学习记录（3.22）

　　学习时长：6h

　　代码行数：约200行

　　今天上午继续学习网络传输的相应知识，之后学习毛概，为考研课打下了相应的基础。

　　下午制作了安卓的基础页面，并且跟同伴进行了页面布置的构思。

　　晚上跟乐队成员一起进行编曲，把《way back home》进行了放克化简单改编，到时候在音乐节上演出。

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_gravity="center"
    android:orientation="vertical">
    <LinearLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:orientation="vertical">
        <Button
            android:id="@+id/btn_line"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="查询地铁线路"/>
        <Button
            android:id="@+id/btn_station"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="查询地铁站"/>
        <Button
            android:id="@+id/btn_chaxun"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="查询地铁路径"/>
    </LinearLayout>
</LinearLayout>

package com.example.subway;
 
import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
 
public class Menu extends AppCompatActivity implements View.OnClickListener {
 
    private Button line1;
    private Button line2;
    private Button line3;
 
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_menu);
        line1 = findViewById(R.id.btn_line);
        line1.setOnClickListener(this);
        line2 = findViewById(R.id.btn_station);
        line2.setOnClickListener(this);
        line3 = findViewById(R.id.btn_chaxun);
        line3.setOnClickListener(this);
    }
 
    @Override
    public void onClick(View view) {
        Intent intent = new Intent();
        switch (view.getId()){
            case R.id.btn_line:
                intent.setClass(Menu.this, Line.class);
                startActivity(intent);
                break;
            case R.id.btn_station:
                intent.setClass(Menu.this, Station.class);
                startActivity(intent);
                break;
            case R.id.btn_chaxun:
                intent.setClass(Menu.this, StartEnd.class);
                startActivity(intent);
                break;
        }
    }
}

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:gravity="center"
    >
    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="欢迎使用地铁查询系统"
        android:textSize="40dp"/>
    <Button
        android:id="@+id/btn_kaishi"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="进入系统"
        android:background="@color/teal_200"/>
</LinearLayout>

package com.example.subway;
 
import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
 
public class MainActivity extends AppCompatActivity implements View.OnClickListener {
 
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Button button = findViewById(R.id.btn_kaishi);
        button.setOnClickListener(this);
    }
 
    @Override
    public void onClick(View view) {
        Intent intent = new Intent();
        intent.setClass(MainActivity.this,Menu.class);
        startActivity(intent);
    }
}