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      1 /*
      2 * Copyright (C) 2013 The Android Open Source Project
      3 *
      4 * Licensed under the Apache License, Version 2.0 (the "License");
      5 * you may not use this file except in compliance with the License.
      6 * You may obtain a copy of the License at
      7 *
      8 *      http://www.apache.org/licenses/LICENSE-2.0
      9 *
     10 * Unless required by applicable law or agreed to in writing, software
     11 * distributed under the License is distributed on an "AS IS" BASIS,
     12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13 * See the License for the specific language governing permissions and
     14 * limitations under the License.
     15 */
     16 
     17 package com.example.android.basicgesturedetect;
     18 
     19 import android.content.Intent;
     20 import android.os.Bundle;
     21 import android.support.v4.app.Fragment;
     22 import android.view.GestureDetector;
     23 import android.view.MenuItem;
     24 import android.view.MotionEvent;
     25 import android.view.View;
     26 
     27 import com.example.android.common.logger.Log;
     28 import com.example.android.common.logger.LogFragment;
     29 
     30 public class BasicGestureDetectFragment extends Fragment{
     31     @Override
     32     public void onCreate(Bundle savedInstanceState) {
     33         super.onCreate(savedInstanceState);
     34         setHasOptionsMenu(true);
     35     }
     36 
     37     @Override
     38     public void onActivityCreated(Bundle savedInstanceState) {
     39         super.onActivityCreated(savedInstanceState);
     40         View gestureView = getActivity().findViewById(R.id.sample_output);
     41         gestureView.setClickable(true);
     42         gestureView.setFocusable(true);
     43 
     44         // BEGIN_INCLUDE(init_detector)
     45 
     46         // First create the GestureListener that will include all our callbacks.
     47         // Then create the GestureDetector, which takes that listener as an argument.
     48         GestureDetector.SimpleOnGestureListener gestureListener = new GestureListener();
     49         final GestureDetector gd = new GestureDetector(getActivity(), gestureListener);
     50 
     51         /* For the view where gestures will occur, create an onTouchListener that sends
     52          * all motion events to the gesture detector.  When the gesture detector
     53          * actually detects an event, it will use the callbacks you created in the
     54          * SimpleOnGestureListener to alert your application.
     55         */
     56 
     57         gestureView.setOnTouchListener(new View.OnTouchListener() {
     58             @Override
     59             public boolean onTouch(View view, MotionEvent motionEvent) {
     60                 gd.onTouchEvent(motionEvent);
     61                 return false;
     62             }
     63         });
     64         // END_INCLUDE(init_detector)
     65     }
     66 
     67 
     68     @Override
     69     public boolean onOptionsItemSelected(MenuItem item) {
     70         if (item.getItemId() == R.id.sample_action) {
     71             clearLog();
     72         }
     73         return true;
     74     }
     75 
     76     public void clearLog() {
     77         LogFragment logFragment =  ((LogFragment) getActivity().getSupportFragmentManager()
     78                 .findFragmentById(R.id.log_fragment));
     79         logFragment.getLogView().setText("");
     80     }
     81 }
     82