Zxing QR scanner onActivityResult未在片段中调用

Question

我正在使用zxing android来扫描二维码。

在onCreateView:中初始化HomeFragment中的扫描对象

//intializing scan object
//qrScan = new IntentIntegrator(this.getActivity()); // this is for activity
qrScan = IntentIntegrator.forSupportFragment(this); // this is for fragment

获取扫描仪结果：

// Get the results:
@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, "Cancelled", Toast.LENGTH_LONG).show();
} else {
Toast.makeText(this, "Scanned: " + result.getContents(), Toast.LENGTH_LONG).show();
}
} else {
super.onActivityResult(requestCode, resultCode, data);
}

然而，我得到了：

错误：HomeFragment中的onActivityResult(int，int，Intent(不能试图重写Fragment中的onActivityResult(int，int，Intent(分配较弱的访问权限；是公共

将其从"protected"更改为public后，HomeFragment中未调用onActivityResult。

Answer 1

试试这个

IntentIntegrator scanIntegrator = IntentIntegrator.forSupportFragment(YourFragmentClass.this);
scanIntegrator.setPrompt("Scan");
scanIntegrator.setBeepEnabled(true);
scanIntegrator.setBarcodeImageEnabled(true);
scanIntegrator.initiateScan();

然后在onActivityResult中

@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
IntentResult scanningResult = IntentIntegrator.parseActivityResult(requestCode, resultCode, data);
if (scanningResult != null) {
if (scanningResult.getContents() != null) {
scanContent = scanningResult.getContents().toString();
scanFormat = scanningResult.getFormatName().toString();
}
Toast.makeText(getActivity(), scanContent + "   type:" + scanFormat, Toast.LENGTH_SHORT).show();
textView.setText(scanContent + "    type:" + scanFormat);
} else {
Toast.makeText(getActivity(), "Nothing scanned", Toast.LENGTH_SHORT).show();
}
}

您可以查看此回购