关于安卓开发实现进度条对话框

进度条对话框(ProgressDialog)分为圆形和横向两种类型。

方法：

onCreatDialog(int id);创建一个对话框，只有在第一次创建该ID标识的Dialog时执行

onCreatDialog(int id,Bundle args);同上，带参数

onPrepareDialog(int id,Dialog dialog);在onCreateDialog之后，每次在对话框被显示之前都执行

onPrepareDialog(int id,Dialog dialog,Bundle args);同上，带参数

showDialog(int id);显示对话框

showDialog(int id,Bundle args);显示对话框,带参数

dismissDialog(int id);隐藏对话框，不从Activity中移除，保留状态

在layout 中添加两个按钮。第一个id 设为click_1 ,显示圆形进度条  第二个id设为click_2 ，显示横向进度条

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

    <Button
        android:id="@+id/click_1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="圆形进度条" />

    <Button
        android:id="@+id/click_2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="横向进度条" />

</LinearLayout>

在.java文件中

package lianxi;

import com.example.jichu_lianxi.R;

import android.accounts.OnAccountsUpdateListener;
import android.app.Activity;
import android.app.Dialog;
import android.app.ProgressDialog;
import android.content.DialogInterface;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.Toast;

public class KeyOnclick extends Activity{
    private Button click_1;
    private Button click_2;
    private ProgressDialog mpdialog;
    private int flag = 0;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
        setContentView(R.layout.key);
        
        click_1 = (Button) findViewById(R.id.click_1);
        click_2 = (Button) findViewById(R.id.click_2);
        
        click_1.setOnClickListener(new OnClickListener() {
            
            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                mpdialog = new ProgressDialog(KeyOnclick.this);
                //设置圆形进度条风格
                mpdialog.setProgressStyle(ProgressDialog.STYLE_SPINNER);
                mpdialog.setTitle("提示");                       //设置标题
                //mpdialog.setIcon(R.drawable.icon);             //设置图标
                mpdialog.setMessage("这是圆形进度条");               //设置内容
                mpdialog.setIndeterminate(false);              //设置进度条是否可以不明确
                mpdialog.setCancelable(true);                  //设置进度条是否可以取消
                mpdialog.setButton("确定", new DialogInterface.OnClickListener() {
                    
                    @Override
                    public void onClick(DialogInterface dialog, int whic) {
                        // TODO Auto-generated method stub
                        dialog.cancel();                    //取消
                    }
                });
                mpdialog.show();                            //显示进度条
            }
        });
        
        click_2.setOnClickListener(new OnClickListener() {
            
            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                flag = 0;
                mpdialog = new ProgressDialog(KeyOnclick.this);
                //设置横向进度条风格
                mpdialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
                mpdialog.setTitle("提示");                       //设置标题
                //mpdialog.setIcon(R.drawable.icon);             //设置图标
                mpdialog.setMessage("这是横向进度条");               //设置内容
                mpdialog.setMax(100);                          
                mpdialog.setProgress(0);
                mpdialog.setSecondaryProgress(50);
                mpdialog.setIndeterminate(false);              //设置进度条是否可以不明确
                mpdialog.setCancelable(true);                  //设置进度条是否可以取消
                mpdialog.setButton("确定", new DialogInterface.OnClickListener() {
                    
                    @Override
                    public void onClick(DialogInterface dialog, int whic) {
                        // TODO Auto-generated method stub
                        dialog.cancel();                    //取消
                    }
                });
                new Thread(){
                    public void run() {
                        try{
                            while (flag<=100) 
                            {
                                mpdialog.setProgress(flag++);
                                Thread.sleep(100);
                            }
                            mpdialog.cancel();
                            }
                        catch(Exception e)
                        {
                            mpdialog.cancel();
                            
                        }
                    }
                }.start();
                mpdialog.show();                            //显示进度条
            }
        });
    }
}