创建新文件时权限被拒绝异常

Question

i want to create new file iam using this code

try { 
            File file = new File(Environment.getExternalStorageDirectory() + File.separator + "Contacts.vcf");
            file.createNewFile();

         } catch (IOException ioe) 
          {ioe.printStackTrace();}

and using this permission

<permission android:name="android.permission.MOUNT_FORMAT_FILESYSTEMS" ></permission>

but it keeps givinh me exeption that says Permission denied

Answer 1

您需要在清单文件中使用此权限

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

Answer 2

当您在External Storage(SD CARD) or Internal Storage写入任何文件时，必须在清单文件中添加权限...

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

Answer 3

将此权限添加到清单文件中

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

Answer 4

Give WRITE_EXTERNAL_STORAGE permission to your AndroidManifest file as shown below:

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
.........
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
</manifest>