/** 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);
}