在android Java上工作，最近将SDK更新到API级别29，现在显示警告，指出
Environment.getExternalStorageDirectory() 在API级别29中已弃用
我的代码是
private void saveImage() {
if (requestPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
final String folderPath = Environment.getExternalStorageDirectory() + "/PhotoEditors";
File folder = new File(folderPath);
if (!folder.exists()) {
File wallpaperDirectory = new File(folderPath);
wallpaperDirectory.mkdirs();
}
showLoading("Saving...");
final String filepath=folderPath
+ File.separator + ""
+ System.currentTimeMillis() + ".png";
File file = new File(filepath);
try {
file.createNewFile();
SaveSettings saveSettings = new SaveSettings.Builder()
.setClearViewsEnabled(true)
.setTransparencyEnabled(true)
.build();
if(isStoragePermissionGranted() ) {
mPhotoEditor.saveAsFile(file.getAbsolutePath(), saveSettings, new PhotoEditor.OnSaveListener() {
@Override
public void onSuccess(@NonNull String imagePath) {
hideLoading();
showSnackbar("Image Saved …我无法在android 10中创建目录。直到android Oreo，它都可以在设备上使用。
我尝试了两种创建文件夹的方法。
使用 File.mkdir()：
File f = new File(Environment.getExternalStorageDirectory().getAbsolutePath() + "/Pastebin");
if (!f.isFile()) {
if (!(f.isDirectory())) {
success = f.mkdir();
}
在此，变量success 始终为false，这表示未创建目录。
使用 Files.createDirectory()：
File f = new File(Environment.getExternalStorageDirectory().getAbsolutePath() + "/Pastebin");
if (!f.isFile()) {
if (!(f.isDirectory())) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
try {
Files.createDirectory(Paths.get(f.getAbsolutePath()));
} catch (IOException e) {
e.printStackTrace();
Toast.makeText(getApplicationContext(), R.string.unable_to_download, Toast.LENGTH_LONG).show();
}
} else {
f.mkdir();
}
}
导致此异常：
pzy64.pastebinpro W/System.err: java.nio.file.AccessDeniedException: /storage/emulated/0/Pastebin
pzy64.pastebinpro W/System.err: at sun.nio.fs.UnixFileSystemProvider.createDirectory(UnixFileSystemProvider.java:391)
pzy64.pastebinpro W/System.err: …