MotionEvent中getX()和getRawX()的区别

首先我们通过一个button进行一下测试,可以知道:
Java代码 
 
public class Res extends Activity implements View.OnTouchListener {  
 
    Button btn = null;  
    int x = 0;  
    int y = 0;  
    int rawx = 0;  
    int rawy = 0;  
 
    /** Called when the activity is first created. */ 
    @Override 
    public void onCreate(Bundle savedInstanceState) {  
        super.onCreate(savedInstanceState);  
        setContentView(R.layout.main);  
        btn = (Button) findViewById(R.id.button);  
        btn.setOnTouchListener(this);  
    }  
 
    public boolean onTouch(View view, MotionEvent event) {  
        int eventaction = event.getAction();  
        switch (eventaction) {  
        case MotionEvent.ACTION_DOWN:  
            break;  
        case MotionEvent.ACTION_MOVE:  
            x = (int) event.getX();  
            y = (int) event.getY();  
            rawx = (int) event.getRawX();  
            rawy = (int) event.getRawY();  
            Log.d("DEBUG", "getX=" + x + "getY=" + y + "\n" + "getRawX=" + rawx  
                    + "getRawY=" + rawy + "\n");  
            break;  
 
        case MotionEvent.ACTION_UP:  
 
            break;  
        }  
        return false;  
    }  
} 


public class Res extends Activity implements View.OnTouchListener {

Button btn = null;
int x = 0;
int y = 0;
int rawx = 0;
int rawy = 0;

/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
btn = (Button) findViewById(R.id.button);
btn.setOnTouchListener(this);
}

public boolean onTouch(View view, MotionEvent event) {
int eventaction = event.getAction();
switch (eventaction) {
case MotionEvent.ACTION_DOWN:
break;
case MotionEvent.ACTION_MOVE:
x = (int) event.getX();
y = (int) event.getY();
rawx = (int) event.getRawX();
rawy = (int) event.getRawY();
Log.d("DEBUG", "getX=" + x + "getY=" + y + "\n" + "getRawX=" + rawx
+ "getRawY=" + rawy + "\n");
break;

case MotionEvent.ACTION_UP:

break;
}
return false;
}
}


getX()是表示Widget相对于自身左上角的x坐标,而getRawX()是表示相对于屏幕左上角的x坐标值(注意:这个屏幕左上角是手机屏幕左上角,不管activity是否有titleBar或是否全屏幕),getY(),getRawY()一样的道理