Android 选择并裁剪头像

详细&来源http://www.linuxidc.com/Linux/2012-11/73940p2.htm

准备url

	try {
            //若在activity中使用 就不用getActivity（）
            String dir =getActivity().getExternalCacheDir().getAbsolutePath();
            File file = new File(dir+"/"+Config.HEAD_IMG_FILENAME);
            if (!file.exists()){
                file.createNewFile();
            }
            imageUri = Uri.fromFile(file);
        } catch (IOException e) {
            e.printStackTrace();
        } 
 
 
  
启动选择并裁剪
 
  
        Intent it = new Intent(Intent.ACTION_GET_CONTENT, null);
        it.setType("image/*");
        it.putExtra("crop", "true");
        it.putExtra("aspectX", 1);
        it.putExtra("aspectY", 1);
        it.putExtra("outputX", 128);
        it.putExtra("outputY", 128);
        //将图片保存到uri的位置 imageUri=Uri.fromFile(xxx); 
        it.putExtra(MediaStore.EXTRA_OUTPUT, imageUri);
        it.putExtra("scale", true);//黑边
        it.putExtra("scaleUpIfNeeded", true);//黑边
        it.putExtra("outputFormat", Bitmap.CompressFormat.JPEG.toString());
        it.putExtra("return-data", true);

        startActivityForResult(it,Config.CROP_IMG_CODE);
 
  
选择结束
 
  
@Override
    public void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if (requestCode == Config.CROP_IMG_CODE && data != null){
            try {
                Bitmap bitmap = BitmapFactory.decodeStream(getActivity().getContentResolver().openInputStream(imageUri))                        ivHead.setImageBitmap(bitmap);
            } catch (FileNotFoundException e) {
                e.printStackTrace();
            }

        }

    }