捕获 Google Map Android API V2 的屏幕截图
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【中文标题】捕获 Google Map Android API V2 的屏幕截图【英文标题】:Capture screen shot of GoogleMap Android API V2 【发布时间】:2012-11-26 06:07:44 【问题描述】:最终更新
Google 已满足功能请求。请看this answer below.
原始问题
使用旧版本的 Google Maps android API,我能够截取谷歌地图的屏幕截图以通过社交媒体分享。我使用以下代码捕获屏幕截图并将图像保存到文件中,效果很好:
public String captureScreen()
String storageState = Environment.getExternalStorageState();
Log.d("StorageState", "Storage state is: " + storageState);
// image naming and path to include sd card appending name you choose for file
String mPath = this.getFilesDir().getAbsolutePath();
// create bitmap screen capture
Bitmap bitmap;
View v1 = this.mapView.getRootView();
v1.setDrawingCacheEnabled(true);
bitmap = Bitmap.createBitmap(v1.getDrawingCache());
v1.setDrawingCacheEnabled(false);
OutputStream fout = null;
String filePath = System.currentTimeMillis() + ".jpeg";
try
fout = openFileOutput(filePath,
MODE_WORLD_READABLE);
// Write the string to the file
bitmap.compress(Bitmap.CompressFormat.JPEG, 90, fout);
fout.flush();
fout.close();
catch (FileNotFoundException e)
// TODO Auto-generated catch block
Log.d("ImageCapture", "FileNotFoundException");
Log.d("ImageCapture", e.getMessage());
filePath = "";
catch (IOException e)
// TODO Auto-generated catch block
Log.d("ImageCapture", "IOException");
Log.d("ImageCapture", e.getMessage());
filePath = "";
return filePath;
但是,API V2 使用的新 GoogleMap 对象没有 MapView 那样的“getRootView()”方法。
我尝试过这样做:
SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager()
.findFragmentById(R.id.basicMap);
View v1 = mapFragment.getView();
但我得到的截图没有任何地图内容,看起来像这样:
有人知道如何截取新的 Google Maps Android API V2 的屏幕截图吗?
更新
我也试过这样获取rootView:
View v1 = getWindow().getDecorView().getRootView();
这会生成一个屏幕截图,其中包含屏幕顶部的操作栏,但地图仍然是空白的,就像我附上的屏幕截图一样。
更新
功能请求已提交给 Google。如果您希望 Google 将来添加此功能请求,请为功能请求添加星标:Add screenshot ability to Google Maps API V2
【问题讨论】:
现在他们使用向量是我在某些地方读到的。不知道该怎么做 【参考方案1】:使用mapcalback获取地图截图
GoogleMap.SnapshotReadyCallback callback = new GoogleMap.SnapshotReadyCallback()
Bitmap bitmap=null;
@Override
public void onSnapshotReady(Bitmap snapshot)
// TODO Auto-generated method stub
bitmap = snapshot;
try
saveImage(bitmap);
Toast.makeText(getActivity().getApplicationContext(), "Successful.Screenshot Saved.", Toast.LENGTH_LONG).show();
catch (Exception e)
e.printStackTrace();
private void saveImage(Bitmap bitmap) throws IOException
ByteArrayOutputStream bytes = new ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.JPEG, 100, bytes);
Date date = new Date();
CharSequence format = android.text.format.DateFormat.format("yyyy-MM-dd_hh:mm:ss", date);
String dirpath = Environment.getExternalStorageDirectory() + "";
File file = new File(dirpath);
if (!file.exists())
boolean mkdir = file.mkdir();
String path1 = dirpath + "/Documents/SCREENSHOT/";
File imageurl1 = new File(path1);
imageurl1.mkdirs();
File f = new File(path1 +"/"+ format + ".png");
f.createNewFile();
FileOutputStream fo = new FileOutputStream(f);
fo.write(bytes.toByteArray());
fo.close();
;
mMap.snapshot(callback);
【讨论】:
您的答案可以通过额外的支持信息得到改进。请edit 添加更多详细信息,例如引用或文档,以便其他人可以确认您的答案是正确的。你可以找到更多关于如何写好答案的信息in the help center。【参考方案2】:我截取了地图截图,会有帮助的
private GoogleMap map;
private static LatLng latLong;
`
public void onMapReady(GoogleMap googleMap)
map = googleMap;
setMap(this.map);
animateCamera();
map.moveCamera (CameraUpdateFactory.newLatLng (latLong));
map.setOnMapLoadedCallback (new GoogleMap.OnMapLoadedCallback ()
@Override
public void onMapLoaded()
snapShot();
);
`
snapShot() 方法截取地图
public void snapShot()
GoogleMap.SnapshotReadyCallback callback=new GoogleMap.SnapshotReadyCallback ()
Bitmap bitmap;
@Override
public void onSnapshotReady(Bitmap snapshot)
bitmap=snapshot;
try
file=new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES),"map.png");
FileOutputStream fout=new FileOutputStream (file);
bitmap.compress (Bitmap.CompressFormat.PNG,90,fout);
Toast.makeText (PastValuations.this, "Capture", Toast.LENGTH_SHORT).show ();
catch (Exception e)
e.printStackTrace ();
Toast.makeText (PastValuations.this, "Not Capture", Toast.LENGTH_SHORT).show ();
;map.snapshot (callback);
我的输出低于
【讨论】:
这很好,它正在将图片保存在图片文件夹中..【参考方案3】:private GoogleMap mMap;
SupportMapFragment mapFragment;
LinearLayout linearLayout;
String jobId="1";
文件文件;
@Override
protected void onCreate(Bundle savedInstanceState)
super.onCreate (savedInstanceState);
setContentView (R.layout.activity_maps);
linearLayout=(LinearLayout)findViewById (R.id.linearlayout);
// Obtain the SupportMapFragment and get notified when the map is ready to be used.
mapFragment = (SupportMapFragment)getSupportFragmentManager ()
.findFragmentById (R.id.map);
mapFragment.getMapAsync (this);
//Taking Snapshot of Google Map
/**
* Manipulates the map once available.
* This callback is triggered when the map is ready to be used.
* This is where we can add markers or lines, add listeners or move the camera. In this case,
* we just add a marker near Sydney, Australia.
* If Google Play services is not installed on the device, the user will be prompted to install
* it inside the SupportMapFragment. This method will only be triggered once the user has
* installed Google Play services and returned to the app.
*/
@Override
public void onMapReady(GoogleMap googleMap)
mMap = googleMap;
// Add a marker in Sydney and move the camera
LatLng sydney = new LatLng (-26.888033, 75.802754);
mMap.addMarker (new MarkerOptions ().position (sydney).title ("Kailash Tower"));
mMap.moveCamera (CameraUpdateFactory.newLatLng (sydney));
mMap.setOnMapLoadedCallback (new GoogleMap.OnMapLoadedCallback ()
@Override
public void onMapLoaded()
snapShot();
);
// Initializing Snapshot Method
public void snapShot()
GoogleMap.SnapshotReadyCallback callback=new GoogleMap.SnapshotReadyCallback ()
Bitmap bitmap;
@Override
public void onSnapshotReady(Bitmap snapshot)
bitmap=snapshot;
bitmap=getBitmapFromView(linearLayout);
try
file=new File (getExternalCacheDir (),"map.png");
FileOutputStream fout=new FileOutputStream (file);
bitmap.compress (Bitmap.CompressFormat.PNG,90,fout);
Toast.makeText (MapsActivity.this, "Capture", Toast.LENGTH_SHORT).show ();
sendSceenShot (file);
catch (Exception e)
e.printStackTrace ();
Toast.makeText (MapsActivity.this, "Not Capture", Toast.LENGTH_SHORT).show ();
;mMap.snapshot (callback);
private Bitmap getBitmapFromView(View view)
Bitmap returnedBitmap = Bitmap.createBitmap(view.getWidth(), view.getHeight(),Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas (returnedBitmap);
Drawable bgDrawable =view.getBackground();
if (bgDrawable!=null)
//has background drawable, then draw it on the canvas
bgDrawable.draw(canvas);
else
//does not have background drawable, then draw white background on the canvas
canvas.drawColor(Color.WHITE);
view.draw(canvas);
return returnedBitmap;
//Implementing Api using Retrofit
private void sendSceenShot(File file)
RequestBody job=null;
Gson gson = new GsonBuilder ()
.setLenient ()
.create ();
Retrofit retrofit = new Retrofit.Builder ()
.baseUrl (BaseUrl.url)
.addConverterFactory (GsonConverterFactory.create (gson))
.build ();
final RequestBody requestBody = RequestBody.create (MediaType.parse ("image/*"),file);
job=RequestBody.create (MediaType.parse ("text"),jobId);
MultipartBody.Part fileToUpload = MultipartBody.Part.createFormData ("name",file.getName (), requestBody);
API service = retrofit.create (API.class);
Call<ScreenCapture_Pojo> call=service.sendScreen (job,fileToUpload);
call.enqueue (new Callback<ScreenCapture_Pojo> ()
@Override
public void onResponse(Call <ScreenCapture_Pojo> call, Response<ScreenCapture_Pojo> response)
if (response.body ().getMessage ().equalsIgnoreCase ("Success"))
Toast.makeText (MapsActivity.this, "success", Toast.LENGTH_SHORT).show ();
@Override
public void onFailure(Call <ScreenCapture_Pojo> call, Throwable t)
);
【讨论】:
你好,成功的代码。 我希望这将有助于捕获您的地图的屏幕截图,并且您可以使用改造在服务器上发送而无需保存到外部存储中。请发表评论。 截图示例,然后呈现标准的“图像发送。这个完整的源代码。请订阅我的页面。 如果特定视图包含 ImageView、TextView 和 mapView(都带有值),我会截屏吗?【参考方案4】:我希望这将有助于捕获您的地图的屏幕截图
方法调用:
gmap.setOnMapLoadedCallback(mapLoadedCallback);
方法声明:
final SnapshotReadyCallback snapReadyCallback = new SnapshotReadyCallback()
Bitmap bitmap;
@Override
public void onSnapshotReady(Bitmap snapshot)
bitmap = snapshot;
try
//do something with your snapshot
imageview.setImageBitmap(bitmap);
catch (Exception e)
e.printStackTrace();
;
GoogleMap.OnMapLoadedCallback mapLoadedCallback = new GoogleMap.OnMapLoadedCallback()
@Override
public void onMapLoaded()
gmap.snapshot(snapReadyCallback);
;
【讨论】:
【参考方案5】:由于投票最多的答案不适用于地图片段顶部的折线和其他叠加层(我在寻找什么),我想分享这个解决方案。
public void captureScreen()
GoogleMap.SnapshotReadyCallback callback = new GoogleMap.SnapshotReadyCallback()
@Override
public void onSnapshotReady(Bitmap snapshot)
try
getWindow().getDecorView().findViewById(android.R.id.content).setDrawingCacheEnabled(true);
Bitmap backBitmap = getWindow().getDecorView().findViewById(android.R.id.content).getDrawingCache();
Bitmap bmOverlay = Bitmap.createBitmap(
backBitmap.getWidth(), backBitmap.getHeight(),
backBitmap.getConfig());
Canvas canvas = new Canvas(bmOverlay);
canvas.drawBitmap(snapshot, new Matrix(), null);
canvas.drawBitmap(backBitmap, 0, 0, null);
OutputStream fout = null;
String filePath = System.currentTimeMillis() + ".jpeg";
try
fout = openFileOutput(filePath,
MODE_WORLD_READABLE);
// Write the string to the file
bmOverlay.compress(Bitmap.CompressFormat.JPEG, 90, fout);
fout.flush();
fout.close();
catch (FileNotFoundException e)
// TODO Auto-generated catch block
Log.d("ImageCapture", "FileNotFoundException");
Log.d("ImageCapture", e.getMessage());
filePath = "";
catch (IOException e)
// TODO Auto-generated catch block
Log.d("ImageCapture", "IOException");
Log.d("ImageCapture", e.getMessage());
filePath = "";
openShareImageDialog(filePath);
catch (Exception e)
e.printStackTrace();
;
;
map.snapshot(callback);
【讨论】:
公认的答案绝对适用于折线和叠加层——这就是共享地图图像的全部意义所在,因为我画了一堆折线、标记和叠加层,并想捕捉它。您将折线添加到地图的方式可能存在问题?【参考方案6】:编辑:此答案不再有效 - Google Maps Android API V2 上的屏幕截图功能请求已得到满足。见this answer for an example。
接受的原始答案
由于新的 Android API v2 地图使用 OpenGL 显示,因此无法创建屏幕截图。
【讨论】:
你能引用这个答案的来源吗? 我主要从官方API docs得到这个,另外还有this post 我见过这样的问题:***.com/questions/3310990/… 不过,这似乎表明可以截取 OpenGL 层的屏幕截图......虽然我对 OpenGL 几乎一无所知,所以这就是为什么我我正在寻求帮助... 问题是用于显示地图的OpenGL SurfaceView通过MapView/MapFragment被黑盒化掉了... 您可以为以下功能请求点赞/加注星标,以便 Google 在 API 中添加屏幕截图支持:code.google.com/p/gmaps-api-issues/issues/detail?id=4898【参考方案7】:更新 - Google 添加了快照方法**!:
对获取 Android Google Map API V2 OpenGL 层屏幕截图的方法的功能请求已完成。
要截屏,只需实现以下接口:
public abstract void onSnapshotReady (Bitmap snapshot)
然后调用:
public final void snapshot (GoogleMap.SnapshotReadyCallback callback)
截取屏幕截图,然后显示标准“图像共享”选项的示例:
public void captureScreen()
SnapshotReadyCallback callback = new SnapshotReadyCallback()
@Override
public void onSnapshotReady(Bitmap snapshot)
// TODO Auto-generated method stub
bitmap = snapshot;
OutputStream fout = null;
String filePath = System.currentTimeMillis() + ".jpeg";
try
fout = openFileOutput(filePath,
MODE_WORLD_READABLE);
// Write the string to the file
bitmap.compress(Bitmap.CompressFormat.JPEG, 90, fout);
fout.flush();
fout.close();
catch (FileNotFoundException e)
// TODO Auto-generated catch block
Log.d("ImageCapture", "FileNotFoundException");
Log.d("ImageCapture", e.getMessage());
filePath = "";
catch (IOException e)
// TODO Auto-generated catch block
Log.d("ImageCapture", "IOException");
Log.d("ImageCapture", e.getMessage());
filePath = "";
openShareImageDialog(filePath);
;
mMap.snapshot(callback);
图像捕获完成后,它将触发标准的“共享图像”对话框,以便用户选择他们想要共享的方式:
public void openShareImageDialog(String filePath)
File file = this.getFileStreamPath(filePath);
if(!filePath.equals(""))
final ContentValues values = new ContentValues(2);
values.put(MediaStore.Images.Media.MIME_TYPE, "image/jpeg");
values.put(MediaStore.Images.Media.DATA, file.getAbsolutePath());
final Uri contentUriFile = getContentResolver().insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, values);
final Intent intent = new Intent(android.content.Intent.ACTION_SEND);
intent.setType("image/jpeg");
intent.putExtra(android.content.Intent.EXTRA_STREAM, contentUriFile);
startActivity(Intent.createChooser(intent, "Share Image"));
else
//This is a custom class I use to show dialogs...simply replace this with whatever you want to show an error message, Toast, etc.
DialogUtilities.showOkDialogWithText(this, R.string.shareImageFailed);
文档是here
【讨论】:
你能举个例子吗! @David - 提供示例。 嗨@DiscDev,这段代码非常有用。但我想要一个解决方案:假设有一个包含地图和一些 UI 组件的活动。见:i57.tinypic.com/iglyef.png 现在我需要一张截图。这个怎么做 ?提前致谢 @Vrajesh - 我看不到你的图片,但我认为你不能捕捉地图中没有的 UI 元素......我认为你必须做的是捕获地图图像,然后分别捕获整个屏幕(整个屏幕捕获时地图将是空白的),然后稍后通过一些代码将 2 个图像重新组合在一起。 @Disc 开发。谢谢你的答复...!你说的对。我必须做两个单独的图像来截屏。一个用于整个屏幕,第二个仅显示地图。然后合并它们。这里有点混乱..!我怎样才能做到这一点 ?你有这样做的一些想法或参考..?更新图片位置 :: s13.postimg.org/5r99pibx3/test.png【参考方案8】:以下是通过示例捕获 Google Map V2 屏幕截图的步骤
第一步打开Android Sdk Manager (Window > Android Sdk Manager)
然后Expand Extras
现在update/install Google Play Services to Revision 10
如果已经installed
忽略这一步
在此处阅读注释https://developers.google.com/maps/documentation/android/releases#august_2013
第 2 步。 Restart Eclipse
第 3 步。 import com.google.android.gms.maps.GoogleMap.SnapshotReadyCallback;
步骤 4. 制作方法来捕获/存储地图的屏幕/图像,如下所示
public void CaptureMapScreen()
SnapshotReadyCallback callback = new SnapshotReadyCallback()
Bitmap bitmap;
@Override
public void onSnapshotReady(Bitmap snapshot)
// TODO Auto-generated method stub
bitmap = snapshot;
try
FileOutputStream out = new FileOutputStream("/mnt/sdcard/"
+ "MyMapScreen" + System.currentTimeMillis()
+ ".png");
// above "/mnt ..... png" => is a storage path (where image will be stored) + name of image you can customize as per your Requirement
bitmap.compress(Bitmap.CompressFormat.PNG, 90, out);
catch (Exception e)
e.printStackTrace();
;
myMap.snapshot(callback);
// myMap is object of GoogleMap +> GoogleMap myMap;
// which is initialized in onCreate() =>
// myMap = ((SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map_pass_home_call)).getMap();
第 5 步。 现在在您要捕获图像的位置调用此 CaptureMapScreen()
方法
在我的情况下,我是 calling this method on Button click in my onCreate()
,它工作正常
喜欢:
Button btnCap = (Button) findViewById(R.id.btnTakeScreenshot);
btnCap.setOnClickListener(new OnClickListener()
@Override
public void onClick(View v)
// TODO Auto-generated method stub
try
CaptureMapScreen();
catch (Exception e)
// TODO: handle exception
e.printStackTrace();
);
检查文档here和here
【讨论】:
我知道这是一个很老的帖子,但我有一个类似的问题,想看看你是否可以帮助解决它。我正在像这样初始化 myMap: myMap = ((MapFragment)getFragmentManager().findFragmentById(R.id.map)).getMap();我收到以下错误:txs.io/JBS,这是我拥有的 map_pass_home_call.xml 文件:txs.io/KBS。我不确定我哪里出错了。我总是收到空指针异常。【参考方案9】:即使是谷歌地图 V2,Eclipse DDMS 也可以捕获屏幕。
如果您有“root”权限,请尝试调用 /system/bin/screencap 或 /system/bin/screenshot。我从How Eclipse android DDMS implement "screen capture"了解到这一点
【讨论】:
是的,我知道这一点,但我希望能够在非根设备上以编程方式(即在代码中)截取屏幕截图。这在 Maps API for Android 的第一个版本中是可能的,但不是第二个版本(由于接受的答案中提到的原因)。 是的,这也是我的问题。但是如果谷歌地图V2似乎不可能。 DDMS 使用通过具有必要权限的进程(adb pull)提供的screencap 或screensnap android。但是普通的android应用程序没有权限(我昨天从***找到)。希望下个版本的谷歌地图能加强它。 是的,令人沮丧的是他们没有提供 OpenGL 层,但我想这与版权或安全有关。以上是关于捕获 Google Map Android API V2 的屏幕截图的主要内容,如果未能解决你的问题,请参考以下文章