/** 覆寫觸控事件,分辨出是否為連結的點擊。 */ @Override public boolean onTouchEvent(TextView widget, Spannable buffer, MotionEvent event) { int action = event.getAction(); // 取得事件類型 if (action == MotionEvent.ACTION_UP || action == MotionEvent.ACTION_DOWN) { int x = (int) event.getX(); int y = (int) event.getY(); x -= widget.getTotalPaddingLeft(); y -= widget.getTotalPaddingTop(); x += widget.getScrollX(); y += widget.getScrollY(); Layout layout = widget.getLayout(); int line = layout.getLineForVertical(y); int off = layout.getOffsetForHorizontal(line, x); ClickableSpan[] link = buffer.getSpans(off, off, ClickableSpan.class); if (link.length != 0) { // 是連結點擊 if (widget instanceof LinkTextView) { // 如果實體是LinkTextView ((LinkTextView) widget).linkHit = true; } if (action == MotionEvent.ACTION_UP) { // 放開時 // link[0].onClick(widget); // 開啟連結 String url = ((URLSpan) link[0]).getURL(); Utils.clickUrl(widget, url); } else if (action == MotionEvent.ACTION_DOWN) { // 按下時 Selection.setSelection( buffer, buffer.getSpanStart(link[0]), buffer.getSpanEnd(link[0])); // 選擇連結 } return true; } else { // 不是連結點擊 if (widget instanceof LinkTextView) { // 如果實體是LinkTextView ((LinkTextView) widget).linkHit = false; } Selection.removeSelection(buffer); Touch.onTouchEvent(widget, buffer, event); return false; } } return Touch.onTouchEvent(widget, buffer, event); }
@Override public boolean onTouchEvent(TextView widget, Spannable buffer, MotionEvent event) { if (mGray == null) { mGray = new BackgroundColorSpan( widget.getContext().getResources().getColor(R.color.selector_gray)); } mIsLinkHit = false; int action = event.getAction(); if (action == MotionEvent.ACTION_DOWN || action == MotionEvent.ACTION_UP) { int x = (int) event.getX(); int y = (int) event.getY(); /*if (DEBUG) { Log.d(TAG, "x = " + x + " y = " + y); }*/ x -= widget.getTotalPaddingLeft(); y -= widget.getTotalPaddingTop(); /*if (DEBUG) { Log.d(TAG, "x = " + x + " y = " + y); }*/ x += widget.getScrollX(); y += widget.getScrollY(); int line = widget.getLayout().getLineForVertical(y); int offset = widget.getLayout().getOffsetForHorizontal(line, x); ClickableSpan[] spans = buffer.getSpans(offset, offset, ClickableSpan.class); /*if (DEBUG) { Log.d(TAG, "x = " + x + " y = " + y); Log.d(TAG, "line = " + line + " offset = " + offset); Log.d(TAG, "spans.lenth = " + spans.length); }*/ if (spans.length != 0) { int start = buffer.getSpanStart(spans[0]); int end = buffer.getSpanEnd(spans[0]); mIsLinkHit = true; if (action == MotionEvent.ACTION_DOWN) { /*if (DEBUG) { Log.d(TAG, "Down event detected"); }*/ buffer.setSpan(mGray, start, end, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); } else if (action == MotionEvent.ACTION_UP) { /*if (DEBUG) { Log.d(TAG, "Up event detected"); }*/ spans[0].onClick(widget); buffer.removeSpan(mGray); } return true; } } else { buffer.removeSpan(mGray); } return Touch.onTouchEvent(widget, buffer, event); }