Android--取得控件在手机屏幕上的位置

import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;

/**
 * 如果在Activity的OnCreate()事件输出控件位置数据，是全为0，要等UI控件都加载完了才能获取到数据。
 * @author ZLQ
 *
 */
public class GetLocationData extends Activity {
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
    }
    
    /*
     * 单击按钮事件
     */
    public void click(View v){
    	View view = findViewById(R.id.button2);
    	//数组长度必须为2
    	int[] locations = new int[2];
    	view.getLocationOnScreen(locations);
    	int x = locations[0];//获取组件当前位置的横坐标
    	int y = locations[1];//获取组件当前位置的纵坐标
    	Log.i("System.out", "x:" + x + "y:" + y);
    }
}

 

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/linearlayout"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="horizontal" >

    <Button
        android:id="@+id/button2"
        android:layout_width="80dp"
        android:layout_height="80dp"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="150dp"
        android:onClick="click"
        android:text="Button" />

</RelativeLayout>