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Android得到控件在屏幕中的坐标

 

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 , getTopgetBottomgetRight, 这一组是获取相对在它父亲里的坐标

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。

[java] view plaincopy
 package xiaosi.location;    import android.app.Activity;  import android.os.Bundle;  import android.view.View;  import android.view.View.OnClickListener;  import android.widget.Button;  import android.widget.ImageView;    public class LocationActivity extends Activity {      /** Called when the activity is first created. */      private ImageView t = null;      private Button button = null;      @Override      public void onCreate(Bundle savedInstanceState) {          super.onCreate(savedInstanceState);          setContentView(R.layout.main);                    t = (ImageView)findViewById(R.id.l);          button = (Button)findViewById(R.id.button);          button.setOnClickListener(new buttonListener());      }         public class buttonListener implements OnClickListener{            public void onClick(View v)          {              int[] location = new int[2];              t.getLocationOnScreen(location);              int x = location[0];              int y = location[1];              System.out.println("x:"+x+"y:"+y);              System.out.println("图片各个角Left:"+t.getLeft()+"Right:"+t.getRight()+"Top:"+t.getTop()+"Bottom:"+t.getBottom());          }      }  }  

  

  view plaincopy

 
<?xml version="1.0" encoding="utf-8"?>  <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"      android:layout_width="fill_parent"      android:layout_height="fill_parent"      android:orientation="vertical" >        <Button          android:id="@+id/button"          android:layout_width="fill_parent"          android:layout_height="wrap_content"          android:text="button"/>      <ImageView          android:id="@+id/l"          android:layout_width="wrap_content"          android:layout_height="wrap_content"          android:layout_gravity="center"          android:src="@drawable/a" />  </LinearLayout>  

 


 

 

http://blog.csdn.net/sjf0115/article/details/7306284