android 文件上传与下载（带进度条）

来源：互联网发布：软件许可使用证书编辑：程序博客网时间：2024/05/22 06:24

原文地址：http://write.blog.csdn.net/postedit

privatevoiduploadAttachment(finalString path) {

File file =newFile(path);

if(!file.exists()) {

Toast.makeText(EditWorkDiaryActivity.this,"不存在该附件文件",

Toast.LENGTH_SHORT).show();

return;

}

String serviceAddress =jyBoxApplication.getServiceAddress();

String url ="http://"+ serviceAddress +"/app/worklog/uploadFile.htm";

// Stringurl

// ="http://192.168.0.139:8080/app/worklog/addOrUpdateWorkLog.htm";

UserInfo userInfo =jyBoxApplication.getUserInfo();

String keyCode =jyBoxApplication.getKeyCode();

RequestParams params =newRequestParams();

params.put("keyCode", keyCode);

params.put("devicesType", 2);

params.put("person_id", userInfo.getPersonId());

try{

params.put("file", file);

}catch(FileNotFoundException e1) {

//TODOAuto-generated catch block

e1.printStackTrace();

}

params.put("type", 1);

HttpAsyncUtil.post(url, params,newJsonHttpResponseHandler() {

@Override

publicvoidonSuccess(intstatusCode, Header[] headers,

JSONObject response) {

try{

intstatus = response.getInt("status");

if(status == 1) {

progress.dismiss();

Toast.makeText(EditWorkDiaryActivity.this,"上传成功",

Toast.LENGTH_SHORT).show();

JSONObject dataJsonObject = response

.getJSONObject("data");

longid = 0;

if(dataJsonObject !=null) {

String attachmentId = dataJsonObject

.getString("attachmentId");

id = Long.valueOf(attachmentId);

}

String fileName = path.substring(path.lastIndexOf("/") + 1);

Attachment attachment =newAttachment();

attachment.setName(fileName);

attachment.setPath(path);

attachment.setId(id);

attachmentList.add(attachment);

attachmentAdapter.notifyDataSetChanged();

intheight = 70 *attachmentList.size();

ViewGroup.LayoutParams params =attmentListView

.getLayoutParams();

DisplayMetrics metrics =newDisplayMetrics();

getWindowManager().getDefaultDisplay().getMetrics(

metrics);

intheighDP = Utils.getDPI(height, metrics);

params.height= heighDP;

attmentListView.setLayoutParams(params);

attmentListView.setVisibility(View.VISIBLE);

attachmentAdapter.notifyDataSetChanged();

}else{

progress.dismiss();

Toast.makeText(EditWorkDiaryActivity.this,"提交异常",

Toast.LENGTH_SHORT).show();

}

}catch(JSONException e) {

progress.dismiss();

Toast.makeText(EditWorkDiaryActivity.this,"系统异常",

Toast.LENGTH_SHORT).show();

//TODOAuto-generated catch block

e.printStackTrace();

}

@Override

publicvoidonProgress(longbytesWritten,longtotalSize) {

super.onProgress(bytesWritten, totalSize);

intcount = (int) ((bytesWritten * 1.0 / totalSize) * 100);

// 上传进度显示

progress.setProgress(count);

Log.e("上传 Progress>>>>>", bytesWritten + " / " + totalSize);

}

@Override

publicvoidonFailure(intstatusCode, Header[] headers,

String responseString, Throwable throwable) {

progress.dismiss();

Toast.makeText(EditWorkDiaryActivity.this,"上传失败",

Toast.LENGTH_SHORT).show();

}

});

}

1.通过 newAsyncHttpClient().post(urlString, params, res); 直接可上传文件

回调方法 onProgress 可计算上传的百分比

2.初始化进度条组件

progress=newProgressDialog(EditWorkDiaryActivity.this);

progress.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);

progress.setMessage("附件上传");

progress.setOnCancelListener(newDialogInterface.OnCancelListener() {

@Override

publicvoidonCancel(DialogInterface dialog) {

progress.dismiss();

HttpAsyncUtil.cancel(EditWorkDiaryActivity.this,

true);

}

});

progress.setCancelable(true);

progress.~~setButton~~("取消",

newDialogInterface.OnClickListener() {

@Override

publicvoidonClick(DialogInterface dialog,

intwhich) {

progress.dismiss();

HttpAsyncUtil.cancel(

EditWorkDiaryActivity.this,true);

}

});

progress.show();

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