Question

在我的Fragment中将扫描的字符串添加到EditText的最佳方法是什么？我尝试使用bundles，但因为我想在现有Fragment中收到字符串，有人说最好搜索其他方式。 Atm我的onClickListener中有Fragment我在scanSerial中调用MainActivity方法。在我的MainActivity中，还有onActivityResult

inputSerial = (EditText) view.findViewById(R.id.editText_serial);
        ImageButton ib = (ImageButton) view.findViewById(R.id.button_scan_serial);
        ib.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                ((MainActivity) getActivity()).scanSerial();
            }
        });

onActivityResult＆amp;我的MainActivity

中的scanSerial

public void onActivityResult(int requestCode, int resultCode, Intent intent) {
    super.onActivityResult(requestCode, resultCode, intent);

        if (resultCode == RESULT_OK) {
            String scanContent = intent.getStringExtra("SCAN_RESULT");
            String scanFormat = intent.getStringExtra("SCAN_RESULT_FORMAT");

            switch (requestCode){
                case (10):{
                    String[] Split = scanContent.split("\\s");
                    String product = Split[0];
                    String label = Split[1];
                    String serial = Split[2];


                    mydb.insertData(product, label, serial, mac, daaid, bill);

                    Fragment fragment;
                    FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
                    fragment = new ListViewFragment();
                    ft.replace(R.id.container, fragment);
                    ft.commitAllowingStateLoss();
                    break;
                }
                case (11):{

                    scannedResult = scanContent;

                    break;
                }
            }
        } else if (resultCode == RESULT_CANCELED) {

            Log.d("TEST", "result_canceled");
        }

}

public void scanSerial(){
    Intent intent = new Intent("com.google.zxing.client.android.SCAN");
    intent.putExtra("SCAN_FORMATS", "CODE_39,CODE_93,CODE_128,DATA_MATRIX,ITF,CODABAR,EAN_13,EAN_8,UPC_A");
    startActivityForResult(intent, 11);
}

我知道我应该在扫描序列后收到字符串，但我不知道怎么做。如果onActivityResult方法设置了片段中的scanningResult字符串，我可以听吗？

Answer 1

如果您需要扫描条形码而您正在使用zxing应用程序，最好使用zxing的IntentIntegrator。

在您的scanSerial中

会有

IntentIntegrator integrator = new IntentIntegrator(getActivity());
integrator.initiateScan();

然后在MainActivity中的onActivityResult中创建新的Fragment并将结果传递给它

ft.commitAllowingStateLoss();
ft.onActivityResult(requestCode, resultCode, data);

或所有片段（如果您需要

）

for (Fragment fragment : getSupportFragmentManager().getFragments()) {
        fragment.onActivityResult(requestCode, resultCode, data);
    }

然后使用Fragment code

中的EditText进行操作

IntentResult scanResult = IntentIntegrator.parseActivityResult(requestCode, resultCode, data);
    if (scanResult != null) {
        String scannedString = scanResult.getContents();
        ...
    }

Answer 2

只需调用您的扫描方法并定义＆＃34; your_intent_code。

public void scan() {
    Intent intent = new Intent("com.google.zxing.client.android.SCAN");
    intent.putExtra("SCAN_FORMATS", "CODE_39,CODE_93,CODE_128,DATA_MATRIX,ITF,CODABAR,EAN_13,EAN_8,UPC_A");
    startActivityForResult(intent, "your_intent_code);
}

依赖于意图代码，您可以在onActivityResult

中定义操作

public void onActivityResult(int requestCode, int resultCode, Intent intent) {
        super.onActivityResult(requestCode, resultCode, intent);

            if (resultCode == RESULT_OK) {
                String scanContent = intent.getStringExtra("SCAN_RESULT");

                switch (requestCode){
                    case (your_intent_code):{
                        // DO SOMESTHING
                    }
                }
            } else if (resultCode == RESULT_CANCELED){

            }
    }

Answer 3

我使用此代码扫描插入我的序列号。不完美，但目前它的工作原理：

    inputSerial = (EditText) view.findViewById(R.id.editText_serial);
    ImageButton ib = (ImageButton) view.findViewById(R.id.button_scan_serial);
    ib.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            ((MainActivity) getActivity()).scanSerial();
        }
    });

    if ((((MainActivity) getActivity()).scannedResult) != null );{
        inputSerial.setText(((MainActivity) getActivity()).scannedResult);
    }

如何在MainActivity中扫描后将字符串发送到Fragment中的EditText

3 个答案: