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  • Android第三次作业

    <?xml version="1.0" encoding="utf-8"?>
    <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="@mipmap/p04">
    
        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginTop="30dp"
            android:orientation="vertical"
            android:padding="30dp">
            <TextView
                android:id="@+id/text1"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:drawableLeft="@mipmap/p22"
                android:text="QQ"
                android:textSize="40sp" />
            <EditText
                android:id="@+id/edt1"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:layout_marginTop="35dp"
                android:hint="QQ号/邮箱/手机号" />
            <EditText
                android:id="@+id/edt2"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:hint="密码"
                android:password="true"/>
    
            <RelativeLayout
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_marginTop="10dp">
    
                <TextView
                    android:id="@+id/text2"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:text="忘记密码?"
                    android:textColor="#00aaff" />
    
                <TextView
                    android:id="@+id/text3"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_alignParentRight="true"
                    android:text="新用户注册"
                    android:textColor="#00aaff" />
            </RelativeLayout>
            <Button
                android:id="@+id/btn1"
                android:layout_width="match_parent"
                android:layout_margin="10dp"
                android:layout_height="40dp"
                android:text="登录"
                android:textSize="20sp"
                android:background="#87CEFF"
                android:onClick="click"
                />
    
        </LinearLayout>
    
    
    
            <TextView
                android:id="@+id/text4"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_alignParentBottom="true"
                android:layout_marginBottom="30dp"
                android:text="登陆即代表阅读并同意"
                android:layout_marginLeft="56dp"
                android:textColor="#FFFAFA"
                android:textSize="20sp" />
            <TextView
                android:id="@+id/text5"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_alignParentBottom="true"
                android:layout_toRightOf="@+id/text4"
                android:layout_marginBottom="30dp"
                android:text="阅读条款"
                android:textColor="#00aaff"
                android:textSize="20sp" />
    
    
    
    </RelativeLayout>
    package com.example.myqq;
    import androidx.appcompat.app.AppCompatActivity;
    import android.os.Bundle;
    import android.view.View.OnClickListener;
    import android.view.View;
    import android.widget.EditText;
    import android.widget.LinearLayout;
    import android.widget.TextView;
    import android.widget.Button;
    import android.widget.Toast;
    
    public class MainActivity extends AppCompatActivity {
        private Button btn1;
        EditText account = null;
        EditText code = null;
        EditText t1;
    
    
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
            t1=(EditText) findViewById(R.id.edt1);
            account = (EditText) findViewById(R.id.edt1);
            code = (EditText) findViewById(R.id.edt2);
            btn1=(Button) findViewById(R.id.btn1);
            btn1.setOnClickListener(new OnClickListener() {
                @Override
                public void onClick(View view) {
                    String username = ((EditText) findViewById(R.id.edt1)).getText().toString();
                    String pwd = ((EditText) findViewById(R.id.edt2)).getText().toString();
                    if (username.equals("123456") && pwd.equals("123456")) {
                        Toast.makeText(MainActivity.this,"登陆成功",Toast.LENGTH_SHORT).show();
    
                    } else {
                        t1.setText("账号或密码错误请重新输入");
                        Toast.makeText(MainActivity.this,"登陆失败",Toast.LENGTH_SHORT).show();
                    }
                }
    
            });
    
    
        }
    }

    初始界面

    登录错误界面

    登陆成功界面

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  • 原文地址:https://www.cnblogs.com/mengjia0513/p/11481295.html
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