Activity01.java

package com.yarin.android.Examples_04_21;

import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.util.Log;
import android.view.View;
import android.view.Window;
import android.widget.Button;
import android.widget.ProgressBar;

public class Activity01 extends Activity {
    private static String TAG = Activity01.class.getName();
    //����ProgressBar����
    private ProgressBar m_ProgressBar;
    private ProgressBar m_ProgressBar2;
    private Button mButton01;
    protected static final int GUI_STOP_NOTIFIER = 0x108;
    protected static final int GUI_THREADING_NOTIFIER = 0x109;
    public int intCounter = 0;

    /**
     * Called when the activity is first created.
     */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        //���ô���ģʽ������Ϊ��Ҫ��ʾ�������ڱ�����
        requestWindowFeature(Window.FEATURE_PROGRESS);
        setProgressBarVisibility(true);
        setContentView(R.layout.main);

        //ȡ��ProgressBar
        m_ProgressBar = (ProgressBar) findViewById(R.id.ProgressBar01);
        m_ProgressBar2 = (ProgressBar) findViewById(R.id.ProgressBar02);
        mButton01 = (Button) findViewById(R.id.Button01);

        m_ProgressBar.setIndeterminate(false);
        m_ProgressBar2.setIndeterminate(false);

        //����ť����ʱ��ʼִ��,
        mButton01.setOnClickListener(new Button.OnClickListener() {
            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub

                //����ProgressBarΪ�ɼ�״̬
                m_ProgressBar.setVisibility(View.VISIBLE);
                m_ProgressBar2.setVisibility(View.VISIBLE);
                //����ProgressBar�����ֵ
                m_ProgressBar.setMax(100);
                //����ProgressBar��ǰֵ
                m_ProgressBar.setProgress(0);
                m_ProgressBar2.setProgress(0);

                //ͨ���߳����ı�ProgressBar��ֵ
                new Thread(new Runnable() {
                    public void run() {
                        for (int i = 0; i < 10; i++) {
                            try {
                                intCounter = (i + 1) * 20;
                                Thread.sleep(1000);

                                if (i == 4) {
                                    Message m = new Message();

                                    m.what = Activity01.GUI_STOP_NOTIFIER;
                                    Activity01.this.myMessageHandler.sendMessage(m);
                                    break;
                                } else {
                                    Message m = new Message();
                                    m.what = Activity01.GUI_THREADING_NOTIFIER;
                                    Activity01.this.myMessageHandler.sendMessage(m);
                                }
                            } catch (Exception e) {
                                e.printStackTrace();
                            }
                        }
                    }
                }).start();
            }
        });
    }

    Handler myMessageHandler = new Handler() {
        // @Override
        public void handleMessage(Message msg) {
            switch (msg.what) {
                //ProgressBar�Ѿ��ǶԴ�ֵ
                case Activity01.GUI_STOP_NOTIFIER:
                    m_ProgressBar.setVisibility(View.GONE);
                    m_ProgressBar2.setVisibility(View.GONE);
//				  Thread.currentThread().interrupt();
                    break;
                case Activity01.GUI_THREADING_NOTIFIER:
//				  if (!Thread.currentThread().isInterrupted())
//				  {
                    Log.v(TAG, "intCounter: " + intCounter);
                    // �ı�ProgressBar�ĵ�ǰֵ
                    m_ProgressBar.setProgress(intCounter);
                    m_ProgressBar2.setProgress(intCounter);

                    // ���ñ�������ǰ���һ������������ֵ
                    setProgress(intCounter * 100);
                    // ���ñ������к����һ������������ֵ
                    setSecondaryProgress(intCounter); // TODO: ??

//				  }
                    break;
            }
            super.handleMessage(msg);
        }
    };
}