improve the smoothness of the drag dismsiss

Author: klinker24

CHANGELOG.md

@@ -1,5 +1,9 @@
 # Changelog
 
+### v1.5.1
+
+* Smooth out the drag dismiss animation
+
 ### v1.5.0
 
 * Don't assume 24dp for the status bar size (Essential Ph-1)

README.md

@@ -19,7 +19,7 @@ To include it in your project, add this to your module's `build.gradle` file:
 ```groovy
 dependencies {
 	...
-	compile 'com.klinkerapps:drag-dismiss-activity:1.5.0'
+	compile 'com.klinkerapps:drag-dismiss-activity:1.5.1'
 }
 ```
 

gradle.properties

@@ -14,16 +14,16 @@
 # limitations under the License.
 #
 
-GRADLE_PLUGIN_VERSION=3.0.0-beta6
-BUILD_TOOLS_VERSION=26.0.1
+GRADLE_PLUGIN_VERSION=3.0.1
+BUILD_TOOLS_VERSION=27.0.1
 
-ANDROID_SUPPORT_VERSION=26.0.1
+ANDROID_SUPPORT_VERSION=27.1.0
 
 MIN_SDK=15
-TARGET_SDK=26
-COMPILE_SDK=26
+TARGET_SDK=27
+COMPILE_SDK=27
 
-VERSION_NAME=1.5.0
+VERSION_NAME=1.5.1
 VERSION_CODE=1
 GROUP=com.klinkerapps
 

library/src/main/java/xyz/klinker/android/drag_dismiss/view/ElasticDragDismissFrameLayout.java

@@ -23,6 +23,7 @@
 import android.graphics.RectF;
 import android.support.v4.view.ViewCompat;
 import android.util.AttributeSet;
+import android.view.MotionEvent;
 import android.view.View;
 import android.view.animation.AnimationUtils;
 import android.view.animation.Interpolator;
@@ -63,6 +64,7 @@ public class ElasticDragDismissFrameLayout extends FrameLayout {
     private float totalDrag;
     private boolean draggingDown = false;
     private boolean draggingUp = false;
+    private int lastEventAction = Integer.MIN_VALUE;
 
     private boolean enabled = true;
 
@@ -152,6 +154,12 @@ public void onNestedScroll(View target, int dxConsumed, int dyConsumed,
         }
     }
 
+    @Override
+    public boolean onInterceptTouchEvent(MotionEvent ev) {
+        lastEventAction = ev.getAction();
+        return super.onInterceptTouchEvent(ev);
+    }
+
     @Override
     public void onStopNestedScroll(View child) {
         if (enabled) {
@@ -162,14 +170,24 @@ public void onStopNestedScroll(View child) {
                     fastOutSlowInInterpolator = AnimationUtils.loadInterpolator(getContext(),
                             android.R.interpolator.fast_out_slow_in);
                 }
-                getChildAt(0).animate()
-                        .translationY(0f)
-                        .scaleX(1f)
-                        .scaleY(1f)
-                        .setDuration(200L)
-                        .setInterpolator(fastOutSlowInInterpolator)
-                        .setListener(null)
-                        .start();
+
+                if (lastEventAction == MotionEvent.ACTION_DOWN) {
+                    // this is a 'defensive cleanup for new gestures',
+                    // don't animate here
+                    // see also https://github.com/nickbutcher/plaid/issues/185
+                    setTranslationY(0f);
+                    setScaleX(1f);
+                    setScaleY(1f);
+                } else {
+                    getChildAt(0).animate()
+                            .translationY(0f)
+                            .scaleX(1f)
+                            .scaleY(1f)
+                            .setDuration(200L)
+                            .setInterpolator(fastOutSlowInInterpolator)
+                            .setListener(null)
+                            .start();
+                }
 
                 ValueAnimator animator = null;
                 if (draggingUp) {