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GestureDetector with on ItemLongclick
原标题:GestureDetector with onItemLongclick

• 如何将地质构造者与ItemLongClick结合起来?

我有一份载有三张图像的《GridView》。 当我谈到第一个形象时,我要展示一个托阿斯特信息。 当我从屏幕上提升我的指手时,我要显示第二个托阿斯特信息。

我知道,GestureDetector使用Event,但ItemLongClick没有。 但是,在这种情况下,我需要跟踪电网中的图像位置识别,因此不可能在Touch()实施?

最佳回答

你可以跟踪治疗者的动议,看看看它是否使用这一类别,如果它跨越下一个情况,你可以处理这一事件。 这方面的例子有:

    @Override public boolean onTouchEvent(MotionEvent event) {
        int action = event.getActionMasked();
        if (action != MotionEvent.ACTION_UP && action != MotionEvent.ACTION_CANCEL) {
            int N = event.getHistorySize();
            int P = event.getPointerCount();
            for (int i = 0; i < N; i++) {
                for (int j = 0; j < P; j++) {
                    mCurX = event.getHistoricalX(j, i);
                    mCurY = event.getHistoricalY(j, i);
                    drawPoint(mCurX, mCurY,
                            event.getHistoricalPressure(j, i),
                            event.getHistoricalTouchMajor(j, i));
                }
            }
            for (int j = 0; j < P; j++) {
                mCurX = event.getX(j);
                mCurY = event.getY(j);
                drawPoint(mCurX, mCurY, event.getPressure(j), event.getTouchMajor(j));
            }
        }
        return true;
    }

您可以读到更多版本,见以下网址:C:YourInstall Dirandroid-sdksamplesandroid-10ApiDemossrccomexampleandroidapisgraphics TouchPaint.java, 或只是查阅动议的全部案例。 活动在其中增加了几个用途。

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