Zxing 扫描仪应用程序，如何将结果显示为是或否

Question

在Android Studio上使用zxing，具有空活动和4.4 KitKat。我想将结果显示为是或否。我想引用带有 UPC 代码的谷歌表格。如果 UPC 已在电子表格中，则显示"是"，或者如果 UPC 不在电子表格中，则显示"否"。我可以在 MainActivity java 代码中使用"If， Else"，仅使用 google 工作表上的 UPC 列吗？

@Override
        protected void onActivityResult ( int requestCode, int resultCode, Intent data){
            IntentResult result = IntentIntegrator.parseActivityResult(requestCode, resultCode, data);
            if (result != null) {
                if (result.getContents() == null) {
                    Log.d("MainActivity", "Cancelled scan");
                    Toast.makeText(this, "Cancelled", Toast.LENGTH_LONG).show();
                } else {
                    Log.d("MainActivity", "Scanned");
                    Toast.makeText(this, "Scanned: " + result.getContents(), Toast.LENGTH_LONG).show();
                }
            } else {
                super.onActivityResult(requestCode, resultCode, data);

我想根据扫描的条形码是否已在电子表格中将此代码显示为"是"或"否"。我的问题是如何让电子表格与扫描仪通信，或者可以在布尔值中复制电子表格中的所有条形码？

Set<String> getStringSet (String key, 
            Set<String> defValues)
makeText(Context context, int resId, int duration)
protected void onActivityResult ( int requestCode, int resultCode, Intent data){
            IntentResult result = IntentIntegrator.parseActivityResult(requestCode, resultCode, data);
            if (result != null) {
                if (result.getContents() == null) {
                    Log.d("MainActivity", "Cancelled scan");
                    Toast.makeText(this, "Cancelled", Toast.LENGTH_LONG).show();
                } else {
                    Log.d("MainActivity", "Scanned");
                    Toast.makeText(this, "Scanned: " + result.getContents(), Toast.LENGTH_LONG).show();
                }

所以以上是我从搜索中得出的。使用共享首选项来存储我的数据(1000 UPC(是否可行，使用 ZXING 进行解析以及 IF ELSE 检查代码，最后 TOAST 根据我的结果是否位于共享首选项中显示"是"或"否"？

public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    Button button = this.findViewById(R.id.button);
    final Activity activity = this;
    button.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            IntentIntegrator integrator = new IntentIntegrator(activity);
            integrator.setDesiredBarcodeFormats(IntentIntegrator.ALL_CODE_TYPES);
            integrator.setPrompt("Scan");
            integrator.setCameraId(0);
            integrator.setBeepEnabled(false);
            integrator.setBarcodeImageEnabled(false);
            integrator.initiateScan();
        }
    });
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    IntentResult result = IntentIntegrator.parseActivityResult(requestCode, resultCode, data);
    if (result != null) {
        if (result.getContents() == null) {
            Log.d("MainActivity", "Cancelled scan");
            Toast.makeText(this, "Cancelled", Toast.LENGTH_LONG).show();
        } else {
            Log.d("MainActivity", "Scanned");
            Toast.makeText(this, "Scanned: " + result.getContents(), Toast.LENGTH_LONG).show();
        }
    } else {
        super.onActivityResult(requestCode, resultCode, data);
    }
}
public void scanCode(View view) {
}
public class myWebView extends MainActivity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        WebView webview = new WebView(this);
        setContentView(webview);

        WebView myWebView = findViewById(R.id.myWebView);

        myWebView.setWebViewClient(new MyWebViewClient());
        WebSettings webSettings = myWebView.getSettings();
        webSettings.setJavaScriptEnabled(true);
        webview.loadUrl("https://google.com/");
    }

    private class MyWebViewClient extends WebViewClient {
        @Override
        public boolean shouldOverrideUrlLoading(WebView view, String url) {

            Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
            startActivity(intent);
            return true;
        }
    }
}

}

Answer 1

为了隔离代码，您需要将SacnActivity创建为一个单独的活动，该活动扩展了Activity并暗示ZXingScannerView.ResultHandler并从MainActivity调用，并在onActivityResult((中回调Mainactivity。

主活动

public class MainActivity extends Activity{

    @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) {
                startActivityForResult(new Intent(MainActivity.this,SacnActivity .class),1);
            }
        });

    }
  @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        if (requestCode == 1) {
            if(resultCode == Activity.RESULT_OK){
                String result=data.getStringExtra("result");
                Log.d("result================>",""+result);
                try {
                    //processData(result);
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
            if (resultCode == Activity.RESULT_CANCELED) {