Question

我有五个线性布局..我把一个图像放在centerlayout中，现在如果用户点击粉色布局图像应该在那个布局中传输，我使用了动画，那么任何人都可以帮我吗？

public class MainActivity extends Activity implements OnTouchListener,OnDragListener{
private static final String LOGCAT = null;
private LinearLayout centers;
private ImageView imageview1;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    centers=(LinearLayout)findViewById(R.id.centLayout);
    imageview1=(ImageView)findViewById(R.id.textView1);
    findViewById(R.id.textView1).setOnTouchListener(this);
    findViewById(R.id.pinkLayout).setOnDragListener(this);
    findViewById(R.id.yellowLayout).setOnDragListener(this);
    findViewById(R.id.blackLayout).setOnDragListener(this);
    findViewById(R.id.centLayout).setOnDragListener(this);
    findViewById(R.id.redLayout).setOnDragListener(this);
    centers.setOnTouchListener(new OnTouchListener() {

        @Override
        public boolean onTouch(View v, MotionEvent event) {
            // TODO Auto-generated method stub

            imageview1.setVisibility(View.VISIBLE);
             imageview1.bringToFront();
                                int y = (int)event.getY();
                                int x = (int)event.getX();

                                imageview1.getLayoutParams().height = 20;
                                imageview1.getLayoutParams().width = 20;
                                imageview1.layout(x, y, x+48, y+48);

            return false;

        }
    });

}
public boolean onTouch(View view, MotionEvent motionEvent) { 
        if (motionEvent.getAction() == MotionEvent.ACTION_DOWN) {
          DragShadowBuilder shadowBuilder = new View.DragShadowBuilder(view);
          view.startDrag(null, shadowBuilder, view, 0);
          view.setVisibility(View.INVISIBLE);


          return true;
        }
        else {
            return false;
        }
}  
public boolean onDrag(View layoutview, DragEvent dragevent) {
      int action = dragevent.getAction();
      switch (action) {
      case DragEvent.ACTION_DRAG_STARTED:
          Log.d(LOGCAT, "Drag event started");
        break;
      case DragEvent.ACTION_DRAG_ENTERED:
          Log.d(LOGCAT, "Drag event entered into "+layoutview.toString());
        break;
      case DragEvent.ACTION_DRAG_EXITED:
          Log.d(LOGCAT, "Drag event exited from "+layoutview.toString());
        break;
      case DragEvent.ACTION_DROP:
        Log.d(LOGCAT, "Dropped");
        View view = (View) dragevent.getLocalState();
        ViewGroup owner = (ViewGroup) view.getParent();
        owner.removeView(view);
        LinearLayout container = (LinearLayout) layoutview;
        container.addView(view);
        view.setVisibility(View.VISIBLE);
        break;
      case DragEvent.ACTION_DRAG_ENDED:
              Log.d(LOGCAT, "Drag ended");
          break;
      default:
        break;
      }
      return true;
}

}

activity_main.xml中

 <RelativeLayout xmlns:tools="http://schemas.android.com/tools"
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/center"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity" >



<LinearLayout
    android:id="@+id/pinkLayout"
    android:layout_width="fill_parent"
    android:layout_height="75dp"
    android:background="#FF8989"
    android:orientation="vertical" >


</LinearLayout>

 <LinearLayout
    android:id="@+id/blackLayout"
    android:layout_width="75dp"
    android:layout_height="match_parent"
    android:layout_below="@+id/pinkLayout"
    android:layout_above="@+id/yellowLayout"
    android:background="#000000"
    android:orientation="vertical"

     >
</LinearLayout>
 <LinearLayout
    android:id="@+id/centLayout"
    android:layout_width="170dp"
    android:layout_height="match_parent"
    android:layout_below="@+id/pinkLayout"
    android:layout_above="@+id/yellowLayout"
    android:layout_toRightOf="@+id/blackLayout"

    android:background="#D30000"
    android:orientation="horizontal"

     >
     <ImageView
    android:id="@+id/textView1"
    android:layout_width="50dp"
    android:layout_height="50dp"
    android:src="@drawable/spadeone"
    android:layout_gravity="center"
   android:layout_marginLeft="55dp"

   />

    </LinearLayout>
     <LinearLayout
    android:id="@+id/redLayout"
    android:layout_width="75dp"
    android:layout_height="match_parent"
    android:layout_below="@+id/pinkLayout"
    android:layout_above="@+id/yellowLayout"
    android:layout_toRightOf="@+id/blackLayout"
    android:background="#000000"
    android:orientation="vertical"
   android:layout_marginLeft="170dp"
     >
</LinearLayout>
<LinearLayout
    android:id="@+id/yellowLayout"
    android:layout_width="fill_parent"
    android:layout_height="75dp"

    android:background="#FFCC00"
    android:orientation="vertical"
    android:layout_alignParentBottom="true"
     >
</LinearLayout>



    </RelativeLayout>

move_up.xml

<set
xmlns:android="http://schemas.android.com/apk/res/android"
android:interpolator="@android:anim/linear_interpolator"
android:fillAfter="true">

   <translate
   android:fromXDelta="0%p"


    android:toYDelta="-65%p"
    android:duration="800" />

 </set>

Answer 1

获取特定位置的Rect坐标并检查拖动的项目坐标是否与Rect坐标位置发生冲突。您可以使用Rect.contains（）api进行检查。如果返回true，则可以显示警报。

if (locationRect.contains(drag.left, drag.top, drag.right, drag.bottom)) {
    // do what you want to do now
}

要跟踪拖动视图的位置，请将以下内容添加到拖动侦听器

case DragEvent.ACTION_DRAG_EXITED :
x_cord = (int) event.getX(); // add to your dragEvent
y_cord = (int) event.getY(); // add to your dragEvent

case DragEvent.ACTION_DRAG_LOCATION :
x_cord = (int) event.getX(); // add to your dragEvent
y_cord = (int) event.getY(); // add to your dragEvent

拖动图像并将其放在屏幕中的所需位置

1 个答案: