当我从Gallery中选择文件时，我收到了错误的文件名。我不知道我的代码有什么问题。非常感谢任何帮助
这是我的类AreaFragment extend Fragment
中的selectFile方法public void selectFile(){
final CharSequence[] items = {"Camera","Select image","Select video","Cancel"};
AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
builder.setTitle("Add file");
builder.setIcon(R.drawable.ic_photo_black_24dp);
builder.setItems(items, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int item) {
if (items[item].equals("Camera")) {
Intent i = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(i, REQUEST_CAMERA);
} else if (items[item].equals("Select image")) {
Intent i = new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
i.setType("image/*");
startActivityForResult(Intent.createChooser(i, "Select image"), PICK_IMAGE);
} else if (items[item].equals("Select video")) {
Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
intent.setType("video/*");
startActivityForResult(Intent.createChooser(intent, "Select video"), PICK_VIDEO);
}else if (items[item].equals("Cancel")) {
dialog.dismiss();
}
}
});
builder.show();
}
这是我的onActivityResult
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
final ImageView add_task_images = (ImageView) promptsView.findViewById(R.id.img_task_preview);
final LinearLayout image_wrapper = (LinearLayout) promptsView.findViewById(R.id.image_task_wrapper);
final VideoView video_task_preview = (VideoView) promptsView.findViewById(R.id.video_task_preview);
final LinearLayout video_task_wrapper = (LinearLayout) promptsView.findViewById(R.id.video_task_wrapper);
final TextView video_file_name = (TextView) promptsView.findViewById(R.id.video_file_name);
final TextView image_file_name = (TextView) promptsView.findViewById(R.id.image_file_name);
if (resultCode == getActivity().RESULT_OK) {
if (requestCode == REQUEST_CAMERA) {
Bitmap thumbnail = (Bitmap) data.getExtras().get("data");
ByteArrayOutputStream bytes = new ByteArrayOutputStream();
thumbnail.compress(Bitmap.CompressFormat.JPEG, 90, bytes);
File destination = new File(Environment.getExternalStorageDirectory(),
System.currentTimeMillis() + ".jpg");
FileOutputStream fo;
try {
destination.createNewFile();
fo = new FileOutputStream(destination);
fo.write(bytes.toByteArray());
fo.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
selectedImagePath = destination.getPath();
String img_name = destination.getName();
image_file_name.setText("File name: " + img_name ); // Get the wrong file name
image_wrapper.setVisibility(View.VISIBLE);
add_task_images.setImageBitmap(thumbnail);
} else if (requestCode == PICK_IMAGE) {
Uri selectedImageUri = data.getData();
String[] projection = {MediaStore.MediaColumns.DATA};
Cursor cursor = getActivity().managedQuery(selectedImageUri, projection, null, null, null);
int column_index = cursor.getColumnIndexOrThrow(MediaStore.MediaColumns.DATA);
cursor.moveToFirst();
selectedImagePath = cursor.getString(column_index);
Bitmap bm;
BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = true;
BitmapFactory.decodeFile(selectedImagePath, options);
final int REQUIRED_SIZE = 200;
int scale = 1;
while (options.outWidth / scale / 2 >= REQUIRED_SIZE
&& options.outHeight / scale / 2 >= REQUIRED_SIZE)
scale *= 2;
options.inSampleSize = scale;
options.inJustDecodeBounds = false;
bm = BitmapFactory.decodeFile(selectedImagePath, options);
add_task_images.setImageBitmap(bm);
String path = selectedImageUri.getPath();
File image_name = new File(path);
image_file_name.setText("File name: " + image_name.getName()); // Get the wrong file name
image_wrapper.setVisibility(View.VISIBLE);
} else if(requestCode == PICK_VIDEO){
Uri videoUri = data.getData();
video_task_preview.setVideoURI(videoUri);
String path = videoUri.getPath();
File filepath = new File(path);
video_file_name.setText("File name: " + filepath.getName()); //Get the wrong file name
video_task_wrapper.setVisibility(View.VISIBLE);
}
}
}
答案 0 :(得分：0)
首先你需要获取媒体的有效路径，然后使用file.getName（）来获取文件名，试试这个就行了。
if let slat = startlat {
if let slng = self.startlng {
if let elat = self.endlat {
if let elng = self.endlng {
Alamofire.request(.GET, "https://maps.googleapis.com/maps/api/directions/json?origin=\(slat,slng)&destination=\(elat,elng)" , encoding: .JSON)
.responseJSON { response in
let res = response.result.value!
self.estimatedDistance = (res["routes"]!![0]["legs"]!![0]["distance"]!!["value"] as! Int)/1000
self.estimatedTime = (res["routes"]!![0]["legs"]!![0]["duration"]!!["value"] as! Int)/60
print("\(self.estimatedDistance) - \(self.estimatedTime)")
}
}
}
}
}