如何在android studio的内部存储中为andoidx创建文件夹? [英] how to create folder in internal storage in android studio for andoidx?

问题描述

如何在 android studio 的内部存储中创建文件夹并在所有 android 版本中工作，直到 android Q.

how to create folder in internal storage in android studio and works in all android versions till android Q.

推荐答案

AndroidManifest.xml

在清单文件中添加权限

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

为应用添加请求遗留外部存储

add request legacy external storage for application

<application
            android:requestLegacyExternalStorage="true">
</application>

MainActivity.this

添加此代码 MainActivity.this 文件

add this code MainActivity.this file

File f = new File(Environment.getExternalStorageDirectory(), "My folder");
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
            try {
               Files.createDirectory(Paths.get(f.getAbsolutePath()));
            } catch (IOException e) {
                e.printStackTrace();
                Toast.makeText(getApplicationContext(), e.getLocalizedMessage(), Toast.LENGTH_LONG).show();
            }
        } else {
            f.mkdir();
            f.mkdirs();
            Toast.makeText(getApplicationContext(), f.getPath(), Toast.LENGTH_LONG).show();
        }

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