捕获屏幕快照GoogleMap的Android的API V2的 [英] Capture screen shot of GoogleMap Android API V2
问题描述
最后更新
该功能请求已经履行了谷歌。请参阅低于这个答案。
The feature request has been fulfilled by Google. Please see this answer below.
原始的问题
使用旧版本的谷歌地图Android的API中，我能捕捉到谷歌地图的截图通过社交媒体分享。我用下面的code捕捉屏幕截图，图像保存到一个文件和它的工作很大的：
Using the old version of the Google Maps Android API, I was able to capture a screenshot of the google map to share via social media. I used the following code to capture the screenshot and save the image to a file and it worked great:
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;
}
不过，所用的API V2新的GoogleMap对象没有一个getRootView（）方法类似图形页面一样。
However, the new GoogleMap object used by V2 of the api does not have a "getRootView()" method like MapView does.
我试图做到这一点：
SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager()
.findFragmentById(R.id.basicMap);
View v1 = mapFragment.getView();
不过，我得到没有任何地图内容和截图如下：
But the screenshot that I get does not have any map content and looks like this:
有没有人想出如何利用新的谷歌地图的Android API V2的截图？
Has anyone figured out how to take a screenshot of the new Google Maps Android API V2?
更新
我也试图让rootView这种方式：
I also tried to get the rootView this way:
View v1 = getWindow().getDecorView().getRootView();
这会导致一个截图，其中包括屏幕顶部的操作栏，但地图上仍是空白像我附上了截图。
This results in a screenshot that includes the action bar at the top of the screen, but the map is still blank like the screenshot I attached.
更新
一个功能请求已经提交给谷歌。请到明星的功能要求，如果这是你希望谷歌在将来添加的东西：的添加截屏的能力，谷歌地图API V2
A feature request has been submitted to Google. Please go star the feature request if this is something you want google to add in the future: Add screenshot ability to Google Maps API V2
推荐答案
更新 - 谷歌已经增加了一个快照方法**！：
Update - Google has added a snapshot method**!:
有关的方法采取了截屏Android的谷歌地图API V2的OpenGL层的功能要求已经得到满足。
The feature request for a method to take a screen shot of the Android Google Map API V2 OpenGL layer has been fulfilled.
要采取截图，只需实现以下接口：
To take a screenshot, simply implement the following interface:
public abstract void onSnapshotReady (Bitmap snapshot)
和调用：
公众最终无效快照（GoogleMap.SnapshotReadyCallback回调）
为例，需要一个截屏，然后presents标准的图像共享选项：
Example that takes a screenshot, then presents the standard "Image Sharing" options:
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);
}
在图像结束被抓获，它会触发标准分享图片对话框，使用户可以选择他们想如何分享它：
Once the image is finished being captured, it will trigger the standard "Share Image" dialog so the user can pick how they'd like to share it:
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<一个href="https://developers.google.com/maps/documentation/android/reference/com/google/android/gms/maps/GoogleMap.SnapshotReadyCallback">here
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