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安卓 surfaceview 添加点击事件

功能说明：在一个Activity页面中，点击页面布局中的MapView(继承SurfaceView)，实现页面中的某个元素隐藏和显示。

贴出MapView的代码：

  1 /**
  2  * @author gr
  3  */
  4 package com.cn.gordon.exhibition.walk.view;
  5 
  6 import android.content.Context;
  7 import android.graphics.Bitmap;
  8 import android.graphics.Canvas;
  9 import android.graphics.Color;
 10 import android.graphics.Matrix;
 11 import android.graphics.Paint;
 12 import android.graphics.PorterDuff.Mode;
 13 import android.util.AttributeSet;
 14 import android.util.Log;
 15 import android.view.GestureDetector;
 16 import android.view.GestureDetector.SimpleOnGestureListener;
 17 import android.view.MotionEvent;
 18 import android.view.SurfaceHolder;
 19 import android.view.SurfaceHolder.Callback;
 20 import android.view.SurfaceView;
 21 import android.view.View;
 22 
 23 /**
 24  * @author gr
 25  * 
 26  */
 27 public class MapView extends SurfaceView implements Callback {
 28 
 29     private Context context;
 30     private Bitmap bitmap_map;
 31     private Paint bitmap_paint;
 32     private float move_x, move_y;
 33     private int view_W, view_H;
 34     private float offset = 1, offset_back = 1,myPosition_degree = 0;
 35     private GestureDetector mGestureDetector;
 36     private MyPosition myPosition;
 37 
 38     public MapView(Context context, AttributeSet attrs, int defStyle) {
 39         super(context, attrs, defStyle);
 40         init(context);
 41     }
 42 
 43     public MapView(Context context, AttributeSet attrs) {
 44         super(context, attrs);
 45         init(context);
 46     }
 47 
 48     public MapView(Context context) {
 49         super(context);
 50         init(context);
 51         setFocusable(true);//使用Key event,setFocusable(true)可以聚焦
 52     }
 53 
 54     private void init(Context context) {
 55         this.context = context;
 56         bitmap_paint = new Paint();
 57         bitmap_paint.setAntiAlias(true);
 58         myPosition = new MyPosition(this.context);
 59         mGestureDetector = new GestureDetector(this.context,
 60                 new MyOnGestureListener());
 61         getHolder().addCallback(this);
 62         setOnClickListener(new OnClickListener() {
 63             
 64             @Override
 65             public void onClick(View v) {
 66                 // TODO Auto-generated method stub
 67                 if (v!=null) {
 68                     
 69                 }
 70             }
 71         });
 72         setOnTouchListener(new OnTouchListener() {
 73 
 74             @Override
 75             public boolean onTouch(View v, MotionEvent event) {
 76                 if (event.getPointerCount() > 1) {
 77                     return false;
 78                 }
 79                 mGestureDetector.onTouchEvent(event);
 80                 return true;
 81             }
 82         });
 83     }
 84 
 85     public void setMap(Bitmap bitmap) {
 86         bitmap_map = bitmap;
 87         move_x = 0;
 88         move_y = 0;
 89         if (view_W != 0) {
 90             offset_back = offset = (float) view_W
 91                     / (float) bitmap_map.getWidth();
 92         }
 93 
 94         draw();
 95 
 96     }
 97 
 98     public synchronized void doDraw(Canvas canvas) {
 99         canvas.drawColor(Color.TRANSPARENT, Mode.CLEAR);
100         if (bitmap_map == null) {
101             return;
102         }
103 
104         Matrix matrix = new Matrix();
105         matrix.postScale(offset, offset);
106         matrix.postTranslate(move_x, move_y);
107         canvas.drawBitmap(bitmap_map, matrix, bitmap_paint);
108         myPosition.draw(canvas, (100*offset+move_x), (100*offset+move_y), myPosition_degree);
109     }
110 
111     @Override
112     public void surfaceChanged(SurfaceHolder holder, int format, int width,
113             int height) {
114         // TODO Auto-generated method stub
115 
116     }
117 
118     @Override
119     public void surfaceCreated(SurfaceHolder holder) {
120         view_W = getWidth();
121         view_H = getHeight();
122         if (bitmap_map != null) {
123             offset_back = offset = (float) view_W
124                     / (float) bitmap_map.getWidth();
125         }
126         draw();
127 
128     }
129 
130     @Override
131     public void surfaceDestroyed(SurfaceHolder holder) {
132         // TODO Auto-generated method stub
133 
134     }
135 
136     private void draw() {
137         Canvas canvas = getHolder().lockCanvas(null);
138         if (canvas != null) {
139             doDraw(canvas);
140         }
141         if (canvas != null) {
142             getHolder().unlockCanvasAndPost(canvas);
143         }
144     }
145 
146     private class MyOnGestureListener extends SimpleOnGestureListener {
147 
148         @Override
149         public boolean onSingleTapUp(MotionEvent e) {
150             Log.i(">>>>>>>>>>>>>>>>>>>>>>>>>>>>>", "mapview onSingleTapUp click");
151             return true;
152         }
153 
154         @Override
155         public boolean onScroll(MotionEvent e1, MotionEvent e2,
156                 float distanceX, float distanceY) {
157             move_x = move_x - distanceX;
158             move_y = move_y - distanceY;
159             if (move_x > 0) {
160                 move_x = 0;
161             }
162 
163             if (move_x < (view_W - bitmap_map.getWidth() * offset)) {
164                 move_x = view_W - bitmap_map.getWidth() * offset;
165                 if (move_x > 0) {
166                     move_x = 0;
167                 }
168             }
169             if (move_y > 0) {
170                 move_y = 0;
171             }
172             if (move_y < (view_H - bitmap_map.getHeight() * offset)) {
173                 move_y = view_H - bitmap_map.getHeight() * offset;
174                 if (move_y > 0) {
175                     move_y = 0;
176                 }
177             }
178             Log.i(">>>>>>>>>>>>>>>>>>>>>>>>>>>>>", "mapview onScroll click");
179             draw();
180             return true;
181         }
182 
183         @Override
184         public boolean onDown(MotionEvent e) {
185             temp_x = 0;
186             temp_y = 0;
187             Log.i(">>>>>>>>>>>>>>>>>>>>>>>>>>>>>", "mapview onDown click");
188             return true;
189         }
190 
191         @Override
192         public boolean onDoubleTapEvent(MotionEvent e) {
193 
194             offset = offset_back;
195             move_x = 0;
196             move_y = 0;
197             Log.i(">>>>>>>>>>>>>>>>>>>>>>>>>>>>>", "mapview onDoubleTapEvent click");
198             draw();
199             return true;
200         }
201 
202         @Override
203         public boolean onSingleTapConfirmed(MotionEvent e) {
204             Log.i(">>>>>>>>>>>>>>>>>>>>>>>>>>>>>", "mapview onSingleTapConfirmed click");
205             if(clickLinster != null){
206                 clickLinster.onClick();
207             }
208             return true;
209         }
210 
211     }
212     private float temp_x,temp_y;
213     @Override
214     public boolean onTouchEvent(MotionEvent event) {
215         if(temp_x != 0 && temp_y != 0){
216             float xx = Math.abs(event.getX(0) - event.getX(1))
217                     - Math.abs(temp_x);
218             float yy = Math.abs(event.getY(0) - event.getY(1))
219                     - Math.abs(temp_y);
220             float t = 0;
221             t = Math.abs(xx) > Math.abs(yy)?xx:yy;
222             if(t != 0){
223                 if(t > 0){
224                     offset += Math.abs(t) / 500;
225                 } else {
226                     offset -= Math.abs(t) / 500;
227                 }
228                 if(bitmap_map.getWidth()*offset > view_W/2 || bitmap_map.getHeight()*offset > view_H/2){
229                     
230                     draw();
231                 }
232             }
233         }
234         temp_x = event.getX(0) - event.getX(1);
235         temp_y = event.getY(0) - event.getY(1);
236         return super.onTouchEvent(event);
237     }
238     
239     public void setDegree(float degree){
240         myPosition_degree = degree;
241         draw();
242     }
243 
244 
245     private OnMyClickLinster clickLinster;
246     
247     
248     
249     public void setClickLinster(OnMyClickLinster clickLinster) {
250         this.clickLinster = clickLinster;
251     }
252 
253     public interface OnMyClickLinster{
254         public void onClick();
255     }
256 }

代码中红色标记为关键代码，主要目的是向外提供一个该MapView可供用户点击的公共接口。

然后贴出测试代码：

 1 package com.cn.gordon.exhibition.walk.activity;
 2 
 3 import com.cn.gordon.exhibition.walk.view.MapView;
 4 
 5 import android.app.Activity;
 6 import android.graphics.BitmapFactory;
 7 import android.os.Bundle;
 8 import android.widget.Toast;
 9 
10 public class ForumArrangementActivity extends Activity {
11     /** Called when the activity is first created. */
12     private MapView wallpaper;
13     //LinearLayout linearLayout;
14     @Override
15     public void onCreate(Bundle savedInstanceState) {
16         super.onCreate(savedInstanceState);
17         setContentView(R.layout.mymap);
18         super.onCreate(savedInstanceState);
19         wallpaper = (MapView)super.findViewById(R.id.mymap); 
20         wallpaper.setMap(BitmapFactory.decodeResource(getResources(), R.drawable.map));
21         wallpaper.setFocusable(true);
22         wallpaper.setFocusableInTouchMode(true);
23         wallpaper.setClickLinster(new MapView.OnMyClickLinster() {
24             
25             @Override
26             public void onClick() {
27                 Toast.makeText(ForumArrangementActivity.this, "haha ", Toast.LENGTH_SHORT).show();
28             }
29         });
30     }
31 }

当然，还有mymap的布局文件。

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="#FFFFFFFF" >

        <RelativeLayout
            android:id="@+id/temp_relative"
            android:layout_width="match_parent"
            android:layout_height="50dip"
            android:layout_alignParentTop="true"
            android:background="#FF333333" >
              
           <Button 
               android:id="@+id/title_information"
               android:layout_width="wrap_content"
               android:layout_height="wrap_content"
               android:layout_centerInParent="true"
               android:background="#00FFFFFF"
               android:text="@string/walk_exhibition"
               android:textColor="#FFFFFFFF"
               android:textSize="20sp"/>
        <TextView
            android:id="@+id/titlebar_information"
            android:layout_width="18dip"
            android:layout_height="18dip"
            android:layout_toRightOf="@id/title_information"
            android:background="@drawable/title_notifybar"
            android:layout_marginTop="5dip"
            android:text="@string/information_count"
            android:textColor="#FFFFFFFF"
            android:textSize="12sp" 
            android:gravity="center"/>

            <Button
                android:layout_width="80dip"
                android:layout_height="50dip"
                android:id="@+id/btn_menu"
                android:background="@drawable/menu_btn_bg"
                 />
            <Button
                android:layout_width="30dip"
                android:layout_height="30dip"
                android:id="@+id/btn_submenu_information"
                android:layout_centerVertical="true"
                android:layout_alignParentRight="true"
                android:layout_marginRight="20dip"
                android:background="@drawable/querybtn_pressed_bg" />
        </RelativeLayout>
        
        
        
        <LinearLayout 
            android:layout_width="match_parent"
            android:layout_height="50dip"
            android:orientation="vertical"
            android:id="@+id/temp_linearlayout"
            android:layout_alignParentBottom="true"
            android:background="#FF5c5c5c">
            <LinearLayout 
                android:layout_width="match_parent"
                android:layout_height="25dip"
                android:orientation="horizontal"
                android:baselineAligned="false" 
                android:id="@+id/map_layout1">
                <LinearLayout 
                    android:layout_width="0dip"
                    android:layout_height="25dip"
                    android:gravity="center_vertical"
                    android:layout_weight="1">
                    <TextView 
                        android:layout_width="10dip"
                        android:layout_height="10dip"
                        android:layout_marginLeft="10dip"
                        android:background="@drawable/walk_pointer"
                        />
                    <TextView 
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:layout_marginLeft="5dip"
                        android:text="@string/walk_whereiam"
                        android:textSize="12sp"
                        android:textColor="@color/blue"/>
                </LinearLayout>
                <LinearLayout 
                    android:layout_width="0dip"
                    android:layout_height="30dip"
                    android:gravity="center_vertical"
                    android:layout_weight="1">
                        <TextView 
                        android:layout_width="10dip"
                        android:layout_height="10dip"
                        android:layout_marginLeft="10dip"
                        android:background="@drawable/walk_havewalked"
                        />
                    <TextView 
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:layout_marginLeft="5dip"
                        android:text="@string/walk_havewalked"
                        android:textSize="12sp"
                        android:textColor="@color/blue"/>
                </LinearLayout>
                <LinearLayout 
                    android:layout_width="0dip"
                    android:layout_height="30dip"
                    android:gravity="center_vertical"
                    android:layout_weight="1">
                        <TextView 
                        android:layout_width="10dip"
                        android:layout_height="10dip"
                        android:layout_marginLeft="10dip"
                        android:background="@drawable/walk_togo"
                        />
                    <TextView 
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:layout_marginLeft="5dip"
                        android:text="@string/walk_togo"
                        android:textSize="12sp"
                        android:textColor="@color/blue"/>
                </LinearLayout>
                <LinearLayout 
                    android:layout_width="0dip"
                    android:layout_height="30dip"
                    android:gravity="center_vertical"
                    android:layout_weight="1">
                        <TextView 
                        android:layout_width="10dip"
                        android:layout_height="10dip"
                        android:layout_marginLeft="10dip"
                        android:background="@drawable/title_notifybar"
                        />
                    <TextView 
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:layout_marginLeft="5dip"
                        android:text="@string/walk_information"
                        android:textSize="12sp"
                        android:textColor="@color/blue"/>
                </LinearLayout>
            </LinearLayout>
            <LinearLayout 
                android:layout_width="match_parent"
                android:layout_height="25dip"
                android:baselineAligned="false"
                android:orientation="horizontal"
                android:gravity="center_vertical"
                android:id="@+id/map_layout2">
                    <LinearLayout 
                    android:layout_width="0dip"
                    android:layout_height="25dip"
                    android:gravity="center_vertical"
                    android:layout_weight="1">
                    <TextView 
                        android:layout_width="10dip"
                        android:layout_height="10dip"
                        android:layout_marginLeft="10dip"
                        android:background="@drawable/btn_queryresult"
                        />
                    <TextView 
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:layout_marginLeft="5dip"
                        android:text="@string/walk_query"
                        android:textSize="12sp"
                        android:textColor="@color/blue"/>
                </LinearLayout>
                <LinearLayout 
                    android:layout_width="0dip"
                    android:layout_height="30dip"
                    android:gravity="center_vertical"
                    android:layout_weight="1">
                        <TextView 
                        android:layout_width="10dip"
                        android:layout_height="10dip"
                        android:layout_marginLeft="10dip"
                        android:background="@drawable/walk_lots"
                        />
                    <TextView 
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:layout_marginLeft="5dip"
                        android:text="@string/walk_lots"
                        android:textSize="12sp"
                        android:textColor="@color/blue"/>
                </LinearLayout>
                <LinearLayout 
                    android:layout_width="0dip"
                    android:layout_height="30dip"
                    android:gravity="center_vertical"
                    android:layout_weight="1">
                        <TextView 
                        android:layout_width="10dip"
                        android:layout_height="10dip"
                        android:layout_marginLeft="10dip"
                        android:background="@drawable/walk_many"
                        />
                    <TextView 
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:layout_marginLeft="5dip"
                        android:text="@string/walk_many"
                        android:textSize="12sp"
                        android:textColor="@color/blue"/>
                </LinearLayout>
                <LinearLayout 
                    android:layout_width="0dip"
                    android:layout_height="30dip"
                    android:gravity="center_vertical"
                    android:layout_weight="1">
                        <TextView 
                        android:layout_width="10dip"
                        android:layout_height="10dip"
                        android:layout_marginLeft="10dip"
                        android:background="@drawable/walk_little"
                        />
                    <TextView 
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:layout_marginLeft="5dip"
                        android:text="@string/walk_little"
                        android:textSize="12sp"
                        android:textColor="@color/blue"/>
                </LinearLayout>
            </LinearLayout>
        </LinearLayout>
        <com.cn.gordon.exhibition.walk.view.MapView
            android:id="@+id/mymap"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_centerInParent="true"
            android:layout_below="@+id/temp_relative"
            android:layout_above="@+id/temp_linearlayout"
            android:orientation="vertical"
            android:visibility="visible" >

        </com.cn.gordon.exhibition.walk.view.MapView>
</RelativeLayout>

surfaceview的点击事件可以实现了，在这里的代码是测试代码。

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原文地址：https://www.cnblogs.com/SeawinLong/p/4021931.html