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Android Build a Simple Android App Basic Android Programming Making a Button Do Something

zarah hafeez
zarah hafeez
317 Points
Posted by zarah hafeez
zarah hafeez
317 Points

Getting error in my code, even I'm following this tutorial.

package com.example.i7.myfunfactproject;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;

public class FunFactActivity extends AppCompatActivity {
private TextView mFunFactView;
    private Button mShowFactButton;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_fun_fact);

        mFunFactView = (TextView) findViewById(R.id.FunFactView);
        mShowFactButton = (Button) findViewById(R.id.ShowFactButton);

        View.OnClickListener Listner = new View.OnClickListener(){

            @Override
            public void onClick(View v) {

            }
        };

        mShowFactButton.OnClickListener(Listner);
    }
}

Messages: Information:Gradle tasks [:app:incrementalDebugSupportDex] :app:buildInfoDebugLoader :app:incrementalDebugJavaCompilationSafeguard UP-TO-DATE :app:compileDebugJavaWithJavac C:\Users\i7\AndroidStudioProjects\MyFunFactProject\app\src\main\java\com\example\i7\myfunfactproject\FunFactActivity.java Error:(30, 24) error: cannot find symbol method OnClickListener() Incremental compilation of 1 classes completed in 1.633 secs. :app:compileDebugJavaWithJavac FAILED Error:Execution failed for task ':app:compileDebugJavaWithJavac'.

Compilation failed; see the compiler error output for details. Information:BUILD FAILED Information:Total time: 7.176 secs Information:2 errors Information:0 warnings Information:See complete output in console

2 Answers

Steve Hunter
Steve Hunter
57,712 Points

Hi Zarah,

I think this line:

mShowFactButton.OnClickListener(Listener);

... needs to be ... 

mShowFactButton.setOnClickListener(Listener);

Let me know how you get on.

Steve.

aakarshrestha
aakarshrestha
6,509 Points
aakarshrestha
aakarshrestha
6,509 Points

You need to set the button to do the click action. For that you can do it multiple ways:

mShowFactButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                //do something here
            }
        });

or

 View.OnClickListener Listner = new View.OnClickListener(){

            @Override
            public void onClick(View v) {

            }
        };

        mShowFactButton.setOnClickListener(Listner);

Hope you understand how it can be done in multiple ways.

Happy coding!