Question

当前我正在使用ZXing Barcode Scanner。当我尝试扫描其中包含url的二维码时，它不会加载，并显示ERR_UNKNOWN_URL_SCHEME。

与此同时，我的另一个页面具有其自己的url链接，该链接不是出于意图而加载的。

ERR_UNKNOWN_URL：

这是我的代码：

package com.project.ciisapp.ciis;


import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.webkit.URLUtil;
import android.webkit.WebChromeClient;
import android.webkit.WebResourceRequest;
import android.webkit.WebSettings;
import android.webkit.WebView;

import android.webkit.WebViewClient;
import android.widget.Toast;


 public class scannner extends AppCompatActivity {
 private WebView wvv;



 @Override
 protected void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 setContentView(R.layout.activity_main);

 wvv = (WebView)findViewById(R.id.wvv);
 wvv.setWebChromeClient(new WebChromeClient());
 wvv.setWebViewClient(new WebViewClient(){



 @Override
 public boolean shouldOverrideUrlLoading(WebView view, String url) {
  view.loadUrl(url);

  if (url.startsWith("http") || url.startsWith("https")) {
  return true;
  }else {
   wvv.stopLoading();
   wvv.goBack();
  Toast.makeText(scannner.this, "Unknown Link, unable to handle", 
 Toast.LENGTH_SHORT).show();
}
return false;



   }});

   Intent intent=getIntent();
   String QRurl = getIntent().getExtras().getString("QRurl");
   wvv.loadUrl(QRurl);
  WebSettings webSettings = wvv.getSettings();
  webSettings.setJavaScriptEnabled(true);
  }}

这是我在扫描器中的代码，我只是从一些教程中复制了zxing扫描器

package com.project.ciisapp.ciis;

import android.app.Activity;
import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;

import com.google.zxing.integration.android.IntentIntegrator;
import com.google.zxing.integration.android.IntentResult;

public class ReaderActivity extends AppCompatActivity {
private Button database;
private Button scan_btn;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_reader);
    database=(Button)findViewById(R.id.database);
    scan_btn=(Button)findViewById(R.id.scan_btn);


    database.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
                startActivity(new Intent(ReaderActivity.this,Main2Activity.class));
        }
    });



    final Activity activity=this;
    scan_btn.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            IntentIntegrator integrator = new IntentIntegrator(activity);
            integrator.setDesiredBarcodeFormats(IntentIntegrator.QR_CODE_TYPES);
            integrator.setPrompt("Scan");
            integrator.setCameraId(0);
            integrator.setBeepEnabled(false);
            integrator.setBarcodeImageEnabled(false);
            integrator.initiateScan();
        }
    });
}

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    IntentResult result = IntentIntegrator.parseActivityResult(requestCode, resultCode, data);
    if(result != null){
        if(result.getContents()==null){
            Toast.makeText(this, "You cancelled the scanning", Toast.LENGTH_LONG).show();
        }
        else {


            Intent intent = new Intent(this, scannner.class);
            intent.putExtra("QRurl", String.valueOf(result));
            startActivity(intent);


        }
    }
    else {
        super.onActivityResult(requestCode, resultCode, data);
    }
}

}

Answer 1

如屏幕截图所示，您尝试访问的地址不是有效的URL。当您只想将URL传递给浏览器时，看起来一个包含有关扫描QR码的几条信息的对象正被转换为代表整个对象的字符串。看看从扫描仪取回的物体，只抓住QR码内容。

webview使用zxing从QR代码接收链接

1 个答案: