Basiaclly我对此非常陌生并且我有点挣扎,我已经有了这个代码来完美地拖放一个图像。
我现在想要这样做,所以我可以拖动第二个单独的图像,我将如何转换这个允许我拖动另一个图像究竟如何第一个
import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.MotionEvent;
import android.view.View;
import android.widget.ImageView;
import android.widget.FrameLayout.LayoutParams;
public class ApproachingLeft extends Activity {
private CanvasView customCanvas;
int windowwidth;
int windowheight;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_approaching_left);
customCanvas = (CanvasView) findViewById(R.id.signature_canvas);
windowwidth = getWindowManager().getDefaultDisplay().getWidth();
windowheight = getWindowManager().getDefaultDisplay().getHeight();
final ImageView balls = (ImageView)findViewById(R.id.car);
balls.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
LayoutParams layoutParams = (LayoutParams) balls.getLayoutParams();
switch(event.getAction())
{
case MotionEvent.ACTION_DOWN:
break;
case MotionEvent.ACTION_MOVE:
int x_cord = (int)event.getRawX();
int y_cord = (int)event.getRawY();
if(x_cord>windowwidth){x_cord=windowwidth;}
if(y_cord>windowheight){y_cord=windowheight;}
layoutParams.leftMargin = x_cord -25;
layoutParams.topMargin = y_cord - 75;
balls.setLayoutParams(layoutParams);
break;
default:
break;
}
return true;
}
});
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_start_screen, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_menu) {
return true;
}
return super.onOptionsItemSelected(item);
}
public void clearCanvas(View v) {
customCanvas.clearCanvas();
}
}
我现在想要这样做,所以我可以拖动第二个单独的图像,我将如何转换这个允许我拖动另一个图像究竟如何第一个