復制代碼 代碼如下:

//進度對話框按鈕監聽
class ProssButtonListener implements OnClickListener {
@Override
public void onClick(View v) {
myDialog = ProgressDialog.show(ProgressbarDemo.this, "進度條標題",
"進度條內容", true);

new Thread() {
public void run() {
try {
/* 在這里寫上要背景運行的程序片段 */
/* 為了明顯看見效果，以暫停3秒作為示范 */
sleep(3000);
} catch (Exception e) {
e.printStackTrace();
} finally {
// 卸載所創建的myDialog對象。
myDialog.dismiss();
}
}
}.start(); /* 開始運行運行線程 */
}
}

復制代碼 代碼如下:

//進度條handle按鈕監聽
class ProssBarHandleButtonListener implements OnClickListener {
@Override
public void onClick(View v) {
progressBarHandle.setVisibility(View.VISIBLE);
myProssBarhandleText.setVisibility(View.VISIBLE);
progressBarHandle.setMax(1000);
new Thread() {
public void run() {
for(int i=0;i<=1000;){
try {
/* 在這里寫上運行的進度條 */
Message msg = new Message();
msg.what = 1;
msg.getData().putInt("size", i);
handler.sendMessage(msg);//handle發送消息
/* 為了明顯看見效果，以暫停1秒作為示范 */
sleep(100);
i+=10;
} catch (Exception e) {
handler.obtainMessage(-1).sendToTarget();
e.printStackTrace();
}
}
}
}.start(); /* 開始運行運行線程 */
}
}

//handle接收消息
private Handler handler = new Handler(){

@Override
public void handleMessage(Message msg) {
switch (msg.what) {
case 1:
progressBarHandle.setProgress(msg.getData().getInt("size"));
float num = (float)progressBarHandle.getProgress()/(float)progressBarHandle.getMax();
int result = (int)(num*100);
System.out.println("progressBarHandle.getProgress()======="+progressBarHandle.getProgress());
myProssBarhandleText.setText(result+ "%");
if(progressBarHandle.getProgress()==progressBarHandle.getMax()){
Toast.makeText(ProgressbarDemo.this, "下載成功", 1).show();
progressBarHandle.setVisibility(View.GONE);
myProssBarhandleText.setVisibility(View.GONE);
}
break;

case -1:
Toast.makeText(ProgressbarDemo.this,"下載失敗", 1).show();
break;
}
}
};

復制代碼 代碼如下:

//進度條synctask按鈕監聽
class ProssBarSyncButtonListener implements OnClickListener {
@Override
public void onClick(View v) {
new AsyncLoader().execute((Void)null);
}
}


//AsyncTask 任務執行
class AsyncLoader extends AsyncTask<Void, Integer, Integer> {
@Override
//在doInBackground方法執行前執行
protected void onPreExecute(){
progressBarHandle.setVisibility(View.VISIBLE);
myProssBarhandleText.setVisibility(View.VISIBLE);
progressBarHandle.setMax(100000);
}

//做具體的耗時操作
protected Integer doInBackground(Void... params) {
//這里以1萬的進度條刻度來顯示
int totalSize = 100000;
for (int i = 0; i < 100000; ) {
publishProgress(i); //通過推送消息傳遞數據給onProgressUpdate方法執行
i+=10;
}
return totalSize;
}
//在doInBackground方法執行過程中執行
protected void onProgressUpdate(Integer... progress) {
progressBarHandle.setProgress(progress[0]);
float num = (float)progressBarHandle.getProgress()/(float)progressBarHandle.getMax();
int result = (int)(num*100);
myProssBarhandleText.setText(result+ "%");
}

//在doInBackground方法結束后執行
protected void onPostExecute(Integer result) {
Toast.makeText(ProgressbarDemo.this, "下載成功，下載了"+result, 1).show();
myProssBarhandleText.setVisibility(View.GONE);
progressBarHandle.setVisibility(View.GONE);
}
}