Question

我的要求是从日期条目中读取输入以在特定日期范围之间搜索图像到目前为止，我刚刚创建了一个图库视图，用于从图像文件夹中检索所有图像我的代码是给定的。

如何仅在满足条件的图像显示图像文件夹的缩略图之前创建条件？

public void image_search(String st)
{
    Intent intent = new Intent();
    intent.setType("image/*");
    intent.setAction(Intent.ACTION_GET_CONTENT);
    startActivityForResult(Intent.createChooser(intent,
    "Select Picture"), SELECT_PICTURE);
}

public void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (resultCode == RESULT_OK) {
        if (requestCode == SELECT_PICTURE) {
            Uri selectedImageUri = data.getData();

            //OI FILE Manager
            filemanagerstring = selectedImageUri.getPath();

            //MEDIA GALLERY
            selectedImagePath = getPath(selectedImageUri);

            Intent intent = new Intent();
            intent.setAction(Intent.ACTION_VIEW);
            intent.setDataAndType(Uri.parse("file://" + selectedImagePath), "image/*");
            startActivity(intent);
        }
    }
}

//UPDATED!
public String getPath(Uri uri) {
    String selectedImagePath;
    //1:MEDIA GALLERY --- query from MediaStore.Images.Media.DATA
    String[] projection = { MediaStore.Images.Media.DATA };
    Cursor cursor = managedQuery(uri, projection, null, null, null);
    if(cursor != null){
        int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
        cursor.moveToFirst();
        selectedImagePath = cursor.getString(column_index);
    }else{
        selectedImagePath = null;
    }

    if(selectedImagePath == null){
        //2:OI FILE Manager --- call method: uri.getPath()
        selectedImagePath = uri.getPath();
    }
    return selectedImagePath;
}

Answer 1

如果您指的是文件类型条件，那么您只需设置所需的文件类型即可 intent.setType("image/png");仅获取PNG图片。

编辑：
您应该实现FileFilter接口以获取满足条件的列表文件。您可以从此列表中创建thumnails。

File imagesDir = // the File obj of directory containing image files.  
File[] imagelist = imagesDir.listFiles( new FileFilter {

    @override  
    public boolean accept(File file)  
    {  
    // return true if this file meets ur conditions(file.length and file.lastmodified())
    }  

}

在某些条件下显示来自图库的选定图像

1 个答案: