Add ability to intercept expanding animation

README.md

@@ -11,7 +11,7 @@ Button which is visible while user holds it. Main use case is controlling audio
 Add library as dependency to your `build.gradle`.
 
 ```
-compile 'com.dewarder:holdingbutton:0.0.7'
+compile 'com.dewarder:holdingbutton:0.0.8'
 ```
 
 ## How to use

holdingbutton/build.gradle

@@ -3,7 +3,7 @@ apply plugin: 'com.github.dcendents.android-maven'
 apply plugin: 'com.jfrog.bintray'
 
 ext {
-    artifactVersion = '0.0.7'
+    artifactVersion = '0.0.8'
     artifactName = 'holdingbutton'
     siteUrl = 'https://github.com/dewarder/HoldingButton'
     gitUrl = 'https://github.com/dewarder/HoldingButton.git'
@@ -110,7 +110,7 @@ bintray {
         vcsUrl = gitUrl
         version {
             name = artifactVersion
-            desc = 'Add ability to enable/disable HoldingButton'
+            desc = 'Add ability to intercept expanding animation'
             released = new Date()
             vcsTag = "$artifactVersion"
         }

holdingbutton/src/main/java/com/dewarder/holdinglibrary/HoldingButtonLayout.java

@@ -36,6 +36,7 @@
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.FrameLayout;
+import android.widget.Toast;
 
 import java.util.ArrayList;
 import java.util.List;
@@ -60,6 +61,7 @@ public class HoldingButtonLayout extends FrameLayout {
     private boolean mIsCancel = false;
     private boolean mIsExpanded = false;
 
+    private HoldingButtonTouchListener mTouchListener = new SimpleHoldingButtonTouchListener();
     private final DrawableListener mDrawableListener = new DrawableListener();
     private final List<HoldingButtonLayoutListener> mListeners = new ArrayList<>();
 
@@ -178,7 +180,7 @@ public boolean onInterceptTouchEvent(MotionEvent ev) {
         final int action = ev.getActionMasked();
         switch (action) {
             case MotionEvent.ACTION_DOWN: {
-                return isButtonEnabled() && isViewTouched(mHoldingView, ev);
+                return isButtonEnabled() && shouldInterceptAnimation() && isViewTouched(mHoldingView, ev);
             }
         }
 
@@ -191,7 +193,7 @@ public boolean onTouchEvent(MotionEvent event) {
 
         switch (action) {
             case MotionEvent.ACTION_DOWN: {
-                if (isButtonEnabled() && isViewTouched(mHoldingView, event)) {
+                if (isButtonEnabled() && shouldInterceptAnimation() && isViewTouched(mHoldingView, event)) {
                     mHoldingView.getLocationInWindow(mHoldingViewLocation);
                     getLocationInWindow(mViewLocation);
 
@@ -284,6 +286,10 @@ protected ViewGroup getDecorView() {
         return view;
     }
 
+    public void setTouchListener(@NonNull HoldingButtonTouchListener listener) {
+        mTouchListener = listener;
+    }
+
     public void addListener(HoldingButtonLayoutListener listener) {
         mListeners.add(listener);
     }
@@ -292,6 +298,10 @@ public void removeListener(HoldingButtonLayoutListener listener) {
         mListeners.remove(listener);
     }
 
+    private boolean shouldInterceptAnimation() {
+        return mTouchListener.onHoldingViewTouched();
+    }
+
     private boolean isViewTouched(View view, MotionEvent event) {
         view.getDrawingRect(mHoldingViewRect);
         view.getLocationOnScreen(mHoldingViewLocation);
@@ -442,6 +452,14 @@ private void notifyOnOffsetChanged(float offset, boolean isCancel) {
         }
     }
 
+    private class SimpleHoldingButtonTouchListener implements HoldingButtonTouchListener {
+
+        @Override
+        public boolean onHoldingViewTouched() {
+            return true;
+        }
+    }
+
     private class DrawableListener implements HoldingDrawableListener {
 
         @Override

holdingbutton/src/main/java/com/dewarder/holdinglibrary/HoldingButtonTouchListener.java

@@ -0,0 +1,15 @@
+package com.dewarder.holdinglibrary;
+
+/**
+ * Interface is used to intercept touch events.
+ * Can be used for cases when permissions or something else are needed and expanding animation isn't needed
+ */
+public interface HoldingButtonTouchListener {
+
+    /**
+     * Indicates that holding view is touched.
+     * Method is called before any method of `HoldingButtonLayoutListener`.
+     * @return false - if expanding animation must be canceled, true - if animation must be proceeded
+     */
+    boolean onHoldingViewTouched();
+}