我想在ClickableSpan包含的文本上注册点击次数,只要他们点击超过1秒钟。有没有办法做到这一点?如果没有,捕获双击也没关系。
如果onClick方法捕获了一个包含关于点击的元数据的事件,那将是很好的 - 如果点击长度很短,我可以说忽略。
有什么建议吗?
谢谢,Victor
答案 0 :(得分:11)
如果有人需要,我会在this place
上找到它 package leeon.mobile.BBSBrowser;
import android.text.Layout;
import android.text.Selection;
import android.text.Spannable;
import android.text.method.LinkMovementMethod;
import android.text.method.MovementMethod;
import android.view.MotionEvent;
import android.widget.TextView;
public class LongClickLinkMovementMethod extends LinkMovementMethod {
private Long lastClickTime = 0l;
private int lastX = 0;
private int lastY = 0;
@Override
public boolean onTouchEvent(TextView widget, Spannable buffer,
MotionEvent event) {
int action = event.getAction();
if (action == MotionEvent.ACTION_UP ||
action == MotionEvent.ACTION_DOWN) {
int x = (int) event.getX();
int y = (int) event.getY();
lastX = x;
lastY = y;
int deltaX = Math.abs(x-lastX);
int deltaY = Math.abs(y-lastY);
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);
LongClickableSpan[] link = buffer.getSpans(off, off, LongClickableSpan.class);
if (link.length != 0) {
if (action == MotionEvent.ACTION_UP) {
if (System.currentTimeMillis() - lastClickTime < 1000)
link[0].onClick(widget);
else if (deltaX < 10 && deltaY < 10)
link[0].onLongClick(widget);
} else if (action == MotionEvent.ACTION_DOWN) {
Selection.setSelection(buffer,
buffer.getSpanStart(link[0]),
buffer.getSpanEnd(link[0]));
lastClickTime = System.currentTimeMillis();
}
return true;
}
}
return super.onTouchEvent(widget, buffer, event);
}
public static MovementMethod getInstance() {
if (sInstance == null)
sInstance = new LongClickLinkMovementMethod();
return sInstance;
}
private static LongClickLinkMovementMethod sInstance;
}
[1]: http://java2s.com/Open-Source/Java/SSH/brick-leeon/leeon/mobile/BBSBrowser/LongClickLinkMovementMethod.java.htm
LongClickableSpan在同一个地方:
package leeon.mobile.BBSBrowser;
import android.text.style.ClickableSpan;
import android.view.View;
public abstract class LongClickableSpan extends ClickableSpan {
abstract public void onLongClick(View view);
}
答案 1 :(得分:1)
我想做同样的事情,我想到的唯一方法是自定义MovementMethod类替换LinkMovementMethod和替换ClickableSpan,它添加了一个长按抽象方法。实际上很简单:
编辑:像魅力一样工作。我犯了一些愚蠢的错误,例如从不同的Android版本下载LinkMovementMethod而不是在setSpan()中使用新的ClickableSpan类,但没有什么严重的。