检测触摸事件（用户触摸屏幕时提示信息）

MainActivity.java继承Activity类并实现OnTouchListener接口

public class MainActivity extends Activity implements OnTouchListener{@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);LinearLayout layout = new LinearLayout(this);//定义线性布局layout.setOnTouchListener(this);//设置触摸事件监听器setContentView(layout);//使用布局}@Overridepublic boolean onTouch(View v, MotionEvent event) {Toast.makeText(this, "发生触摸事件", Toast.LENGTH_SHORT).show();return true;}}