Android Open Source - cwac-viewswiper View Swiper

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License

The source code is released under:

Apache License

Java Source Code

/* Copyright (c) 2010 -- CommonsWare, LLC
//from   w w w . ja v a2 s.  co  m
   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

     http://www.apache.org/licenses/LICENSE-2.0

   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.
*/
   
package com.commonsware.cwac.swiper;

import android.content.Context;
import android.gesture.Gesture;
import android.gesture.GestureLibraries;
import android.gesture.GestureLibrary;
import android.gesture.GestureOverlayView;
import android.gesture.Prediction;
import android.util.AttributeSet;
import android.view.View;
import android.widget.ViewFlipper;
import java.util.ArrayList;
import com.commonsware.cwac.parcel.ParcelHelper;

public class ViewSwiper extends GestureOverlayView
  implements GestureOverlayView.OnGesturePerformedListener {
  private ParcelHelper parcel=null;
  private GestureLibrary gestureLibrary=null;
  private ViewFlipper flipper=null;

  public ViewSwiper(Context ctxt) {
    this(ctxt, null);
  }
  
  public ViewSwiper(Context ctxt, AttributeSet attrs) {
    this(ctxt, attrs, 0);
  }
  
  public ViewSwiper(Context ctxt, AttributeSet attrs, int defStyle) {
    super(ctxt, attrs, defStyle);

    parcel=new ParcelHelper("cwac-swiper", getContext());
    flipper=new ViewFlipper(getContext());
    
    addOnGesturePerformedListener(this);
    addView(flipper);
    
    gestureLibrary=GestureLibraries.fromRawResource(getContext(),
                                                    parcel.getIdentifier("gestures",
                                                                         "raw"));
    gestureLibrary.load();    
  }
  
  @Override
  public void onFinishInflate() {
    int count=getChildCount();
    ArrayList<View> toMove=new ArrayList<View>();
    
    for (int i=0;i<count;i++) {
      View child=getChildAt(i);
      
      if (child!=flipper) {
        toMove.add(child);
      }
    }
    
    for (View child : toMove) {
      removeView(child);
      flipper.addView(child);
    }
  }
  
  public void onGesturePerformed(GestureOverlayView overlay, Gesture gesture) {
    ArrayList<Prediction> predictions=gestureLibrary.recognize(gesture);

    if (predictions.size()>0) {
      Prediction prediction=predictions.get(0);
      
      if (prediction.score>1.0) {
        if (prediction.name.startsWith("West")) {
          moveToNext();
        }
        else {
          moveToPrevious();
        }
      }
    }
  }
  
  public ViewFlipper getFlipper() {
    return(flipper);
  }
  
  protected void moveToNext() {
    flipper.showNext();
  }
  
  protected void moveToPrevious() {
    flipper.showPrevious();
  }
}

Java Source Code List

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