Question

我正在解雇此意图时显示标准图像选择（来自SD卡）对话框：

Intent intent = new Intent();
intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(Intent.createChooser(intent, "Select Picture"), PICK_IMAGE);

列出了可以返回图像的所有应用程序/活动（例如图库）。

在同一标准列表中，我还想要包含一个选项，该选项将启动相机并返回使用它拍摄的图像。问题是我无法弄清楚如何以非自定义方式执行此操作（使用自定义布局，应用程序图像+标题等构建我自己的对话框）。

可以像这样启动Camera活动：

Intent camera = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
URI pictureUri = Uri.fromFile(new File("dummyPath"));
camera.putExtra(MediaStore.EXTRA_OUTPUT, pictureUri);

是否有意图允许我从SD卡或使用相机拍摄的图像中选择图像？

更新：我找到了解决方案，会仔细检查并在此后发布。

Answer 1

您可以设置警告对话框以显示选项。源代码如下：

AlertDialog.Builder getImageFrom = new AlertDialog.Builder(MainActivity.this);
            getImageFrom.setTitle("Select Image");
            final CharSequence[] opsChars = {"Take Picture", "Open Gallery"};
            getImageFrom.setItems(opsChars, new android.content.DialogInterface.OnClickListener(){
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    if(which == 0){
                         File file = new File( _path );
                         outputFileUri = Uri.fromFile( file );

                        Intent cameraIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
                        cameraIntent.putExtra(MediaStore.EXTRA_VIDEO_QUALITY, 1);   

                        startActivityForResult(cameraIntent, 7);
                    }else
                        if(which == 1){
                            Intent intent = new Intent();
                            intent.setType("image/*");
                            intent.setAction(Intent.ACTION_GET_CONTENT);
                            startActivityForResult(Intent.createChooser(intent,
                                "Open Gallery"), 6);
                        }
                    dialog.dismiss();
                }
            });


    public void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (resultCode == RESULT_OK) {
        if (requestCode == 6) {
            Uri selectedImageUri = data.getData();
         pickerImageView.setPadding(0, 0, 0, 0);
         pickerImageView.setScaleType(ScaleType.FIT_XY);
         System.gc();
           String filepath = getPath(selectedImageUri);
           File imagefile = new File(filepath);
           try {
            FileInputStream fis = new FileInputStream(imagefile);
            BitmapFactory.Options options=new BitmapFactory.Options();
            options.inPurgeable=true;
            options.inSampleSize =4;
            bi= BitmapFactory.decodeStream(fis,null,options);
            fis.close();
            Bitmap bitmapToRecycle = ((BitmapDrawable)pickerImageView.getDrawable()).getBitmap();  
            bitmapToRecycle.recycle();
            pickerImageView.setImageBitmap(bi); 
            pickerImageView.setPadding(0, 0, 0, 0);
            pickerImageView.setScaleType(ScaleType.FIT_XY);


        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
           pickImageTextView.setText("");
        }
        else if(requestCode == 7){
            Log.i("return", "#####");
            BitmapFactory.Options options=new BitmapFactory.Options();
            options.inPurgeable=true;
            options.inSampleSize =4;
            //Bitmap photo = BitmapFactory.decodeFile( _path, options );
             Bitmap photo = (Bitmap) data.getExtras().get("data"); 
             pickerImageView.setImageBitmap(photo); 
             pickerImageView.setPadding(0, 0, 0, 0);
             pickerImageView.setScaleType(ScaleType.FIT_XY);

        } 
    }
}

Answer 2

您可以通过编程方式将图片添加到图库：

Intent media = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);

// mCurrentPhotoPath是图像的路径。

File f = new File(mCurrentPhotoPath);
Uri contentUri = Uri.fromFile(f);
media.setData(contentUri);
this.sendBroadcast(media);

从SD卡和相机获取图片

2 个答案: