0
Hello! in Javascript to pass a value to the function I do:
<button onclick="myFunction('valor')">Click me</button>
and crawl like this:
function myFunction(a){alert(a);}
and in java on android, as I do?
0
Hello! in Javascript to pass a value to the function I do:
<button onclick="myFunction('valor')">Click me</button>
and crawl like this:
function myFunction(a){alert(a);}
and in java on android, as I do?
3
Represents a widget button. Buttons can be pressed or clicked by the user to perform an action. A typical use of an Activity button would be the following
public class MyActivity extends Activity {
protected void onCreate(Bundle icicle) {
super.onCreate(icicle);
setContentView(R.layout.content_layout_id);
final Button button = (Button) findViewById(R.id.button_id);
button.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
// Faça algo aqui quando clicar no botão.
}
});
}
}
However, instead of applying Onclicklistener to the button in your Activity, you can assign a method to the button in the XML layout, using the attribute android:onClick
. For example:
<Button
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:text="@string/self_destruct"
android:onClick="selfDestruct" />
Now, when a user clicks on the button, the Android system calls the activity method selfDestruct(View)
. For this to work, the method must be public and accept a View
as its only parameter. For example:
public void selfDestruct(View view) {
// Faça algo aqui quando clicar no botão.
}
To View
passed to the method is a reference to the widget that was clicked.
Reference here: Documentación Oficial
0
<Button
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:text="@string/self_destruct"
android:onClick="selfDestruct" />
taken from the above answer, it is quite simple.
0
It would be better if you put what you need to facilitate the help... but it would be something +- like this...
public static int soma(int a, int b)
{
int c = a + b;
return c;
}
thanks in advance, and how do I create the button in xml layout
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I don’t understand why this answer... if it’s already in the other answer why repeat it so often!
– brasofilo