如图

import android.support.v4.app.ActivityCompat;
import android.support.v4.content.ContextCompat;

代码如下

private void requestPermission(String permission){         if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.M){             if (ContextCompat.checkSelfPermission(BookListActivity.this,                      Manifest.permission.READ_EXTERNAL_STORAGE)                             != PackageManager.PERMISSION_GRANTED) {                              ActivityCompat.requestPermissions(BookListActivity.this,                                     new String[]{Manifest.permission.READ_EXTERNAL_STORAGE},                                     MY_PERMISSIONS_REQUEST_READ_CONTACTS);              }         }     }