Android开发之使用活动显示对话框

利用活动显示对话框，需要重写Activity中的onCreateDialog（）方法，以此来显示一个对话框窗口。

效果如下：

实现代码如下：

package com.example.dialog;

import java.util.zip.CheckedInputStream;

import android.app.Activity;
import android.app.AlertDialog;
import android.app.AlertDialog.Builder;
import android.app.Dialog;
import android.app.ProgressDialog;
import android.content.DialogInterface;
import android.os.Bundle;
import android.view.View;
import android.widget.Toast;

public class DialogActivity extends Activity {

    CharSequence[] items = {"美女","世界美女","绝食美女"};
    boolean[] itemsChecked = new boolean[items.length];
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
    }

    public void onClick(View v){
        showDialog(0);
    }
    @Override
    @Deprecated
    protected Dialog onCreateDialog(int id) {
        // TODO Auto-generated method stub
        switch (id) {
        case 0:
            Builder builder =  new AlertDialog.Builder(this);
            builder.setIcon(R.drawable.ic_launcher);
            builder.setTitle("This is a dialog with some text");
            builder.setPositiveButton("OK", new DialogInterface.OnClickListener() {

                @Override
                public void onClick(DialogInterface dialog, int which) {
                    // TODO Auto-generated method stub
                    Toast.makeText(getBaseContext(), "OK clicked!", Toast.LENGTH_SHORT).show();
                }
             }
            );
            builder.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {

                @Override
                public void onClick(DialogInterface dialog, int which) {
                    // TODO Auto-generated method stub
                    Toast.makeText(getBaseContext(), "Cancel clicked!", Toast.LENGTH_SHORT).show();
                }
             }
            );
            builder.setMultiChoiceItems(items, itemsChecked, new DialogInterface.OnMultiChoiceClickListener() {

                @Override
                public void onClick(DialogInterface Dialog, int which, boolean isChecked) {
                    // TODO Auto-generated method stub
                    Toast.makeText(getBaseContext(),
                    items[which] + (isChecked ? " Checked!":" Unchecked!" ),
                    Toast.LENGTH_SHORT).show();
                }
            }
            );
            return builder.create();

        }
        return null;

    }
    public void onClick2(View v){
        final ProgressDialog progressDialog =ProgressDialog.show(this, "progressbar", "please waiting...");
        new Thread(new Runnable() {

            @Override
            public void run() {
                // TODO Auto-generated method stub
                try {
                    Thread.sleep(3000);
                    progressDialog.dismiss();
                } catch (InterruptedException e) {
                    // TODO: handle exception
                    e.printStackTrace();
                }
            }
        }).start();
    }
}