开外部存储访问权限

MainActivity.java

private static final int REQUEST_EXTERNAL_STORAGE = 1;

private static String[] PERMISSIONS_STORAGE = {

Manifest.permission.READ_EXTERNAL_STORAGE,

Manifest.permission.WRITE_EXTERNAL_STORAGE };

int permission = ActivityCompat.checkSelfPermission(this, Manifest.permission.WRITE_EXTERNAL_STORAGE);

if (permission != PackageManager.PERMISSION_GRANTED) ActivityCompat.requestPermissions(

                this,

                PERMISSIONS_STORAGE,//需要请求的所有权限，这是个数组String[]

                REQUEST_EXTERNAL_STORAGE//请求码

        );

 

AndroidManifest.xml   

   

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

xx    uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>