实验7 多用户界面、菜单以及对话框程序设计

柔情只为你懂 2023-10-10 20:17 3阅读 0赞

## 实验内容 ##

1.设计一个具有两个页面的程序，第一个页面显示一张封面的图片，第二个页面显示“欢迎进入本系统”,这两个页面之间能相互切换。　　　  
2.设计一个具有3个选项的菜单程序，当单击每个选项时，分别跳转到3个不同的页面。  
3.设计一个具有计算器功能的对话框程序。

1.activity\_main.xml源代码：

MainActivity.java源代码：

package com.example.helloworld;
    import androidx.annotation.CheckResult;
    import androidx.appcompat.app.AppCompatActivity;
    
    import android.annotation.SuppressLint;
    import android.app.Activity;
    import android.provider.ContactsContract;
    import android.view.Gravity;
    import android.widget.Adapter;
    import android.widget.AdapterView;
    import android.widget.ArrayAdapter;
    import android.widget.LinearLayout;
    import android.widget.TextView;//文本标签
    import android.widget.Button;//按钮
    import android.widget.EditText;//文本编辑框
    import android.widget.Toast;
    import android.widget.ListView;
    import android.widget.ImageView;
    import android.view.View.OnClickListener;
    import android.widget.AdapterView.OnItemClickListener;
    import android.content.Intent;
    import org.w3c.dom.Text;
    
    public class MainActivity extends AppCompatActivity {
        
        private TextView txt,txt1,txt2,txt3,txt4,txt5;
        private Button button1,button2,button3,btn;
        private EditText edit1,edit2,edit3,edit4;
        ListView list;
        ProgressBar progress;
        @SuppressLint("MissingInflatedId")
        @Override
        protected void onCreate(Bundle savedInstanceState) {
        
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
            btn=(Button) findViewById(R.id.btn1);
            btn.setOnClickListener(new mClick());
        }
        class mClick implements OnClickListener{
        
            @Override
            public void onClick(View view) {
        
                Intent intent=new Intent(MainActivity.this,secondActivity.class);
                startActivity(intent);
            }
        }
    }
    
    secondActivity.java代码：
    package com.example.helloworld;
    import android.os.Bundle;
    import android.app.Activity;
    public class secondActivity extends Activity{
        
        public void onCreate(Bundle savedInstanceState){
        
            super.onCreate(savedInstanceState);
            setContentView(R.layout.second);
        }
    }

second.xml代码：

<?xml version="1.0" encoding="utf-8"?>
    <LinearLayout
        xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:orientation="vertical"
        android:layout_gravity="center_horizontal">
        <TextView
            android:id="@+id/txt"
            android:layout_width="wrap_content"
            android:layout_height="fill_parent"
            android:layout_gravity="center_horizontal"
            android:text="欢迎进入本系统"
            android:textSize="32sp" />
    </LinearLayout>

结果图：  
![请添加图片描述][f5e6a0dbd3004972a746e95194a14fdd.png]  
2.activity\_main.xml源代码：

<?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="fill_parent"
        android:layout_height="fill_parent"
        android:orientation="vertical"
        tools:context=".MainActivity">
    
        <TextView
            android:id="@+id/txt"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="我喜欢的音乐(点击跳转)"
            android:textSize="30sp"/>
        <Button
            android:id="@+id/btn1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="若把你"
            android:textSize="20sp" />
        <Button
            android:id="@+id/btn2"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="下个路口见"
            android:textSize="20sp" />
        <Button
            android:id="@+id/btn3"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Umbrella"
            android:textSize="20sp" />
    </LinearLayout>

MainActivity.java源代码：

package com.example.helloworld;
    import androidx.annotation.CheckResult;
    import androidx.appcompat.app.AppCompatActivity;
    import android.annotation.SuppressLint;
    import android.app.Activity;
    import android.graphics.Color;
    import android.provider.ContactsContract;
    import android.view.Gravity;
    import android.widget.Adapter;
    import android.widget.AdapterView;
    import android.widget.ArrayAdapter;
    import android.widget.LinearLayout;
    import android.widget.TextView;//文本标签
    import android.widget.Button;//按钮
    import android.widget.EditText;//文本编辑框
    import android.widget.Toast;
    import android.widget.ListView;
    import android.widget.ImageView;
    import android.os.Bundle;
    import android.view.View;
    import android.view.View.OnClickListener;
    import android.widget.AdapterView.OnItemClickListener;
    import android.content.Intent;
    
    import org.w3c.dom.Text;
    
    public class MainActivity extends AppCompatActivity {
        
        private TextView txt,txt1,txt2,txt3,txt4,txt5;
        private Button button1,button2,button3,btn;
        private EditText edit1,edit2,edit3,edit4;
        @SuppressLint("MissingInflatedId")
        @Override
        protected void onCreate(Bundle savedInstanceState) {
        
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
            button1=(Button)findViewById(R.id.btn1);
            button2=(Button)findViewById(R.id.btn2);
            button3=(Button)findViewById(R.id.btn3);
            button1.setOnClickListener(new mClick1());
            button2.setOnClickListener(new mClick2());
            button3.setOnClickListener(new mClick3());
        }
        class mClick1 implements OnClickListener{
        
            @Override
            public void onClick(View view) {
        
                Intent intent=new Intent(MainActivity.this,firstActivity.class);
                startActivity(intent);
            }
        }
        class mClick2 implements OnClickListener{
        
            @Override
            public void onClick(View view) {
        
                Intent intent=new Intent(MainActivity.this,secondActivity.class);
                startActivity(intent);
            }
        }
        class mClick3 implements OnClickListener{
        
            @Override
            public void onClick(View view) {
        
                Intent intent=new Intent(MainActivity.this,thirdActivity.class);
                startActivity(intent);
            }
        }
    }

first.xml代码：

<?xml version="1.0" encoding="utf-8"?>
    <LinearLayout
        xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:orientation="vertical"
        android:layout_gravity="center_horizontal">
    
        <ImageView
            android:id="@+id/image"
            android:layout_width="wrap_content"
            android:layout_height="fill_parent"
            android:src="@drawable/pic1" />
    
    </LinearLayout>

firstActivity.java代码：

package com.example.helloworld;
    import android.os.Bundle;
    import android.app.Activity;
    
    public class firstActivity extends Activity{
        
        public void onCreate(Bundle savedInstanceState){
        
            super.onCreate(savedInstanceState);
            setContentView(R.layout.first);
        }
    }

second.xml代码：

<?xml version="1.0" encoding="utf-8"?>
    <LinearLayout
        xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:orientation="vertical"
        android:layout_gravity="center_horizontal">
        <ImageView
            android:id="@+id/image"
            android:layout_width="wrap_content"
            android:layout_height="fill_parent"
            android:src="@drawable/pic2" />
    
    </LinearLayout>

secondActivity.java代码：

package com.example.helloworld;
    import android.os.Bundle;
    import android.app.Activity;
    
    public class secondActivity extends Activity{
        
        public void onCreate(Bundle savedInstanceState){
        
            super.onCreate(savedInstanceState);
            setContentView(R.layout.second);
        }
    }

third.xml代码：

<?xml version="1.0" encoding="utf-8"?>
    <LinearLayout
        xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:orientation="vertical"
        android:layout_gravity="center_horizontal">
        <ImageView
            android:id="@+id/image"
            android:layout_width="wrap_content"
            android:layout_height="fill_parent"
            android:src="@drawable/pic3" />
    
    </LinearLayout>

thirdActivity.java代码：

package com.example.helloworld;
    import android.os.Bundle;
    import android.app.Activity;
    
    public class thirdActivity extends Activity{
        
        public void onCreate(Bundle savedInstanceState){
        
            super.onCreate(savedInstanceState);
            setContentView(R.layout.third);
        }
    }

需要注意的是切换多个页面时，要在AndroidManifest.xml  
中添加对应的xml的注册  
![请添加图片描述][aa62bd0da2c94431a1baab831234bf8d.png]

结果图：  
![请添加图片描述][06c484838c724172a5aa4d2e6b62aedb.png]  
3.MainActivity.java代码：

package com.example.helloworld;
    import androidx.annotation.CheckResult;
    import androidx.appcompat.app.AppCompatActivity;
    
    import android.annotation.SuppressLint;
    import android.app.Activity;
    import android.graphics.Color;
    import android.provider.ContactsContract;
    import android.view.Gravity;
    import android.widget.Adapter;
    import android.widget.AdapterView;
    import android.widget.ArrayAdapter;
    import android.widget.CheckBox;
    import android.widget.LinearLayout;
    import android.widget.ProgressBar;
    import android.widget.RadioButton;
    import android.widget.TextView;//文本标签
    import android.widget.Button;//按钮
    import android.widget.EditText;//文本编辑框
    import android.widget.Toast;
    import android.widget.ListView;
    import android.widget.ImageView;
    import android.os.Bundle;
    import android.view.View;
    import android.view.View.OnClickListener;
    import android.widget.AdapterView.OnItemClickListener;
    import android.content.Intent;
    import android.app.AlertDialog;
    import android.content.DialogInterface;
    
    import org.w3c.dom.Text;
    
    public class MainActivity extends AppCompatActivity {
        
        private TextView txt,txt1,txt2,txt3,txt4,txt5;
        private Button button1,button2,button3,btn;
        private EditText edit1,edit2,edit3,edit4;
        LinearLayout com;
        @SuppressLint("MissingInflatedId")
        @Override
        protected void onCreate(Bundle savedInstanceState) {
        
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
            button1=(Button)findViewById(R.id.btn1);
            button1.setOnClickListener(new mClick1());
        }
        class mClick1 implements OnClickListener{
        
            AlertDialog.Builder dialog=new AlertDialog.Builder(MainActivity.this);
            @Override
            public void onClick(View view) {
        
                com=(LinearLayout)getLayoutInflater().inflate(R.layout.compute,null);
                dialog.setTitle("计算机对话框").setView(com);
                dialog.setPositiveButton("显示结果",new resClick());
                dialog.create();
                dialog.show();
            }
        }
        class resClick implements DialogInterface.OnClickListener{
        
            EditText e1=(EditText)com.findViewById(R.id.myEditText1);
            EditText e2=(EditText)com.findViewById(R.id.myEditText2);
            @Override
            public void onClick(DialogInterface dialog, int i) {
        
                String str1=e1.getText().toString();
                String str2=e2.getText().toString();
                int a=Integer.parseInt(str1);
                int b=Integer.parseInt(str2);
                int c=a+b;
                Toast.makeText(getApplicationContext(),Integer.toString(c),Toast.LENGTH_LONG).show();
                dialog.dismiss();
            }
        }
    }

activity\_main.xml代码：

compute.xml代码：

<?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="fill_parent"
        android:layout_height="fill_parent"
        tools:context=".MainActivity"
        android:orientation="vertical"
        android:gravity="center|fill">
        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_gravity="center_horizontal"
            android:gravity="center_horizontal"
            android:orientation="horizontal">
    
            <EditText
                android:id="@+id/myEditText1"
                android:layout_width="40dp"
                android:layout_height="50dp"
                android:layout_x="50dp"
                android:layout_y="50dp"
                android:autofillHints=""
                android:inputType="number"
                android:textSize="24sp"
                tools:ignore="LabelFor,SpeakableTextPresentCheck,TouchTargetSizeCheck" />
    
            <TextView
                android:id="@+id/textview1"
                android:layout_width="25dp"
                android:layout_height='59dp'
                android:text="+"
                android:textSize="24sp" />
            <EditText
                android:id="@+id/myEditText2"
                android:layout_width="40dp"
                android:layout_height="50dp"
                android:layout_x="50dp"
                android:layout_y="50dp"
                android:inputType="number"
                android:textSize="24sp"
                tools:ignore="SpeakableTextPresentCheck,TouchTargetSizeCheck" />
            
        </LinearLayout>
    </LinearLayout>

结果：  
![请添加图片描述][c740f6ce1e2b4487a7b4a22526a34869.png]

[f5e6a0dbd3004972a746e95194a14fdd.png]: https://img-blog.csdnimg.cn/f5e6a0dbd3004972a746e95194a14fdd.png
[aa62bd0da2c94431a1baab831234bf8d.png]: https://img-blog.csdnimg.cn/aa62bd0da2c94431a1baab831234bf8d.png
[06c484838c724172a5aa4d2e6b62aedb.png]: https://img-blog.csdnimg.cn/06c484838c724172a5aa4d2e6b62aedb.png
[c740f6ce1e2b4487a7b4a22526a34869.png]: https://img-blog.csdnimg.cn/c740f6ce1e2b4487a7b4a22526a34869.png