单选对话框初识

使用的是 AlertDialog.Builder 的setSingleChoiceItems方法
先声明集合和数组，数组存放数据放入几个中方便取值

    String []sexs=new String[]{"男","女"};    List<Integer> list=new ArrayList<>();

主要的流程
1.创建builder
2.设置属性
3.创建AlertDialog
4.显示对话框

<?xml version="1.0" encoding="utf-8"?><LinearLayout    xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:id="@+id/activity_signle"    android:orientation="vertical"    android:layout_width="match_parent"    android:layout_height="match_parent"    tools:context="com.axnet.duihuakuangtest.SignleActivity">    <Button        android:id="@+id/btnSelect"        android:text="单选"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        />    <TextView        android:id="@+id/tv"        android:text="Test"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        /></LinearLayout>

public class SignleActivity extends AppCompatActivity {    Button btnSelect;    TextView tv;    String []sexs=new String[]{"男","女"};    List<Integer> list=new ArrayList<>();    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_signle);        init();        btnSelect.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                tv.setText("");                //创建builder                AlertDialog.Builder builder=new AlertDialog.Builder(SignleActivity.this);                //设置属性                builder.setIcon(R.mipmap.ic_launcher);                builder.setTitle("单选");                builder.setSingleChoiceItems(sexs, 0, new DialogInterface.OnClickListener() {                    @Override                    public void onClick(DialogInterface dialog, int which) {//                        dialog.dismiss();                        if(dialog!=null){                            list.add(which);                            dialog.dismiss();                            for(Integer index : list){                                tv.append(sexs[index]+",");                            }                            list.clear();                        }                    }                });                //创建AlertDialog                AlertDialog dialog=builder.create();                //显示对话框                dialog.show();            }        });    }    private void init() {        btnSelect=(Button) findViewById(R.id.btnSelect);        tv=(TextView) findViewById(R.id.tv);    }}

效果图