本文整理汇总了Java中android.view.MotionEvent.getHistoricalPressure方法的典型用法代码示例。如果您正苦于以下问题：Java MotionEvent.getHistoricalPressure方法的具体用法？Java MotionEvent.getHistoricalPressure怎么用？Java MotionEvent.getHistoricalPressure使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类android.view.MotionEvent的用法示例。
在下文中一共展示了MotionEvent.getHistoricalPressure方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: onTouchEvent
import android.view.MotionEvent; //导入方法依赖的package包/类
/** Process incoming touch events */
@SuppressWarnings("unused")
public boolean onTouchEvent(MotionEvent event) {
try {
int pointerCount = multiTouchSupported ? (Integer) m_getPointerCount.invoke(event) : 1;
if (DEBUG)
Log.i("MultiTouch", "Got here 1 - " + multiTouchSupported + " " + mMode + " " + handleSingleTouchEvents + " " + pointerCount);
if (mMode == MODE_NOTHING && !handleSingleTouchEvents && pointerCount == 1)
// Not handling initial single touch events, just pass them on
return false;
if (DEBUG)
Log.i("MultiTouch", "Got here 2");
// Handle history first (we sometimes get history with ACTION_MOVE events)
int action = event.getAction();
int histLen = event.getHistorySize() / pointerCount;
for (int histIdx = 0; histIdx <= histLen; histIdx++) {
// Read from history entries until histIdx == histLen, then read from current event
boolean processingHist = histIdx < histLen;
if (!multiTouchSupported || pointerCount == 1) {
// Use single-pointer methods -- these are needed as a special case (for some weird reason) even if
// multitouch is supported but there's only one touch point down currently -- event.getX(0) etc. throw
// an exception if there's only one point down.
if (DEBUG)
Log.i("MultiTouch", "Got here 3");
xVals[0] = processingHist ? event.getHistoricalX(histIdx) : event.getX();
yVals[0] = processingHist ? event.getHistoricalY(histIdx) : event.getY();
pressureVals[0] = processingHist ? event.getHistoricalPressure(histIdx) : event.getPressure();
} else {
// Read x, y and pressure of each pointer
if (DEBUG)
Log.i("MultiTouch", "Got here 4");
int numPointers = Math.min(pointerCount, MAX_TOUCH_POINTS);
if (DEBUG && pointerCount > MAX_TOUCH_POINTS)
Log.i("MultiTouch", "Got more pointers than MAX_TOUCH_POINTS");
for (int ptrIdx = 0; ptrIdx < numPointers; ptrIdx++) {
int ptrId = (Integer) m_getPointerId.invoke(event, ptrIdx);
pointerIds[ptrIdx] = ptrId;
// N.B. if pointerCount == 1, then the following methods throw an array index out of range exception,
// and the code above is therefore required not just for Android 1.5/1.6 but also for when there is
// only one touch point on the screen -- pointlessly inconsistent :(
xVals[ptrIdx] = (Float) (processingHist ? m_getHistoricalX.invoke(event, ptrIdx, histIdx) : m_getX.invoke(event, ptrIdx));
yVals[ptrIdx] = (Float) (processingHist ? m_getHistoricalY.invoke(event, ptrIdx, histIdx) : m_getY.invoke(event, ptrIdx));
pressureVals[ptrIdx] = (Float) (processingHist ? m_getHistoricalPressure.invoke(event, ptrIdx, histIdx) : m_getPressure
.invoke(event, ptrIdx));
}
}
// Decode event
decodeTouchEvent(pointerCount, xVals, yVals, pressureVals, pointerIds, //
/* action = */processingHist ? MotionEvent.ACTION_MOVE : action, //
/* down = */processingHist ? true : action != MotionEvent.ACTION_UP //
&& (action & ((1 << ACTION_POINTER_INDEX_SHIFT) - 1)) != ACTION_POINTER_UP //
&& action != MotionEvent.ACTION_CANCEL, //
processingHist ? event.getHistoricalEventTime(histIdx) : event.getEventTime());
}
return true;
} catch (Exception e) {
// In case any of the introspection stuff fails (it shouldn't)
Log.e("MultiTouchController", "onTouchEvent() failed", e);
return false;
}
}