android单选按钮使用

朱雀 2022-07-17 02:45 225阅读 0赞

# android单选按钮使用 #

单选按钮使用的时候首先需要增加一个radiobuttongroup然后在里面添加radiobutton.

具体的使用如下：

package xueyou.xueyoucto.com.androidviews;
    
    
    import android.support.v7.app.AppCompatActivity;
    import android.os.Bundle;
    import android.util.Log;
    import android.view.MotionEvent;
    import android.view.View;
    import android.widget.Button;
    import android.widget.RadioButton;
    import android.widget.Toast;
    
    public class MainActivity extends AppCompatActivity {
        private final String Tag = "MAINACTIVITY";
    
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
        }
    
        public void radiobuttonClick(View v) {
            RadioButton radioButton = (RadioButton) v;
            boolean isChecked = radioButton.isChecked();
            switch (v.getId()) {
                case R.id.radioButton1:
                    if (isChecked) {
                        Toast.makeText(MainActivity.this, radioButton.getText(), Toast.LENGTH_SHORT).show();
                    }
                    break;
                case R.id.radioButton2:
                    if (isChecked) {
                        Toast.makeText(MainActivity.this, radioButton.getText(), Toast.LENGTH_SHORT).show();
                    }
                    break;
                case R.id.radioButton3:
                    if (isChecked) {
                        Toast.makeText(MainActivity.this, radioButton.getText(), Toast.LENGTH_SHORT).show();
                    }
                    break;
            }
        }
    
    }

<?xml version="1.0" encoding="utf-8"?>
    <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:tools="http://schemas.android.com/tools"
        android:id="@+id/mainRelativeLayout"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:paddingBottom="@dimen/activity_vertical_margin"
        android:paddingLeft="@dimen/activity_horizontal_margin"
        android:paddingRight="@dimen/activity_horizontal_margin"
        android:paddingTop="@dimen/activity_vertical_margin"
        tools:context="xueyou.xueyoucto.com.androidviews.MainActivity">
    
    
        <TextView
            android:id="@+id/textView"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="性别"
            android:textSize="20sp"
            android:layout_alignBottom="@+id/radioGroup"
            android:layout_alignParentLeft="true"
            android:layout_alignParentStart="true" />
    
        <RadioGroup
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="46dp"
            android:layout_marginStart="46dp"
            android:layout_toEndOf="@+id/textView"
            android:layout_toRightOf="@+id/textView"
            android:orientation="horizontal"
            android:id="@+id/radioGroup">
    
            <RadioButton
                android:id="@+id/radioButton1"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:onClick="radiobuttonClick"
                android:text="男" />
    
            <RadioButton
                android:id="@+id/radioButton2"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:onClick="radiobuttonClick"
                android:text="女" />
    
            <RadioButton
                android:id="@+id/radioButton3"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:onClick="radiobuttonClick"
                android:text="保密" />
        </RadioGroup>
    </RelativeLayout>

运行结果:

![Center][]

[Center]: /images/20220717/92c9038017884a7bbc65fa9b02bc61f7.png