我需要构建一个可以识别二维码的应用程序,而不强制用户安装其他应用程序。将来,我还需要在识别代码之前对扫描的图像进行操作(我扫描的代码会有反色)。
尝试遵循以下链接中的提示和教程:
Integrating the ZXing library directly into my Android application
Embedding ZXing in android app
http://karanbalkar.com/2013/12/tutorial-65-implement-barcode-scanner-using-zxing-in-android/
创建一些基本代码并运行应用程序后,我单击“扫描”按钮并收到错误:没有找到处理 Intent { act=com.google.zxing.client.android.SCAN (has extras) } 的 Activity
我做了什么:
创建新项目
将 core-3.2.1.jar 复制到 libs/
添加 Intent 调用和结果处理
我添加的 Intent/结果代码:
private Button scan;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
scan= (Button)findViewById(R.id.btnScan);
scan.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
Intent intent = new Intent("com.google.zxing.client.android.SCAN");
intent.putExtra("SCAN_MODE", "QR_CODE_MODE");
startActivityForResult(intent, 0);
}
});
}
public void onActivityResult(int requestCode, int resultCode, Intent intent) {
if (requestCode == 0) {
if (resultCode == RESULT_OK) {
String contents = intent.getStringExtra("SCAN_RESULT");
String format = intent.getStringExtra("SCAN_RESULT_FORMAT");
// Handle successful scan
MultiFormatWriter writer = new MultiFormatWriter();
} else if (resultCode == RESULT_CANCELED) {
// Handle cancel
Log.i("App","Scan unsuccessful");
}
}
}
如何开始 Intent ?我做错了什么?
最佳答案
您应该像这样启动扫描:
@Override
public void onClick(View v) {
IntentIntegrator integrator = new IntentIntegrator(MainActivity.this);
integrator.setDesiredBarcodeFormats(IntentIntegrator.ALL_CODE_TYPES);
//in case you want to customize a bit.
integrator.setPrompt("Scan a QR/Bar code");
integrator.setCameraId(0);
integrator.setBeepEnabled(false);
integrator.initiateScan();
}
收到如下结果:
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
switch (requestCode) {
case IntentIntegrator.REQUEST_CODE: {
if (resultCode != RESULT_CANCELED) {
IntentResult scanResult = IntentIntegrator.parseActivityResult(requestCode, resultCode, data);
String data = scanResult.getContents();
// use this data
} else {
// error
}
break;
}
}
}
编辑1:
将其作为依赖项
添加到应用的build.gradle
中:
compile 'com.journeyapps:zxing-android-embedded:3.0.2@aar'
compile 'com.google.zxing:core:3.2.0'
关于java - 将 ZXing 集成到我的应用程序中,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/36334764/