CODEWITHSUNDEEP
javaandroidxml
WebDevDanno
WebDevDanno

Reputation: 1122

Android Buttons adding functionality

I have created some buttons in XML and I have method that will onClick open a URL. How do I link this method to my button so that on tap/onClick it will call the method.

Here's the method code:

    public void openResource() {
     Uri uri = Uri.parse("http://librarywales.org");
     Intent intent = new Intent(Intent.ACTION_VIEW, uri);
     startActivity(intent);
}

And I have created an instance of my XML Button in the onCreate method:

    public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    Button libButton = (Button) findViewById(R.id.button1);
}

How do I add that method to the libButton instance?

I have now solved the above issue with the help of 'vins' but when I run this application on the AVD and click on a button it pops up with an android message box saying. 'Unfortunately, ApplicationName has stopped working.'

Anyone know why this is?

Thanks, Dan

Upvotes: 1

Views: 939

Answers (5)

Vins
Vins

Reputation: 4119

public class YourActivity extends Activity  implements OnClickListener {
     public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

   Button libButton =(Button) findViewById(R.id.button1);
    libButton.setOnClickListener(this);

    Button OtherButton =(Button) findViewById(R.id.button2);
    OtherButton.setOnClickListener(this);


   }

 @Override
  public void onClick(View v) {

    switch (v.getId()) {
    case R.id.button1: openResource();
                           break;
    case R.id.button2: //do something for second button...

     default : break;
         }

Upvotes: 0

Malek Hijazi
Malek Hijazi

Reputation: 4162

public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

Button libButton = (Button) findViewById(R.id.button1);


libButton.setOnClickListener(new OnClickListener() 
{           
    @Override
    public void onClick(View v) 
    {
        if(v.getId()==R.id.button1){
           Uri uri = Uri.parse("http://librarywales.org");
           Intent intent = new Intent(Intent.ACTION_VIEW, uri);
           startActivity(intent);
        }
    }
});

}

Upvotes: 0

Srinivasan
Srinivasan

Reputation: 4661

If you have many buttons with in the page you can use button.setOnClickListener(this);

And override the OnClick() method within the method use Switch statement to match Which View has been selected.It's optimized and efficient way....

Upvotes: 0

user370305
user370305

Reputation: 109237

Put 

android:onClick="openResource"

In your xml file's button's property.

something like,

<Button
      android:id="@+id/button1"
      .
      .
      android:onClick="openResource"
      />

Note that this feature only is available on Android 2.1 (API Level 7) and higher

Upvotes: 1

pixelscreen
pixelscreen

Reputation: 1975

Add this after your button declaration

 libButton.setOnClickListener(new OnClickListener() 
    {           
        @Override
        public void onClick(View v) 
        {
            //open resource method call here...
        }
    });

Upvotes: 1

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