嗨，我做了一个Android应用程序，其中iam将视频上传到PHP服务器。
我使用HTTPURLConnection进行上传。 Iam在通知区域显示进度条并更新它。我搜索差不多一个星期才做到这一点。但是无法得到提示。如果有人知道，请帮助我：
我的代码：
HttpURLConnection conn = null;
DataOutputStream dos = null;
DataInputStream inStream = null;
String lineEnd = "\r\n";
String twoHyphens = "--";
String boundary = "*****";
int bytesRead;
byte[] buffer;
String urlString = "http://xxxxx/My_path.php";
try {
long total = 0;
int count = 0;
// ------------------ CLIENT REQUEST
UUID uniqueKey = UUID.randomUUID();
fname = uniqueKey.toString();
Log.e("UNIQUE NAME", fname);
FileInputStream fileInputStream = new FileInputStream(
new File(selectedPath));
URL url = new URL(urlString);
conn = (HttpURLConnection) url.openConnection();
int length=selectedPath.length();
conn.setDoInput(true);
conn.setDoOutput(true);
conn.setUseCaches(false);
conn.setRequestMethod("POST");
conn.setRequestProperty("Connection", "Keep-Alive");
conn.setRequestProperty("Content-Type",
"multipart/form-data;boundary=" + boundary);
dos = new DataOutputStream(conn.getOutputStream());
dos.writeBytes(twoHyphens + boundary + lineEnd);
dos.writeBytes("Content-Disposition: form-data; name=\"uploadedfile\";filename=\""
+ fname + "" + lineEnd);
dos.writeBytes(lineEnd);
buffer = new byte[8192];
bytesRead = 0;
while ((bytesRead = fileInputStream.read(buffer)) > 0) {
dos.write(buffer, 0, bytesRead);
}
dos.writeBytes(lineEnd);
dos.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd);
Log.e("Debug", "File is written");
fileInputStream.close();
dos.flush();
dos.close();
} catch (MalformedURLException ex) {
Log.e("Debug", "error: " + ex.getMessage(), ex);
} catch (IOException ioe) {
Log.e("Debug", "error: " + ioe.getMessage(), ioe);
}
// ------------------ read the SERVER RESPONSE
try {
inStream = new DataInputStream(conn.getInputStream());
String str;
while ((str = inStream.readLine()) != null) {
Log.e("Debug", "Server Response " + str);
}
inStream.close();
} catch (IOException ioex) {
Log.e("Debug", "error: " + ioex.getMessage(), ioex);
}
答案 0 :(得分：7)
经过长时间的搜索，我完成了在通知区域显示进度条的任务。我们需要的是asynctask。可能是我在这里显示的代码不能很好地工作，它在iam测试时工作正常。请检查如果它运作良好，可以为这个答案提供支持。
我的代码：
public class loadVideo extends AsyncTask<Void, Integer, Void> {
int progress = 0;
Notification notification;
NotificationManager notificationManager;
int id = 10;
protected void onPreExecute() {
}
@Override
protected Void doInBackground(Void... params) {
HttpURLConnection conn = null;
DataOutputStream dos = null;
DataInputStream inStream = null;
String lineEnd = "\r\n";
String twoHyphens = "--";
String boundary = "*****";
int bytesRead;
int sentData = 0;
byte[] buffer;
String urlString = "http://xxxxx/xxx/xxxxxx.php";
try {
UUID uniqueKey = UUID.randomUUID();
fname = uniqueKey.toString();
Log.e("UNIQUE NAME", fname);
FileInputStream fileInputStream = new FileInputStream(new File(
selectedPath));
int length = fileInputStream.available();
URL url = new URL(urlString);
conn = (HttpURLConnection) url.openConnection();
conn.setDoInput(true);
conn.setDoOutput(true);
conn.setUseCaches(false);
conn.setRequestMethod("POST");
conn.setRequestProperty("Connection", "Keep-Alive");
conn.setRequestProperty("Content-Type",
"multipart/form-data;boundary=" + boundary);
dos = new DataOutputStream(conn.getOutputStream());
dos.writeBytes(twoHyphens + boundary + lineEnd);
dos.writeBytes("Content-Disposition: form-data; name=\"uploadedfile\";filename=\""
+ fname + "" + lineEnd);
dos.writeBytes(lineEnd);
buffer = new byte[8192];
bytesRead = 0;
while ((bytesRead = fileInputStream.read(buffer)) > 0) {
dos.write(buffer, 0, bytesRead);
sentData += bytesRead;
int progress = (int) ((sentData / (float) length) * 100);
publishProgress(progress);
}
dos.writeBytes(lineEnd);
dos.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd);
Log.e("Debug", "File is written");
fileInputStream.close();
dos.flush();
dos.close();
} catch (MalformedURLException ex) {
Log.e("Debug", "error: " + ex.getMessage(), ex);
} catch (IOException ioe) {
Log.e("Debug", "error: " + ioe.getMessage(), ioe);
}
// ------------------ read the SERVER RESPONSE
try {
inStream = new DataInputStream(conn.getInputStream());
String str;
while ((str = inStream.readLine()) != null) {
Log.e("Debug", "Server Response " + str);
}
inStream.close();
} catch (IOException ioex) {
Log.e("Debug", "error: " + ioex.getMessage(), ioex);
}
return null;
}
@Override
protected void onProgressUpdate(Integer... progress) {
Intent intent = new Intent();
final PendingIntent pendingIntent = PendingIntent.getActivity(
getApplicationContext(), 0, intent, 0);
notification = new Notification(R.drawable.video_upload,
"Uploading file", System.currentTimeMillis());
notification.flags = notification.flags
| Notification.FLAG_ONGOING_EVENT;
notification.contentView = new RemoteViews(getApplicationContext()
.getPackageName(), R.layout.upload_progress_bar);
notification.contentIntent = pendingIntent;
notification.contentView.setImageViewResource(R.id.status_icon,
R.drawable.video_upload);
notification.contentView.setTextViewText(R.id.status_text,
"Uploading...");
notification.contentView.setProgressBar(R.id.progressBar1, 100,
progress[0], false);
getApplicationContext();
notificationManager = (NotificationManager) getApplicationContext()
.getSystemService(Context.NOTIFICATION_SERVICE);
notificationManager.notify(id, notification);
}
protected void onPostExecute(Void result) {
Notification notification = new Notification();
Intent intent1 = new Intent(MultiThreadActivity.this,
MultiThreadActivity.class);
final PendingIntent pendingIntent = PendingIntent.getActivity(
getApplicationContext(), 0, intent1, 0);
int icon = R.drawable.check_16; // icon from resources
CharSequence tickerText = "Video Uploaded Successfully"; // ticker-text
CharSequence contentTitle = getResources().getString(
R.string.app_name); // expanded message
// title
CharSequence contentText = "Video Uploaded Successfully"; // expanded
// message
long when = System.currentTimeMillis(); // notification time
Context context = getApplicationContext(); // application
// Context
notification = new Notification(icon, tickerText, when);
notification.flags |= Notification.FLAG_AUTO_CANCEL;
notification.setLatestEventInfo(context, contentTitle, contentText,
pendingIntent);
String notificationService = Context.NOTIFICATION_SERVICE;
notificationManager = (NotificationManager) context
.getSystemService(notificationService);
notificationManager.notify(id, notification);
}
}
谢谢和问候 孙大信。
答案 1 :(得分：3)
使用**setProgress**的更简单方法：
public class loadVideo extends AsyncTask<Void, Integer, Void> {
int progress = 0;
NotificationCompat.Builder notificationBuilder;
NotificationManager notificationManager;
int id = 10;
protected void onPreExecute() {
//setup notification
notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
notificationBuilder = new NotificationCompat.Builder(getApplicationContext())
.setPriority(Notification.PRIORITY_MAX)
.setProgress(100,0,false)
.setContentTitle("Uploading Video")
.setSmallIcon(R.mipmap.ic_launcher)
.setContentIntent(pendingIntent)
.setAutoCancel(true);
notificationManager.notify(id,notificationBuilder.build());
}
@Override
protected Void doInBackground(Void... params) {
//do whatever here
return null;
}
@Override
protected void onProgressUpdate(Integer... progress) {
...
notificationBuilder.setContentText(""+intProgress+"%");
notificationBuilder.setProgress(100, intProgress,false);
notificationManager.notify(id, notificationBuilder.build());
}
protected void onPostExecute(Void result) {
...
notificationBuilder.setContentText("Upload Complete");
notificationManager.notify(1, notificationBuilder.build());
//continue conquering the world here...
}
}
答案 2 :(得分：0)
在RemoveView中，您可以更新进度条。因此结合一些示例代码，我得到这样的结果：
public class MyActivity extends Activity {
private static final int PROGRESS = 0x1;
private static final int MAX_PROGRESS = 100;
private int mProgressStatus = 0;
private Handler mHandler = new Handler();
protected void onCreate(Bundle icicle) {
super.onCreate(icicle);
//define Notification
//...
RemoteViews contentView = new RemoteViews(getPackageName(), R.layout.custom_notification_layout);
contentView.setProgressBar(R.id.progress_bar, MAX_PROGRESS, mProgressStatus, false);
notification.contentView = contentView;
// Start file upload in a background thread
new Thread(new Runnable() {
public void run() {
while (mProgressStatus < MAX_PROGRESS) {
mProgressStatus = doWork();
// Update the progress bar
mHandler.post(new Runnable() {
public void run() {
contentView.setProgressBar(R.id.progress_bar, MAX_PROGRESS, mProgressStatus, false);
}
});
}
}
}).start();
}
}
这个blog post有一个很好的实现相同的例子。希望这会有所帮助。