Question

用asynchttpclient上传文件能获取上传进度吗

Answer 1

图片上传

[java] view plain copy
/**
* @param path
* 要上传的文件路径
* @param url
* 服务端接收URL
* @throws Exception
*/
public static void uploadFile(String path, String url) throws Exception {
File file = new File(path);
if (file.exists() && file.length() > 0) {
AsyncHttpClient client = new AsyncHttpClient();
RequestParams params = new RequestParams();
params.put("uploadfile", file);
// 上传文件
client.post(url, params, new AsyncHttpResponseHandler() {
@Override
public void onSuccess(int statusCode, Header[] headers,
byte[] responseBody) {
// 上传成功后要做的工作
Toast.makeText(mContext, "上传成功", Toast.LENGTH_LONG).show();
progress.setProgress(0);
}

@Override
public void onFailure(int statusCode, Header[] headers,
byte[] responseBody, Throwable error) {
// 上传失败后要做到工作
Toast.makeText(mContext, "上传失败", Toast.LENGTH_LONG).show();
}

@Override
public void onProgress(int bytesWritten, int totalSize) {
// TODO Auto-generated method stub
super.onProgress(bytesWritten, totalSize);
int count = (int) ((bytesWritten * 1.0 / totalSize) * 100);
// 上传进度显示
progress.setProgress(count);
Log.e("上传 Progress>>>>>", bytesWritten + " / " + totalSize);
}

@Override
public void onRetry(int retryNo) {
// TODO Auto-generated method stub
super.onRetry(retryNo);
// 返回重试次数
}

});
} else {
Toast.makeText(mContext, "文件不存在", Toast.LENGTH_LONG).show();
}

图片下载

[java] view plain copy
/**
* @param url
* 要下载的文件URL
* @throws Exception
*/
public static void downloadFile(String url) throws Exception {

AsyncHttpClient client = new AsyncHttpClient();
// 指定文件类型
String[] allowedContentTypes = new String[] { "image/png", "image/jpeg" };
// 获取二进制数据如图片和其他文件
client.get(url, new BinaryHttpResponseHandler(allowedContentTypes) {

@Override
public void onSuccess(int statusCode, Header[] headers,
byte[] binaryData) {
String tempPath = Environment.getExternalStorageDirectory()
.getPath() + "/temp.jpg";
// TODO Auto-generated method stub
// 下载成功后需要做的工作
progress.setProgress(0);
//
Log.e("binaryData:", "共下载了：" + binaryData.length);
//
Bitmap bmp = BitmapFactory.decodeByteArray(binaryData, 0,
binaryData.length);

File file = new File(tempPath);
// 压缩格式
CompressFormat format = Bitmap.CompressFormat.JPEG;
// 压缩比例
int quality = 100;
try {
// 若存在则删除
if (file.exists())
file.delete();
// 创建文件
file.createNewFile();
//
OutputStream stream = new FileOutputStream(file);
// 压缩输出
bmp.compress(format, quality, stream);
// 关闭
stream.close();
//
Toast.makeText(mContext, "下载成功\n" + tempPath,
Toast.LENGTH_LONG).show();

} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}

}

@Override
public void onFailure(int statusCode, Header[] headers,
byte[] binaryData, Throwable error) {
// TODO Auto-generated method stub
Toast.makeText(mContext, "下载失败", Toast.LENGTH_LONG).show();
}

@Override
public void onProgress(int bytesWritten, int totalSize) {
// TODO Auto-generated method stub
super.onProgress(bytesWritten, totalSize);
int count = (int) ((bytesWritten * 1.0 / totalSize) * 100);
// 下载进度显示
progress.setProgress(count);
Log.e("下载 Progress>>>>>", bytesWritten + " / " + totalSize);

}

@Override
public void onRetry(int retryNo) {
// TODO Auto-generated method stub
super.onRetry(retryNo);
// 返回重试次数
}

});

PHP服务端

[php] view plain copy
<?php
$base_path = "./upload/"; // 接收文件目录
$target_path = $base_path . basename ( $_FILES ['uploadfile'] ['name'] );
if (move_uploaded_file ( $_FILES ['uploadfile'] ['tmp_name'], $target_path )) {
$array = array (
"code" => "1",
"message" => $_FILES ['uploadfile'] ['name']
);
echo json_encode ( $array );
} else {
$array = array (
"code" => "0",
"message" => "There was an error uploading the file, please try again!" . $_FILES ['uploadfile'] ['error']
);
echo json_encode ( $array );
}
?>