCompatActivity {
    private TextView editText, editText2;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main2);
        editText = (TextView) findViewById(R.id.editText);
        editText2 = (TextView) findViewById(R.id.editText2);
        Intent intent=getIntent();
        String zh=intent.getStringExtra("zh");
        String mm=intent.getStringExtra("mm");
        editText.setText(zh);
        editText2.setText(mm);
    }

}