Android camera.action.CROP 没有给出一致的结果

Posted 2023-02-25

【中文标题】Android camera.action.CROP 没有给出一致的结果

【英文标题】：Android camera.action.CROP doesn't give consistent results

【发布时间】：2014-11-04 20:24:38

【问题描述】：

我正在尝试直接从图库中挑选和裁剪一张图片， 由于某种原因，裁剪意图并不总是有效，在某些设备上它与图库一起使用， 在某些设备上，它仅适用于非官方图库应用（例如我的 G2）。

我知道它应该可以在我的设备上运行，因为我有其他应用程序使用相同的图库裁剪功能及其作品。

每次我尝试使用库存图库打开意图时，我都会收到以下消息：找不到项目 （我希望用户选择图像，而不是传递特定的图像位置）

// Start a intent to get event image from the user
private void getCroppedImage()
    // Create an output directory for the image
    String timeStamp = new SimpleDateFormat("ddMMMyy_HHmmSSS").format(new Date());
    File dir = new File(Environment.getExternalStorageDirectory ()
            + File.separator
            + "MyApp/Images");

    File picPath = Environment.getExternalStoragePublicDirectory(
        Environment.DIRECTORY_PICTURES);

    File outputPath = new File(dir,"IMG_"+ timeStamp + ".jpg");

    // Make sure that the output dir exists
    if (!dir.exists())
        dir.mkdirs();
    

    // Start intent, if available
    Intent cropIntent = new Intent("com.android.camera.action.CROP");
    //cropIntent.setData(Uri.fromFile(picPath));
    cropIntent.setType("image/*");
    cropIntent.putExtra("crop", "true");
    cropIntent.putExtra("outputX", 512);
    cropIntent.putExtra("outputY", 512);
    cropIntent.putExtra("aspectX", 1);
    cropIntent.putExtra("aspectY", 1);
    cropIntent.putExtra("output", Uri.fromFile(outputPath));

    // Verify that the intent will resolve to an activity
    if (cropIntent.resolveActivity(getPackageManager()) != null) 
        startActivityForResult(cropIntent, REQUEST_CODE_CROP_IMAGE);
    else
        cropIntent.setAction(Intent.ACTION_GET_CONTENT);
        // Verify that the intent will resolve to an activity
        if (cropIntent.resolveActivity(getPackageManager()) != null) 
            startActivityForResult(cropIntent, REQUEST_CODE_GET_PICTURE);
        else
            Toast.makeText(this,"Gallery not detected",Toast.LENGTH_LONG).show();
        
    

有什么想法吗？

【参考方案1】：

试试这个：

public class CropOptionAdapter extends ArrayAdapter<CropOption> 
    private ArrayList<CropOption> mOptions;
    private LayoutInflater mInflater;

    public CropOptionAdapter(Context context, ArrayList<CropOption> options) 
        super(context, R.layout.crop_selector, options);

        mOptions = options;

        mInflater = LayoutInflater.from(context);
    

    @Override
    public View getView(int position, View convertView, ViewGroup group) 
        if (convertView == null)
            convertView = mInflater.inflate(R.layout.crop_selector, null);

        CropOption item = mOptions.get(position);

        if (item != null) 
            ((ImageView) convertView.findViewById(R.id.iv_icon))
                    .setImageDrawable(item.icon);
            ((TextView) convertView.findViewById(R.id.tv_name))
                    .setText(item.title);

            return convertView;
        

        return null;
    


public class CropOption 
    public CharSequence title;
    public Drawable icon;
    public Intent appIntent;


@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) 
    if (resultCode != RESULT_OK)
        return;

    switch (requestCode) 
    case PICK_FROM_CAMERA:
        /**
         * After taking a picture, do the crop
         */
        doCrop();

        break;

    case PICK_FROM_FILE:
        /**
         * After selecting image from files, save the selected path
         */
        mImageCaptureUri = data.getData();
        infoLog("pick from file");
        doCrop();

        break;

    case CROP_FROM_CAMERA:
        Bundle extras = data.getExtras();
        /**
         * After cropping the image, get the bitmap of the cropped image and
         * display it on imageview.
         */
        if (extras != null) 
            photo = extras.getParcelable("data");
            Bitmap circleBitmap = Bitmap.createBitmap(photo.getWidth(),
                    photo.getHeight(), Bitmap.Config.ARGB_8888);

            BitmapShader shader = new BitmapShader(photo, TileMode.CLAMP,
                    TileMode.CLAMP);
            Paint paint = new Paint();
            paint.setShader(shader);

            Canvas c = new Canvas(circleBitmap);
            c.drawCircle(photo.getWidth() / 2, photo.getHeight() / 2,
                    photo.getWidth() / 2, paint);

            img.setImageBitmap(photo);
        

        File f = new File(mImageCaptureUri.getPath());
        /**
         * Delete the temporary image
         */
        if (f.exists())
            f.delete();

        break;

    


private void doCrop() 
    final ArrayList<CropOption> cropOptions = new ArrayList<CropOption>();
    /**
     * Open image crop app by starting an intent
     * ‘com.android.camera.action.CROP‘.
     */
    Intent intent = new Intent("com.android.camera.action.CROP");
    intent.setType("image/*");

    /**
     * Check if there is image cropper app installed.
     */
    List<ResolveInfo> list = getPackageManager().queryIntentActivities(
            intent, 0);

    int size = list.size();

    /**
     * If there is no image cropper app, display warning message
     */
    if (size == 0) 
        Toast.makeText(this, "Can not find image crop app",
                Toast.LENGTH_SHORT).show();

        return;
     else 
        /**
         * Specify the image path, crop dimension and scale
         */
        intent.setData(mImageCaptureUri);

        intent.putExtra("outputX", 200);
        intent.putExtra("outputY", 200);
        intent.putExtra("aspectX", 1);
        intent.putExtra("aspectY", 1);
        intent.putExtra("scale", true);
        intent.putExtra("return-data", true);
        /**
         * There is possibility when more than one image cropper app exist,
         * so we have to check for it first. If there is only one app, open
         * then app.
         */

        if (size == 1) 
            Intent i = new Intent(intent);
            ResolveInfo res = list.get(0);

            i.setComponent(new ComponentName(res.activityInfo.packageName,
                    res.activityInfo.name));

            startActivityForResult(i, CROP_FROM_CAMERA);
         else 
            /**
             * If there are several app exist, create a custom chooser to
             * let user selects the app.
             */
            for (ResolveInfo res : list) 
                final CropOption co = new CropOption();

                co.title = getPackageManager().getApplicationLabel(
                        res.activityInfo.applicationInfo);
                co.icon = getPackageManager().getApplicationIcon(
                        res.activityInfo.applicationInfo);
                co.appIntent = new Intent(intent);

                co.appIntent
                        .setComponent(new ComponentName(
                                res.activityInfo.packageName,
                                res.activityInfo.name));

                cropOptions.add(co);
            

            CropOptionAdapter adapter = new CropOptionAdapter(
                    getApplicationContext(), cropOptions);

            AlertDialog.Builder builder = new AlertDialog.Builder(this);
            builder.setTitle("Choose Crop App");
            builder.setAdapter(adapter,
                    new DialogInterface.OnClickListener() 
                        public void onClick(DialogInterface dialog, int item) 
                            startActivityForResult(
                                    cropOptions.get(item).appIntent,
                                    CROP_FROM_CAMERA);
                        
                    );

            builder.setOnCancelListener(new DialogInterface.OnCancelListener() 
                @Override
                public void onCancel(DialogInterface dialog) 

                    if (mImageCaptureUri != null) 
                        getContentResolver().delete(mImageCaptureUri, null,
                                null);
                        mImageCaptureUri = null;
                    
                
            );

            AlertDialog alert = builder.create();

            alert.show();
        
    

【讨论】：

在这里您将图像位置传递给裁剪实例 - intent.setData(mImageCaptureUri); - 我想选择一个图像并同时裁剪它..