java - file.getName() 什么都不返回

Question

我需要获取为用户选择的 CSV 文件的名称，但 getName() 方法没有返回任何值。

这是代码

private void readCSV(Uri uri) {
    InputStream is;
    File file = null;

    try {
        if (uri.getScheme().equals("file")) {
            file = new File(uri.toString());
            Log.i("File selected: ", file.getName()); //file.getName() doesn't work 
            is = new FileInputStream(file);

为什么不返回文件名？

编辑 1

    private void readCSV(Uri uri) {
        InputStream is;
        File file;

        try {
                 /*This conditional is false*/
            if (uri.getScheme().equals("file")) {
                file = new File(uri.toString());
                Log.i("File selected: ", file.getName()); //file.getName() doesn't
                is = new FileInputStream(file);
            } else {
               /* this part is the one that runs */

               is = this.getContentResolver().openInputStream(uri);
               Log.i("File selected: ", uri.getLastPathSegment()); //i tried this, it returns me 5049 but it is not the name of the selected file
            }

Answer 1

uri.toString() 将返回对象引用而不是文件路径。

你应该调用 uri.getPath()