I am developing a piano app, currently I am working on something to make my buttons play their sounds while user "slides" his finger over them.
To achieve this, I've chosen onFocusChangeListener
. It is not the part, in which i am adding sounds into, but right now i am to make buttons work as an example.
Unfortuntely, I have got a couple of errors.
JAVA:
package com.example.android.appname;
import android.media.MediaPlayer;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.Toast;
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ImageView button = (ImageView) findViewById(R.id.button);
button.setOnFocusChangeListener()**setOnFocusChangeListener (OnfocusChangeListener) in View cannot be applied to ()**;**'}'expected**
public void onFocusChange**methed 'OnFocusChange(android.view.View,boolean)' is never used**(View v, boolean hasFocus))**"{" or ";" expected|unexpected token** {
if(hasFocus**cannot resolve symbol "hasFocus"**){
Toast.makeText(getApplicationContext(), "FOCUS", Toast.LENGTH_LONG).show();
}else {
Toast.makeText(getApplicationContext(), "NO FOCUS", Toast.LENGTH_LONG).show();
}
}
}); **class or interface expected**
}**class or interface expected**
Errors are shown with in **'s