Android~~获取view在屏幕中的位置

···

getLocalVisibleRect ， 返回一个填充的Rect对象， 感觉是这个View的Rect大小，left，top取到的都是0

···

getGlobalVisibleRect ， 获取全局坐标系的一个视图区域， 返回一个填充的Rect对象；该Rect是基于总整个屏幕的

···

getLocationOnScreen ，计算该视图在全局坐标系中的x，y值，（注意这个值是要从屏幕顶端算起，也就是索包括了通知栏的高度）//获取在当前屏幕内的绝对坐标

···

getLocationInWindow ，计算该视图在它所在的widnow的坐标x，y值，//获取在整个窗口内的绝对坐标 (不是很理解= =、)

···

getLeft , getTop, getBottom, getRight,  这一组是获取相对在它父亲里的坐标

···

**注**：如果在Activity的OnCreate()事件输出那些参数，是全为0，要等UI控件都加载完了才能获取到这些（个人感觉好像是得有焦点，不是很清楚，待查查）

example:

    int[] location = new int[2];
    v.getLocationOnScreen(location);
    int x = location[0];
    int y = location[1];

XML：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:padding="5px"
    >
    <ViewFlipper
        android:id="@+id/fliper"  
        android:layout_width="fill_parent"  
        android:layout_height="100dp"  
        android:background="#FFFFFF"
        android:flipInterval="2000" > 
        <TextView  
            android:id="@+id/tv_1" 
            android:text="Hello1"
            android:layout_width="wrap_content"  
            android:layout_height="wrap_content"  
            android:layout_gravity="center_horizontal"> 
         </TextView>
        <TextView  
            android:id="@+id/tv_2" 
            android:text="Hello"
            android:layout_width="wrap_content"  
            android:layout_height="wrap_content"
            android:layout_gravity="center_horizontal"> 
        </TextView> 
     </ViewFlipper>
     <Button android:id="@+id/button2"
             android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:text="B"
            android:layout_gravity="center_horizontal"
            />
</LinearLayout>

JavaCode：

import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ViewFlipper;

public class ViewLocationActivity extends Activity {
    private ViewFlipper flipper;
    private Rect mRectSrc = new Rect();
    int[] location = new int[2];
    int x, y;

    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        flipper = (ViewFlipper) findViewById(R.id.fliper);
        Log.d("demo", "left:" + flipper.getLeft());
        Log.d("demo", "right:" + flipper.getRight());
        Log.d("demo", "Top:" + flipper.getTop());
        Log.d("demo", "Bottom:" + flipper.getBottom());

        Button btn = (Button) findViewById(R.id.button2);
        btn.setOnClickListener(new OnClickListener() {
            public void onClick(View v) {

                Log.d("demo", "Button.Width--->" + v.getWidth());
                Log.d("demo", "Button.Height--->" + v.getHeight());

                v.getLocalVisibleRect(mRectSrc);
                Log.d("demo", "LocalVisibleRect--->" + mRectSrc);

                v.getGlobalVisibleRect(mRectSrc);
                Log.d("demo", "GlobalVisibleRect--->" + mRectSrc);

                v.getLocationOnScreen(location);
                x = location[0];
                y = location[1];
                Log.d("demo", "Screenx--->" + x + "  " + "Screeny--->" + y);

                v.getLocationInWindow(location);
                x = location[0];
                y = location[1];
                Log.d("demo", "Window--->" + x + "  " + "Window--->" + y);

                Log.d("demo", "left:" + v.getLeft());
                Log.d("demo", "right:" + v.getRight());
                Log.d("demo", "Top:" + v.getTop());
                Log.d("demo", "Bottom:" + v.getBottom());
            }
        });
    }
}

**显示**

Button.Width--->470
Button.Height--->72
LocalVisibleRect--->Rect(0, 0 - 470, 72)
GlobalVisibleRect--->Rect(5, 231 - 475, 303)
Screenx--->5  Screeny--->231
Windowx--->5  Windowy--->231
left:5
right:475
Top:155
Bottom:227

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本人新手，材料来自网络