可以這樣來實現上傳:
activity中執行:
private class UploadPhotoTask extends AsyncTask{
@Override
protected void onPreExecute() {
super.onPreExecute();
}
protected Boolean doInBackground(String... params) {
return HttpUploadedFile.getInstance().doUploadPhoto(getApplicationContext(), mUploadFilePathName, mHandler);
}
protected void onPostExecute(Boolean result){
mIsUploading = false;
showProgressBar(false);
if(result){
Toast.makeText(UploadPhotoActivity.this, R.string.upload_photo_fail, Toast.LENGTH_SHORT).show();
}else{
Toast.makeText(UploadPhotoActivity.this, R.string.upload_photo_fail, Toast.LENGTH_SHORT).show();
}
}
}
寫一個handle來更新進度條:
/** Handler to get notify from upload photo engine*/
private Handler mHandler = new Handler() {
@Override
public void handleMessage(Message msg) {
switch (msg.what) {
case HttpUploadedFile.POST_PROGRESS_NOTIFY:
int completePercent = msg.arg1;
HandleUploadProgress(completePercent);
break;
default:
break;
}
}
};
/**
* handle the uploading progress notification
*/
private void HandleUploadProgress(int completePercent){
View containerView = findViewById(R.id.photo_upload_progress_bar_container);
int maxLen = containerView.getWidth(); //這個是進度條所在的parent layout的寬度
int barLen = (completePercent * maxLen) / 100;
View barView = findViewById(R.id.photo_upload_progress_bar);
LayoutParams params = new LayoutParams();
params.height = LayoutParams.FILL_PARENT;
params.width = barLen;
barView.setLayoutParams(params); //更新進度條的寬度
}
/**
* show or hide progress bar
*/
private void showProgressBar(boolean show){
View view = findViewById(R.id.photo_upload_progress_layout);
if(show){
view.setVisibility(View.VISIBLE);
View bar = view.findViewById(R.id.photo_upload_progress_bar);
LayoutParams params = new LayoutParams();
params.height = LayoutParams.FILL_PARENT;
params.width = 3;
bar.setLayoutParams(params);
}else{
view.setVisibility(View.GONE);
}
}
以下是上傳的模塊:
public class HttpUploadedFile {
/** single instance of this class */
private static HttpUploadedFile instance = null;
/**
* Constructor
*/
private HttpUploadedFile(){
}
/**
* Factory method
*/
public static synchronized HttpUploadedFile getInstance(){
if(instance == null){
instance = new HttpUploadedFile();
}
return instance;
}
String url = "http://2.novelread.sinaapp.com/framework-sae/index.php?c=main&a=getPostBody";
private int lastErrCode = 0;// 最近一次出錯的錯誤代碼
byte[] tmpBuf = new byte[BUF_LEN];
byte[] tmpBuf2 = new byte[BUF_LEN * 2];
public static final int POST_PROGRESS_NOTIFY = 101;
HttpURLConnection connection = null;
public static final int HTTP_ARGUMENT_ERR = -1001;// HTTP 參數錯誤
public static final int HTTP_RESPONSE_EMPTY = -1002;// Http Response is
// Empty
public static final int HTTP_URL_ERR = -1003;// Url格式錯誤
public static final int HTTP_GZIP_ERR = -1004;// 響應數據解壓縮失敗
public static final int HTTP_CANCELED = -1005;// 當前下載已取消
public static final int HTTP_EXCEPTION = -1006;// 發生異常
private boolean bIsStop = false;
protected Object objAbort = new Object();
private Handler mHandler = null;
public static final int TIMEOUT = 30000;// 超時時間30秒
private static final int BUF_LEN = 512;// 數據緩沖長度
public boolean doUploadPhoto(Context context, String filePathName,
Handler handler) {
boolean ret = false;
File file = new File(filePathName);
if (!file.exists()) {
return false;
}
FileInputStream fs = null;
if (file != null) {
try {
fs = new FileInputStream(file);
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
if (file == null || fs == null) {
return false;
}
mHandler = handler;
ret = postWithoutResponse(context, url, fs, (int) file.length());
if (fs != null) {
try {
fs.close();
fs = null;
} catch (Exception e) {
}
}
return ret;
}
public Boolean postWithoutResponse(Context context, final String strUrl,
InputStream dataStream, int iStreamLen) { //iStreamLen是FIle的大寫，以字節作為單位
if (TextUtils.isEmpty(strUrl) || dataStream == null || iStreamLen <= 0) {
lastErrCode = HTTP_ARGUMENT_ERR;
return false;
}
URL postUrl = null;
try {
postUrl = new URL(strUrl);
} catch (MalformedURLException ex) {
Log.e("HttpUtil", "get MalformedURL", ex);
lastErrCode = HTTP_URL_ERR;
return false;
}
bIsStop = false;
InputStream input = null;
DataOutputStream ds = null;
ByteArrayOutputStream byteOutStream = null;
HttpURLConnection conn = null;
byte[] outData = null;
try {
if (bIsStop) {
lastErrCode = HTTP_CANCELED;
return false;
}
conn = getConnection(context, postUrl);
connection = conn;
conn.setRequestMethod("POST");
conn.setDoInput(true);
conn.setDoOutput(true);
conn.setConnectTimeout(TIMEOUT * 3);
conn.setReadTimeout(TIMEOUT * 3);
conn.setRequestProperty("Connection", "Keep-Alive");
conn.setRequestProperty("Content-Type", "application/octet-stream");
conn.setRequestProperty("Content-Length",
String.valueOf(iStreamLen));
if (bIsStop) {
lastErrCode = HTTP_CANCELED;
return false;
}
// get the wifi status
WifiManager wifiManager = (WifiManager) context
.getSystemService(Context.WIFI_SERVICE);
boolean bWifiEnable = (wifiManager.getWifiState() == WifiManager.WIFI_STATE_ENABLED);
// byte[] data = new byte[BUF_LEN];
ds = new DataOutputStream(conn.getOutputStream());
int len = 0;
int postLen = 0;
int nMaxProgress = bWifiEnable ? 80 : 40;
while (!bIsStop && ((len = dataStream.read(tmpBuf2)) != -1)) {//如果bIsStop為true,則下面寫文件到服務器的過程會終止
ds.write(tmpBuf2, 0, len);
ds.flush();
// waiting for uploading the image file to optimize the progress
// bar when using GPRS
if (!bWifiEnable) {
Thread.sleep(30);
}
// notify post progress
postLen += len;
if (mHandler != null) {
Message msg = new Message();
msg.what = POST_PROGRESS_NOTIFY;
msg.arg1 = (postLen * nMaxProgress) / iStreamLen;//postLen是已經上傳的文件大小，nMaxProgress 的作用上增快進度條
mHandler.sendMessage(msg);}}if (bIsStop) {lastErrCode = HTTP_CANCELED;return false;}ds.flush();// waiting for uploading the image file to optimize the progress bar// when using GPRSif (!bWifiEnable) {postLen = 0;while (postLen < iStreamLen)
{Thread.sleep(30);// notify post progresspostLen += tmpBuf2.length;if (mHandler != null) {Message msg = new Message();msg.what = POST_PROGRESS_NOTIFY;msg.arg1 = (postLen * 35) / iStreamLen + 50;mHandler.sendMessage(msg);}}}// waiting for the server's responseInputStream
is = conn.getInputStream();int ch;StringBuffer res = new StringBuffer();while ((ch = is.read()) != -1) {res.append((char) ch);}if (mHandler != null) {Message msg = new Message();msg.what = POST_PROGRESS_NOTIFY;msg.arg1 = 90;mHandler.sendMessage(msg);}return
true;} catch (Exception ex) {Log.e("HttpUtil", "post", ex);if (bIsStop) {lastErrCode = HTTP_CANCELED;} else {lastErrCode = HTTP_EXCEPTION;}return false;} finally {try {outData = null;if (input != null) {input.close();input = null;}// if (ds != null){// ds.close();//
ds = null;// }try {ds.close();ds = null;} catch (Exception e) {// TODO: handle exception}if (conn != null) {conn.disconnect();conn = null;}if (byteOutStream != null) {byteOutStream.close();byteOutStream = null;}if (bIsStop) {
//如果終止完成後會通知cancel那個方法synchronized (objAbort) {objAbort.notify();}}if (mHandler != null) {Message msg = new Message();msg.what = POST_PROGRESS_NOTIFY;msg.arg1 = 100;mHandler.sendMessage(msg);}} catch (Exception ex) {Log.e("HttpUtil", "post
finally", ex);}}}public synchronized void cancel() {try {bIsStop = true;//用戶點擊了cancel button,這個設置bIsStop為trueif (connection != null) {connection.disconnect();connection = null;}synchronized (objAbort) { //只有postWithoutResponse執行到finally才通知可以執行完這個函數
objAbort.wait(50);}}
catch (Exception ex) {Log.v("HttpUtil", "canel", ex);}}private HttpURLConnection getConnection(Context context, URL url)throws Exception {String[] apnInfo = null;WifiManager wifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);int wifiState
= wifiManager.getWifiState();HttpURLConnection conn = null;conn = (HttpURLConnection) url.openConnection();//獲取http的連接return conn;}}
代碼在http://download.csdn.net/detail/baidu_nod/7735511
