畫面載入顯示ProgressBar

1.UI的xml檔

<AbsoluteLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:paddingBottom="@dimen/activity_vertical_margin"

    android:paddingLeft="@dimen/activity_horizontal_margin"

    android:paddingRight="@dimen/activity_horizontal_margin"

    android:paddingTop="@dimen/activity_vertical_margin"

    tools:context=".MainActivity" >

    <TextView

        android:id="@+id/textView1"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_x="117dp"

        android:layout_y="62dp"

        android:text="" 

        android:textSize="30sp"/>

</AbsoluteLayout>

2.主程式程式碼

import android.app.Activity;

import android.app.ProgressDialog;

import android.os.Bundle;

import android.os.Handler;

import android.os.Message;

import android.widget.TextView;

public class MainActivity extends Activity {

ProgressDialog progresslog;

MyProgressThread myp;

TextView tv;

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

tv = (TextView) this.findViewById(R.id.textView1);

setView();

}

public void setView() {

progresslog = new ProgressDialog(MainActivity.this, 1);

progresslog.setMessage("Loading...");

progresslog.setProgressStyle(ProgressDialog.STYLE_SPINNER);

progresslog.show();

myp = new MyProgressThread(handler);

myp.start();

}

class MyProgressThread extends Thread {

private int total = 0;

private boolean limited = true;

public final static int count = 50;

public final static boolean sate = false;

Handler han;

MyProgressThread() {

}

MyProgressThread(Handler han) {

this.han = han;

}

public void run() {

while (limited) {

total++;

try {

Thread.sleep(100);

} catch (InterruptedException e) {

progresslog.dismiss();

}

Message msg = new Message();

msg.arg1 = total;

han.sendMessage(msg);

}

}

public void setSate(boolean sate) {

limited = sate;

}

}

final Handler handler = new Handler() {

public void handleMessage(Message msg) {

int count = msg.arg1;

if (count == MyProgressThread.count) {

progresslog.dismiss();

tv.setText("歡迎進入畫面");

new MyProgressThread().setSate(MyProgressThread.sate);

}

}

};

}