Question

我正在使用以下方法来调用任何文件，但它无法正常工作。

private void fileIntent(int file)
    {
        if ((ActivityCompat.checkSelfPermission(ICShowFileCabinetDetails.this, Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) && Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            requestPermissions(new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, file);
        } else {
            Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
            intent.setType("*/*");
            startActivityForResult(Intent.createChooser(intent, "Select File"), file);
        }

    }

以下权限在清单

中设置

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />

OnActivtyresult

@Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
 if (requestCode == SELECT_FILE && data != null) {
            try {
                mProPic = MediaStore.Images.Media.getBitmap(getApplicationContext().getContentResolver(), data.getData());

                Uri selectedImage = data.getData();

                String[] filePathColumn = {MediaStore.Images.Media.DATA};

                Cursor cursor = getContentResolver().query(selectedImage,
                        filePathColumn, null, null, null);
                cursor.moveToFirst();
                int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
                String picturePath = cursor.getString(columnIndex);

//                String filename = selectedImage.getLastPathSegment();

                String[] filenames = picturePath.split("\\/");


                int count = filenames.length;
                String name = filenames[count - 1];


                imagepickerselected = 1;
                UploadIamgeinServer(1, name);

            } catch (IOException e) {
                e.printStackTrace();
            }
        }
}

每当我点击按钮点击选择文件时，选择文件开启。但是所有文件都显示为隐藏，除了图像，点击doest工作。没有方法，按钮点击工作正常。如果有人在代码中发现错误，请告诉我。

由于

Answer 1

试试这段代码我的代码仅供.xls使用你的代码。或在清单文件中添加读写权限

oncreate declare permission

 if (ContextCompat.checkSelfPermission(this,
            Manifest.permission.WRITE_EXTERNAL_STORAGE)
            != PackageManager.PERMISSION_GRANTED) {
        if (ActivityCompat.shouldShowRequestPermissionRationale(this,
                Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
        } else {
            ActivityCompat.requestPermissions(this,
                    new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE},23
            );
        }
    }

点击你的按钮写下这段代码

path= String.valueOf(Environment.getExternalStorageDirectory());
                File file = new File(path);
                Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
                intent.setDataAndType(Uri.fromFile(file), "application/vnd.ms-excel");

                try {
                    startActivityForResult(pdfOpenintent.createChooser(intent, "Select file"), 0);                }
                catch (ActivityNotFoundException e) {

                }

onactivityresult yud get file path

public void onActivityResult(int requestCode, int resultCode, Intent result){
        if (resultCode == RESULT_OK){
            if (requestCode == 0) {
                Uri data = result.getData();

                else{
                    //  CommonMethods.ShowMessageBox(CraneTrackActivity.this, "Invalid file type");
                    Toast.makeText(Import_act.this,"Wrong File Selected ", Toast.LENGTH_SHORT).show();
                }
            }
        }
    }

Answer 2

我认为你应该添加像这个intent.addCategory（Intent.CATEGORY_OPENABLE）; 。有关更多信息，请访问此链接Select File from file manager via Intent。我希望这对你有帮助。

在android中使用intent选择任何文件

2 个答案: