捕获GoogleMap Android API V2的屏幕截图

Question

最后更新

功能请求已由Google完成.请在下面看到这个答案.

原始问题

使用旧版Google Maps Android API,我能够捕获谷歌地图的屏幕截图,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并且效果很好:

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的V2使用的新GoogleMap对象没有像MapView那样的"getRootView()"方法.

我试着这样做:

    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:

有没有人想出如何截取新的谷歌地图Android API V2的截图？

更新

我也尝试以这种方式获取rootView:

View v1 = getWindow().getDecorView().getRootView();

这会产生一个屏幕截图,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.如果这是您希望将来谷歌添加的内容,请点击功能请求: 为Google Maps API V2添加屏幕截图功能

Answer 1

更新 - 谷歌添加了快照方法**!:

已完成针对Android Google Map API V2 OpenGL图层的屏幕截图的方法的功能请求.

要截取屏幕截图,只需实现以下界面:

public abstract void onSnapshotReady (Bitmap snapshot)

并致电:

public final void snapshot (GoogleMap.SnapshotReadyCallback callback)

截取屏幕截图的示例,然后显示标准的"图像共享"选项:

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);
    }

一旦图像完成捕获,它将触发标准的"共享图像"对话框,以便用户可以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);
}
}

文档在这里

Answer 2

以下是捕获Google Map V2屏幕截图的步骤

步骤1.打开Android Sdk Manager (Window > Android Sdk Manager)然后Expand Extras现在update/install Google Play Services to Revision 10忽略此步骤installed

在此处阅读说明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. 制作方法以捕获/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();
}

步骤5.现在调用此CaptureMapScreen()方法来捕获图像

在我的情况下,我calling this method on Button click in my onCreate()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();
            }

        }
    });

在这里 和这里检查Doc

Answer 3

我捕获了地图截图。它会有所帮助

  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() 用于截取地图截图的方法

 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