android之对话、单复框的使用

对话框

---

通过builder来构建一个单选框

package xidian.dy.com.chujia;

import android.content.DialogInterface;
import android.os.Bundle;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Button btn = (Button) findViewById(R.id.btn);
        if(btn != null)
            btn.setOnClickListener(new MyLister());
    }

    class MyLister implements View.OnClickListener{
        @Override
        public void onClick(View v) {
            //通过内部类Build来构建一个对话框
            AlertDialog.Builder builer =  new AlertDialog.Builder(MainActivity.this);
            builer.setIcon(android.R.drawable.alert_dark_frame);
            //设置对话框的标题
            builer.setTitle("请选择性别");
            //设置单选框内容
            String[] items = new String[]{"男", "女"};

            builer.setSingleChoiceItems(items, -1, new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    if(which == 0)
                        Toast.makeText(MainActivity.this, "男被选中", Toast.LENGTH_SHORT).show();
                    else
                        Toast.makeText(MainActivity.this, "女被选中", Toast.LENGTH_SHORT).show();
                    dialog.dismiss();
                }
            });
            builer.show();
        }

    }
}

复选框

---

package xidian.dy.com.chujia;

import android.content.DialogInterface;
import android.os.Bundle;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Button btn = (Button) findViewById(R.id.btn);
        if(btn != null)
            btn.setOnClickListener(new MyLister());
    }

    class MyLister implements View.OnClickListener{
        @Override
        public void onClick(View v) {
            //通过内部类Build来构建一个对话框
            AlertDialog.Builder builer =  new AlertDialog.Builder(MainActivity.this);
            builer.setIcon(android.R.drawable.alert_dark_frame);
            //设置对话框的标题
            builer.setTitle("请选择性别");
            //设置单选框内容
            String[] items = new String[]{"数学", "英语", "物理", "化学"};

            final boolean[] checkItems = new boolean[]{false, false, false, false};
            builer.setMultiChoiceItems(items, checkItems, new DialogInterface.OnMultiChoiceClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which, boolean isChecked) {
                    checkItems[which] = isChecked;
                }
            });

            builer.setPositiveButton("确定", new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    dialog.dismiss();
                }
            });

            builer.show();
        }

    }
}