1 /* 2 * Copyright 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.view.GestureDetector; 20 import android.view.MotionEvent; 21 22 import com.example.android.common.logger.Log; 23 24 public class GestureListener extends GestureDetector.SimpleOnGestureListener { 25 26 public static final String TAG = "GestureListener"; 27 28 // BEGIN_INCLUDE(init_gestureListener) 29 @Override 30 public boolean onSingleTapUp(MotionEvent e) { 31 // Up motion completing a single tap occurred. 32 Log.i(TAG, "Single Tap Up"); 33 return false; 34 } 35 36 @Override 37 public void onLongPress(MotionEvent e) { 38 // Touch has been long enough to indicate a long press. 39 // Does not indicate motion is complete yet (no up event necessarily) 40 Log.i(TAG, "Long Press"); 41 } 42 43 @Override 44 public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX, 45 float distanceY) { 46 // User attempted to scroll 47 Log.i(TAG, "Scroll"); 48 return false; 49 } 50 51 @Override 52 public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, 53 float velocityY) { 54 // Fling event occurred. Notification of this one happens after an "up" event. 55 Log.i(TAG, "Fling"); 56 return false; 57 } 58 59 @Override 60 public void onShowPress(MotionEvent e) { 61 // User performed a down event, and hasn't moved yet. 62 Log.i(TAG, "Show Press"); 63 } 64 65 @Override 66 public boolean onDown(MotionEvent e) { 67 // "Down" event - User touched the screen. 68 Log.i(TAG, "Down"); 69 return false; 70 } 71 72 @Override 73 public boolean onDoubleTap(MotionEvent e) { 74 // User tapped the screen twice. 75 Log.i(TAG, "Double tap"); 76 return false; 77 } 78 79 @Override 80 public boolean onDoubleTapEvent(MotionEvent e) { 81 // Since double-tap is actually several events which are considered one aggregate 82 // gesture, there's a separate callback for an individual event within the doubletap 83 // occurring. This occurs for down, up, and move. 84 Log.i(TAG, "Event within double tap"); 85 return false; 86 } 87 88 @Override 89 public boolean onSingleTapConfirmed(MotionEvent e) { 90 // A confirmed single-tap event has occurred. Only called when the detector has 91 // determined that the first tap stands alone, and is not part of a double tap. 92 Log.i(TAG, "Single tap confirmed"); 93 return false; 94 } 95 // END_INCLUDE(init_gestureListener) 96 } 97
