解析：无法上传文件 [英] Parse: cannot upload file
问题描述
首先，选择文件
public void onClick（View arg0）{
Intent intent = new Intent（Intent.ACTION_GET_CONTENT）;
intent.setType（* / *）;
// intent.addCategory（Intent.CATEGORY_OPENABLE）;
尝试{
Log.d（TAG，Select file）;
startActivityForResult（
Intent.createChooser（intent，选择要上传的文件），
RESULT_LOAD_FILE）;
} catch（android.content.ActivityNotFoundException ex）{
//可能用一个对话框将用户带到市场
Toast.makeText（MainActivity.this，请安装一个文件管理器。 ，Toast.LENGTH_SHORT）.show（）;
}
// here
}
我猜基于logcat选择文件没有问题。但是...
$ b $ pre $ public void onActivityResult（int requestCode，int resultCode，Intent data）
{
super.onActivityResult（requestCode，resultCode，data）;
Log.d（TAG，requestCode +/+ RESULT_LOAD_FILE +/+ resultCode +/+ RESULT_OK）;
if（data！= null）Log.d（TAG，data.toString（））;
else Log.d（TAG，data null）;
//获取文件名
字符串fileNameSegments [] = filePath.split（/）;
fileName = fileNameSegments [fileNameSegments.length - 1];
//将其转换为字节
byte [] fileByte = fileName.getBytes（）;
//创建ParseFile
ParseFile文件= new ParseFile（fileName，fileByte）;
//将图片上传到Parse Cloud
file.saveInBackground（）;
//在Parse
中创建一个名为ImageUpload的新类ParseObject fileupload = new ParseObject（FileUpload）;
//创建一个名为ImageName的列并设置字符串
fileupload.put（FileName，fileName）;
//创建一个名为ImageFile的列并插入图片
fileupload.put（DocFile，file）;
//创建类和列
fileupload.saveInBackground（）;
//显示一个简单的吐司消息
Toast.makeText（MainActivity.this，File Uploaded，Toast.LENGTH_SHORT）.show（）;
logcat显示 requestCode ， RESULT_LOAD_FILE ， resultCode 和 RESULT_OK -1和-1。并且数据不为null，如logcat： Intent {dat = content：//com.android.externalstorage.documents/document/0A09-1112：Download / Contact n Tort.pdf flg = 0x1}
当我点击.pdf文件后，触发了出错了但我找不到是什么原因。
编辑：
转换文件后抛出空指针异常路径到字节，当我删除try catch块时，应该是这样的。
b $ b
Uri uri = data.getData（）;
//获取路径
filePath = uri.getPath（）;
//获取文件名
字符串fileNameSegments [] = filePath.split（/）;
fileName = fileNameSegments [fileNameSegments.length - 1];
//将其转换为字节
byte [] fileByte = fileName.getBytes（）;
//创建ParseFile
ParseFile文件= new ParseFile（fileName，fileByte）;
//将文件上传到Parse Cloud
file.saveInBackground（）;
//在Parse $ b $中创建一个名为FileUpload的新类ParseObject fileUpload = new ParseObject（FileUpload）;
//创建一个名为FileName的列并设置字符串
fileUpload.put（FileName，fileName）;
Log.d（TAG，image file）;
//创建一个名为ImageFile的列并插入图片
fileUpload.put（DocFile，file）;
//创建类和列
fileUpload.saveInBackground（）;
Log.d（TAG，toast）;
//显示一个简单的吐司消息
Toast.makeText（MainActivity.this，File Uploaded，
Toast.LENGTH_SHORT）.show（）;
尽管这个类没有在解析仪表板中创建，但我想这需要另一个帖子。
I want to make an app which have upload file function. But the problem is, I unable to find where did I do wrong.
First, choose the file
public void onClick(View arg0) {
Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
intent.setType("*/*");
// intent.addCategory(Intent.CATEGORY_OPENABLE);
try {
Log.d(TAG, "Select file");
startActivityForResult(
Intent.createChooser(intent, "Select a File to Upload"),
RESULT_LOAD_FILE);
} catch (android.content.ActivityNotFoundException ex) {
// Potentially direct the user to the Market with a Dialog
Toast.makeText(MainActivity.this, "Please install a File Manager.", Toast.LENGTH_SHORT).show();
}
// here
}
I guess there's no problem when choosing the file based on the logcat. But...
public void onActivityResult(int requestCode, int resultCode, Intent data)
{
super.onActivityResult(requestCode, resultCode, data);
Log.d(TAG, requestCode+"/"+RESULT_LOAD_FILE+"/"+resultCode+"/"+RESULT_OK);
if (data != null) Log.d(TAG, data.toString());
else Log.d(TAG, "data null");
// get file name
String fileNameSegments[] = filePath.split("/");
fileName = fileNameSegments[fileNameSegments.length - 1];
// convert it to byte
byte[] fileByte = fileName.getBytes();
// Create the ParseFile
ParseFile file = new ParseFile(fileName, fileByte);
// Upload the image into Parse Cloud
file.saveInBackground();
// Create a New Class called "ImageUpload" in Parse
ParseObject fileupload = new ParseObject("FileUpload");
// Create a column named "ImageName" and set the string
fileupload.put("FileName", fileName);
// Create a column named "ImageFile" and insert the image
fileupload.put("DocFile", file);
// Create the class and the columns
fileupload.saveInBackground();
// Show a simple toast message
Toast.makeText(MainActivity.this, "File Uploaded", Toast.LENGTH_SHORT).show();
}
The logcat show requestCode, RESULT_LOAD_FILE, resultCode and RESULT_OK 1, 1, -1 and -1 respectively. And the data is not null, as in logcat: Intent { dat=content://com.android.externalstorage.documents/document/0A09-1112:Download/Contact n Tort.pdf flg=0x1 }
After I click the .pdf file, it triggered the toast Something went wrong but I can't find what the reason.
EDITED: Throw null pointer exception after convert the file path to byte, when I remove the try catch block
it should be like this
Uri uri = data.getData();
// get path
filePath = uri.getPath();
// get file name
String fileNameSegments[] = filePath.split("/");
fileName = fileNameSegments[fileNameSegments.length - 1];
// convert it to byte
byte[] fileByte = fileName.getBytes();
// Create the ParseFile
ParseFile file = new ParseFile(fileName, fileByte);
// Upload the file into Parse Cloud
file.saveInBackground();
// Create a New Class called "FileUpload" in Parse
ParseObject fileUpload = new ParseObject("FileUpload");
// Create a column named "FileName" and set the string
fileUpload.put("FileName", fileName);
Log.d(TAG, "image file");
// Create a column named "ImageFile" and insert the image
fileUpload.put("DocFile", file);
// Create the class and the columns
fileUpload.saveInBackground();
Log.d(TAG, "toast");
// Show a simple toast message
Toast.makeText(MainActivity.this, "File Uploaded",
Toast.LENGTH_SHORT).show();
though the class not created in parse dashboard but I guess that need another post.
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