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我是安卓新手。我正在尝试使用 zbar 读取条形码。我正在使用DushyanthMaguluru/ZBarScanner/ZBarScannerDemo 进行测试。

问题是应用程序正在打开，当我单击扫描按钮时，它只是打开相机，检测条形码的红线没有出现。我不知道我哪里出错了。

我的 MAinactivity.Java 代码是

package com.example.zbartest;

import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.text.TextUtils;
import android.view.View;
import android.widget.Toast;
import android.widget.TextView;
import com.dm.zbar.android.scanner.ZBarConstants;
import com.dm.zbar.android.scanner.ZBarScannerActivity;
import net.sourceforge.zbar.Symbol;
public class MainActivity extends Activity {

private static final int ZBAR_SCANNER_REQUEST = 0;
private static final int ZBAR_QR_SCANNER_REQUEST = 1;

private TextView formatTxt, contentTxt;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    formatTxt = (TextView)findViewById(R.id.scan_format);
    contentTxt = (TextView)findViewById(R.id.scan_content);
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.main, menu);
    return true;
}

public void launchScanner(View v) {
    if (isCameraAvailable()) {
        Intent intent = new Intent(this, ZBarScannerActivity.class);
        startActivityForResult(intent, ZBAR_SCANNER_REQUEST);
    } else {
        Toast.makeText(this, "Rear Facing Camera Unavailable", Toast.LENGTH_SHORT).show();
    }
}

public void launchQRScanner(View v) {
    if (isCameraAvailable()) {
        Intent intent = new Intent(this, ZBarScannerActivity.class);
        intent.putExtra(ZBarConstants.SCAN_MODES, new int[]{Symbol.QRCODE});
        startActivityForResult(intent, ZBAR_SCANNER_REQUEST);
    } else {
        Toast.makeText(this, "Rear Facing Camera Unavailable", Toast.LENGTH_SHORT).show();
    }
}

public boolean isCameraAvailable() {
    PackageManager pm = getPackageManager();
    return pm.hasSystemFeature(PackageManager.FEATURE_CAMERA);
}

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    switch (requestCode) {
        case ZBAR_SCANNER_REQUEST:
        case ZBAR_QR_SCANNER_REQUEST:
            if (resultCode == RESULT_OK) {
                Toast.makeText(this, "Scan Result = " + data.getStringExtra(ZBarConstants.SCAN_RESULT), Toast.LENGTH_SHORT).show();                         
                String scanFormat = data.getStringExtra("SCAN_RESULT");
                String scanContent = data.getStringExtra("SCAN_RESULT_FORMAT");
                formatTxt.setText("FORMAT: " + scanFormat);
                contentTxt.setText("CONTENT: " + scanContent);
            } else if(resultCode == RESULT_CANCELED && data != null) {
                String error = data.getStringExtra(ZBarConstants.ERROR_INFO);
                if(!TextUtils.isEmpty(error)) {
                    Toast.makeText(this, error, Toast.LENGTH_SHORT).show();
                }
            }
            break;
    }
}
}

我在项目的 src 文件夹中添加了 ZbarScannerActivity、CameraPreview、ZbarConstatnts java 文件，并将 ZbarScannerlibrary 文件添加到 libs 文件夹中。我刚刚从示例中复制了三个 ZbarScannerActivity、CameraPreview、ZbarConstatnts 文件并粘贴到我的项目中。

请帮助

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1 回答 1

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也许您需要清理和重建项目。

再试一次

于 2014-02-19T23:26:59.663 回答