Android 带有progressbar的MultipartEntityBuilder
我使用以下代码使用MultipartEntityBuilder将照片上载到我的服务器。最后的某个地方写着Android 带有progressbar的MultipartEntityBuilder,android,multipartentity,Android,Multipartentity,我使用以下代码使用MultipartEntityBuilder将照片上载到我的服务器。最后的某个地方写着//FIXME把你的进度条放在这里。我不知道是否应该将整个函数放入Asynctask，或者在上传文件时应该如何显示进度 我查过了，但没什么用 public String postFile(String fileName) throws Exception { fileName = "/mnt/sdcard/DCIM/100MEDIA/IMAG0309.jpg";
//FIXME把你的进度条放在这里。我不知道是否应该将整个函数放入Asynctask，或者在上传文件时应该如何显示进度
我查过了，但没什么用
public String postFile(String fileName) throws Exception {
fileName = "/mnt/sdcard/DCIM/100MEDIA/IMAG0309.jpg";
HttpClient client = new DefaultHttpClient();
HttpPost post = new HttpPost("http://www.mywebsite.com/upload_file.php");
MultipartEntityBuilder builder = MultipartEntityBuilder.create();
builder.setMode(HttpMultipartMode.BROWSER_COMPATIBLE);
final File file = new File(fileName);
FileBody fb = new FileBody(file);
builder.addPart("file",fb);
String userid = session_userid;
builder.addTextBody("userID", userid);
final HttpEntity yourEntity = builder.build();
class ProgressiveEntity implements HttpEntity {
@Override
public void consumeContent() throws IOException {
yourEntity.consumeContent();
}
@Override
public InputStream getContent() throws IOException,
IllegalStateException {
return yourEntity.getContent();
}
@Override
public Header getContentEncoding() {
return yourEntity.getContentEncoding();
}
@Override
public long getContentLength() {
return yourEntity.getContentLength();
}
@Override
public Header getContentType() {
return yourEntity.getContentType();
}
@Override
public boolean isChunked() {
return yourEntity.isChunked();
}
@Override
public boolean isRepeatable() {
return yourEntity.isRepeatable();
}
@Override
public boolean isStreaming() {
return yourEntity.isStreaming();
} // CONSIDER put a _real_ delegator into here!
@Override
public void writeTo(OutputStream outstream) throws IOException {
class ProxyOutputStream extends FilterOutputStream {
public ProxyOutputStream(OutputStream proxy) {
super(proxy);
}
public void write(int idx) throws IOException {
out.write(idx);
}
public void write(byte[] bts) throws IOException {
out.write(bts);
}
public void write(byte[] bts, int st, int end) throws IOException {
out.write(bts, st, end);
}
public void flush() throws IOException {
out.flush();
}
public void close() throws IOException {
out.close();
}
}
class ProgressiveOutputStream extends ProxyOutputStream {
int totalSent;
public ProgressiveOutputStream(OutputStream proxy) {
super(proxy);
}
public void write(byte[] bts, int st, int end) throws IOException {
// FIXME Put your progress bar stuff here!
out.write(bts, st, end);
}
}
yourEntity.writeTo(new ProgressiveOutputStream(outstream));
}
};
ProgressiveEntity myEntity = new ProgressiveEntity();
post.setEntity(myEntity);
HttpResponse response = client.execute(post);
return getContent(response);
}
这就是我所做的，但我仍然需要你们来完成它：
@Override
protected String doInBackground(HttpResponse... arg0)
{
String fileName = "/mnt/sdcard/DCIM/100MEDIA/IMAG0309.jpg";
HttpClient client = new DefaultHttpClient();
HttpPost post = new HttpPost("http://www.mywebsite.com/upload_file.php");
MultipartEntityBuilder builder = MultipartEntityBuilder.create();
builder.setMode(HttpMultipartMode.BROWSER_COMPATIBLE);
final File file = new File(fileName);
FileBody fb = new FileBody(file);
builder.addPart("file",fb);
String userid = session_userid;
builder.addTextBody("userID", userid);
final HttpEntity yourEntity = builder.build();
class ProgressiveEntity implements HttpEntity {
@Override
public void consumeContent() throws IOException {
yourEntity.consumeContent();
}
@Override
public InputStream getContent() throws IOException,
IllegalStateException {
return yourEntity.getContent();
}
@Override
public Header getContentEncoding() {
return yourEntity.getContentEncoding();
}
@Override
public long getContentLength() {
return yourEntity.getContentLength();
}
@Override
public Header getContentType() {
return yourEntity.getContentType();
}
@Override
public boolean isChunked() {
return yourEntity.isChunked();
}
@Override
public boolean isRepeatable() {
return yourEntity.isRepeatable();
}
@Override
public boolean isStreaming() {
return yourEntity.isStreaming();
} // CONSIDER put a _real_ delegator into here!
@Override
public void writeTo(OutputStream outstream) throws IOException {
class ProxyOutputStream extends FilterOutputStream {
public ProxyOutputStream(OutputStream proxy) {
super(proxy);
}
public void write(int idx) throws IOException {
out.write(idx);
}
public void write(byte[] bts) throws IOException {
out.write(bts);
}
public void write(byte[] bts, int st, int end) throws IOException {
out.write(bts, st, end);
}
public void flush() throws IOException {
out.flush();
}
public void close() throws IOException {
out.close();
}
}
class ProgressiveOutputStream extends ProxyOutputStream {
public ProgressiveOutputStream(OutputStream proxy) {
super(proxy);
int totalSent = 0;
}
public void write(byte[] bts, int st, int end) throws IOException {
// FIXME Put your progress bar stuff here!
//what's totalSize?
publishProgress((int) ((end / (float) totalSize) * 100));
out.write(bts, st, end);
}
}
yourEntity.writeTo(new ProgressiveOutputStream(outstream));
}
};
ProgressiveEntity myEntity = new ProgressiveEntity();
post.setEntity(myEntity);
HttpResponse response = client.execute(post);
return getContent(response);
//Here it says I should put this into a try catch but then I get an error on
// the doInBackground line saying it needs to return a string
}
protected void onProgressUpdate(Integer... progress) {
pd.setProgress((int) (progress[0]));
}
@SuppressWarnings("deprecation")
@Override
protected void onPostExecute(String file_url) {
pd.dismiss();
connection.disconnect();
Toast.makeText(getApplicationContext(), "Ready.", Toast.LENGTH_LONG).show();
}
}
我试图实现类似的目标（我使用ProgressDialog
而不是ProgressBar
）。您必须使用AsyncTask
，这样主线程就不会等待上载完成（上载必须是异步的）
为HttpEntityWrapped
（信用证：）创建扩展名：
}
我已经创建了一个私有类，它在活动中扩展异步任务
。在doInBackground
中，您可以使用MultipartEntityBuilder
添加文件和所需的任何内容。如果上传成功（code==200，这是我的自定义json响应），将调用onPostExecute
私有类UploadAsyncTask扩展了AsyncTask{
private Context context;
private Exception exception;
private ProgressDialog progressDialog;
private UploadAsyncTask(Context context) {
this.context = context;
}
@Override
protected Boolean doInBackground(String... params) {
String uploadUrl = URL + "upload";
HttpResponse response = null;
try {
HttpPost post = new HttpPost(uploadUrl);
// Entity
MultipartEntityBuilder multipartEntityBuilder = MultipartEntityBuilder.create();
// Add your file
multipartEntityBuilder.addPart("file", new FileBody(new File(params[0])));
// Progress listener - updates task's progress
MyHttpEntity.ProgressListener progressListener =
new MyHttpEntity.ProgressListener() {
@Override
public void transferred(float progress) {
UploadAsyncTask.this.publishProgress((int) progress);
}
};
// POST
post.setEntity(new MyHttpEntity(multipartEntityBuilder.build(),
progressListener));
// Handle response
GsonBuilder builder = new GsonBuilder();
LinkedTreeMap object = builder.create().fromJson(
EntityUtils.toString(client.execute(post).getEntity()),
LinkedTreeMap.class);
if ((double) object.get("code") == 200.0) {
return true;
}
} catch (UnsupportedEncodingException | JsonSyntaxException | ClientProtocolException e) {
e.printStackTrace();
Log.e("UPLOAD", e.getMessage());
this.exception = e;
} catch (IOException e) {
e.printStackTrace();
}
return false;
}
@Override
protected void onPreExecute() {
// Init and show dialog
this.progressDialog = new ProgressDialog(this.context);
this.progressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
this.progressDialog.show();
}
@Override
protected void onPostExecute(Boolean result) {
// Close dialog
this.progressDialog.dismiss();
if (result) {
Toast.makeText(getApplicationContext(),
R.string.upload_success, Toast.LENGTH_LONG).show();
} else {
Toast.makeText(getApplicationContext(),
R.string.upload_failure, Toast.LENGTH_LONG).show();
}
}
@Override
protected void onProgressUpdate(Integer... progress) {
// Update process
this.progressDialog.setProgress((int) progress[0]);
}
}
在Acitvity
中调用上载：
私有void_upload（）{
}
我试图实现类似的目标（我使用ProgressDialog
而不是ProgressBar
）。您必须使用AsyncTask
，这样主线程就不会等待上载完成（上载必须是异步的）
为HttpEntityWrapped
（信用证：）创建扩展名：
}
我已经创建了一个私有类，它在活动中扩展异步任务
。在doInBackground
中，您可以使用MultipartEntityBuilder
添加文件和所需的任何内容。如果上传成功（code==200，这是我的自定义json响应），将调用onPostExecute
私有类UploadAsyncTask扩展了AsyncTask{
private Context context;
private Exception exception;
private ProgressDialog progressDialog;
private UploadAsyncTask(Context context) {
this.context = context;
}
@Override
protected Boolean doInBackground(String... params) {
String uploadUrl = URL + "upload";
HttpResponse response = null;
try {
HttpPost post = new HttpPost(uploadUrl);
// Entity
MultipartEntityBuilder multipartEntityBuilder = MultipartEntityBuilder.create();
// Add your file
multipartEntityBuilder.addPart("file", new FileBody(new File(params[0])));
// Progress listener - updates task's progress
MyHttpEntity.ProgressListener progressListener =
new MyHttpEntity.ProgressListener() {
@Override
public void transferred(float progress) {
UploadAsyncTask.this.publishProgress((int) progress);
}
};
// POST
post.setEntity(new MyHttpEntity(multipartEntityBuilder.build(),
progressListener));
// Handle response
GsonBuilder builder = new GsonBuilder();
LinkedTreeMap object = builder.create().fromJson(
EntityUtils.toString(client.execute(post).getEntity()),
LinkedTreeMap.class);
if ((double) object.get("code") == 200.0) {
return true;
}
} catch (UnsupportedEncodingException | JsonSyntaxException | ClientProtocolException e) {
e.printStackTrace();
Log.e("UPLOAD", e.getMessage());
this.exception = e;
} catch (IOException e) {
e.printStackTrace();
}
return false;
}
@Override
protected void onPreExecute() {
// Init and show dialog
this.progressDialog = new ProgressDialog(this.context);
this.progressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
this.progressDialog.show();
}
@Override
protected void onPostExecute(Boolean result) {
// Close dialog
this.progressDialog.dismiss();
if (result) {
Toast.makeText(getApplicationContext(),
R.string.upload_success, Toast.LENGTH_LONG).show();
} else {
Toast.makeText(getApplicationContext(),
R.string.upload_failure, Toast.LENGTH_LONG).show();
}
}
@Override
protected void onProgressUpdate(Integer... progress) {
// Update process
this.progressDialog.setProgress((int) progress[0]);
}
}
在Acitvity
中调用上载：
私有void_upload（）{
}
您可以将其包装在AsyncTask中，使用onPrexcute（）显示进度条，并将进度条隐藏在onPostExecute（）中……假设您关心的只是一个不确定的进度条。不是真的……我想显示进度。顺便问一下，你有一个不确定进度条的示例代码吗？早些时候，我使用了更简单的DataOutputStream，在显示进度时使用Asynctask上传文件，所以我可能会弄明白。只需将a与android:UndeterminatedRavable=“@drawable/yourDrawable”AttAttribute一起使用即可。@erdomester您找到解决方案了吗？我不理解这个问题，因为您无法从android的UI线程中使用HTTP（或任何*TP），因此，您需要一个后台线程，因此您需要AsyncTask所做的一切，所以只需使用它。换句话说，“ProgressBar？”和“AsyncTask？”的问题与上载文件的问题是不相关的，因此，如果您使用它们的示例开始使用它们，然后才放入HTTP内容（然后才放入ProgressiveEntity），您可能会遇到一些问题。您可以将其包装在AsyncTask中，使用onPrexcute（）显示进度条，并将进度条隐藏在onPostExecute（）中…假设您只关心不确定的进度条。不是真的…我想显示进度。顺便问一下，你有一个不确定进度条的示例代码吗？早些时候，我使用了更简单的DataOutputStream，在显示进度时使用Asynctask上传文件，所以我可能会弄明白。只需将a与android:UndeterminatedRavable=“@drawable/yourDrawable”AttAttribute一起使用即可。@erdomester您找到解决方案了吗？我不理解这个问题，因为您无法从android的UI线程中使用HTTP（或任何*TP），因此，您需要一个后台线程，因此您需要AsyncTask所做的一切，所以只需使用它。换句话说，“ProgressBar？”和“AsyncTask？”的问题与上载文件的问题是不相关的，因此，如果您使用它们的示例开始使用它们，然后才放入HTTP内容（然后才放入ProgressiveEntity），那么您可能会遇到一些问题。
UploadAsyncTask task = new UploadAsyncTask(this);
task.execute();