Android得到控件在屏幕中的坐標

 

getLocationOnScreen ，計算該視圖在全局坐標系中的x，y值，（注意這個值是要從屏幕頂端算起，也就是索包括了通知欄的高度）//獲取在當前屏幕內的絕對坐標

getLocationInWindow ，計算該視圖在它所在的widnow的坐標x，y值，//獲取在整個窗口內的絕對坐標 (不是很理解= =、)

getLeft , getTop, getBottom, getRight, 這一組是獲取相對在它父親里的坐標

如果在Activity的OnCreate()事件輸出那些參數，是全為0，要等UI控件都加載完了才能獲取到這些。

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("圖片各個角Left："+t.getLeft()+"Right："+t.getRight()+"Top："+t.getTop()+"Bottom："+t.getBottom()); } } }

 

<?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>