add viewUtils

app/src/main/java/com/stay4it/utilities/view/ViewUtils.java

@@ -0,0 +1,55 @@
+package com.stay4it.utilities.view;
+
+import android.view.MotionEvent;
+import android.view.View;
+import android.view.ViewGroup;
+import android.view.ViewParent;
+
+public class ViewUtils {
+    /** 把自身从父View中移除 */
+    public static void removeSelfFromParent(View view) {
+        //先找到父类，再通过父类移除孩子
+        if (view != null) {
+            ViewParent parent = view.getParent();
+            if (parent != null && parent instanceof ViewGroup) {
+                ViewGroup group = (ViewGroup) parent;
+                group.removeView(view);
+            }
+        }
+    }
+
+/** 请求View树重新布局，用于解决中层View有布局状态而导致上层View状态断裂 */
+public static void requestLayoutParent(View view, boolean isAll) {
+    ViewParent parent = view.getParent();
+    while (parent != null && parent instanceof View) {
+        if (!parent.isLayoutRequested()) {
+            parent.requestLayout();
+            if (!isAll) {
+                break;
+            }
+        }
+        parent = parent.getParent();
+    }
+}
+
+/** 判断触点是否落在该View上 */
+public static boolean isTouchInView(MotionEvent ev, View v) {
+    int[] vLoc = new int[2];
+    v.getLocationOnScreen(vLoc);
+    float motionX = ev.getRawX();
+    float motionY = ev.getRawY();
+    return motionX >= vLoc[0] &&
+            motionX <= (vLoc[0] + v.getWidth()) &&
+            motionY >= vLoc[1] &&
+            motionY <= (vLoc[1] + v.getHeight());
+}
+
+/** FindViewById的泛型封装，减少强转代码 */
+public static <T extends View> T findViewById(View layout, int id) {
+    return (T) layout.findViewById(id);
+}
+
+
+
+
+}