android开发_Button控件

public class MainActive extends Activity {
	/** Called when the activity is first created. */
	private Button button = null;

	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);
		button = (Button) findViewById(R.id.button1);
		button.setOnClickListener(new OnClickListener() {
			
			@Override
			public void onClick(View v) {
			
				Toast.makeText(MainActive.this, "你点击了按钮！", Toast.LENGTH_LONG).show();
				
			}
		});
	}
}

<Button
	android:id="@+id/button1"
	android:layout_width="wrap_content"
	android:layout_height="wrap_content"
	android:text="button1"
/>