Android 已弃用Environment.getExternalStorageDirectory()。如何创建新文件夹?
在android Java上工作,最近将SDK更新为API级别29,现在显示了一条警告,指出 API级别29中不推荐使用Environment.getExternalStorageDirectory() 我的代码是Android 已弃用Environment.getExternalStorageDirectory()。如何创建新文件夹?,android,local-storage,Android,Local Storage,在android Java上工作,最近将SDK更新为API级别29,现在显示了一条警告,指出 API级别29中不推荐使用Environment.getExternalStorageDirectory() 我的代码是 val wallpaperDirectory = File(Environment.getExternalStorageDirectory(), "NewFolder") wallpaperDirectory.mkdir() 如何在内部存储中创建新文件夹从API 29开始
val wallpaperDirectory = File(Environment.getExternalStorageDirectory(), "NewFolder")
wallpaperDirectory.mkdir()
如何在内部存储中创建新文件夹从API 29开始,出于安全原因,他们不推荐使用此API。不过,您可以在上下文中访问这些api,然后它就可以工作了。不要使用环境。 参考:
有关相同的更多详细信息。您可以通过迁移到其他选项来访问存储在共享/外部存储上的内容,例如
上下文#getExternalFilesDir(String)
、媒体存储
、或意图#操作(u OPEN)文档
阅读:-
检查此演示
void createExternalStoragePrivateFile() {
// Create a path where we will place our private file on external
// storage.
File file = new File(getExternalFilesDir(null), "DemoFile.jpg");
try {
// your code
} catch (IOException e) {
// Unable to create file, likely because external storage is
// not currently mounted.
Log.w("ExternalStorage", "Error writing " + file, e);
}
}
void deleteExternalStoragePrivateFile() {
// Get path for the file on external storage. If external
// storage is not currently mounted this will fail.
File file = new File(getExternalFilesDir(null), "DemoFile.jpg");
file.delete();
}
boolean hasExternalStoragePrivateFile() {
// Get path for the file on external storage. If external
// storage is not currently mounted this will fail.
File file = new File(getExternalFilesDir(null), "DemoFile.jpg");
return file.exists();
}
这回答了你的问题吗?此代码可以工作,但我不会在应用程序内部保存。因为当我删除应用程序时,文件也会删除