Android 根據座標擷取控制項方法

標籤：android   控制項   座標   

/** * 根據座標擷取相對應的子控制項<br> * 在Activity使用 *  * @param x座標 * @param y座標 * @return 目標View */public View getViewAtActivity(int x, int y) {// 從Activity裡擷取容器View root = getWindow().getDecorView();return findViewByXY(root, x, y);}/** * 根據座標擷取相對應的子控制項<br> * 在重寫ViewGroup使用 *  * @param x座標 * @param y座標 * @return 目標View */public View getViewAtViewGroup(int x, int y) {return findViewByXY(this, x, y);}private View findViewByXY(View view, int x, int y) {View targetView = null;if (view instanceof ViewGroup) {// 父容器,遍曆子控制項ViewGroup v = (ViewGroup) view;for (int i = 0; i < v.getChildCount(); i++) {targetView = findViewByXY(v.getChildAt(i), x, y);if (targetView != null) {break;}}} else {targetView = getTouchTarget(view, x, y);}return targetView;}private View getTouchTarget(View view, int x, int y) {View targetView = null;// 判斷view是否可以聚焦ArrayList<View> TouchableViews = view.getTouchables();for (View child : TouchableViews) {if (isTouchPointInView(child, x, y)) {targetView = child;break;}}return targetView;}private boolean isTouchPointInView(View view, int x, int y) {int[] location = new int[2];view.getLocationOnScreen(location);int left = location[0];int top = location[1];int right = left + view.getMeasuredWidth();int bottom = top + view.getMeasuredHeight();if (view.isClickable() && y >= top && y <= bottom && x >= left&& x <= right) {return true;}return false;}

Android 根據座標擷取控制項方法