我有一个带有许多TextViewClickableSpan

在单击ClickableSpan时,我必须在屏幕上获取它的坐标(以便在他的位置显示自定义View)。

问题是我不知道该怎么做。 onClick()ClickableSpan方法在参数中给我一个View,即包含TextViewClickableSpan

我已经使用以下命令在TextView中获取字符位置,但是我不知道如何将其转换为在文本屏幕上获取x/y位置。

@Override
public void onClick(View v){

    SpannableString completeText = (SpannableString)((TextView) v).getText();
    Log.v("characters position", completeText.getSpanStart(this) + " / " + completeText.getSpanEnd(this));

}

在此先感谢您的帮助!

编辑:我想获取ClickableSpan的整个坐标及其大小,目的是在文本的底部中心显示我的自定义 View 。 onTouch方法将给我手指的位置,而不是整个文本的坐标。因此,使用这种方法,我将不会获得本文的中间部分。

最佳答案

我找到了解决方案:-)
就是这样,这可能会帮助像我一样遇到同样问题的其他人!

// Initialize global value
this.parentTextViewRect = new Rect();


// Initialize values for the computing of clickedText position
SpannableString completeText = (SpannableString)(parentTextView).getText();
Layout textViewLayout = parentTextView.getLayout();

double startOffsetOfClickedText = completeText.getSpanStart(clickedText);
double endOffsetOfClickedText = completeText.getSpanEnd(clickedText);
double startXCoordinatesOfClickedText = textViewLayout.getPrimaryHorizontal((int)startOffsetOfClickedText);
double endXCoordinatesOfClickedText = textViewLayout.getPrimaryHorizontal((int)endOffsetOfClickedText);


// Get the rectangle of the clicked text
int currentLineStartOffset = textViewLayout.getLineForOffset((int)startOffsetOfClickedText);
int currentLineEndOffset = textViewLayout.getLineForOffset((int)endOffsetOfClickedText);
boolean keywordIsInMultiLine = currentLineStartOffset != currentLineEndOffset;
textViewLayout.getLineBounds(currentLineStartOffset, this.parentTextViewRect);


// Update the rectangle position to his real position on screen
int[] parentTextViewLocation = {0,0};
parentTextView.getLocationOnScreen(parentTextViewLocation);

double parentTextViewTopAndBottomOffset = (
    parentTextViewLocation[1] -
    parentTextView.getScrollY() +
    this.parentTextView.getCompoundPaddingTop()
);
this.parentTextViewRect.top += parentTextViewTopAndBottomOffset;
this.parentTextViewRect.bottom += parentTextViewTopAndBottomOffset;

// In the case of multi line text, we have to choose what rectangle take
if (keywordIsInMultiLine){

    int screenHeight = this.mWindowManager.getDefaultDisplay().getHeight();
    int dyTop = this.parentTextViewRect.top;
    int dyBottom = screenHeight - this.parentTextViewRect.bottom;
    boolean onTop = dyTop > dyBottom;

    if (onTop){
        endXCoordinatesOfClickedText = textViewLayout.getLineRight(currentLineStartOffset);
    }
    else{
        this.parentTextViewRect = new Rect();
        textViewLayout.getLineBounds(currentLineEndOffset, this.parentTextViewRect);
        this.parentTextViewRect.top += parentTextViewTopAndBottomOffset;
        this.parentTextViewRect.bottom += parentTextViewTopAndBottomOffset;
        startXCoordinatesOfClickedText = textViewLayout.getLineLeft(currentLineEndOffset);
    }

}

this.parentTextViewRect.left += (
    parentTextViewLocation[0] +
    startXCoordinatesOfClickedText +
    this.parentTextView.getCompoundPaddingLeft() -
    parentTextView.getScrollX()
);
this.parentTextViewRect.right = (int) (
    this.parentTextViewRect.left +
    endXCoordinatesOfClickedText -
    startXCoordinatesOfClickedText
);

10-07 19:14