我有TextView，其中每个字都是ClickableSpan。单击时，单词变为粗体，单词的字典定义将显示在另一个 TextView 中。该应用程序正常工作，直到我选择 TextView 中的文本。当文本可选时，单击会显示定义，但双击时单词只有粗体。双击或长按选择文本（但长按不会使单词变为粗体）。
我的猜测是，问题与在动作处理过程中更新绘制状态有关，但我无法找到修复。我尝试设置TextView focusable="false"，但没有任何改变。相关代码如下。
curSpan = new WordSpan(index) {
@Override
public void onClick(View view) {
handleWordClick(index,this); // handles code to display definition
setMarking(true);
view.invalidate();
tvText.invalidate();
}
};
spannableStringBuilder.setSpan(curSpan, totalLength, totalLength + strWord, Spanned.SPAN_COMPOSING);
WordSpan的定义：
class WordSpan extends ClickableSpan
{
int id;
private boolean marking = false;
public WordSpan(int id) {
this.id = id;
}
@Override
public void updateDrawState(TextPaint ds) {
ds.setColor(Color.BLACK);
ds.setUnderlineText(false);
if (marking) {
ds.setTypeface(Typeface.create(myFont,Typeface.BOLD));
}
}
@Override
public void onClick(View v) {}
public void setMarking(boolean m) {
marking = m;
}
}
设置TextView的移动方法：
private MovementMethod createMovementMethod ( Context context ) {
final GestureDetector detector = new GestureDetector(context, new GestureDetector.SimpleOnGestureListener() {
@Override
public boolean onSingleTapUp ( MotionEvent e ) {
return true;
}
@Override
public boolean onSingleTapConfirmed ( MotionEvent e ) {
return true;
}
});
return new ScrollingMovementMethod() {
@Override
public boolean canSelectArbitrarily () {
return true;
}
@Override
public void initialize(TextView widget, Spannable text) {
Selection.setSelection(text, text.length());
}
@Override
public void onTakeFocus(TextView view, Spannable text, int dir) {
if ((dir & (View.FOCUS_FORWARD | View.FOCUS_DOWN)) != 0) {
if (view.getLayout() == null) {
// This shouldn't be null, but do something sensible if it is.
Selection.setSelection(text, text.length());
}
} else {
Selection.setSelection(text, text.length());
}
}
@Override
public boolean onTouchEvent ( TextView widget, Spannable buffer, MotionEvent event ) {
// check if event is a single tab
boolean isClickEvent = detector.onTouchEvent(event);
// detect span that was clicked
if (isClickEvent) {
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);
WordSpan[] link = buffer.getSpans(off, off, WordSpan.class);
if (link.length != 0) {
// execute click only for first clickable span
// can be a for each loop to execute every one
if (event.getAction() == MotionEvent.ACTION_UP) {
link[0].onClick(widget);
} else if (event.getAction() == MotionEvent.ACTION_DOWN) {
Selection.setSelection(buffer,
buffer.getSpanStart(link[0]),
buffer.getSpanEnd(link[0]));
}
return true;
}
}
// let scroll movement handle the touch
return super.onTouchEvent(widget, buffer, event);
}
};
}
编辑： 我刚刚发现了一个可能有助于解决问题的新怪癖。如果我双击但在点击之间更改单词（点击一个单词＆amp;然后快速单击另一个单词），则在第一次点击时显示该单词的定义，在第二次点击时，FIRST单词为粗体但选择了第二个单词（突出显示）并且仍显示第一个字的定义。
因此，例如，如果我双击＆＃34;首先＆＃34;然后＆＃34;秒＆＃34;，当我点击 ＆＃34;第一＆＃34; ＆＃34;第一个＆＃34;的定义将会显示，当我触摸时 ＆＃34;第二＆＃34;这个词＆＃34;第一个＆＃34;是大胆的，＆＃34;第二＆＃34;突出显示 但定义没有改变（仍然显示定义 ＆＃34;第一＆＃34;。）
答案 0 :(得分：0)
将createMovementMethod替换为以下内容。如果你错误面对错误plz修复它并编辑这个答案。
private MovementMethod createMovementMethod (final Context context ) {
return new ScrollingMovementMethod() {
public MotionEvent event;
public Spannable buffer;
public TextView widget;
final GestureDetector detector = new GestureDetector(context, new GestureDetector.SimpleOnGestureListener() {
@Override
public boolean onSingleTapUp ( MotionEvent e ) {
return true;
}
@Override
public boolean onSingleTapConfirmed ( MotionEvent e ) {
triggerClick();
return true;
}
@Override
public boolean onDoubleTap(MotionEvent e) {
triggerClick();
return true;
}
private boolean triggerClick() {
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);
WordSpan[] link = buffer.getSpans(off, off, WordSpan.class);
if (link.length != 0) {
// execute click only for first clickable span
// can be a for each loop to execute every one
if (event.getAction() == MotionEvent.ACTION_UP) {
link[0].onClick(widget);
} else if (event.getAction() == MotionEvent.ACTION_DOWN) {
Selection.setSelection(buffer,
buffer.getSpanStart(link[0]),
buffer.getSpanEnd(link[0]));
}
return true;
}
return true;
}
});
@Override
public boolean canSelectArbitrarily () {
return true;
}
@Override
public void initialize(TextView widget, Spannable text) {
Selection.setSelection(text, text.length());
}
@Override
public void onTakeFocus(TextView view, Spannable text, int dir) {
if ((dir & (View.FOCUS_FORWARD | View.FOCUS_DOWN)) != 0) {
if (view.getLayout() == null) {
// This shouldn't be null, but do something sensible if it is.
Selection.setSelection(text, text.length());
}
} else {
Selection.setSelection(text, text.length());
}
}
@Override
public boolean onTouchEvent (TextView widget, Spannable buffer, MotionEvent event ) {
// check if event is a single tab
boolean isClickEvent = detector.onTouchEvent(event);
//record this for GestureDetector
this.widget = widget;
this.buffer = buffer;
this.event = event;
// detect span that was clicked
if (isClickEvent) {
//ignore click here
return true;
}
// let scroll movement handle the touch
return super.onTouchEvent(widget, buffer, event);
}
};
}