setReadOnly 不起作用
我正在使用 setReadOnly 方法将我的应用程序目录存储在我的 SD 卡上“只读”。然而，即使我在清单中为应用程序提供了 android.permission.WRITE_EXTERNAL_STORAGE 权限，调用此方法时也会返回“false”。
这是我的代码：
is.close();
fos.close();
Decompress d = new Decompress(productDirectory + "/downloadedfile.zip", productDirectory + "/unzipped/");
d.unzip();
File zipfile = new File(productDirectory + "/downloadedfile.zip");
zipfile.delete();
productDirectory = new File(Environment.getExternalStorageDirectory().toString() + "/zipfiledemo");
boolean isWriteLocked = productDirectory.setReadOnly();
Log.v("Writing access locked",">>>>>>>>>>>>>>>>>>>" + isWriteLocked);
I am using setReadOnly method to make my app's directory stored on my SD card 'Read-only'. However this method when called is returning 'false' even though I have provided the app with android.permission.WRITE_EXTERNAL_STORAGE permission in the manifest.
Here's my code :
is.close();
fos.close();
Decompress d = new Decompress(productDirectory + "/downloadedfile.zip", productDirectory + "/unzipped/");
d.unzip();
File zipfile = new File(productDirectory + "/downloadedfile.zip");
zipfile.delete();
productDirectory = new File(Environment.getExternalStorageDirectory().toString() + "/zipfiledemo");
boolean isWriteLocked = productDirectory.setReadOnly();
Log.v("Writing access locked",">>>>>>>>>>>>>>>>>>>" + isWriteLocked);
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您应该在
AndroidManifest.xml中定义权限android.permission.MOUNT_UNMOUNT_FILESYSTEMS，这意味着您可以在SDCard上创建文件和删除文件。You should define permission
android.permission.MOUNT_UNMOUNT_FILESYSTEMSinAndroidManifest.xml, it means you can create file and delete file on the SDCard.