Android如何实现对话框

package com.example.administrator.dialog;

import android.app.AlertDialog;
import android.content.DialogInterface;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;


public class MainActivity extends ActionBarActivity {
    private Button btn_okcancel;
    private Button btn_radio;
    private Button btn_checkbox;
    private Button btn_item;
    private Button btn_custom;



    private String[] radioStrs = new String[]{"男","女","保密"};
    private String[] interestStrs = new String[]{"运动","电玩","旅行","阅读","电影"};
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        btn_okcancel = (Button)findViewById(R.id.btn_okcancel);
        btn_radio = (Button)findViewById(R.id.btn_radio);
        btn_checkbox = (Button)findViewById(R.id.btn_checkbox);
        btn_item = (Button)findViewById(R.id.btn_item);
        btn_custom = (Button)findViewById(R.id.btn_custom);


        btn_okcancel.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                AlertDialog.Builder ok_cancel_dialog = new AlertDialog.Builder(MainActivity.this);
                ok_cancel_dialog.setIcon(R.mipmap.ic_launcher);
                ok_cancel_dialog.setTitle("确认下班吗?");
                ok_cancel_dialog.setMessage("你真的确认下班吗?");
                ok_cancel_dialog.setNegativeButton("左", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {

                    }
                });

                ok_cancel_dialog.setPositiveButton("右", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {

                    }
                });

                ok_cancel_dialog.setNeutralButton("中", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {

                    }
                });

                AlertDialog dialog = ok_cancel_dialog.create();
                dialog.show();
            }
        });


        btn_radio.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                AlertDialog.Builder radio_dialog = new AlertDialog.Builder(MainActivity.this);
                radio_dialog.setIcon(R.mipmap.ic_launcher);
                radio_dialog.setTitle("请选择性别?");
//                radio_dialog.setMessage("认真选择哦?"); 不可以设置这个属性
                radio_dialog.setSingleChoiceItems(radioStrs, 0, new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {

                    }
                });
                AlertDialog dialog = radio_dialog.create();
                dialog.show();
            }
        });

        btn_checkbox.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                AlertDialog.Builder checkbox_dialog = new AlertDialog.Builder(MainActivity.this);
                checkbox_dialog.setIcon(R.mipmap.ic_launcher);
                checkbox_dialog.setTitle("请选择兴趣爱好?");
//                checkbox_dialog.setMessage("可以选择多个哦?"); 不可以设置这个属性
                checkbox_dialog.setMultiChoiceItems(interestStrs, null, new DialogInterface.OnMultiChoiceClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which, boolean isChecked) {

                    }
                });
                AlertDialog dialog = checkbox_dialog.create();
                dialog.show();
            }
        });

        btn_checkbox.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                AlertDialog.Builder checkbox_dialog = new AlertDialog.Builder(MainActivity.this);
                checkbox_dialog.setIcon(R.mipmap.ic_launcher);
                checkbox_dialog.setTitle("请选择兴趣爱好?");
//                checkbox_dialog.setMessage("可以选择多个哦?"); 不可以设置这个属性
                checkbox_dialog.setMultiChoiceItems(interestStrs, null, new DialogInterface.OnMultiChoiceClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which, boolean isChecked) {

                    }
                });
                AlertDialog dialog = checkbox_dialog.create();
                dialog.show();
            }
        });

        btn_item.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                AlertDialog.Builder items_dialog = new AlertDialog.Builder(MainActivity.this);
                items_dialog.setIcon(R.mipmap.ic_launcher);
                items_dialog.setTitle("请选择兴趣爱好?");
//                checkbox_dialog.setMessage("可以选择多个哦?"); 不可以设置这个属性
                items_dialog.setItems(interestStrs, new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {

                    }
                });
                AlertDialog dialog = items_dialog.create();
                dialog.show();
            }
        });

        btn_custom.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                final View view = View.inflate(MainActivity.this, R.layout.edit_dialog, null);
                AlertDialog.Builder custom_dialog = new AlertDialog.Builder(MainActivity.this);
                custom_dialog.setIcon(R.mipmap.ic_launcher);
                custom_dialog.setTitle("请输入您的年龄?");
                custom_dialog.setNeutralButton("确定", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        EditText editText = (EditText)view.findViewById(R.id.text);
                        Toast.makeText(MainActivity.this, editText.getText() ,Toast.LENGTH_LONG).show();
                    }
                });
                custom_dialog.setView(view);
                AlertDialog dialog = custom_dialog.create();
                dialog.show();
            }
        });
    }
}