Onething to note that the error "This Android SDK requires Android Developer Toolkit version 23.0.0 or above" will only come if you have updated your Android SDK Tool and Android SDK Platform Tool before updating your ADT.
Steps given by user285oo6 will also create some issues like when you delete the Updated SDK 23.0 then it will also remove the files from Platform-tools and tools folder from SDK directory. Now your eclipse wont start as it wont find the necessary files that are required to identify Android SDK or it may throw and error says "cannot find tools for the SDK" or "cannot find the version of ADT" or "emulator.exe not found".
This will download the SDK platform ZIP files and it contains the SDK manager along with tools folder. My Suggestion is to extract them and replace the -tools folder -SDK Manager.exe -AVD Manager.exein your android SDK directory.
Now you have latest ADT installed (if you have follow the user285oo6 steps. If not then install it using your eclipse with URL -
ssl.google.com/android/eclipse/) i.e. version 23.x.x and SDK on the older version.
When working with Android devices you should additionally install Android SDK Platform Tools. If you prefer to install a package made available by your distribution of choice, please make sure the version is recent to ensure compatibility with modern Android devices.
You now should have the mvt-ios and mvt-android utilities installed. If you run into problems with these commands not being found, ensure you have run pipx ensurepath and opened a new terminal window.
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Despite these successes, the full potential of the MinION and related ONT devices for in situ genomics has yet to be realised. This owes partly to the current lack of portable, offline solutions for the analysis of the sequencing data that they generate.
ONT devices measure the displacement of ionic current as a DNA or RNA strand passes through a biological nanopore1. The device periodically outputs a group of reads in the form of raw current signals (packed into a .fast5 file) that are subsequently base-called into sequences (a .fastq file). After base-calling, which can be run on a laptop or a portable MinIT device, analysis of the resulting sequence reads is typically performed using dedicated high-end server computers or cloud services (the latter requiring data upload over a high-bandwidth network). This can be an obstacle to ONT field applications. During Ebola surveillance in West Africa, for example, researchers regularly encountered Internet connectivity issues where 3G signals dropped to 2G, massively increasing data upload times2. Therefore, while sequencing and base-calling processes are now portable, the computational resources required for downstream bioinformatic analyses, such as sequence alignment and genome assembly, remain prohibitive to in situ genome analysis.
To help address this, we have developed Genopo, the first ever mobile toolkit for ONT-sequencing analysis. Genopo compacts popular bioinformatics tools to an Android application, suitable for smartphones and tablet computers, thereby enabling fully portable computation. Here, to demonstrate its utility, we use Genopo to determine the complete genome sequence of the human coronavirus SARS-CoV-2 in patient isolates sequenced on an ONT device. We then use Genopo to profile DNA methylation in a human genome sample, highlighting a flexible architecture that ensures the application is suitable for an array of common genome analyses.
Genopo is an Android application designed to enable fast, portable analysis of ONT-sequencing data on smartphones and tablet computers (Fig. 1). The application can execute a bioinformatics workflow on a nanopore-sequencing dataset copied or downloaded to the device storage (Fig. 1a). We have ported a range of popular tools to Genopo. This catalogue currently includes Minimap25, Samtools6, Bcftools6, Nanopolish7, f5c8, Bedtools9, Bioawk and will continue to grow according to the requirements of the community. The user can select to run an individual tool, a combination of tools or an entire pre-built workflow (Fig. 1b). An intuitive graphical user interface within the Genopo application allows the user to select their desired tools and configure common usage parameters (Fig. 1c). A terminal environment is also provided within the application, enabling an advanced user to enter command-line arguments. When the user starts the execution, output files are written to the phone storage and the log output is displayed on the application in real-time (Fig. 1d).
Genopo provides an efficient, flexible framework for integrating existing bioinformatics tools to run on Android and is suitable for many popular applications. It not only supports small genomes (e.g., SARS-CoV-2) but can also handle large eukaryotic genomes, including the human reference genome (e.g., GRCh38), using an index partitioning approach established elsewhere10.
An ONT device outputs data as a sequencing run proceeds, theoretically enabling real-time analysis1. To test the suitability of Genopo for real-time in situ analysis of ONT-sequencing data, we periodically sampled batches of 4000 reads from the second flow-cell dataset (451,359 reads, 3.89 Gbases), thereby mimicking the batch processing behaviour of the ONT base-caller. Batches of reads were assigned to all four smartphones and processed in parallel, using the same methylation-calling workflow as above (Supplementary Note 1.2).
The emergence of portable nanopore-sequencing devices has enabled high-throughput DNA and RNA sequencing to be performed in situ without major laboratory infrastructure1. The potential utility of ONT devices for field-based genomics applications and rapid point-of-care genetic diagnosis has garnered much excitement, with successful viral surveillance projects (including during the ongoing coronavirus pandemic) providing pertinent examples2,12,13. Equally exciting is the possibility that portable and inexpensive sequencing devices will facilitate the democratisation of genome science by reaching otherwise geographically and/or socioeconomically isolated communities. It is important, therefore, that computational tools developed for the analysis of nanopore-sequencing data are also compatible with these ambitions.
Genopo is not just a toolkit but also an open-source framework for integrating existing or future bioinformatics tools into the Android application. Detailed instructions for the reconfiguration and integration of bioinformatics tools into Genopo, methods to overcome challenges imposed by the restrictions in the Android Operating system and other Advanced Usage Instructions are provided online.
The ARTIC network for viral surveillance ( -2019) has established a standardised bioinformatics pipeline for SARS-CoV-2 genome analysis with ONT-sequencing data. We integrated this workflow into Genopo for the analysis of SARS-CoV-2 patient isolates. A detailed description of the workflow is provided in Supplementary Note 1.1. While this workflow is specifically tailored for analysis of SARS-CoV-2, Genopo also supports a generic variant calling pipeline that can be used for the analysis of any organism where a reference genome is available.
In addition to variant detection, Genopo also supports a generic pipeline for DNA methylation profiling, which is illustrated via the analysis of publicly available data from ONT sequencing of NA12878. A detailed description of the methylation-calling workflow is provided in Supplementary Note 1.2.
All sequencing data used in this study are publicly available. SARS-CoV-2 whole-genome sequencing data have been deposited to the Sequence Read Archive under Bioproject PRJNA651152. Human genome sequencing data from the NA12878 reference sample can be found at the following link: -wgs-consortium/NA12878/blob/master/Genome.md.
We thank our colleagues Prof Bill Rawlinson and A/Prof Rowena Bull, who oversaw collection and processing of SARS-CoV-2 patient isolates for a separate study. Thanks also to Chandima Samarasinghe, Harshana Weligampola, Nirodha Suchinthana, Rahal Medawatte and Yasiru Ranasinghe for providing valuable feedback after testing Genopo. We acknowledge the following funding sources: MRFF grant APP1173594 (to I.W.D.) and Cancer Institute NSW Early Career Fellowship 2018/ECF013 (to I.W.D.) and philanthropic support from The Kinghorn Foundation (to I.W.D. and H.G.). The contents of the published materials are solely the responsibility of the participating or individual authors, and they do not reflect the views of any funding body listed.
H.G., R.R. and H.S. conceived the project. H.S., S.P., A.S. and J.F. built and tested the Genopo application under supervision from H.G. I.W.D. and H.G. devised benchmarking experiments. J.H., I.S., J.F. and H.G. performed SARS-CoV-2 sequencing and established the analysis pipeline. H.S., H.G. and I.W.D. prepared the manuscript, with support from all co-authors.
For some strange reason it has recently sprouted an app labelled 'Virgin' which turns out to be a SIM toolkit which when opened displays "SIM Toolkit not ready or unsupported". Even more annoying is that it appears to be a system app and cannot be uninstalled. Any ideas how it got there? I have never been a Virgin Mobile customer. More to the point, how can I get rid of it? When I check the App Info, it doesn't potentially seem to do anything that can't be done in the phone's main SIM i.e. to turn data restriction on/off
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