对于Android的裁剪图像preVIEW例子 [英] android image preview example for cropping

问题描述

许多应用，如Facebook，有这个功能，其中后一个用户选择从他们的设备的画廊图像，用户再运到preVIEW在那里他们可以选择自己的形象的一个播种的版本。通过SO（例如<一细算href=\"http://stackoverflow.com/questions/11626869/how-to-crop-image-on-camera-$p$pview-goggles-style-android\">How在摄像头preVIEW＆QUOT作物图像;护目镜风格＆QUOT; - Android的），我发现的此链接方式的例子，但压缩似乎是销售（相机preview.zip ）。由于该职位是有点老了，我想知道，如果有人知道另一个例子在那里，或者如果他们知道该怎么做，请分享你的知识。谢谢你。

Many apps, such as Facebook, have this feature where after a user chooses an image from their device's gallery, the user is then brought to a preview where they can choose a cropped version of their image. After looking through SO (e.g. How to crop image on camera preview "Goggles style" - Android), I found this link to a an example, but the zip seems to be for sale (CameraPreview.zip). Since that post is a bit old, I was wondering if someone is aware of another example out there or if they know how to do it, please share your knowledge. Thanks.

推荐答案

试试下面的code，更改参数按您的要求：

Try the below code, change the parameters as per your requirements:

Intent cropIntent = new Intent("com.android.camera.action.CROP");
//indicate image type and Uri
cropIntent.setDataAndType(fileUri, "image/*");
//set crop properties
//cropIntent.putExtra("crop", "true");
//indicate aspect of desired crop
cropIntent.putExtra("aspectX", 1);
cropIntent.putExtra("aspectY", 1);

//indicate output X and Y
cropIntent.putExtra("outputX", 350);
cropIntent.putExtra("outputY", 350);
//retrieve data on return
//cropIntent.putExtra("return-data", true);
// some code to retriev an valid Uri
cropUri =  Uri.fromFile(getOutputMediaFile(MEDIA_TYPE_IMAGE));
 cropIntent.putExtra(MediaStore.EXTRA_OUTPUT, cropUri);
//start the activity - we handle returning in onActivityResult
startActivityForResult(cropIntent, CROP_REQ_CODE);

和可以使用的onActivityResult得到输出（）

and you can get the output using in OnActivityResult()

Bundle extras = data.getExtras();
//get the cropped bitmap
clickedPhoto = extras.getParcelable("data");

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