Android的 - 如何从文件中获取选中的文件名 [英] Android - How to get selected file name from the document

问题描述

我推出了使用以下code。选择documnets的意图。

I am launching the intent for selecting documnets using following code.

private void showFileChooser() {
    Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
    intent.setType("*/*");
    intent.addCategory(Intent.CATEGORY_OPENABLE);

    try {
        startActivityForResult(
                Intent.createChooser(intent, "Select a File to Upload"), 1);
    } catch (android.content.ActivityNotFoundException ex) {
        // Potentially direct the user to the Market with a Dialog
        Toast.makeText(this, "Please install a File Manager.",
                Toast.LENGTH_SHORT).show();
    }
}

在onActivity结果时，我想获得它给文件名的地方一些其他数字文件的路径。

In onActivity results when i am trying to get the file path it is giving some other number in the place of file name.

    @Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    switch (requestCode) {
    case 1:
        if (resultCode == RESULT_OK) {
            // Get the Uri of the selected file
            Uri uri = data.getData();
            File myFile = new File(uri.toString());
            String path = myFile.getAbsolutePath();
        }
        break;
    }
    super.onActivityResult(requestCode, resultCode, data);
}

这路径值我收到这样。
内容：//com.android.providers.downloads.documents/document/1433
但我想真正的文件名称，如doc1.pdf等。如何获得呢？

That path value i am getting like this. "content://com.android.providers.downloads.documents/document/1433" But i want real file name like doc1.pdf etc.. How to get it?

推荐答案

当你得到一个内容：// URI，你需要查询的内容解析，然后抢在显示名称

When you get a content:// uri, you'll need to query a content resolver and then grab the display name.

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    switch (requestCode) {
    case 1:
        if (resultCode == RESULT_OK) {
            // Get the Uri of the selected file
            Uri uri = data.getData();
            String uriString = uri.toString();
            File myFile = new File(uriString);
            String path = myFile.getAbsolutePath();
            String displayName = null;

            if (uriString.startsWith("content://")) {                   
                Cursor cursor = null;
                try {                           
                    cursor = getActivity().getContentResolver().query(uri, null, null, null, null);                         
                    if (cursor != null && cursor.moveToFirst()) {                               
                        displayName = cursor.getString(cursor.getColumnIndex(OpenableColumns.DISPLAY_NAME));
                    }
                } finally {
                    cursor.close();
                }
            } else if (uriString.startsWith("file://")) {           
                displayName = myFile.getName();
            }
        }
        break;
    }
    super.onActivityResult(requestCode, resultCode, data);
}

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