4.23打卡

结对作业
• 所花时间：1
• 代码行数：487
• 博客容量：1
• 代码如下：

package com.example.subway;

import android.content.Intent;
import android.os.Bundle;
import android.view.View;

import androidx.activity.EdgeToEdge;
import androidx.appcompat.app.AppCompatActivity;
import androidx.core.graphics.Insets;
import androidx.core.view.ViewCompat;
import androidx.core.view.WindowInsetsCompat;

public class MainActivity extends AppCompatActivity implements View.OnClickListener {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        findViewById(R.id.bt_all).setOnClickListener(this);
        findViewById(R.id.bt_search).setOnClickListener(this);
    }

    @Override
    public void onClick(View v) {
        if(v.getId()== R.id.bt_all){
            Intent intent=new Intent(this,getAll.class);
            startActivity(intent);
        } else if (v.getId()==R.id.bt_search) {
            Intent intent=new Intent(this,searchLine.class);
            startActivity(intent);
        }
    }
}
<?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:id="@+id/main"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:background="@color/black">

    <TextView
        android:layout_marginTop="50dp"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="地铁查询系统"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        android:textSize="30sp"
        android:textColor="#ffffff"
        android:layout_gravity="center"
        android:layout_marginBottom="50dp"
        />
    <Button
        android:id="@+id/bt_all"
        android:layout_width="230dp"
        android:layout_height="70dp"
        android:background="@drawable/my_button"
        android:layout_gravity="center"
        android:text="查看所有线路"
        android:textSize="20sp"
        android:textColor="@color/white"
        android:layout_marginTop="50dp"
        android:layout_marginBottom="50dp"
        />
    <Button
        android:textColor="@color/white"
        android:id="@+id/bt_search"
        android:layout_width="230dp"
        android:layout_height="70dp"
        android:background="@drawable/my_button"
        android:layout_gravity="center"
        android:text="查询路线"
        android:textSize="20sp"
        android:layout_marginTop="50dp"
        />
</LinearLayout>