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Android

Posted by roolip roolip
roolip roolip
299 Points

SDK update lead to errors

I successfully completed running my app until i updated my SDK. I started receiving errors in my source code that weren't there before, such as:

'cannot return a value from a method with void result type'; symbols that are expected ')' or ';' unexpected token; 'cannot resolve symbol item' - which i think i didn't create, rather it came automatically upon the creation of the project; 'variable listener is accessed from within inner class, needs to be declared final' 'annotations are not allowed here' - red error line beneath the override, which did came automatically.

I tried looking online and didn't find the answer. one advice was to delete the app/build and make gradle rebuild it. but the rebuild failed due to: 'error identifier expected'; 'symbol ; is expected'; 'error reached end of file while parsing'; 'execution failed for task app:compileDebugjava'. This problem is delaying my progress in treehouse.

Thanks in advance.

2 Answers

william parrish
william parrish
13,774 Points
william parrish
william parrish
13,774 Points

Everything you just posted leans towards you being short a } somewhere. Also, check your methods and see if you are actually trying to return a value in a method marked with void, you cannot do that.

If you post your code here, i'll fix it for you.

roolip roolip
roolip roolip
299 Points

package com.example.FunFactsi.funfacts;

import android.app.Activity; import android.os.Bundle; import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.widget.Button; import android.widget.TextView;

import java.util.Random;

public class FunFactsActivity extends Activity {

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_fun_facts);
    final TextView factLabel = (TextView) findViewById(R.id.factTextView);
    Button showFactButton = (Button) findViewById(R.id.showFactButton);
    View.OnClickListener listener = new View.OnClickListener() {
       @Override
       public void onClick(View view) {

           String fact = "";

           Random randomGenerator  = new Random(); // constructing a new random generator
          int randomNumber = randomGenerator.nextInt(3);
          if (randomNumber == 3) {
              factLabel.setText("works");
           }else{
              factLabel.setText("doesn't");
          }

   };
    showFactButton.setOnClickListener(listener);
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    getMenuInflater().inflate(R.menu.fun_facts, menu);
    return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    int id = item.getItemId();
    if (id == R.id.action_settings) {
        return true;
    }
    return super.onOptionsItemSelected(item);
}

}

william parrish
william parrish
13,774 Points
william parrish
william parrish
13,774 Points

Between these two lines

        showFactButton.setOnClickListener(listener);

}

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {

Add another closing bracket, right after the first one. So it should look like this

        showFactButton.setOnClickListener(listener);

}

}

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {

Essentially, add another '}' between showFactButton.setOnClickListener
and onCreateOptionsMenu.