android添加触摸事件

android触摸事件

package com.example.touch_1;

import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnTouchListener;
import android.widget.RelativeLayout;
import android.widget.Toast;

public class MainActivity extends Activity implements OnTouchListener {

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);     1111
		RelativeLayout myLayout = (RelativeLayout) findViewById(R.id.myLayout);///222
		myLayout.setOnTouchListener(this);/3333这三句话的顺序很重要

	}

	@Override
	public boolean onTouch(View v, MotionEvent event) {
		// TODO Auto-generated method stub
		Toast.makeText(MainActivity.this, "发生触摸", Toast.LENGTH_SHORT).show();

		return false;
	}
}

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/myLayout"这里要加id
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="${relativePackage}.${activityClass}" >

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/hello_world" />

</RelativeLayout>