Question

我开发了一个用于条形码扫描程序的Android应用程序，现在我想对检索到的扫描结果进行进一步处理，例如加载URL或在第三方数据源中查找数据。所以我该怎么做我正在使用android studio开发应用程序。这是我的MAinActivity代码：

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v7.app.ActionBarActivity;
import android.util.Log;
import com.google.zxing.integration.android.IntentIntegrator;
import com.google.zxing.integration.android.IntentResult;
import android.content.Intent;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;
public class MainActivity extends AppCompatActivity implements  OnClickListener {
private Button scanBtn;
private TextView formatTxt, contentTxt;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    scanBtn = (Button) findViewById(R.id.scan_button);
    formatTxt = (TextView) findViewById(R.id.scan_format);
    contentTxt = (TextView) findViewById(R.id.scan_content);
    scanBtn.setOnClickListener(this);
}

public void onClick(View v) {
    if (v.getId() == R.id.scan_button) {
        IntentIntegrator scanIntegrator = new IntentIntegrator(this);
        scanIntegrator.initiateScan();
    }
}

public void onActivityResult(int requestCode, int resultCode, Intent intent) {
    IntentResult scanningResult = IntentIntegrator.parseActivityResult(requestCode, resultCode, intent);
    if (scanningResult != null) {
        String scanContent = scanningResult.getContents();
        String scanFormat = scanningResult.getFormatName();
        formatTxt.setText("FORMAT: " + scanFormat);
        contentTxt.setText("CONTENT: " + scanContent);
    } else {
        Toast toast = Toast.makeText(getApplicationContext(),
                "No scan data received!", Toast.LENGTH_SHORT);
        toast.show();
    }
}

}

我正在使用zxing库。

这是我编辑的代码：

public void onActivityResult(int requestCode, int resultCode, Intent intent) {
    IntentResult scanningResult = IntentIntegrator.parseActivityResult(requestCode, resultCode, intent);
    if (scanningResult != null) {
        String scanContent = scanningResult.getContents();
        String scanFormat = scanningResult.getFormatName();
        formatTxt.setText("FORMAT: " + scanFormat);
        contentTxt.setText("CONTENT: " + scanContent);
    URL url;
        HttpURLConnection urlConnection = null;
        try {
            url = new URL("url");

            urlConnection = (HttpURLConnection) url
                    .openConnection();

            InputStream in = urlConnection.getInputStream();

            InputStreamReader isw = new InputStreamReader(in);

            int data = isw.read();
            while (data != -1) {
                char current = (char) data;
                data = isw.read();
                System.out.print(current);
            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            if (urlConnection != null) {
                urlConnection.disconnect();
            }
        }
    } else {
        Toast toast = Toast.makeText(getApplicationContext(),
                "No scan data received!", Toast.LENGTH_SHORT);
        toast.show();
    }
}

}

这是正确的方法吗？

Answer 1

使用Activity启动扫描仪startActivityForResult并覆盖onActivityResult以处理检索到的数据。

查看示例here。

Answer 2

您必须启动新活动才能打开您的网址。

private void openUrl(String url) {
    Intent i = new Intent(Intent.ACTION_VIEW); 
    i.setData(Uri.parse(url)); 
    startActivity(i);
}

在onActivityResult方法中调用此方法。可能scanContent变量是您的网址。

如何处理检索到的扫描结果，如加载URL？

2 个答案: