我正在完成从库中挑选文件的任务,并将挑选的文件上传到服务器.
protected void onActivityResult(int requestCode,int resultCode,Intent data) {
super.onActivityResult(requestCode,resultCode,data);
if (resultCode == Activity.RESULT_OK) {
if (requestCode == PICK_FILE_REQUEST) {
if (data != null) {
//no data present
Uri uri = data.getData();
String filePath = data.getData().getPath();
// String path = uri.getPath();
file = new File(filePath);
String name = getContentName(getContentResolver(),uri);
try {
InputStream inStream = getContentResolver().openInputStream(uri);
} catch (FileNotFoundException e) {
e.printStackTrace();
}
try {
bitmap = MediaStore.Images.Media.getBitmap(this.getContentResolver(),uri);
} catch (IOException e) {
e.printStackTrace();
}
LinearLayout linearLayout = new LinearLayout(this);
linearLayout.setLayoutParams(new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT,LinearLayout.LayoutParams.WRAP_CONTENT));
linearLayout.setOrientation(LinearLayout.VERTICAL);
ImageView imageView = new ImageView(this);
imageView.setImageBitmap(bitmap);
attachFile.addView(imageView);
TextView textView = new TextView(this);
textView.setText(name);
attachFile.addView(textView);
return;
}
}
}
我通过使用意图来挑选文件
Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
intent.setType("*/*");
intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
//intent.addFlags(ST)
startActivityForResult(Intent.createChooser(intent,"Choose File to Upload.."),PICK_FILE_REQUEST);
我的问题是uri数据被转换为inputStream但我使用离子库,因为输入流文件无法上传到服务器.
如何将inputStream转换为outputstream以保存在getCacheDir()中.我引用了这个站点How to get the file path for the picked files from the external storage in android?
请帮我如何将InputStream数据上传到离子库.
最佳答案
在下面的代码中,我已经将uri传递到输入流,然后创建文件,并将inputStream数据写入outputstream.
这100％尝试这种方法.
原文链接：https://www.f2er.com/android/430120.html这100％尝试这种方法.
@Override
protected void onActivityResult(int requestCode,Intent data) {
super.onActivityResult(requestCode,data);
if (resultCode == Activity.RESULT_OK) {
if (requestCode == PICK_FILE_REQUEST) if (data != null) {
//no data present
Uri uri = data.getData();
String filePath = data.getData().getPath();
String name = getContentName(getContentResolver(),uri);
File file = new File(getCacheDir(),name);
int maxBufferSize = 1 * 1024 * 1024;
try {
InputStream inputStream = getContentResolver().openInputStream(uri);
Log.e("InputStream Size","Size " + inputStream);
int bytesAvailable = inputStream.available();
// int bufferSize = 1024;
int bufferSize = Math.min(bytesAvailable,maxBufferSize);
final byte[] buffers = new byte[bufferSize];
FileOutputStream outputStream = new FileOutputStream(file);
int read = 0;
while ((read = inputStream.read(buffers)) != -1) {
outputStream.write(buffers,read);
}
Log.e("File Size","Size " + file.length());
inputStream.close();
outputStream.close();
file.getPath();
Log.e("File Path","Path " + file.getPath());
file.length();
Log.e("File Size","Size " + file.length());
if(file.length() > 0){
attachementImage.setVisibility(View.INVISIBLE);
}
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
try {
bitmap = MediaStore.Images.Media.getBitmap(this.getContentResolver(),uri);
} catch (IOException e) {
e.printStackTrace();
}
imageView.setImageBitmap(bitmap);
attachFile.addView(imageView);
attachFile.addView(textView);
return;
}
}
}
