小编San*_*ndy的帖子

我正在使用https://github.com/dm77/barcodescanner扫描二维码。但它根本不扫描二维码（handleResult永远不会被调用）。当我将相机聚焦在二维码上时，它不扫描代码。

这是我的活动。

    package education.qrexample;

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.widget.Toast;

import com.google.zxing.Result;

import me.dm7.barcodescanner.zxing.ZXingScannerView;

public class MainActivity extends AppCompatActivity implements ZXingScannerView.ResultHandler{

    private ZXingScannerView mScannerView;
    @Override
    public void onCreate(Bundle state) {
        super.onCreate(state);
        mScannerView = new ZXingScannerView(this);   // Programmatically              initialize the scanner view
        setContentView(mScannerView);
        mScannerView.setResultHandler(this); // Register ourselves as a handler for scan results.
        mScannerView.startCamera();          // Start camera on resume// Set the scanner view as the content view
    }

    @Override
    public void onResume() {
        super.onResume();

    }

    @Override
    public void onPause() …