[英]Unable to create folder inside Android/data
I'm facing a problem with creation of folder inside Android/data folder. 我在Android / data文件夹中创建文件夹时遇到问题。 My code need to create folder, and copy a file from asset folder inside it. 我的代码需要创建文件夹,并从其中的asset文件夹中复制文件。 This is my code: 这是我的代码:
private File getFileForShare(String filename) {
try {
String extStorageDirectory = Environment.getExternalStorageDirectory().toString();
File folder = new File(extStorageDirectory, "/Android/data/" + context.getPackageName());
if (!folder.exists()) {
folder.mkdir();
}
AssetManager am = context.getAssets();
InputStream inputStream = am.open("audio/" + filename);
File f = new File(folder.getAbsolutePath(), filename);
OutputStream outputStream = new FileOutputStream(f);
byte buffer[] = new byte[1024];
int length = 0;
while ((length = inputStream.read(buffer)) > 0) {
outputStream.write(buffer, 0, length);
}
outputStream.close();
inputStream.close();
return f;
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
I obtain a FileNotFoundException when i initialize OutputStream object. 我初始化OutputStream对象时获取FileNotFoundException。 Also, if i go to Android/data folder, no new folder with my app package name is created. 此外,如果我转到Android / data文件夹,则不会创建包含我的应用程序包名称的新文件夹。 Inside manifest i've set read and write storage permission. 在清单中我设置了读写存储权限。 What's wrong? 怎么了?
What's wrong? 怎么了?
The proper way to get a directory that, for the primary device owner, resides under Android/data/
on external storage, is just to call getExternalFilesDir()
on an available Context
. 获取主设备所有者驻留在外部存储上的Android/data/
下的目录的正确方法是在可用的Context
上调用getExternalFilesDir()
。 Replace: 更换:
String extStorageDirectory = Environment.getExternalStorageDirectory().toString();
File folder = new File(extStorageDirectory, "/Android/data/" + context.getPackageName());
with: 有:
File folder = context.getExternalFilesDir();
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