java - eclipse 提示 ContextCompat中不包含checkSelfPermission方法

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);

            }
        }
    }