content: /*
  * Copyright (C) 2013 The Android Open Source Project
  *
  * 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.example.android.basicgesturedetect;
  
  import android.content.Intent;
  import android.os.Bundle;
  import android.support.v4.app.Fragment;
  import android.view.GestureDetector;
  import android.view.MenuItem;
  import android.view.MotionEvent;
  import android.view.View;
  
  import com.example.android.common.logger.Log;
  import com.example.android.common.logger.LogFragment;
  
  public class BasicGestureDetectFragment extends Fragment{
      @Override
      public void onCreate(Bundle savedInstanceState) {
          super.onCreate(savedInstanceState);
          setHasOptionsMenu(true);
      }
  
      @Override
      public void onActivityCreated(Bundle savedInstanceState) {
          super.onActivityCreated(savedInstanceState);
          View gestureView = getActivity().findViewById(R.id.sample_output);
          gestureView.setClickable(true);
          gestureView.setFocusable(true);
  
          // BEGIN_INCLUDE(init_detector)
  
          // First create the GestureListener that will include all our callbacks.
          // Then create the GestureDetector, which takes that listener as an argument.
          GestureDetector.SimpleOnGestureListener gestureListener = new GestureListener();
          final GestureDetector gd = new GestureDetector(getActivity(), gestureListener);
  
          /* For the view where gestures will occur, create an onTouchListener that sends
           * all motion events to the gesture detector.  When the gesture detector
           * actually detects an event, it will use the callbacks you created in the
           * SimpleOnGestureListener to alert your application.
          */
  
          gestureView.setOnTouchListener(new View.OnTouchListener() {
              @Override
              public boolean onTouch(View view, MotionEvent motionEvent) {
                  gd.onTouchEvent(motionEvent);
                  return false;
              }
          });
          // END_INCLUDE(init_detector)
      }
  
  
      @Override
      public boolean onOptionsItemSelected(MenuItem item) {
          if (item.getItemId() == R.id.sample_action) {
              clearLog();
          }
          return true;
      }
  
      public void clearLog() {
          LogFragment logFragment =  ((LogFragment) getActivity().getSupportFragmentManager()
                  .findFragmentById(R.id.log_fragment));
          logFragment.getLogView().setText("");
      }
  }
  