App got crashed when tried to open a generator

Question

I tried to build a scanner and generator in 1 app. When I press the generator button, It suddenly crash. I don't have any error or warning in my log.

Here's my generator code:

public class GeneratorActivity extends AppCompatActivity {

EditText text;
Button gen_btn;
ImageView image;
String text2Qr;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_generator);
    text = findViewById(R.id.text);
    gen_btn = findViewById(R.id.gen_btn);
    image = findViewById(R.id.image);
    gen_btn.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            text2Qr = text.getText().toString().trim();
            MultiFormatWriter multiFormatWriter = new MultiFormatWriter();
            try{
                BitMatrix bitMatrix = multiFormatWriter.encode(text2Qr, BarcodeFormat.QR_CODE,200,200);
                BarcodeEncoder barcodeEncoder = new BarcodeEncoder();
                Bitmap bitmap = barcodeEncoder.createBitmap(bitMatrix);
                image.setImageBitmap(bitmap);
            }
            catch (WriterException e){
                e.printStackTrace();
            }
        }
    });
}}

MainActivity code:

public class MainActivity extends AppCompatActivity {

Button gen, scan;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    gen = findViewById(R.id.gen);
    scan = findViewById(R.id.scan);
    gen.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            Intent gIntent = new Intent(MainActivity.this, GeneratorActivity.class);
            startActivity(gIntent);
        }
    });
    scan.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            Intent rIntent = new Intent(MainActivity.this, ReaderActivity.class);
            startActivity(rIntent);
        }
    });
}}

Does anybody know how to fix this? Please help me.

UPDATE

Here's my xml code for the generator:

<EditText
    android:id="@+id/text"
    android:layout_width="0dp"
    android:layout_height="wrap_content"
    android:layout_marginBottom="415dp"
    android:layout_marginTop="50dp"
    android:hint="@string/enter_text_to_generate"
    app:layout_constraintBottom_toBottomOf="parent"
    app:layout_constraintEnd_toEndOf="parent"
    app:layout_constraintStart_toStartOf="parent"
    app:layout_constraintTop_toBottomOf="@+id/view" />

<Button
    android:id="@+id/gen_btn"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_centerHorizontal="true"
    android:layout_marginTop="33dp"
    android:text="@string/generate"
    app:layout_constraintEnd_toEndOf="parent"
    app:layout_constraintStart_toStartOf="parent"
    app:layout_constraintTop_toBottomOf="@+id/text" />

<view
    android:id="@+id/view"
    android:layout_width="0dp"
    android:layout_height="0dp"
    android:layout_marginBottom="48dp"
    android:layout_marginTop="155dp"
    android:background="@android:color/black"
    app:layout_constraintBottom_toTopOf="@+id/text"
    app:layout_constraintEnd_toEndOf="parent"
    app:layout_constraintStart_toStartOf="parent"
    app:layout_constraintTop_toTopOf="parent" />

<LinearLayout
    android:id="@+id/linearLayout"
    android:layout_width="0dp"
    android:layout_height="293dp"
    android:layout_below="@+id/view"
    android:layout_marginEnd="10dp"
    android:layout_marginStart="10dp"
    android:layout_marginTop="188dp"
    app:layout_constraintEnd_toEndOf="parent"
    app:layout_constraintStart_toStartOf="parent"
    app:layout_constraintTop_toTopOf="parent">

    <ImageView
        android:id="@+id/image"
        android:layout_width="348dp"
        android:layout_height="match_parent"
        android:contentDescription="@string/todo" />
</LinearLayout>

I hope this will help my issue :(

UPDATED: This is fix by stupid typo from me ;). Thank you so much for everyone that replied to my question this far. I can't say much how grateful I am. Especially for the guy that I already vote for the right answer. You're truly a hero!

Answer 1

Please don't vote. I know this is not a solution but this will definitely help us in identifying the issue.

This is regarding finding the error in the logcat. May be once Ricardo F. Seikka share the logcat, I can remove this answer.

On Windows (10), this is what I do when the logcat doesn't capture error(what actually happens is the logcat gets cleared when there is an error(only for some errors) and new logcat gets generated hence we cannot see the error in logcat)

@Ricardo F. Seikka (I assume you are using Windows too)

• Launch your app

• before clicking the button run below command in terminal

  "C:\Users\qwerty\AppData\Local\Android\sdk\platform-tools\adb.exe" logcat -c

(instead of qwerty add your name/ look for adb.exe)this will clear the logcat. - after clicking the button, run below command

"C:\Users\Dell\qwerty\Local\Android\sdk\platform-tools\adb.exe" logcat -d > "C:\Users\Dell\qwerty\log.txt"

• then open log.txt, search for fatal, next few lines should give you an idea what is the issue.

If you are using any other OS, then search for adb.exe and try my suggestion.

Answer 2

Ok. I got your problem! (If it isn't a typo in the question...)

At your xml you declared a component named view, when the correct is View with an uppercase:

<View
    android:id="@+id/view"
    android:layout_width="0dp"
    android:layout_height="0dp"
    android:layout_marginBottom="48dp"
    android:layout_marginTop="155dp"
    android:background="@android:color/black"
    app:layout_constraintBottom_toTopOf="@+id/text"
    app:layout_constraintEnd_toEndOf="parent"
    app:layout_constraintStart_toStartOf="parent"
    app:layout_constraintTop_toTopOf="parent" />

Let me know if it solves your problem