package net.coding.program.common;
import android.text.Layout;
import android.text.Selection;
import android.text.Spannable;
import android.text.method.LinkMovementMethod;
import android.text.method.MovementMethod;
import android.text.style.ClickableSpan;
import android.view.MotionEvent;
import android.view.ViewConfiguration;
import android.widget.TextView;
/**
* LinkMovementMethod 对长按的情况没有考虑,长按依然会调用 onClick 事件
* 我做了一下判断
* Created by chaochen on 15/2/4.
*/
public class LongClickLinkMovementMethod extends LinkMovementMethod {
private long mActionDownTime = 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();
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) {
if (action == MotionEvent.ACTION_UP) {
if (System.currentTimeMillis() - mActionDownTime < ViewConfiguration.getLongPressTimeout()) {
link[0].onClick(widget);
}
} else if (action == MotionEvent.ACTION_DOWN) {
Selection.setSelection(buffer,
buffer.getSpanStart(link[0]),
buffer.getSpanEnd(link[0]));
mActionDownTime = System.currentTimeMillis();
}
return true;
} else {
Selection.removeSelection(buffer);
}
}
return super.onTouchEvent(widget, buffer, event);
}
public static MovementMethod getInstance() {
if (sInstance == null) {
sInstance = new LongClickLinkMovementMethod();
}
return sInstance;
}
private static LongClickLinkMovementMethod sInstance;
}