android.content.CursorLoader#loadInBackground ( )源码实例Demo

下面列出了android.content.CursorLoader#loadInBackground ( ) 实例代码，或者点击链接到github查看源代码，也可以在右侧发表评论。

源代码1 项目： fastnfitness 文件： RealPathUtil.java

@SuppressLint("NewApi")
public static String getRealPathFromURI_API11to18(Context context, Uri contentUri) {
    String[] proj = {Images.Media.DATA};
    String result = null;

    CursorLoader cursorLoader = new CursorLoader(context, contentUri, proj, null, null, null);
    Cursor cursor = cursorLoader.loadInBackground();

    if (cursor != null) {
        int column_index = cursor.getColumnIndexOrThrow(Images.Media.DATA);
        cursor.moveToFirst();
        result = cursor.getString(column_index);
        cursor.close();
    }
    return result;
}

源代码2 项目： AndroidStudyDemo 文件： FileUtil.java

/**
 * 把uri转为File对象
 *
 * @param activity Activity
 * @param uri      文件Uri
 * @return File对象
 */
public static File uri2File(Activity activity, Uri uri) {
    if (Build.VERSION.SDK_INT < 11) {
        // 在API11以下可以使用：managedQuery
        String[] proj = {MediaStore.Images.Media.DATA};
        @SuppressWarnings("deprecation")
        Cursor actualimagecursor = activity.managedQuery(uri, proj, null, null,
                null);
        int actual_image_column_index = actualimagecursor
                .getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
        actualimagecursor.moveToFirst();
        String img_path = actualimagecursor
                .getString(actual_image_column_index);
        return new File(img_path);
    } else {
        // 在API11以上：要转为使用CursorLoader,并使用loadInBackground来返回
        String[] projection = {MediaStore.Images.Media.DATA};
        CursorLoader loader = new CursorLoader(activity, uri, projection, null,
                null, null);
        Cursor cursor = loader.loadInBackground();
        int column_index = cursor
                .getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
        cursor.moveToFirst();
        return new File(cursor.getString(column_index));
    }
}

源代码3 项目： VideoMeeting 文件： FileUtils.java

/**
 * 把媒体文件uri转为File对象
 */
public static File uri2File(Activity aty, Uri uri) {
    if (android.os.Build.VERSION.SDK_INT < 11) {
        // 在API11以下可以使用：managedQuery
        String[] proj = { MediaStore.Images.Media.DATA };
        @SuppressWarnings("deprecation")
        Cursor actualimagecursor = aty.managedQuery(uri, proj, null, null,
                null);
        int actual_image_column_index = actualimagecursor
                .getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
        actualimagecursor.moveToFirst();
        String img_path = actualimagecursor
                .getString(actual_image_column_index);
        return new File(img_path);
    } else {
        // 在API11以上：要转为使用CursorLoader,并使用loadInBackground来返回
        String[] projection = { MediaStore.Images.Media.DATA };
        CursorLoader loader = new CursorLoader(aty, uri, projection, null,
                null, null);
        Cursor cursor = loader.loadInBackground();
        int column_index = cursor
                .getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
        cursor.moveToFirst();
        return new File(cursor.getString(column_index));
    }
}

源代码4 项目： showCaseCordova 文件： FileHelper.java

@SuppressLint("NewApi")
public static String getRealPathFromURI_API11to18(Context context, Uri contentUri) {
    String[] proj = { MediaStore.Images.Media.DATA };
    String result = null;

    try {
        CursorLoader cursorLoader = new CursorLoader(context, contentUri, proj, null, null, null);
        Cursor cursor = cursorLoader.loadInBackground();

        if (cursor != null) {
            int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
            cursor.moveToFirst();
            result = cursor.getString(column_index);
        }
    } catch (Exception e) {
        result = null;
    }
    return result;
}

源代码5 项目： KJFrameForAndroid 文件： FileUtils.java

/**
 * 把uri转为File对象
 */
public static File uri2File(Activity aty, Uri uri) {
    if (SystemTool.getSDKVersion() < 11) {
        // 在API11以下可以使用：managedQuery
        String[] proj = { MediaStore.Images.Media.DATA };
        @SuppressWarnings("deprecation")
        Cursor actualimagecursor = aty.managedQuery(uri, proj, null, null,
                null);
        int actual_image_column_index = actualimagecursor
                .getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
        actualimagecursor.moveToFirst();
        String img_path = actualimagecursor
                .getString(actual_image_column_index);
        return new File(img_path);
    } else {
        // 在API11以上：要转为使用CursorLoader,并使用loadInBackground来返回
        String[] projection = { MediaStore.Images.Media.DATA };
        CursorLoader loader = new CursorLoader(aty, uri, projection, null,
                null, null);
        Cursor cursor = loader.loadInBackground();
        int column_index = cursor
                .getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
        cursor.moveToFirst();
        return new File(cursor.getString(column_index));
    }
}

源代码6 项目： reader 文件： FileHelper.java

@SuppressLint("NewApi")
public static String getRealPathFromURI_API11to18(Context context, Uri contentUri) {
    String[] proj = { MediaStore.Images.Media.DATA };
    String result = null;

    try {
        CursorLoader cursorLoader = new CursorLoader(context, contentUri, proj, null, null, null);
        Cursor cursor = cursorLoader.loadInBackground();

        if (cursor != null) {
            int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
            cursor.moveToFirst();
            result = cursor.getString(column_index);
        }
    } catch (Exception e) {
        result = null;
    }
    return result;
}

源代码7 项目： reader 文件： FileHelper.java

@SuppressLint("NewApi")
public static String getRealPathFromURI_API11to18(Context context, Uri contentUri) {
    String[] proj = { MediaStore.Images.Media.DATA };
    String result = null;

    try {
        CursorLoader cursorLoader = new CursorLoader(context, contentUri, proj, null, null, null);
        Cursor cursor = cursorLoader.loadInBackground();

        if (cursor != null) {
            int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
            cursor.moveToFirst();
            result = cursor.getString(column_index);
        }
    } catch (Exception e) {
        result = null;
    }
    return result;
}

源代码8 项目： reader 文件： FileHelper.java

@SuppressLint("NewApi")
public static String getRealPathFromURI_API11to18(Context context, Uri contentUri) {
    String[] proj = { MediaStore.Images.Media.DATA };
    String result = null;

    try {
        CursorLoader cursorLoader = new CursorLoader(context, contentUri, proj, null, null, null);
        Cursor cursor = cursorLoader.loadInBackground();

        if (cursor != null) {
            int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
            cursor.moveToFirst();
            result = cursor.getString(column_index);
        }
    } catch (Exception e) {
        result = null;
    }
    return result;
}

源代码9 项目： reader 文件： FileHelper.java

@SuppressLint("NewApi")
public static String getRealPathFromURI_API11to18(Context context, Uri contentUri) {
    String[] proj = { MediaStore.Images.Media.DATA };
    String result = null;

    try {
        CursorLoader cursorLoader = new CursorLoader(context, contentUri, proj, null, null, null);
        Cursor cursor = cursorLoader.loadInBackground();

        if (cursor != null) {
            int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
            cursor.moveToFirst();
            result = cursor.getString(column_index);
        }
    } catch (Exception e) {
        result = null;
    }
    return result;
}

源代码10 项目： Alexei 文件： Utils.java

public String getRealPathFromURI(Context context, Uri contentUri) {
    String[] proj = { MediaStore.Images.Media.DATA };

    //This method was deprecated in API level 11
    //Cursor cursor = managedQuery(contentUri, proj, null, null, null);

    CursorLoader cursorLoader = new CursorLoader(
            context,
            contentUri, proj, null, null, null);
    Cursor cursor = cursorLoader.loadInBackground();

    int column_index =
            cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
    cursor.moveToFirst();
    return cursor.getString(column_index);
}

源代码11 项目： CameraV 文件： HashActivity.java

public String getRealPathFromURI(Uri contentUri) {
 String[] proj = { MediaStore.Images.Media.DATA };
 
 //This method was deprecated in API level 11
 //Cursor cursor = managedQuery(contentUri, proj, null, null, null);
 
 CursorLoader cursorLoader = new CursorLoader(
           this, 
           contentUri, proj, null, null, null);        
 Cursor cursor = cursorLoader.loadInBackground();
 
 int column_index = 
   cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
 
 if (cursor.isBeforeFirst())
 {
  cursor.moveToFirst();
  return cursor.getString(column_index); 
 }
 else
  return null;
}

源代码12 项目： simple_share 文件： FileHelper.java

private String getRealPath(Uri uri) {
    String[] projection = { MediaStore.Images.Media.DATA };
    CursorLoader loader = new CursorLoader(registrar.context(), uri, projection, null, null, null);
    Cursor cursor = loader.loadInBackground();
    String result = null;
    if (cursor != null && cursor.moveToFirst()) {
        int col_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
        result = cursor.getString(col_index);
        cursor.close();
    }
    return result;
}

源代码13 项目： vmqApk 文件： UriUtil.java

/**
 * 适配api11-api18,根据uri获取图片的绝对路径
 */
private static String getRealPathFromUri_Api11To18(Context context, Uri uri) {
    String filePath = null;
    String[] projection = {MediaStore.Images.Media.DATA};
    CursorLoader loader = new CursorLoader(context, uri, projection, null, null, null);
    Cursor cursor = loader.loadInBackground();

    if (cursor != null) {
        cursor.moveToFirst();
        filePath = cursor.getString(cursor.getColumnIndex(projection[0]));
        cursor.close();
    }
    return filePath;
}

源代码14 项目： simple_share 文件： FileHelper.java

private String getRealPath(Uri uri) {
    String[] projection = { MediaStore.Images.Media.DATA };
    CursorLoader loader = new CursorLoader(registrar.context(), uri, projection, null, null, null);
    Cursor cursor = loader.loadInBackground();
    String result = null;
    if (cursor != null && cursor.moveToFirst()) {
        int col_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
        result = cursor.getString(col_index);
        cursor.close();
    }
    return result;
}

源代码15 项目： QrCodeDemo4 文件： UriUtil.java

/**
 * 适配api11-api18,根据uri获取图片的绝对路径
 */
private static String getRealPathFromUri_Api11To18(Context context, Uri uri) {
    String filePath = null;
    String[] projection = {MediaStore.Images.Media.DATA};
    CursorLoader loader = new CursorLoader(context, uri, projection, null, null, null);
    Cursor cursor = loader.loadInBackground();

    if (cursor != null) {
        cursor.moveToFirst();
        filePath = cursor.getString(cursor.getColumnIndex(projection[0]));
        cursor.close();
    }
    return filePath;
}

源代码16 项目： Common 文件： FileUtils.java

/**
 * 把uri转为File对象
 */
@TargetApi(Build.VERSION_CODES.HONEYCOMB)
public static File uri2File(Activity aty, Uri uri) {
    if (SystemTool.getSDKVersion() < 11) {
        // 在API11以下可以使用：managedQuery
        String[] proj = {MediaStore.Images.Media.DATA};
        @SuppressWarnings("deprecation")
        Cursor actualimagecursor = aty.managedQuery(uri, proj, null, null,
                null);
        int actual_image_column_index = actualimagecursor
                .getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
        actualimagecursor.moveToFirst();
        String img_path = actualimagecursor
                .getString(actual_image_column_index);
        return new File(img_path);
    } else {
        // 在API11以上：要转为使用CursorLoader,并使用loadInBackground来返回
        String[] projection = {MediaStore.Images.Media.DATA};
        CursorLoader loader = new CursorLoader(aty, uri, projection, null,
                null, null);
        Cursor cursor = loader.loadInBackground();
        int column_index = cursor
                .getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
        cursor.moveToFirst();
        return new File(cursor.getString(column_index));
    }
}

源代码17 项目： EmojiChat 文件： FileUtils.java

/**
 * 把uri转为File对象
 */
public static File uri2File(Activity aty, Uri uri) {
    String[] projection = {MediaStore.Images.Media.DATA};
    CursorLoader loader = new CursorLoader(aty, uri, projection, null, null, null);
    Cursor cursor = loader.loadInBackground();
    int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
    cursor.moveToFirst();
    return new File(cursor.getString(column_index));
}

源代码18 项目： glimmr 文件： LocalPhotosGridFragment.java

@Override
protected void initGridView() {
    mGridView = (GridView) mLayout.findViewById(R.id.gridview);
    mGridView.setVisibility(View.VISIBLE);
    mGridView.setMultiChoiceModeListener(this);
    mShowDetailsOverlay = false;
    String[] from = {MediaStore.MediaColumns.TITLE};
    int[] to = {android.R.id.text1};

    CursorLoader cursorLoader = new CursorLoader(
            getActivity(),
            SOURCE_URI,
            null,
            null,
            null,
            MediaStore.Audio.Media.TITLE);

    Cursor cursor = cursorLoader.loadInBackground();

    mAdapter = new MediaStoreImagesAdapter(
            getActivity(),
            R.layout.gridview_item,
            cursor,
            from,
            to);

    mGridView.setAdapter(mAdapter);
    mGridView.setChoiceMode(GridView.CHOICE_MODE_MULTIPLE_MODAL);
    mGridView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
        final String usageTip = getString(R.string.upload_photos_tip);
        @Override
        public void onItemClick(AdapterView<?> adapterView, View view, int position, long l) {
            UsageTips.getInstance().show(mActivity, usageTip, true);
        }
    });
}

源代码19 项目： imsdk-android 文件： VideoSelectorActivity.java

public void initData() {
    final String[] thumbColumns = {MediaStore.Video.Thumbnails.DATA,
            MediaStore.Video.Thumbnails.VIDEO_ID};

    String[] projection = {MediaStore.Video.Media._ID, MediaStore.Video.Media.DATA, MediaStore.Video.Media.SIZE, MediaStore.Video.Media.DURATION,MediaStore.Video.Media.DATE_ADDED};
    CursorLoader loader = new CursorLoader(VideoSelectorActivity.this, MediaStore.Video.Media.EXTERNAL_CONTENT_URI, projection,
            null, // Return all rows
            null, MediaStore.Video.Media.DATE_ADDED + " DESC");
    videos = new ArrayList();
    final Cursor mCursor = loader.loadInBackground();
    new Thread(new Runnable() {
        @Override
        public void run() {
            while (mCursor.moveToNext()) {
                String id = mCursor.getString(mCursor.getColumnIndex(MediaStore.Video.Media._ID));
                String path = mCursor.getString(mCursor.getColumnIndex(MediaStore.Video.Media.DATA));
                String size = mCursor.getString(mCursor.getColumnIndex(MediaStore.Video.Media.SIZE));
                String duration = mCursor.getString(mCursor.getColumnIndex(MediaStore.Video.Media.DURATION));

                LogUtil.d(TAG, path);
                VideoInfo info = new VideoInfo();

                Cursor thumbCursor = VideoSelectorActivity.this.getContentResolver().query(
                        MediaStore.Video.Thumbnails.EXTERNAL_CONTENT_URI,
                        thumbColumns, MediaStore.Video.Thumbnails.VIDEO_ID
                                + "=" + id, null, null);
                if (thumbCursor != null && thumbCursor.moveToFirst()) {
                    info.thumbPath = thumbCursor.getString(thumbCursor.getColumnIndex(MediaStore.Video.Thumbnails.DATA));
                }


                info.path = path;
                if(!TextUtils.isEmpty(size)){
                    info.size = size;
                }
                if(!TextUtils.isEmpty(duration)){
                    info.duration = duration;
                }
                videos.add(info);
            }
            mCursor.close();
            handler.sendEmptyMessage(0);
        }
    }).start();
}

源代码20 项目： glimmr 文件： LocalPhotosGridFragment.java

@Override
public View getView(final int position, View convertView,
        ViewGroup parent) {
    ViewHolder holder;
    if (convertView == null) {
        convertView = mActivity.getLayoutInflater().inflate(
                R.layout.gridview_item, null);
        holder = new ViewHolder();
        holder.imageOverlay = (LinearLayout) convertView.findViewById(R.id.imageOverlay);
        holder.image = (ImageView) convertView.findViewById(R.id.image_item);
        holder.imageNewRibbon = (ImageView) convertView.findViewById(R.id.imageNewRibbon);
        holder.ownerText = (TextView) convertView.findViewById(R.id.ownerText);
        holder.viewsText = (TextView) convertView.findViewById(R.id.viewsText);
        convertView.setTag(holder);
    } else {
        holder = (ViewHolder) convertView.getTag();
    }

    holder.imageOverlay.setVisibility(View.INVISIBLE);

    mCursor.moveToPosition(position);

    int myID = mCursor.getInt(mCursor.getColumnIndex(MediaStore.Images.Media._ID));

    String[] thumbColumns = {THUMB_DATA, THUMB_IMAGE_ID};
    CursorLoader thumbCursorLoader = new CursorLoader(
            getActivity(),
            THUMB_URI,
            thumbColumns,
            THUMB_IMAGE_ID + "=" + myID,
            null,
            null);
    Cursor thumbCursor = thumbCursorLoader.loadInBackground();

    Bitmap myBitmap = null;
    if(thumbCursor.moveToFirst()){
        int thCulumnIndex = thumbCursor.getColumnIndex(THUMB_DATA);
        String thumbPath = thumbCursor.getString(thCulumnIndex);
        myBitmap = BitmapFactory.decodeFile(thumbPath);
        holder.image.setImageBitmap(myBitmap);
    }

    /* Set tint on selected items */
    SparseBooleanArray checkArray = mGridView.getCheckedItemPositions();
    if (checkArray.get(position)) {
        int highlightColor = mActivity.getResources().getColor(
                R.color.transparent_flickr_pink);
        holder.image.setColorFilter(highlightColor);
    } else {
        holder.image.setColorFilter(null);
    }

    return convertView;
}

方法所在类

android.content.CursorLoader