简单的Android目录选择器-如何? [英] Simple Android Directory picker - How?

问题描述

我刚开始在Android Studio中进行编码，感觉棒极了.. !!

如何为目录选择器"编写代码.即，单击按钮后，将显示一个简单的对话/活动"屏幕，其中可以显示目录列表.

此外，要将该目录中的所有文件存储到Array变量中. (一旦单击确定"按钮).

PS:我在这里搜索过，发现一些很酷的文件选择"，但是我正在寻找目录选择器.

谢谢.

解决方案

尝试使用Intent.ACTION_OPEN_DOCUMENT_TREE

if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.LOLLIPOP) {
            Intent i = new Intent(Intent.ACTION_OPEN_DOCUMENT_TREE);
            i.addCategory(Intent.CATEGORY_DEFAULT);
            startActivityForResult(Intent.createChooser(i, "Choose directory"), 9999);
        }

然后从onActivityResult data.getData()获取结果Uri

@Override
    protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
        super.onActivityResult(requestCode, resultCode, data);

        switch(requestCode) {
            case 9999:
                Log.i("Test", "Result URI " + data.getData());
                break;
        }

    }

I have just started coding in Android Studio and feeling Awesome..!!

How can I write a code for a 'Directory Picker'. i.e., When a button is clicked, a simple Dialog/Activity screen which can show list of directories.

Also, want to store all the files in that directory in to an Array variable. (Once OK button is clicked).

PS: I have searched here and found some cool 'File choose' but m looking for Directory Chooser..!

Thanks in advance.

解决方案

Try to use Intent.ACTION_OPEN_DOCUMENT_TREE

if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.LOLLIPOP) {
            Intent i = new Intent(Intent.ACTION_OPEN_DOCUMENT_TREE);
            i.addCategory(Intent.CATEGORY_DEFAULT);
            startActivityForResult(Intent.createChooser(i, "Choose directory"), 9999);
        }

And get result Uri from onActivityResult data.getData()

@Override
    protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
        super.onActivityResult(requestCode, resultCode, data);

        switch(requestCode) {
            case 9999:
                Log.i("Test", "Result URI " + data.getData());
                break;
        }

    }

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