Create a Button
Description
The basic button class in Android is android.widget.Button.
You use it to handle click events.
Example
The following code shows how to add a button to activity and add click action handler.
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical">
/* w w w. j a v a 2 s . c om*/
<Button android:id="@+id/button1"
android:text="My Button"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
</LinearLayout>
Java code
package com.java2s.app;
/* w ww. j a va 2 s .c o m*/
import android.app.Activity;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
public class MainActivity extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button button1 = (Button) this.findViewById(R.id.button1);
button1.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse("http://www.java2s.com"));
startActivity(intent);
}
});
}
}
