[Solved] How to use OnClick in android programming [closed]

Question

For doing some Action on Button Click following these Steps :

STEP 1:

Add a button in your Activity layout as:

<Button
    android:id="@+id/button_id_here"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"/>

STEP 2:

Add your NextActivity in AndroidManifest.xml as:

 <!-- your other xml  -->
 <application
  <!-- your other xml  -->
        <activity
            android:name=".NextActivity" />

 </application>

STEP 3:

In MainActivity code add a Button click Listener to button_id_here as:

public class MainActivity extends Activity {

    Button button_test;  //<< Create Button instance here
    Intent intent;       //<< For starting new Activity
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);

            // Add layout to Activity here
        setContentView(R.layout.your_Activity_layout);

         // Initilie button here
         button_test= (Button) findViewById(R.id.button_id_here);

               // add a onclick listner to button here
         button_test.setOnClickListener(new View.OnClickListener() {
         public void onClick(View v) {
              intent = new Intent(MainActivity.this,NextActivity.class);

              startActivity(intent); //<<< start Activity here
            }
        });
     }

}

if still facing to do some activity on Button click then learn here:

https://developer.android.com/training/index.html

Accepted Answer