最近做的一个项目中的业务需要一个单选框显示多个选择项，而且需要多行多列显示。
研究了一下谷歌给的demo，需要多个radiogroup协同控制， 这样增加了许多逻辑判断，不是很方便。从网上搜寻到了一些方法结合自己的实际测试，发现一个比较方便的实现方法。
参考：https://blog.csdn.net/nihaoqiulinhe/article/details/53943249
源码：https://github.com/luckylicy/radiogroup
效果如下：
源码如下：
布局文件
<?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="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context=".MainActivity">
<View
android:layout_width="match_parent"
android:layout_height="1dp"
android:layout_marginTop="20dp"
android:background="#000000" />
<RadioGroup
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<RadioButton
android:id="@+id/rb_1"
android:layout_width="wrap_content"
android:layout_height="30dp"
android:text="radio1" />
<RadioButton
android:id="@+id/rb_2"
android:layout_width="wrap_content"
android:layout_height="30dp"
android:text="radio2" />
<View
android:layout_width="match_parent"
android:layout_height="1dp"
android:background="#000000" />
<RadioButton
android:id="@+id/rb_3"
android:layout_width="wrap_content"
android:layout_height="30dp"
android:text="radio3" />
<RadioButton
android:id="@+id/rb_4"
android:layout_width="wrap_content"
android:layout_height="30dp"
android:text="radio4" />
<RadioButton
android:id="@+id/rb_5"
android:layout_width="wrap_content"
android:layout_height="30dp"
android:text="radio5" />
<View
android:layout_width="match_parent"
android:layout_height="1dp"
android:background="#000000" />
<RadioButton
android:id="@+id/rb_6"
android:layout_width="wrap_content"
android:layout_height="30dp"
android:text="radio6" />
<RadioButton
android:id="@+id/rb_7"
android:layout_width="wrap_content"
android:layout_height="30dp"
android:text="radio7" />
<RadioButton
android:id="@+id/rb_8"
android:layout_width="wrap_content"
android:layout_height="30dp"
android:text="radio8" />
<RadioButton
android:id="@+id/rb_9"
android:layout_width="wrap_content"
android:layout_height="30dp"
android:text="radio9" />
<View
android:layout_width="match_parent"
android:layout_height="1dp"
android:background="#000000" />
<RadioButton
android:id="@+id/rb_10"
android:layout_width="wrap_content"
android:layout_height="30dp"
android:text="radio10" />
<RadioButton
android:id="@+id/rb_11"
android:layout_width="wrap_content"
android:layout_height="30dp"
android:text="radio11" />
<RadioButton
android:id="@+id/rb_12"
android:layout_width="wrap_content"
android:layout_height="30dp"
android:text="radio12" />
<RadioButton
android:id="@+id/rb_13"
android:layout_width="wrap_content"
android:layout_height="30dp"
android:text="radio13" />
<View
android:layout_width="match_parent"
android:layout_height="1dp"
android:background="#000000" />
</RadioGroup>
</LinearLayout>Activity文件
package app.licy.rg.radiogroup;
import android.content.Context;
import android.graphics.Point;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.WindowManager;
import android.widget.LinearLayout;
import android.widget.RadioButton;
import butterknife.BindView;
import butterknife.ButterKnife;
/**
* MainActivity
*
* @author : Licy
* @date : 2019年4月9日
* email ：[email protected]
*/
public class MainActivity extends AppCompatActivity {
@BindView(R.id.rb_1)
RadioButton rb1;
@BindView(R.id.rb_2)
RadioButton rb2;
@BindView(R.id.rb_3)
RadioButton rb3;
@BindView(R.id.rb_4)
RadioButton rb4;
@BindView(R.id.rb_5)
RadioButton rb5;
@BindView(R.id.rb_6)
RadioButton rb6;
@BindView(R.id.rb_7)
RadioButton rb7;
@BindView(R.id.rb_8)
RadioButton rb8;
@BindView(R.id.rb_9)
RadioButton rb9;
@BindView(R.id.rb_10)
RadioButton rb10;
@BindView(R.id.rb_11)
RadioButton rb11;
@BindView(R.id.rb_12)
RadioButton rb12;
@BindView(R.id.rb_13)
RadioButton rb13;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ButterKnife.bind(this);
initRadioButtons();
}
public void initRadioButtons() {
WindowManager windowManager = getWindowManager();
Point point = new Point();
windowManager.getDefaultDisplay().getSize(point);
int width = point.x;
// 这里设置的是radio button的高度
int height = dpToPx(this, 30);
LinearLayout.LayoutParams params2 = (LinearLayout.LayoutParams) rb2.getLayoutParams();
params2.setMargins(width / 2, -height, 0, 0);
rb2.setLayoutParams(params2);
LinearLayout.LayoutParams params4 = (LinearLayout.LayoutParams) rb4.getLayoutParams();
params4.setMargins(width / 3, -height, 0, 0);
rb4.setLayoutParams(params4);
LinearLayout.LayoutParams params5 = (LinearLayout.LayoutParams) rb5.getLayoutParams();
params5.setMargins((width / 3) * 2, -height, 0, 0);
rb5.setLayoutParams(params5);
LinearLayout.LayoutParams params7 = (LinearLayout.LayoutParams) rb7.getLayoutParams();
params7.setMargins(width / 4, -height, 0, 0);
rb7.setLayoutParams(params7);
LinearLayout.LayoutParams params8 = (LinearLayout.LayoutParams) rb8.getLayoutParams();
params8.setMargins((width / 4) * 2, -height, 0, 0);
rb8.setLayoutParams(params8);
LinearLayout.LayoutParams params9 = (LinearLayout.LayoutParams) rb9.getLayoutParams();
params9.setMargins((width / 4) * 3, -height, 0, 0);
rb9.setLayoutParams(params9);
LinearLayout.LayoutParams params11 = (LinearLayout.LayoutParams) rb11.getLayoutParams();
params11.setMargins(width / 4, -height, 0, 0);
rb11.setLayoutParams(params11);
LinearLayout.LayoutParams params12 = (LinearLayout.LayoutParams) rb12.getLayoutParams();
params12.setMargins((width / 4) * 2, -height, 0, 0);
rb12.setLayoutParams(params12);
LinearLayout.LayoutParams params13 = (LinearLayout.LayoutParams) rb13.getLayoutParams();
params13.setMargins((width / 4) * 3, -height, 0, 0);
rb13.setLayoutParams(params13);
}
/**
* 根据手机的分辨率从 dp 的单位 转成为 px(像素)
*/
public static int dpToPx(final Context context, final float dp) {
return (int) (dp * context.getResources().getDisplayMetrics().density);
}
}