Android在屏幕上拖放图像？

概述我正在为项目用户工作,将图像在一个位置移动到屏幕上的另一个位置.我写了一个示例代码来移动图像,但问题是如果我移动一个图像,相邻的图像也开始移动..这是示例代码.任何一个想法.Main.javapublicclassMainActivityextendsActivity{intwindowwidth;intwindowhei

我正在为项目用户工作,将图像在一个位置移动到屏幕上的另一个位置.我写了一个示例代码来移动图像,但问题是如果我移动一个图像,相邻的图像也开始移动..这是示例代码.任何一个想法.

Main.java

public class MainActivity extends Activity  {   int windowwIDth;   int windowheight;       ImageVIEw ima1,ima2;   private androID.Widget.relativeLayout.LayoutParams layoutParams ;   // private androID.Widget.relativeLayout.LayoutParams layoutParams ;   //private androID.Widget.relativeLayout.LayoutParams layoutParams ;                @OverrIDe     public voID onCreate(Bundle savedInstanceState) {         super.onCreate(savedInstanceState);         setContentVIEw(R.layout.main);         windowwIDth = getwindowManager().getDefaultdisplay().getWIDth();         windowheight = getwindowManager().getDefaultdisplay().getHeight();         System.out.println("wIDth" +windowwIDth);         System.out.println("height" +windowheight);                      ima1 = (ImageVIEw)findVIEwByID(R.ID.imagevIEw1);         ima1.setontouchListener(new VIEw.OntouchListener() {  public boolean ontouch(VIEw v, MotionEvent event) {       layoutParams = (relativeLayout.LayoutParams) ima1.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();              System.out.println("value of x" +x_cord);              System.out.println("value of y" +y_cord);                               if (x_cord > windowwIDth) {                        x_cord = windowwIDth;                       }                    if (y_cord > windowheight) {                        y_cord = windowheight;                       }             layoutParams.leftmargin = x_cord-25;             layoutParams.topmargin = y_cord-25;             //   layoutParams.rightmargin = x_cord-25;             //   layoutParams.bottommargin = y_cord-25;             ima1.setLayoutParams(layoutParams);                     break;               default: break;              }                 return true;            }         });         ima2 = (ImageVIEw)findVIEwByID(R.ID.imagevIEw2);         ima2.setontouchListener(new VIEw.OntouchListener() {              public boolean ontouch(VIEw v, MotionEvent event) {         layoutParams = (relativeLayout.LayoutParams) ima2.getLayoutParams();              switch(event.getActionMasked())                 {                   case MotionEvent.ACTION_DOWN:                       break;                   case MotionEvent.ACTION_MOVE:                       int x_cord = (int) event.getRawX();                       int y_cord = (int) event.getRawY();                       System.out.println("value of x1" +x_cord);                   System.out.println("value of y1" +y_cord);                                                    if (x_cord > windowwIDth) {                            x_cord = windowwIDth;                        }                        if (y_cord > windowheight) {                            y_cord = windowheight;                        }                        layoutParams.leftmargin = x_cord - 25;                        layoutParams.topmargin = y_cord - 75;                        ima2.setLayoutParams(layoutParams);                        break;                    default: break;                }                return true;            }        });       }   }

main.xml中

  <?xml version="1.0" enCoding="utf-8"?>    <relativeLayout         xmlns:androID="http://schemas.androID.com/apk/res/androID"        androID:layout_wIDth="fill_parent"        androID:layout_height="fill_parent">  <ImageVIEw     androID:layout_wIDth="100dp"     androID:layout_height="100dp"    androID:ID="@+ID/imagevIEw1"     androID:src="@drawable/image1"  />    <ImageVIEw    androID:layout_wIDth="100sp"     androID:layout_height="100sp"     androID:ID="@+ID/imagevIEw2"    androID:src="@drawable/image2"   />              </relativeLayout>

解决方法:

将以下代码写入您的活动文件.

windowwIDth = getwindowManager().getDefaultdisplay().getWIDth();windowheight = getwindowManager().getDefaultdisplay().getHeight();tv1 = (ImageVIEw)findVIEwByID(R.ID.image);tv1.setontouchListener(new VIEw.OntouchListener() {             @OverrIDe    public boolean ontouch(VIEw v, MotionEvent event) {        layoutParams1 = (relativeLayout.LayoutParams) tv1.getLayoutParams();        switch(event.getActionMasked())        {            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;                }                layoutParams1.leftmargin = x_cord - 25;                layoutParams1.topmargin = y_cord - 75;                tv1.setLayoutParams(layoutParams1);                break;            default:                break;        }        return true;    }});tv2 = (ImageVIEw)findVIEwByID(R.ID.image1);tv2.setontouchListener(new VIEw.OntouchListener() {             @OverrIDe    public boolean ontouch(VIEw v, MotionEvent event) {        layoutParams2 = (relativeLayout.LayoutParams) tv2.getLayoutParams();        switch(event.getActionMasked())        {            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;                }                layoutParams2.leftmargin = x_cord - 25;                layoutParams2.topmargin = y_cord - 75;                tv2.setLayoutParams(layoutParams2);                break;            default:                break;        }        return true;    }});

XML文件： –

<?xml version="1.0" enCoding="utf-8"?><relativeLayout xmlns:androID="http://schemas.androID.com/apk/res/androID"    androID:layout_wIDth="fill_parent"    androID:layout_height="fill_parent">    <ImageVIEw androID:layout_wIDth="50sp" androID:layout_height="50sp"        androID:ID="@+ID/image" androID:src="@drawable/image">    </ImageVIEw>    <ImageVIEw androID:layout_y="30dip" androID:layout_x="118dip"        androID:layout_wIDth="50sp" androID:layout_height="50sp" androID:ID="@+ID/image1"        androID:src="@drawable/image1">    </ImageVIEw></relativeLayout>

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