为什么它没有通过Android中的意图打开已定义的文件夹?

问题描述

此代码将重定向到具有打开的导航功能的驱动器，但未打开实际的给定路径

旧代码

Uri uri = Uri.parse(Environment.getExternalStorageDirectory().getPath() + "/foldername/");
Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
intent.addCategory(Intent.CATEGORY_OPENABLE);
intent.setDataAndType(uri, "text/csv");
startActivity(intent);

我通过uri获取的路径值为:
/storage/emulated/0/myfolder

The path value I am getting through uri is:
/storage/emulated/0/myfolder

新代码

Intent resultIntent = new Intent(Intent.ACTION_OPEN_DOCUMENT);
resultIntent.addCategory(Intent.CATEGORY_OPENABLE);
Uri uri = 
Uri.parse(Environment.getExternalStorageDirectory().getPath() + 
"/myfolder/");
resultIntent.setType("*/*");
resultIntent.putExtra("android.provider.extra.INITIAL_URI", uri);
// show the entire internal storage tree
//resultIntent.putExtra("android.content.extra.SHOW_ADVANCED", true);
startActivity(resultIntent);

让我知道问题所在，此代码中的问题所在.

Let me know the issue where is the problem in this code.

推荐答案

private static final int READ_REQUEST_CODE = 10;
...
/**
 * Fires an intent to spin up the "file chooser" UI and select an image.
 */
public void performFileSearch() {

    Intent intent = new Intent(Intent.ACTION_OPEN_DOCUMENT);
    intent.addCategory(Intent.CATEGORY_OPENABLE);
    intent.setType(uri, "text/*");

    startActivityForResult(intent, READ_REQUEST_CODE);
}

@Override
public void onActivityResult(int requestCode, int resultCode,
        Intent resultData) {

    if (requestCode == READ_REQUEST_CODE && resultCode == Activity.RESULT_OK) {

        Uri uri = null;
        if (resultData != null) {
            uri = resultData.getData();
            Log.i(TAG, "Uri: " + uri.toString());
            showImage(uri);
        }
    }
}

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