实验4：按钮、文本标签、文本编辑框等组件使用

ゝ一世哀愁。 2023-10-10 20:13 38阅读 0赞

## 实验内容和步骤 ##

![请添加图片描述][f56066cd12ba40609418da5fd08a01b0.png]  
![请添加图片描述][a5f3bfcc048a4b55af79d6a904d0a088.png]

activity\_main.xml源代码：

MainActivity.java源代码：

package com.example.helloworld;
    import androidx.appcompat.app.AppCompatActivity;
    import android.app.Activity;
    import android.graphics.Color;
    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.os.Bundle;
    import android.view.View;
    import android.view.View.OnClickListener;
    import org.w3c.dom.Text;
    
    public class MainActivity extends AppCompatActivity {
        
        private TextView txt1,txt2;
        private Button mButton1;
        private EditText edit;
        @Override
        protected void onCreate(Bundle savedInstanceState) {
        
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
            //txt1=(TextView)findViewById(R.id.textView1);
            txt2=(TextView)findViewById(R.id.textview2);
            edit= (EditText)findViewById(R.id.myEditText);
            mButton1=(Button)findViewById(R.id.myButton);
            mButton1.setOnClickListener(new mClick());
        }
        class mClick implements OnClickListener{
        
            public void onClick(View v){
        
                String password;
                password=edit.getText().toString();
                txt2.setText(password);
            }
        }
    }

结果图：  
![请添加图片描述][3de0ae5f70bf4bacaf694eec47a5bc03.png]

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"
        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="20dp"
                android:layout_height='50dp'
                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" />
            <Button
                android:id="@+id/myButton"
                android:layout_width="50dp"
                android:layout_height="wrap_content"
                android:text="="
                android:textSize="30sp"/>
    
            <TextView
                android:id="@+id/textview2"
                android:layout_width="50dp"
                android:layout_height="50dp"
                android:layout_x="50dp"
                android:layout_y="50dp"
                android:minWidth="48dp"
                android:textSize="24sp"
                tools:ignore="SpeakableTextPresentCheck" />
        </LinearLayout>
    </LinearLayout>

MainActivity.java源代码：

package com.example.helloworld;
    import androidx.appcompat.app.AppCompatActivity;
    import android.annotation.SuppressLint;
    import android.app.Activity;
    import android.graphics.Color;
    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.os.Bundle;
    import android.view.View;
    import android.view.View.OnClickListener;
    import org.w3c.dom.Text;
    
    public class MainActivity extends AppCompatActivity {
        
        private TextView txt1,txt2;
        private Button mButton1;
        private EditText edit1,edit2,edit3;
        @SuppressLint("MissingInflatedId")
        @Override
        protected void onCreate(Bundle savedInstanceState) {
        
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
            txt1=(TextView)findViewById(R.id.textview1);
            txt2=(TextView)findViewById(R.id.textview2);
            edit1=(EditText)findViewById(R.id.myEditText1);
            edit2=(EditText)findViewById(R.id.myEditText2);
            mButton1=(Button)findViewById(R.id.myButton);
            mButton1.setOnClickListener(new mClick());
        }
        class mClick implements OnClickListener{
        
            public void onClick(View v){
        
                String str1=edit1.getText().toString();
                String str2=edit2.getText().toString();
                //System.out.println(str1+"\n"+str2);
                int a=Integer.parseInt(str1);
                int b=Integer.parseInt(str2);
                //System.out.println(a+"\n"+b);
                txt2.setText(Integer.toString(a+b));
            }
        }
    }

结果图：  
![请添加图片描述][9d833e5a0a2845f99a47946ace2f304a.png]

activity\_main.xml源代码：

<?xml version="1.0" encoding="utf-8"?>
    <RelativeLayout 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">
        <TextView
            android:id="@+id/textview1"
            android:layout_width="80dp"
            android:layout_height='40dp'
            android:layout_alignParentLeft="true"
            android:layout_alignParentTop="true"
            android:layout_marginLeft="15dp"
            android:text="姓名："
            android:textSize="24sp"
            tools:ignore="DuplicateIds" />
        <EditText
            android:id="@+id/myEditText1"
            android:layout_width="120dp"
            android:layout_height="40dp"
            android:layout_toRightOf="@+id/textview1"
            android:layout_x="150dp"
            android:layout_y="50dp"
            android:textSize="54sp"
    tools:ignore="LabelFor,SpeakableTextPresentCheck,TouchTargetSizeCheck,DuplicateClickableBoundsCheck" />
        <TextView
            android:id="@+id/textview2"
            android:layout_width="80dp"
            android:layout_height="40dp"
            android:layout_below="@+id/textview1"
            android:layout_marginLeft="15dp"
            android:layout_x="50dp"
            android:layout_y="50dp"
            android:text="性别："
            android:textSize="24sp"
            tools:ignore="SpeakableTextPresentCheck" />
        <EditText
            android:id="@+id/myEditText2"
            android:layout_width="120dp"
            android:layout_height="40dp"
            android:layout_below="@id/myEditText1"
            android:layout_toRightOf="@+id/textview2"
            android:layout_x="50dp"
            android:layout_y="50dp"
            android:textSize="24sp"
            tools:ignore="SpeakableTextPresentCheck,TouchTargetSizeCheck" />
        <TextView
            android:id="@+id/textview3"
            android:layout_width="160dp"
            android:layout_height="95dp"
            android:layout_alignParentTop="true"
            android:layout_alignParentRight="true"
            android:layout_marginTop="2dp"
            android:layout_marginRight="2dp"
            android:layout_marginBottom="465dp"
            android:text="照片"
            android:textSize="24sp" />
        <TextView
            android:id="@+id/textview4"
            android:layout_width="120dp"
            android:layout_height="40dp"
            android:layout_below="@+id/textview2"
            android:layout_marginLeft="15dp"
            android:layout_marginTop="20dp"
            android:text="家庭住址："
            android:textSize="24sp"
            tools:ignore="SpeakableTextPresentCheck" />
        <EditText
            android:id="@+id/myEditText3"
            android:layout_width="240dp"
            android:layout_height="40dp"
            android:layout_below="@id/myEditText2"
            android:layout_marginTop="20dp"
            android:layout_toRightOf="@+id/textview4"
            android:layout_x="150dp"
            android:layout_y="150dp"
            android:textSize="24sp"
    tools:ignore="SpeakableTextPresentCheck,TouchTargetSizeCheck,DuplicateClickableBoundsCheck" />
        <TextView
            android:id="@+id/textview5"
            android:layout_width="120dp"
            android:layout_height="40dp"
            android:layout_below="@id/textview4"
            android:layout_marginLeft="15dp"
            android:text="联系电话："
            android:textSize="24sp"
            tools:ignore="SpeakableTextPresentCheck" />
        <EditText
            android:id="@+id/myEditText4"
            android:layout_width="240dp"
            android:layout_height="40dp"
            android:layout_below="@id/myEditText3"
            android:layout_toRightOf="@id/textview5"
            android:textSize="24sp"
            tools:ignore="SpeakableTextPresentCheck,TouchTargetSizeCheck" />
    
    </RelativeLayout>

MainActivity.java源代码：

package com.example.helloworld;
    import androidx.appcompat.app.AppCompatActivity;
    
    import android.annotation.SuppressLint;
    import android.app.Activity;
    import android.graphics.Color;
    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.os.Bundle;
    import android.view.View;
    import android.view.View.OnClickListener;
    import org.w3c.dom.Text;
    
    public class MainActivity extends AppCompatActivity {
        
        private TextView txt1,txt2,txt3,txt4,txt5;
        private Button mButton1;
        private EditText edit1,edit2,edit3,edit4;
        @SuppressLint("MissingInflatedId")
        @Override
        protected void onCreate(Bundle savedInstanceState) {
        
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
            txt1=(TextView)findViewById(R.id.textview1);
            txt2=(TextView)findViewById(R.id.textview2);
            txt3=(TextView)findViewById(R.id.textview3);
            txt4=(TextView)findViewById(R.id.textview4);
            txt5=(TextView)findViewById(R.id.textview5);
            edit1=(EditText)findViewById(R.id.myEditText1);
            edit2=(EditText)findViewById(R.id.myEditText2);
            edit3=(EditText)findViewById(R.id.myEditText3);
            edit4=(EditText)findViewById(R.id.myEditText4);
        }
    }

结果图：  
![请添加图片描述][2381c4603e25495291b9a1c0d2cc0c02.png]

[f56066cd12ba40609418da5fd08a01b0.png]: https://img-blog.csdnimg.cn/f56066cd12ba40609418da5fd08a01b0.png
[a5f3bfcc048a4b55af79d6a904d0a088.png]: https://img-blog.csdnimg.cn/a5f3bfcc048a4b55af79d6a904d0a088.png
[3de0ae5f70bf4bacaf694eec47a5bc03.png]: https://img-blog.csdnimg.cn/3de0ae5f70bf4bacaf694eec47a5bc03.png
[9d833e5a0a2845f99a47946ace2f304a.png]: https://img-blog.csdnimg.cn/9d833e5a0a2845f99a47946ace2f304a.png
[2381c4603e25495291b9a1c0d2cc0c02.png]: https://img-blog.csdnimg.cn/2381c4603e25495291b9a1c0d2cc0c02.png