Question

我正在使用zxing android整理QR码。

要在onCreateView的HomeFragment中初始化扫描对象：

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

要获取扫描仪结果：

// 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);
}

但是，我得到了：

错误：HomeFragment中的onActivityResult（int，int，Intent）无法在Fragment中尝试覆盖onActivityResult（int，int，Intent）尝试分配较弱的访问权限；是公开的

将其从“受保护”更改为公共后，在HomeFragment中未调用onActivityResult。

Answer 1

尝试

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

然后在onActivityResult

@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();
    }
}

您可以检查this回购

Zxing QR扫描仪onActivityResult未在片段中调用

1 个答案: