CODEWITHSUNDEEP
javaandroidandroid-activitylogcatandroid-logcat
Selim Ajimi
Selim Ajimi

Reputation: 344

Errors during the execution of android application

I am about to create my first android app :This is a screenshot of how the app looks

So The main idea of this app is to generate random numbers in the two buttons and the user guess which number is bigger if he guessed it right:

This is the XML layout 

<TextView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_below="@id/app_name"
    android:gravity="center_horizontal"
    android:text="Press the button of the larger Number.if you get it right you will earn point !if you get it wrong you'll lose a point"
    android:textSize="16sp" />

<LinearLayout
    android:id="@+id/linearLayout"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_alignParentEnd="true"
    android:layout_alignParentRight="true"
    android:layout_centerVertical="true"
    android:orientation="horizontal">

    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <Button
            android:id="@+id/left_button_number"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="0"
            android:textStyle="bold" />

        <Button
            android:id="@+id/right_button_number"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignParentEnd="true"
            android:layout_alignParentRight="true"
            android:layout_alignParentTop="true"
            android:text="0"
            android:textStyle="bold" />
    </RelativeLayout>

</LinearLayout>

<TextView
    android:id="@+id/textView"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentBottom="true"
    android:layout_centerHorizontal="true"
    android:layout_gravity="top"
    android:layout_marginBottom="57dp"
    android:gravity="center_horizontal"
    android:text="points : "
    android:textStyle="italic" />

<TextView
    android:id="@+id/score_text_view"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignTop="@+id/textView"
    android:layout_toEndOf="@+id/textView"
    android:layout_toRightOf="@+id/textView"
    android:text="0" />

<Button
    android:id="@+id/reset_button"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_below="@+id/linearLayout"
    android:layout_centerHorizontal="true"
    android:text="Reset" />

This is the Java Code

public class MainActivity extends AppCompatActivity {
int leftNumber;
int rightNumber;
private OnClickListener ButtonClickListener = new OnClickListener() {
    public void onClick(View v) {
        switch (v.getId()) {
            case R.id.left_button_number:
                if (rightNumber < leftNumber)
                    updateTheScore(1);
                else
                    updateTheScore(-1);
                break;
            case R.id.right_button_number:
                if (rightNumber > leftNumber)
                    updateTheScore(1);
                else
                    updateTheScore(-1);

                break;
            case R.id.reset_button:
                resetTheScore();
                break;
            default:
                break;
        }

    }
};

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
    setSupportActionBar(toolbar);

    numberGenerator();
    Button rightButton = (Button) findViewById(R.id.right_button_number);
    Button leftButton = (Button) findViewById(R.id.left_button_number);
    Button resetButton = (Button) findViewById(R.id.reset_button);
    rightButton.setOnClickListener(ButtonClickListener);
    leftButton.setOnClickListener(ButtonClickListener);
    resetButton.setOnClickListener(ButtonClickListener);


    FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
    fab.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
                    .setAction("Action", null).show();
        }
    });
}

public void updateTheScore(int n) {
    TextView scoreView = (TextView) findViewById(R.id.score_text_view);
    int score = Integer.parseInt(scoreView.getText().toString());
    score += n;
    scoreView.setText(score);
    numberGenerator();
}

public void resetTheScore() {
    TextView scoreView = (TextView) findViewById(R.id.score_text_view);
    scoreView.setText(0);
    numberGenerator();
}

public void numberGenerator() {
    int min = 1;
    int max = 100;
    Random r = new Random();
    leftNumber = r.nextInt(max - min + 1) + min;
    rightNumber = r.nextInt(max - min + 1) + min;
    displayMessageOnButton(leftNumber, rightNumber);
}

public void displayMessageOnButton(int left, int right) {
    Button rightButton = (Button) findViewById(R.id.right_button_number);
    Button leftButton = (Button) findViewById(R.id.left_button_number);
    rightButton.setText(right);
    leftButton.setText(left);
}

This is the logcat

 String resource ID #0x4a
                                                                         at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2194)
                                                                         at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2229)
                                                                         at android.app.ActivityThread.access$600(ActivityThread.java:139)
                                                                         at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1261)
                                                                         at android.os.Handler.dispatchMessage(Handler.java:99)
                                                                         at android.os.Looper.loop(Looper.java:154)
                                                                         at android.app.ActivityThread.main(ActivityThread.java:4945)
                                                                         at java.lang.reflect.Method.invokeNative(Native Method)
                                                                         at java.lang.reflect.Method.invoke(Method.java:511)
                                                                         at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
                                                                         at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
                                                                         at dalvik.system.NativeStart.main(Native Method)
                                                                      Caused by: android.content.res.Resources$NotFoundException: String resource ID #0x4a
                                                                         at android.content.res.Resources.getText(Resources.java:266)
                                                                         at android.widget.TextView.setText(TextView.java:3627)
                                                                         at com.example.android.big.MainActivity.displayMessageOnButton(MainActivity.java:87)
                                                                         at com.example.android.big.MainActivity.numberGenerator(MainActivity.java:81)
                                                                         at com.example.android.big.MainActivity.onCreate(MainActivity.java:39)
                                                                         at android.app.Activity.performCreate(Activity.java:4531)
                                                                         at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1071)
                                                                         at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2150)
                                                                         at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2229) 
                                                                         at android.app.ActivityThread.access$600(ActivityThread.java:139) 
                                                                         at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1261) 
                                                                         at android.os.Handler.dispatchMessage(Handler.java:99) 
                                                                         at android.os.Looper.loop(Looper.java:154) 
                                                                         at android.app.ActivityThread.main(ActivityThread.java:4945) 
                                                                         at java.lang.reflect.Method.invokeNative(Native Method) 
                                                                         at java.lang.reflect.Method.invoke(Method.java:511) 
                                                                         at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784) 
                                                                         at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551) 
                                                                         at dalvik.system.NativeStart.main(Native Method) 

Upvotes: 1

Views: 53

Answers (2)

Ajinkya
Ajinkya

Reputation: 1039

public void numberGenerator() {
    int min = 1;
    int max = 100;
    Random r = new Random();
    leftNumber = r.nextInt((max - min) + 1) + min;
    rightNumber = r.nextInt((max - min) + 1) + min;
    displayMessageOnButton(leftNumber, rightNumber);
}

Can not set Integer to text 

public void displayMessageOnButton(int left, int right) {
    Button rightButton = (Button) findViewById(R.id.right_button_number);
    Button leftButton = (Button) findViewById(R.id.left_button_number);
    rightButton.setText(right+"");
    leftButton.setText(left+"");

}

Upvotes: 4

J&#246;rn Buitink
J&#246;rn Buitink

Reputation: 2916

public void updateTheScore(int n) {
    TextView scoreView = (TextView) findViewById(R.id.score_text_view);
    int score = Integer.parseInt(scoreView.getText().toString());
    score += n;
    scoreView.setText(score); // <---- this isn't working
    numberGenerator();
}

You passed an int as a parameter to your scroteView.setText(); . In this case, int is interpreted as a ressource ID (which is obvously not what you wanted). A simple

scoreView.setText(score + "");

(implicit String cast) will fix it.

Upvotes: 4

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