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 onCreate(Bundle savedInstanceState)32 public void onCreate(Bundle savedInstanceState) { 33 super.onCreate(savedInstanceState); 34 setHasOptionsMenu(true); 35 } 36 37 @Override onActivityCreated(Bundle savedInstanceState)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 onOptionsItemSelected(MenuItem item)69 public boolean onOptionsItemSelected(MenuItem item) { 70 if (item.getItemId() == R.id.sample_action) { 71 clearLog(); 72 } 73 return true; 74 } 75 clearLog()76 public void clearLog() { 77 LogFragment logFragment = ((LogFragment) getActivity().getSupportFragmentManager() 78 .findFragmentById(R.id.log_fragment)); 79 logFragment.getLogView().setText(""); 80 } 81 } 82