android - 圆形裁剪而不是矩形裁剪

Question

我知道如何创建一个圆形位图，如以下示例所示

Crop square image to circle - Programmatically

Cropping circular area from bitmap in Android

在上面的例子中，如何使图像适合圆形 View ，， 我搜索了很多，发现很大的是 ,,,,, 在大多数代码中，他们一直在使用以下函数来裁剪图像

 private void performCrop() 
 {
  // take care of exceptions
  try {
   // call the standard crop action intent (the user device may not
   // support it)
   Intent cropIntent = new Intent("com.android.camera.action.CROP");
   // indicate image type and Uri
   cropIntent.setDataAndType(picUri, "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", 256);
   cropIntent.putExtra("outputY", 256);
   // retrieve data on return
   cropIntent.putExtra("return-data", true);
   // start the activity - we handle returning in onActivityResult
   startActivityForResult(cropIntent, PIC_CROP);
  }
  // respond to users whose devices do not support the crop action
  catch (ActivityNotFoundException anfe) {
   // display an error message
   String errorMessage = "Whoops - your device doesn't support the crop action!";
   Toast toast = Toast
     .makeText(this, errorMessage, Toast.LENGTH_SHORT);
   toast.show();
  }
 }

其实矩形裁剪是通过上面的代码实现的,,,我想用上面的函数进行圆形裁剪,,,请大家帮忙,,,

Answer 1

您可以查看类似链接 Cirular Crop

尝试如下圆形裁剪:

image/* crop 的 Exta 选项表:

 SetExtra   DataType   Description     

   crop     String  Signals the crop feature
  aspectX   int Aspect Ratio
  aspectY   int Aspect Ratio
  outputX   int width of output created from this Intent
  outputY   int width of output created from this Intent
  scale     boolean     should it scale
  return-data   boolean Return the bitmap with Action=inline-data by using the data
  data  Parcelable  Bitmap to process, you may provide it a bitmap (not tested)
  circleCrop    String  if this string is not null, it will provide some circular cr
  MediaStore.EXTRA_OUTPUT ("output")    URI Set this URi to a File:///, see example code

 try {
// Launch picker to choose photo for selected contact
Intent intent = new Intent(Intent.ACTION_GET_CONTENT, null);
intent.setType("image/*");
intent.putExtra("crop", "true");
intent.putExtra("aspectX", aspectX);
intent.putExtra("aspectY", aspectY);
intent.putExtra("outputX", outputX);
intent.putExtra("outputY", outputY);
intent.putExtra("scale", scale);
intent.putExtra("return-data", return_data);
intent.putExtra(MediaStore.EXTRA_OUTPUT, getTempUri());
intent.putExtra("outputFormat", Bitmap.CompressFormat.JPEG.toString());
intent.putExtra("noFaceDetection",!faceDetection); // lol, negative boolean noFaceDetection

if (circleCrop) {
intent.putExtra("circleCrop", true);
}

 startActivityForResult(intent, PHOTO_PICKED);
} catch (ActivityNotFoundException e) {
Toast.makeText(thiz, R.string.photoPickerNotFoundText, Toast.LENGTH_LONG).show();
}

我从HERE找到的