set text edittext

Question

I'm working on a QR scanner app. After a succesfull scan the scanned info goes into the alert box. From there, I need the info to go to an EditText field or skip the entire alert dialog. The result which has to go to the EditText is in the function below.

public class MainActivity extends Activity implements ZXingScannerView.ResultHandler {
private ZXingScannerView mScannerView;


EditText editText;
@SuppressLint("CutPasteId")
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    editText = findViewById(R.id.editText4);


    EditText delete2;
    Button button3;



    button3 = findViewById(R.id.button3);
    delete2 = findViewById(R.id.editText2);

    final EditText finalEdittext = delete2;
    button3.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View v) {
            //Clear EditText
            finalEdittext.getText().clear();

        }
    });

    EditText delete4;
    Button button4;

    delete4 = findViewById(R.id.editText4);
    button4 = findViewById(R.id.button4);

    final EditText finalEdittext1 = delete4;
    button4.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View v) {
            //Clear EditText
            finalEdittext1.getText().clear();

        }
    });
}


public void onClick(View v){
    mScannerView = new ZXingScannerView(this);
    setContentView(mScannerView);
    mScannerView.setResultHandler(this);
    mScannerView.startCamera();


}

@Override
protected void onPause() {
    super.onPause();
    mScannerView.stopCamera();

}



@Override
public void handleResult(Result result) {
    //handle result
    Log.v("handleResult", result.getText());


    //editText.setText(result.toString());
   // editText.invalidate();
    mScannerView.stopCamera(); //setContentView(R.layout.activity_main);
    //resume scanning
    //mScannerView.resumeCameraPreview(this);
    updateScannerData(1,result.getText());



}



public void updateScannerData(int scanType, String scannedCode){
   editText.setText(scannedCode);
   //editText.invalidate();
   //editText.requestLayout();

    //finish();
    //startActivity(getIntent());
    this.recreate();


    }

}

I only use one main activity and this is the XML of the EditText where the result has to go.

<EditText
    android:id="@+id/editText2"
    android:layout_width="match_parent"
    android:layout_height="61dp"
    android:layout_alignParentStart="true"
    android:layout_alignParentTop="true"
    android:layout_marginTop="197dp"
    android:ems="10"
    android:hint="@string/scan_order"
    android:inputType="textPersonName"
    android:visibility="visible"
    tools:backgroundTint="@android:color/holo_red_light" />

Any help is greatly appreciated. Thanks in advance.

Possible duplicate of [How To Set Text In An EditText](https://stackoverflow.com/questions/4590957/how-to-set-text-in-an-edittext) — Óscar, Jul 26 '18 at 08:53

Sahil · Accepted Answer · 2018-07-26T12:53:06.410

0

There can be more then one approach here, you can :

Edittext edt = (EditText)findViewById(R.id.viewid);
edt.setText(result.getText());

or if you need to update this text view frequently multiple times make method inside your main activity updateScannerEditText(String value); and call it from your fragment.

In case you have handleResult() inside you main activity itself simply create method inside your activity :

@Override  // move your setContentView() method inside activity oncreate()
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
   setContentView(R.layout.activity_main);
}

public void handleResult(Result result) {
   //handle result
Log.v("handleResult", result.getText());
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle("Scan Result");
builder.setMessage(result.getText());
AlertDialog alertDialog = builder.create();
alertDialog.show();

mScannerView.stopCamera();
updateScannerData(1,result.gettext()); 


//resume scanning
mScannerView.resumeCameraPreview(this);

}

Method implementation :

private void updateScannerData(int scanType, String scannedCode){
edt.setText(scannedCode);//edt is the editTextView that you have declared in you xml.
}

Hope it helps.

edited Jul 26 '18 at 12:53

answered Jul 26 '18 at 08:43

Sahil

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oh great, pls thank me by accepting the answer. might help others. – Sahil Jul 26 '18 at 14:01
it means the editText on which you are trying to set the text is null, which means it has not been initialised like > (EditText)findViewById(R.id.viewid); – Sahil Jul 26 '18 at 14:33
no , unfortunately not the error nullpointer is gone tho , but nothing is set in edittext – Maarten Vaartjes Aug 01 '18 at 05:31
okay, Step1 : make a global variable Edittext edt; Step2: add followind line in oncreate() below setContentView(R.layout.activity_main); edt = (EditText)findViewById(R.id.viewid); where R.id.viewid is the id name defined in xml for edt. – Sahil Aug 01 '18 at 05:52
check value of result.getText(); – Sahil Aug 01 '18 at 07:28
i think your code is different from what you have posted in question. post exact code here. – Sahil Aug 01 '18 at 09:33
yes im still working on it so it keeps changing , ill edit to current code – Maarten Vaartjes Aug 01 '18 at 09:39
i find a lot of people with kinda the same issue , i believe it is a bug in the setText() ,but who am i ? lol – Maarten Vaartjes Aug 01 '18 at 09:42
thats highly unlikely. – Sahil Aug 01 '18 at 09:58
yes , but i cant find my solution , could i be something with ui refresh ? – Maarten Vaartjes Aug 01 '18 at 10:06
sahil , i discovered that if i put editText.setText("could be anything") below content view , it displays the text , it's some thing , but still dont know why my code doesn't place it in editText – Maarten Vaartjes Aug 01 '18 at 13:19
simply means you are not getting value at result.getText() debug that. – Sahil Aug 03 '18 at 07:03
how do you do that in android studio – Maarten Vaartjes Aug 06 '18 at 07:49
i was looking into watches atm , but thank you , you either dont see the fix dont you ? – Maarten Vaartjes Aug 06 '18 at 08:08

score 0 · Answer 2 · answered Jul 26 '18 at 10:06

So if i've understood right you're trying to scan a QR Code then you're setting it to an EditText2 and then you're scanning again a product and trying to set it in EditText4.

So just try to make somethink like this:

public void handleResult(Result result) {
    //handle result
    Log.v("handleResult", result.getText());

    if(edittext2.getText().equals("")){
    edittext2.setText(result.getText());
    }else{
     edittext4.setText(result.getText())
      }

    mScannerView.stopCamera(); setContentView(R.layout.activity_main);
    //resume scanning
    mScannerView.resumeCameraPreview(this);

}

set text edittext

2 Answers2