MyCaptureActivity.java

package ml.puredark.hviewer.ui.activities;

import android.Manifest;
import android.content.pm.PackageManager;
import android.os.Bundle;
import android.support.v4.app.ActivityCompat;
import android.support.v4.content.ContextCompat;
import android.widget.Toast;

import com.journeyapps.barcodescanner.CaptureActivity;

public class MyCaptureActivity extends CaptureActivity {

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        if (ContextCompat.checkSelfPermission(this, Manifest.permission.CAMERA)
                != PackageManager.PERMISSION_GRANTED) {
            ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.CAMERA}, 1);
        }
    }

    @Override
    public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
        doNext(requestCode, grantResults);
    }

    private void doNext(int requestCode, int[] grantResults) {
        if (requestCode == 1) {
            if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                // Permission Granted
            } else {
                // Permission Denied
                Toast.makeText(this, "请在应用管理中打开“相机”访问权限！", Toast.LENGTH_LONG).show();
                finish();
            }
        }
    }
}