中级控件——单选按钮RadioButton——vertical方向

ゝ一纸荒年。 2023-09-28 14:30 58阅读 0赞

<?xml version="1.0" encoding="utf-8"?>
    <selector xmlns:android="http://schemas.android.com/apk/res/android">
        <item android:state_checked="true" android:drawable="@drawable/radio_choose"/>
        <item android:drawable="@drawable/radio_unchoose"/>
    </selector>

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package com.example.myapplication;
    
    import android.support.v7.app.AppCompatActivity;
    import android.os.Bundle;
    import android.widget.RadioGroup;
    import android.widget.TextView;
    
    
    // 该页面实现了接口OnCheckedChangeListener，意味着要重写选中监听器的onCheckedChanged方法
    public class MainActivity extends AppCompatActivity implements RadioGroup.OnCheckedChangeListener
    {
        private TextView tv_marry; // 声明一个文本视图对象
    
        @Override
        protected void onCreate(Bundle savedInstanceState)
        {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
    
    
            // 从布局文件中获取名叫tv_marry的文本视图
            tv_marry = findViewById(R.id.tv_marry);
    
            // 从布局文件中获取名叫rg_marry的单选组
            RadioGroup rg_marry = findViewById(R.id.rg_marry);
    
            // 给rg_marry设置单选监听器，一旦用户点击组内的单选按钮，就触发监听器的onCheckedChanged方法
            rg_marry.setOnCheckedChangeListener(this);
        }
    
        // 在用户点击组内的单选按钮时触发
        public void onCheckedChanged(RadioGroup group, int checkedId)
        {
            if (checkedId == R.id.rb_married)
            {
                tv_marry.setText("哇哦，祝你早生贵子");
    
            } else if (checkedId == R.id.rb_unmarried)
            {
                tv_marry.setText("哇哦，你的前途不可限量");
            }
        }
    
    }

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[a4fb94f81a00e5772d23d5ccbfd05c7e.png]: https://img-blog.csdnimg.cn/img_convert/a4fb94f81a00e5772d23d5ccbfd05c7e.png
[5979c4564ae94f4beb9e169fd0f6aeec.png]: https://img-blog.csdnimg.cn/img_convert/5979c4564ae94f4beb9e169fd0f6aeec.png
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[f12f507449f0300c07b4331070823867.png]: https://img-blog.csdnimg.cn/img_convert/f12f507449f0300c07b4331070823867.png
[22ffb520e69b6858214fcf4533641a13.png]: https://img-blog.csdnimg.cn/img_convert/22ffb520e69b6858214fcf4533641a13.png
[92f83766c8a04ce08723af4ccf94351e.png]: https://img-blog.csdnimg.cn/img_convert/92f83766c8a04ce08723af4ccf94351e.png
[4c1a7de5c6cd4d0fabc7177e3d575b36.png]: https://img-blog.csdnimg.cn/img_convert/4c1a7de5c6cd4d0fabc7177e3d575b36.png
[44de153af01f69217ae8686f8c3981a3.png]: https://img-blog.csdnimg.cn/img_convert/44de153af01f69217ae8686f8c3981a3.png