android - 将照片移动到应用程序内存中

问题描述

在我的 Android 应用程序中，我需要允许用户从手机的照片中选择多个图像（我已经可以这样做），然后将照片从它们当前所在的位置移动（而不是复制）到应用程序的特定数据目录中。

编辑：添加代码以供审查：

public class GalleryImagePicker extends Activity implements View.OnClickListener{
Context cntxt = Defines.contextGlobal;

private static final int DEFAULT_MIN_WIDTH_QUALITY = 400;
public static int minWidthQuality = DEFAULT_MIN_WIDTH_QUALITY;

private ArrayList<String> imagesPathList;
private ArrayList<Uri> imagesUri;

private LinearLayout lnrImages;
private Button btnAddPhotos;
private Button btnSaveImages;
private Bitmap yourbitmap;
private Bitmap resized;
private final int PICK_IMAGE_MULTIPLE = 1;
private ImageView targetImage;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.galleryimagepicker);
    lnrImages = (LinearLayout)findViewById(R.id.lnrImages);

    btnAddPhotos = (Button)findViewById(R.id.btnAddPhotos);
    btnAddPhotos.setOnClickListener(this);

    btnSaveImages = (Button)findViewById(R.id.btnSaveImages);
    btnSaveImages.setOnClickListener(this);
}

@Override
public void onClick(View view) {
    switch (view.getId()) {
        case R.id.btnAddPhotos:
            /*Intent intent = new Intent(GalleryImagePicker.this,CustomPhotoGalleryActivity.class);
            startActivityForResult(intent,PICK_IMAGE_MULTIPLE);*/
            Intent intent = new Intent(GalleryImagePicker.this,CustomPhotoGalleryActivity.class);
            intent.setType("image/*");
            intent.setAction(Intent.ACTION_GET_CONTENT);
            startActivityForResult(intent,PICK_IMAGE_MULTIPLE);
            break;

        case R.id.btnSaveImages:
            if(imagesPathList != null)
            {
                if(imagesPathList.size() >= 1) {
                    //Toast.makeText(GalleryImagePicker.this, imagesPathList.size() + " no of images are selected", Toast.LENGTH_SHORT).show();
                    String[] stringArray = imagesPathList.toArray(new String[0]);
                    for (int i = 0; i < stringArray.length; i++){
                        String ThisImgPath = stringArray[i];
                        String PicName = ThisImgPath;
                        if (SystemIOFile.exists(PicName)) {
                            BitmapFactory.Options bmOptions = new BitmapFactory.Options();
                            bmOptions.inSampleSize = 4;
                            Bitmap bm = BitmapFactory.decodeFile(ThisImgPath, bmOptions);
                            Uri ThisUri = getImageUri(cntxt, bm);
                            bm = decodeBitmap(cntxt, ThisUri, bmOptions.inSampleSize);

                            Boolean HOLD = true;
                        }

                        Boolean HOLD = true;
                    }
                }else{
                    Toast.makeText(GalleryImagePicker.this, imagesPathList.size() + " no of image are selected", Toast.LENGTH_SHORT).show();
                }
            }
            else
            {
                Toast.makeText(GalleryImagePicker.this," no images are selected", Toast.LENGTH_SHORT).show();
            }
            break;
    }
}

其他代码：

public class CustomPhotoGalleryActivity extends Activity {

private GridView grdImages;
private Button btnSelect;

private ImageAdapter imageAdapter;
private String[] arrPath;
private boolean[] thumbnailsselection;
private int ids[];
private int count;


/**
 * Overrides methods
 */
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.custom_gallery);
    grdImages = (GridView) findViewById(R.id.grdImages);
    btnSelect = (Button) findViewById(R.id.btnSelect);

    final String[] columns = { MediaStore.Images.Media.DATA, MediaStore.Images.Media._ID };
    final String orderBy = MediaStore.Images.Media._ID;
    @SuppressWarnings("deprecation")
    Cursor imagecursor = managedQuery(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, columns, null, null, orderBy);
    int image_column_index = imagecursor.getColumnIndex(MediaStore.Images.Media._ID);
    this.count = imagecursor.getCount();
    this.arrPath = new String[this.count];
    ids = new int[count];
    this.thumbnailsselection = new boolean[this.count];
    for (int i = 0; i < this.count; i++) {
        imagecursor.moveToPosition(i);
        ids[i] = imagecursor.getInt(image_column_index);
        int dataColumnIndex = imagecursor.getColumnIndex(MediaStore.Images.Media.DATA);
        arrPath[i] = imagecursor.getString(dataColumnIndex);
    }

    imageAdapter = new ImageAdapter();
    grdImages.setAdapter(imageAdapter);
    imagecursor.close();

    btnSelect.setOnClickListener(new View.OnClickListener() {

        public void onClick(View v) {
            final int len = thumbnailsselection.length;
            int cnt = 0;
            String selectImages = "";
            for (int i = 0; i < len; i++) {
                if (thumbnailsselection[i]) {
                    cnt++;
                    selectImages = selectImages + arrPath[i] + "|";
                }
            }

            if (cnt == 0) {
                Toast.makeText(getApplicationContext(), "Please select at least one image", Toast.LENGTH_LONG).show();
            } else {

                Log.d("SelectedImages", selectImages);
                Intent i = new Intent();
                i.putExtra("data", selectImages);
                setResult(Activity.RESULT_OK, i);
                finish();
            }
        }
    });
}

@Override
public void onBackPressed() {
    setResult(Activity.RESULT_CANCELED);
    super.onBackPressed();
}

/**
 * Class method
 */

/**
 * This method used to set bitmap.
 * @param iv represented ImageView 
 * @param id represented id
 */

private void setBitmap(final ImageView iv, final int id) {

    new AsyncTask<Void, Void, Bitmap>() {

        @Override
        protected Bitmap doInBackground(Void... params) {
            return MediaStore.Images.Thumbnails.getThumbnail(getApplicationContext().getContentResolver(), id, MediaStore.Images.Thumbnails.MICRO_KIND, null);
        }

        @Override
        protected void onPostExecute(Bitmap result) {
            super.onPostExecute(result);
            iv.setImageBitmap(result);
        }
    }.execute();
}


/**
 * List adapter
 * @author tasol
 */

public class ImageAdapter extends BaseAdapter {
    private LayoutInflater mInflater;

    public ImageAdapter() {
        mInflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    }

    public int getCount() {
        return count;
    }

    public Object getItem(int position) {
        return position;
    }

    public long getItemId(int position) {
        return position;
    }

    public View getView(int position, View convertView, ViewGroup parent) {
        final ViewHolder holder;
        if (convertView == null) {
            holder = new ViewHolder();
            convertView = mInflater.inflate(R.layout.custom_gallery_item, null);
            holder.imgThumb = (ImageView) convertView.findViewById(R.id.imgThumb);
            holder.chkImage = (CheckBox) convertView.findViewById(R.id.chkImage);

            convertView.setTag(holder);
        } else {
            holder = (ViewHolder) convertView.getTag();
        }
        holder.chkImage.setId(position);
        holder.imgThumb.setId(position);
        holder.chkImage.setOnClickListener(new View.OnClickListener() {

            public void onClick(View v) {
                CheckBox cb = (CheckBox) v;
                int id = cb.getId();
                if (thumbnailsselection[id]) {
                    cb.setChecked(false);
                    thumbnailsselection[id] = false;
                } else {
                    cb.setChecked(true);
                    thumbnailsselection[id] = true;
                }
            }
        });
        holder.imgThumb.setOnClickListener(new View.OnClickListener() {

            public void onClick(View v) {
                int id = holder.chkImage.getId();
                if (thumbnailsselection[id]) {
                    holder.chkImage.setChecked(false);
                    thumbnailsselection[id] = false;
                } else {
                    holder.chkImage.setChecked(true);
                    thumbnailsselection[id] = true;
                }
            }
        });
        try {
            setBitmap(holder.imgThumb, ids[position]);
        } catch (Throwable e) {
        }
        holder.chkImage.setChecked(thumbnailsselection[position]);
        holder.id = position;
        return convertView;
    }
}


/**
 * Inner class
 * @author tasol
 */
class ViewHolder {
    ImageView imgThumb;
    CheckBox chkImage;
    int id;
}

}

作为一名 Android 新手并使用网络帖子中的代码，我不得不问。
上面的代码不是已经创建了自定义 UI 了吗？
如果是这样，那么我如何获取原始照片 URI 或完整路径文件名以执行COPY/DELETE？

编辑＃2：
好的，让我继续展示我的无知......

在我的 GalleryImagePicker 代码中，在案例 R.id.btnSaveImages 的 OnActivity 中：我有一个imagesPathList()
当我输入包含所选照片的“路径”的代码部分时。

imagesPathList() 内容的真实示例：

imagesPathList(0) = /storage/emulated/0/DCIM/Camera/20180419_095352.jpg 
imagesPathList(1) = /storage/emulated/0/DCIM/Camera/20180419_095359.jpg

假设我以某种方式设法设置了 READ/WRITE 权限，我不能使用那些路径文件名来COPY/DELETE吗？

谢谢

标签： androidphoto

android - 将照片移动到应用程序内存中

问题描述

解决方案

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