实施GestureDetector一个ImageView的 [英] implement GestureDetector for an ImageView

问题描述

好moorning：

我在我的活动的ImageView的和我的设置好的的的OntOuchListner（）我的ImageView，这意味着我实现了这个接口为我的ImageView的是这样的：

 公共类mapActivity扩展活动
{

    // --------------------------------------
    私人ImageView的ImageView的;

    / **
     *第一次创建活动时调用。
     * /
    @覆盖
    公共无效的onCreate（包savedInstanceState）{
        super.onCreate（savedInstanceState）;


        的setContentView（R.layout.main）;
        ImageView的=（ImageView的）this.findViewById（R.id.imageView1）;

        AddImageViewEvents（）;
    }
私人无效AddImageViewEvents（）{


        imageView.setOnTouchListener（新ImageView.OnTouchListener（）{
            公共布尔onTouch（视图V，MotionEvent事件）{
                INT动作，pointerCount，我;
                行动= event.getAction（）;
                pointerCount = event.getPointerCount（）;

                    开关（动作）{
                        案例MotionEvent.ACTION_DOWN：
                            // code在这里
                            打破;

                        案例MotionEvent.ACTION_MOVE：
                           // code在这里
                          打破;

                        默认：
                            打破;
                    }

                返回true;
            }

   }
 

我想通过同样的方法设置GestureDetector我的ImageView，我不知道这是可能的。

感谢。

解决方案

 公共类TestImageView扩展ImageView的实现OnGestureListener {
    公共TestImageView（上下文的背景下）{
        超（上下文）;
        // TODO自动生成构造函数存根

        setOnTouchListener（新View.OnTouchListener（）{

            @覆盖
            公共布尔onTouch（视图V，MotionEvent事件）{
                // TODO自动ge`enter code here`nerated方法存根
                返回false;
            }
        }）;
    }

    @覆盖
    公共布尔onDown（MotionEvent E）{
        // TODO自动生成方法存根
        返回false;
    }

    @覆盖
    公共布尔onFling（MotionEvent E1，E2 MotionEvent，浮velocityX，
            浮动velocityY）{
        // TODO自动生成方法存根
        返回false;
    }

    @覆盖
    公共无效onLong preSS（MotionEvent E）{
        // TODO自动生成方法存根

    }

    @覆盖
    公共布尔onScroll（MotionEvent E1，E2 MotionEvent，浮distanceX，
            浮动distanceY）{
        // TODO自动生成方法存根
        返回false;
    }

    @覆盖
    公共无效OnShow中preSS（MotionEvent E）{
        // TODO自动生成方法存根

    }

    @覆盖
    公共布尔onSingleTapUp（MotionEvent E）{
        // TODO自动生成方法存根
        返回false;
    }
}
 

现在你可以在你的XML只使用的ImageView的TestImageView代替。

Good moorning :

I have an ImageView in my Activity and I setted the OntOuchListner() to my ImageView, which means that I implemented that interface for my ImageView like this :

public class mapActivity extends Activity
{

    //--------------------------------------
    private ImageView imageView;

    /**
     * Called when the activity is first created.
     */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);


        setContentView(R.layout.main);
        imageView = (ImageView) this.findViewById(R.id.imageView1);

        AddImageViewEvents();
    }
private void AddImageViewEvents() {


        imageView.setOnTouchListener(new ImageView.OnTouchListener() {
            public boolean onTouch(View v, MotionEvent event) {
                int action, pointerCount, i;
                action = event.getAction();
                pointerCount = event.getPointerCount();

                    switch (action) {
                        case MotionEvent.ACTION_DOWN:
                            //code here
                            break;

                        case MotionEvent.ACTION_MOVE:
                           //code here
                          break;

                        default:
                            break;
                    }

                return true;
            }

   }

I want by the same way set the GestureDetector to my ImageView, I don't know if this is possible.

Thanks.

解决方案

public class TestImageView extends ImageView  implements OnGestureListener{
    public TestImageView(Context context) {
        super(context);
        // TODO Auto-generated constructor stub

        setOnTouchListener(new View.OnTouchListener() {

            @Override
            public boolean onTouch(View v, MotionEvent event) {
                // TODO Auto-ge`enter code here`nerated method stub
                return false;
            }
        });
    }

    @Override
    public boolean onDown(MotionEvent e) {
        // TODO Auto-generated method stub
        return false;
    }

    @Override
    public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,
            float velocityY) {
        // TODO Auto-generated method stub
        return false;
    }

    @Override
    public void onLongPress(MotionEvent e) {
        // TODO Auto-generated method stub

    }

    @Override
    public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX,
            float distanceY) {
        // TODO Auto-generated method stub
        return false;
    }

    @Override
    public void onShowPress(MotionEvent e) {
        // TODO Auto-generated method stub

    }

    @Override
    public boolean onSingleTapUp(MotionEvent e) {
        // TODO Auto-generated method stub
        return false;
    }
}

Now you can use TestImageView in your xml instead of just ImageView.

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