在坐标机器人将图像 [英] Place image at coordinates Android

问题描述

我有一个程序，我想放置图像的触摸事件的坐标。我有坐标，现在我只需要帮助放置的图像那里。我将使用一个绘制。

编辑** 我也希望它覆盖了另一幅图像。我找不到任何文件，在这个什么那么。我想这应该很容易。

谁能帮我？

编辑*的 * 的 心动不如行动，现在我只需要弄清楚如何获取图像的中间在触摸点，而不是左上角：

 最后查看touchView2 = findViewById（R.id.ImageView02）;
    touchView.setOnTouchListener（新View.OnTouchListener（）{
        @覆盖
        公共布尔onTouch（视图V，MotionEvent事件）{
            Log.v（X，Y，event.getY（）+，+ event.getX（））;
            touchView2.bringToFront（）;
            INT Y =（INT）event.getY（）;
            INT X =（int）的event.getX（）;

            touchView2.layout（X，Y​​，X + 48，Y + 48）;
                返回true;
        }
    }）;
 

解决方案

把你想在上面的应用程序的XML形象。 设置不可见或消失了......

替换：

 最后查看touchView2 = findViewById（R.id.ImageView02）;
 

在类的构造函数之前：

  ImageView的touchView2;
 

和在构造函数（的onCreate）方法

  touchView2 =（ImageView的）findViewById（R.id.ImageView02）;
 

现在成立了一个onTouchEventListener通过让所有触摸屏上。 如果这些坐标是在一个位置，你喜欢叫placeImage方法与pressed X和Y坐标。这种方法被放置在类的构造函数（的onCreate），所以下面的第一个方法应该是正确的外：

  @覆盖
公共布尔的onTouchEvent（MotionEvent事件）{
    super.onTouchEvent（事件）;
    INT eventAction = event.getAction（）;
    开关（eventAction）{
        案例MotionEvent.ACTION_DOWN：
            浮TouchX = event.getX（）;
            浮敏感= event.getY（）;
            placeImage（TouchX，敏感）;
            打破;
    }
    返回true;
}
 

现在的placeImage方式：

 私人无效placeImage（浮X，浮Y）{
    INT touchX =（INT）X;
    INT敏感=（INT）Y;

    //放置在触摸右下角
    touchView2.layout（touchX，敏感，touchX + 48，+敏感48）;

    //放置在触摸中心
    INT viewWidth = touchView2.getWidth（）;
    INT viewHeight = touchView2.getHeight（）;
    viewWidth = viewWidth / 2;
    viewHeight = viewHeight / 2;

    touchView2.layout（touchX  -  viewWidth，敏感 -  viewHeight，touchX + viewWidth，敏感+ viewHeight）;
}
 

这应该是你的答案......现在你只需要做的TouchView可见的：

  touchView2.setVisibility（0）;
 

I have a program in which I would like to place an image at the coordinates of a touch event. I have the coordinates now I just need help with placing an image there. I will be using a drawable.

Edit** I also want to overlay it over another image. I cant find any documentation on this what so ever. I would think it should be easy.

Can anyone help me?

EDIT** Got it, now I just have to figure out how to get the middle of the image at the touch spot and not the top left corner:

 final View touchView2 = findViewById(R.id.ImageView02);
    touchView.setOnTouchListener(new View.OnTouchListener() {
        @Override
        public boolean onTouch(View v, MotionEvent event) {
            Log.v("x,y",event.getY()+","+event.getX());
            touchView2.bringToFront();
            int y = (int)event.getY();
            int x = (int)event.getX();

            touchView2.layout(x, y, x+48, y+48);
                return true;
        }
    });

解决方案

place the image you want on top in the xml of your application. set it invisible or gone...

replace:

 final View touchView2 = findViewById(R.id.ImageView02);

before the classes constructor:

ImageView touchView2;

and in the constructor (onCreate) method

touchView2 = (ImageView) findViewById(R.id.ImageView02);

Now set up a onTouchEventListener by getting all touches on the screen. If those coordinates are in a position you like call the placeImage method with the pressed X and Y coordinate. this method is placed outside the class constructor (onCreate) so first method below should be right:

@Override
public boolean onTouchEvent(MotionEvent event) {
    super.onTouchEvent(event);
    int eventAction = event.getAction();
    switch(eventAction) {
        case MotionEvent.ACTION_DOWN:
            float TouchX = event.getX();
            float TouchY = event.getY();
            placeImage(TouchX, TouchY);
            break;
    }        
    return true;
}

now the placeImage method:

private void placeImage(float X, float Y) {
    int touchX = (int) X;
    int touchY = (int) Y;

    // placing at bottom right of touch
    touchView2.layout(touchX, touchY, touchX+48, touchY+48);

    //placing at center of touch
    int viewWidth = touchView2.getWidth();
    int viewHeight = touchView2.getHeight();
    viewWidth = viewWidth / 2;
    viewHeight = viewHeight / 2;

    touchView2.layout(touchX - viewWidth, touchY - viewHeight, touchX + viewWidth, touchY + viewHeight);
}

This should be your answer... now you only have to make touchView visible:

touchView2.setVisibility(0);

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