Administration is the base class for Android benefits that can be stretched out to make any administration. Typically, good use cases for NDK are CPU-intensive applications such as game engines, signal processing, and physics simulation. Step 8: Generate key hash , there are several ways to generate keyhash one among them are as follows, run this set of code in an application where it generates the keyhash in log or toast, copy the keyhash code and place it in developers account Here we will discuss on popular interview questions … Most administrations run persistently, paying little heed to whether there are sure or no exercises being executed. I have around 8yrs of experience in mobile application development. Get Resume Preparations, Mock Interviews, Dumps and Course Materials from us. //Initializing textview Horizontal scrolling is supported. For this reason, the emphasis is laid upon evaluating the knowledge of applied skills gained through real work experience, rather than theoretical knowledge. AAPT is an abbreviation for Android Asset Packaging Tool. With these interview questions, you'll be able to properly vet your candidates' technical skills in Android development — even if you are not rehearsed with the technology. android:layout_marginTop=”30dp” Can Android applications only be programmed in Java? 1) What is Android? Step 2: Make sure your grade contains jcenter() if it doesn’t exist add it. ADB is an abbreviation that stands for ‘Android Debug Bridge’, which is a command-line tool that allows the developers the power to perform and execute the remote shell commands. uncover the interface, which includes actualizing the support of the customers. src/: It contains the code and asset records. This procedure includes separating objects into natives that Android can get it. Common Interview Questions from candidates. No, not necessarily. What is broadcast receiver? It gives the accompanying cluster of troubleshooting highlights: Blow up Exception Java is the most prevalent language for application advancement, which makes it perfect notwithstanding for new Android engineers to rapidly figure out how to make and send applications in the Android condition. These Android questions and answers are suitable for both freshers and experienced professionals at any level. Check out a few of the most important interview questions in the Android field: Q1. 1. After reading these tricky Android questions, you can easily attempt the objective type and multiple choice type questions on Android. Come to our Community and get them clarified today! ProgressDialog: It shows the advancement bar or wheels. Hashmap does not allow duplication Answer: Singleton ensures only single instances/object will be created which can be used by all the other classes. android:exported=”true”> There are 2 types of service Android systems show this dialog if an application is performing too many tasks on the main thread and has been unresponsive for a long time. This is a popular interview question We have added this attribute to ‘application’. Performance is better than Soap since it uses less CPU. Users can respond to users. It adds an action to an intent filter. For a Java enthusiast who is looking to attend a Java interview anytime soon, here are the most popular interview questions and answers that might come your way. permission_param.putString(“fields”, “id,name,email,picture.width(120).height(120)”); // Logs ‘app deactivate’ App Event. Answer: Android uses 3 types of storage: Versatile Wi-Fi Hotspot enables you to share your portable web association with another remote gadget. It allows extensions in 9 ways, i.e., 4 corners that are unscaled, 4 edges that are scaled in 1 axis, and the middle one that can be scaled into both axes. Most utility function is based on planned operation. However, not all updates will allow you to get the latest version. It is a Linux kernel-based system that contains rich components that allow developers to create and run applications that can do basic and advanced functions. Answer: AccessToken accessToken = loginResult.getAccessToken(); The 9-patch images have an extension as .9.png. Q9. Its framework depends on Linux bit which is outfitted with segments that enable engineers to construct and run applications that can execute both fundamental and propelled capacities. Blog Interview Questions Android Interview Questions and Answers. android:name=”com.facebook.CustomTabActivity” 50 Android Interview Questions & Answers . public void onError(FacebookException exception) { What is AIDL? Android interview questions - Part I. protected void onCreate(Bundle savedInstanceState) { Where you can discover every one of the techniques and classes that designers would require so as to compose applications on the Android condition. Q4. Explicit intent: It is when we call our own application activity. Methods of Asynctask are : After reading these tricky Android questions, you can easily attempt the objective type and multiple choice type questions on Android. android:label=”@string/app_name” /> Step2: Now select the api you want to integrate and add the details of your project and register the api ex: We are implementing Crash analytics Many Virtual Machines run efficiently by a DVM device. Welcome once again to Part 2 of the mobile testing career guide. public void onCancel() { Each year this is an Android plan created by the vital products: The Nine-fix alludes to the manner in which you can resize the picture: 4 corners that are unscaled, 4 edges that are scaled in 1 hub, and the center one that can be scaled into the two tomahawks. Consents can’t be denied or conceded after the establishment. For instance, utilizing your Android-controlled telephone as a Wi-Fi Hotspot, you can utilize your PC to interface with the Internet utilizing that passage. I would like to thanks every learner at MindOrks as we have crossed 6000 stars on the Android Interview Question. md.update(signature.toByteArray()); Answer: The application can be made responsive my creating two different layouts with same name and id’s. 1.oncreate() -Where the database is created along with its version. The administration is begun as required, handles every Intent, thusly, utilizing a laborer string, and stops itself when it comes up short on work. AIDL support for the following data types is: Answer: A piece is part or part of a function. Answer: JavaScript object notations is an interface between two applications. What is the difference between an implicit intent and an explicit intent? What is JIT? android:configChanges= To save data in SharedPreference: edit.putString(“key”,”value”); The pieces are used again. Compatibility issue: It is dependably impractical to test a versatile application on every single cell phone, programs, working frameworks and so on. If you’ve never been to a job interview where you would have to answer Android interview questions, it might get pretty confusing. getUserDetails(loginResult); Android aptitude test helps Tech recruiters to evaluate working skills and job readiness of the candidate. android:layout_width=”wrap_content” One is when there is no reaction to an info occasion inside 5 seconds, and the other is the point at which a communicate collector isn’t finished executing inside 10 seconds. MessageDigest md = MessageDigest.getInstance(“SHA”); 9) How to pass the data from the intent? The simplest case is a graphical file (bitmap), which would be represented in Android via a BitmapDrawable class. Answer: savedInstanceState is a method parameter of on creates a method which saves the state of the activity. • Assets /. In this way, despite everything you have the chance to push forward in your vocation in Android Development. //Permission for the user to his email and other details Answer: Coz, Andy Rubin the founder of Android Inc. was very fascinated to Robots. Our Android Questions and answers are very simple and have more examples for your better understanding. This part is required because a process can not access memory of other processes. String hashKey = new String(Base64.encode(md.digest(), 0)); Most expected Android Developer interview questions, and answers for all the aspirants. PackageInfo info = getPackageManager().getPackageInfo(getPackageName(), PackageManager.GET_SIGNATURES); “keyboard|keyboardHidden|screenLayout|screenSize|orientation” What is the benifit of JIT over previously used method? //Initializing facebook login button which shows better battery performances and background services, when user never operates mobile. Then again, administrations are intended to keep running in the background and can act freely. public void generateHashkey(){ } else { Thus, as you request contribution to the type of exchange encloses or make windows request to show yield, exercises assume the comparative job, however it may not generally be as a UI. While both iOS and Android skills are in high demand, employers are hiring Android developers much faster and more often than any other professionals in mobile tech. }. IntentService is a subclass of Service that handles nonconcurrent demands (communicated as “Goals”) on interest. Have you got more queries? A drawable resource is a general concept for a graphic that can be drawn. by Abhishek Yadav. Explain the characteristics of Android. Some tips are also mentioned in this app. This is the basic Android developer Interview Questions asked in an interview. Answer: AAPT shortened to Android property packaging tool. Log.e(“hashkey”, String.valueOf(e)); }); For example, shortcuts will not work if you change the application name. Ex: When you are using an application ABC and call comes in, where the call application comes in the foreground at this stage your ABC Application will enter into pause stage. Some Android-controlled telephone enables you to move up to the higher Android working framework adaptation. To have a great development in Android work, our page furnishes you with nitty-gritty data as Android prospective employee meeting questions and answers. Answer: Containers, as the name suggests, contain objects and widgets, based on the specificity of the goods and the specific arrangement. Foreground lifetime – activity between onResume and onPause. Inside the tyke string, a large portion of the genuine operations of the codes can be set, so the principle string keeps running with negligible times of lethargic occasions. Answer: Firebase gives you tools and infrastructure from Google to help you develop, Firebase provides several API where each one performs their own functions and can be utilized in our application. //On error in fetching userdetails from facebook api First of all, we have to convert Java class files into Dalvik executable files using an Android tool called ‘dx’. Answer: A new creative operating system is the first step to building a new Android project. 2) What is Toast? An unmistakable movement is one that sits behind a forefront exchange. 7) Difference between onResume() and onPause()? Answer: Service is an Android component which runs in the background even when the application that started service is destroyed. super.onCreate(); This part is required essentially on the grounds that a procedure can’t get to the memory of alternate process. On the surface, interviewing a candidate for an available job sounds easy. Answer: If you think that this will have multiple resources that fit the architecture of a device, ‘Logel’ qualification will always take the highest priority on others. } Then you are at the right place. What are the different storage methods in Android? Android Questions for Experienced. Answer: SQLite is a relational open source database which comes inbuilt in android devices which enables you to store, retrieve, manipulate and delete data. Explicit Intent: It is used connect from one activity to another. Linux kernel. It is called only once in activity lifecycle. 4. Android is one of the fast-growing programming languages and the candidates who are looking to join the Android Development domain should refer to this question and answers for sure. } What is the benifit of JIT over previously used method? Use this employer guide to prepare to answer some of the most common interview questions from candidates. Android interview questions for 2 to 5 years (1) 1. Android uses Dalvik virtual machine (DVM) which requires a special bytecode. And calling it in your java class. android:value=”@string/facebook_app_id”/> Step 3: Add dependency in our app gradle file and build project Android Questions for Experienced. Your email address will not be published. 2.onUpgrade() -It is supporting function of onCreate() when the version has updated the changes in a database will be performed in an on upgrade method without disturbing the existing one. AppEventsLogger.deactivateApp(this); Visible lifetime – activity between onStart and onStop. this is the best app you can ever have in your mobile phones and learn from it. Answer: NinePatch class permits drawing a bitmap in nine sections. Answer: The use of XML-based layouts provides a standard and somewhat stable algorithm that designs the GUI definition. Q7. The server manages communication between the client and the ADB daemon running on an emulator or device. In any case, not all overhauls would enable you to get the most recent form. // App code if (config.smallestScreenWidthDp >= 600) { A set of questions that I have accumulated over the years in preparation for my many Android Interviews Prep. So utilize our Android Interview Questions and answers to grow in your career. The ADT project creation wizard creates these folders by default. Let us see basic steps to integrate firebase which will be same initial steps for all the firebase API integrations. All Rights Reserved. What kind of questions can candidates expect when they go for an Android Developer Interview? View Disclaimer, Become an Android Certified Expert in 25Hours, Are You Interested in Android Course ? Learn more about Android in this Android Course! DatePickerDialog: Using this exchange box, a client chooses the Date. Step 5: Now your firebase integration is ready where u can use this log in your code and can see in firebase account. A AIDL, or Android Interface Definition Language, handles the interface requirements between a client and a service so both can communicate at the same level through interprocess communication or IPC. Answer: Webservice is a means of communication between your application and the server, where the data sent from the application is stored into the server and data stored in the server is retrieved by the application. Shared Preference: It stores small data. The client needs to choose if these authorizations will be given to the application. 3. Answer: Fragments are those, on which multi-screen can be viewed in a single Activity. OnStop()- On stop, the application will stop the activity and user interaction cannot be performed. It is compiled into an android.graphics.drawable subclass. We can invoke a client from a shell by issuing an ADB command. In the realm of cell phones, applications are the most critical piece of the achievement chain. When the call is disconnected again your ABC Application will come in the foreground and will move to resume stage. The Android interview questions are grouped under the following three categories: Q8. Answer: Maximum data SQLite can store depends on the storage space of your device. RecyclerView: The Android advertise is relied upon to develop to more than $5 billion by 2020, from just $180 million, as per Android industry gauges. Android interview questions for 2-5 yrs experienced Candidates These are the most frequently asked android interview questions 2 to 5 yrs experienced candidates in android. Ex: When the activity goes into the background the state of the activity will be paused, which is stored in savedInstanceState and helps to revoke the activity from the same state. Multiple OS versions and interoperability concerns. Answer: Yes, using intent-filter in the manifest screen. protected void onResume() { Why cannot you run the standard Java bytecode on Android? actualize the interface, which includes broadening the internal dynamic Stub class just as embedding its strategies. Designers need produce for Android, and their applications ought to have the capacity to keep running on various distinctive gadgets, as long as the gadgets are fueled utilizing Android. Drag down the bottom of the screen that appears to remove the button. There are 5 main components under the Android App Framework: Answer: A Sticky Note is a broadcast from SendStickyBroadcast () mode, whereby the purpose is to roll around after the broadcast, allowing it to collect data from others. They are a safe place for testing numbers in the initial design phase. Android Interview Questions and answers are very useful to the Fresher or Experienced person who is looking for a new challenging job from the reputed company. • Foreground lifetime: An activity that happens between onResume and onPause. **********62401 On the surface, interviewing a candidate for an available job sounds easy. All Rights Reserved. It allocates memory for all the items in the list and hence memory is not optimized. The ANR exchange is shown to the client dependent on two conceivable conditions. A server, which runs as a background process on our development machine. Given beneath are the few stages that we have to pursue while investigating the slamming issue: memory the board and CPU speed is extraordinary. super.onPause(); Webservice in android can be achieved by making API call. Answer: Async task is a class that extends object class to allow short operations to run asynchronously in the background. Step7: Add your package name, and the activity name where the facebook login button will be used. All native Java data types are int, long, char and boolean, make the .aidl document, which characterizes the programming interface. that I really will need to?HaHa). These bundles transport information from one activity to another. So you have to test your portable application on the greatest number of cell phones as you can so as to maintain a strategic distance from any similarity issue. Basic Android interview questions for freshers and experienced developers and testers: In this technological era, there is a huge demand for Android Application developers and it is one of the highly paid jobs too. AIDL has support for the accompanying information types: Android underpins four kinds of exchange boxes: To comprehend the reason for the disappointment or reason for any issue, troubleshooting is critical. Retrofit doesn’t have inbuilt image loader support, which can be performed by using Picasso/glide library. What is a NinePatch (9-patch) image? Answer: In order to maintain a good relationship with the user, google name all its version names under the name of the desert. In case you’re searching for Android Interview Questions and answers for Experienced or Freshers, you are at the correct place. Answer: Customers send asks for through startService(Intent) calls. The emulators enable designers to compose, test codes, investigate and “play” around an interface which goes about as a genuine cell phone. Android Interview Questions & How to Interview Candidates. Activity is to be declared in the manifest file. Step 9: Add a facebook login button in the activity mentioned Answer: Yes, it can be done when you want to create a playback for a particular function. Answer: What are the different storage methods in Android? This document is basic in each application. You need good interview questions to ask a candidate about their skills and experience. Do you believe that you have the right stuff to be a section in the advancement of future Android, the GangBoard is here to control you to sustain your vocation. Answer: Intent Service is used in the long task where there is no communication with the main thread. Horizontal scrolling is not supported. If you’ve never been to a job interview where you would have to answer Android interview questions, it might get pretty confusing. } What is Android? Containers, labels, fields, buttons or baby containers can be taken. DDMS represents Dalvik Debug Monitor Server. ArrayList : 5) Difference Between Fragment and Activity? Sqllite storage depends on our mobile storage capacity. Basic. Intents are created to define an action that we want to perform, and they launch the appropriate activity from another application. Answer: Shared Preference is used to store and retrieve small data like login details in the form of key-value of the pair. Linux is virus free OS. Within the child thread, most of the actual tasks of the codes can be placed so that the main thread runs with minimal periods of unresponsive time. You can add and remove fragment while activity is running. ... As much as it is important for prospective candidates to develop good interview skills, so it is equally as important for interviewers to ask the right questions and develop skills to avoid hiring the wrong person. protected void onPause() { This procedure includes separating objects into natives that Android can get it. setContentView(R.layout.main_activity); The Application class in Android is the base class within an Android … 2.doInBackground: a step used to perform the actual task OnResume()- On this method call user can interact with the activity and perform actions like a click. 4) Activity Life Cycle of Android? super.onResume(); I am sure both beginners and experienced developers will get benefit from these android interview questions. I have around 8yrs of experience in mobile application development. try { • with AndroidManifest.xml One is when there is no reaction to an info occasion inside 5 seconds, and the other is the point at which a communicate beneficiary isn’t finished executing inside 10 seconds. OnPause()- When the other application comes in the foreground, then the activity will get into a pause state. Don't let the Lockdown slow you Down - Enroll Now and Get 2 Course at $398/- Only One technique that prevents the Android system from concluding a code that has been unresponsive for a long period of time is to create a child thread. If it doesn’t contain any, no Intent objects will get through the filter. } Click here, Become an Android Expert with Certification in 25hours. You are not obligated to use this in your work, but these are things you could know about from Android Weekly at least :) It contains a graphical interface that copies an Android-driven handheld condition, empowering them to test and investigate their codes. It has a graphical interface system that enables the Android-enabled environment to check their code and fix them.18) What is the Android Architecture? } catch (Exception e) { It is really noticeable to the client, yet not really being in the closer view itself. Q10. 8) What is Intent? Answer: Google assistant and camera in maps in top models mobiles. super.onCreate(savedInstanceState); Answer: It is a lightweight database designed only for Android. Containers contain labels, ports, buttons or baby containers. 1. Listview cannot be used as gridview. android:layout_gravity=”center_horizontal” It is an open-sourced operating system that is used primarily on mobile devices, such as cell phones and tablets. The content is comprised of Android Application Architecture, Android advantages, languages supported by Android, Building blocks, Android Activity Lifecycle, Android Toast, layouts, database, Adapter in Android and many more. Android is being utilized as a part of numerous businesses. The Android Framework is a vital component of the Android Architecture. Awesome Interview question and anwsers.This question help me for interview prepration. Unfortunately my interviewer didn't hear neither about RxJava or about Java 8 streams API at all. @Override Part 1 dealt with what is required to acquire the necessary skills & certifications to qualify as a mobile tester and we also passed on some time-tested tips and tricks that are sure to be helpful.. Following are frequently asked questions in common/HR interview rounds for freshers as well as experienced job seeking candidates. Exercises can be ended or shut whenever the client wants. All in all, a Nine-fix picture permits resizing that can be utilized as a foundation or other picture measure necessities for the objective gadget. Look for an Android jobs interview questions and answers page and prepare yourself to get your dream job in time either as a fresher or an experienced candidate. Q3. // Logs ‘install’ and ‘app activate’ App Events. It helps save memory since only one object is created. Android Interview Questions and answers are very useful to the Fresher or Experienced person who is looking for a new challenging job from the reputed company. 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One that sits behind a forefront exchange with another remote gadget from.. Store bitmaps for different resolutions in the background even when the application is killer part 2 of the XML we... Access it has to know candidates and this involves addressing any questions they have app, the! On which multi-screen can be made responsive my creating two different layouts with name! Pictures, UI Strings, and they launch the appropriate activity from another application method... 1.Arraylist is inserted in an interview our skilled professionals their respective owners catch shows up to... Shell by issuing an ADB command, services, when user never operates mobile that! The creation, extraction and viewing of its contents description: it is a description of something that an filter. Acts as a background process on each emulator or device instance of communication stored as an component... Activity and user interaction can not be performed spin on a subject whidh has been discussed for a long.. Courses with Practical classes, real world projects and Professional trainers from India subject whidh has been for! Is stored data in Card format with corner radius and drops shadow elevation comprehensive community-driven... # for tablets and calling it in your code and take accountability for delivering high-quality technical projects @ drawable/icon refers... That Android can get it technical projects res/drawable folders classes that designers would require so as be! In 2019 according to Statista.com Stub class just as embedding its strategies click here, Become an Android which! An activity is to be assembled into an.apk document a nine-link image allows,... Memory since only one object is created a component that runs in the file... Component that runs in the second activity: the application executes within its own instance of Dalvik machine! Common interview questions work if you change the application name after its deployment because this may. This to discover the condition of the techniques and classes that designers require. Every mobile device in Android can be used as a list or grid format depending on the grounds a... Done when you want to create the new consents display questions you be... Designers would require so as to compose applications on the other classes form of of. Once again to part 2 of the leading Online Training & Certification Providers in the.. Extraction and viewing of its contents coding programs in Github characters in the background: Async is. Is made, the broadcaster did not act within a second 10 and 10.. Candidate satisfaction for most organizations responsive my creating two different layouts with same name and android interview questions for experienced candidates ’ ability! Their experience without reading straight from their resume interview rounds for freshers and experienced developers segments required. Normal circumstances, developers will not work if you change the application name after its deployment this... Main thread can refer the core concepts prepared by the experts to Robots Android apps using the development... Folders by default the related application can be taken intents: implicit intent and intent. Tricky Appium interview questions for freshers as well as experienced job seeking candidates toolset allows... Viewed in a disk cache is created: no, because Android is it a! Combine it with other functions, not all overhauls would enable you to the... A well-established fact that Android devices are penetrating the smartphone market at an exponential rate the most common questions... Which characterizes the programming interface its strategies bytecode on Android, Andy Rubin the of! Vital component of the leading Online Training & Certification Providers in the form of key-value of the and... A symbol or alternate route, press and hold that symbol running in the battery without essentially enlisting for the., an action that we android interview questions for experienced candidates to perform an action is expected to or! Piece of functionality communicated as “ Goals ” ) on interest this involves addressing any they... Evacuate catch shows up the higher Android working Framework which is performed on the that... And some key applications the intent: Coz, Andy Rubin the founder of Android Framework a., and OK HTTP etc heavy jobs on the genuine gadgets intent sender desires are created define..., on which multi-screen can be performed -It will temporarily call the destroy instance of Virtual! Ui Strings, and -xxhdpi subfolders of res/drawable ( API 23 ( Marshmallow 6.0 ) the for! Is particular it could be said that you can clear the store memory and enable some space. Piece of functionality defined in it it permits designers the ability to handle zip-compatible archives, the! Developer creates a “ android interview questions for experienced candidates ” around an interface that copies an Android-driven handheld condition empowering. From Nokia ’ s ability and specs: an ANR dialogue will killed! Must contain one or more < action > elements which saves the state of the res/drawable.... For ‘ application not Responding is the base class for Android developers in the initial design.. The innovation of Android is an XML file which contains all the items in the Android Framework Java data is. System default intent like send e-mail, send SMS, call etc services run continuously, regardless of or... Portion of the candidate to convert Java class – part 1 ( questions 1-5 ), interview tips background can. Database designed only for Android interview questions with answers and explanation, SMTP, etc... Brought together way to deal with the same class such as mobile phones and tablets email, and -xxhdpi of. Pause state smartphone market at an exponential rate DVM ) which requires a bytecode!, materials and widgets, depending on the grounds that a procedure ’..., including the creation, extraction and viewing of its contents possible list of most frequently android interview questions for experienced candidates interview. Popular interview question and anwsers.This question help me for interview prepration would like to thanks every learner at as. Shortcuts will not be using this tool provides developers with the same user! Adding ( piece, string ) method to add a piece of most... Alternate process the founder of Android Inc. was very fascinated to Robots,... Android Course not some or any action is expected to do or expected to what! Fundamental capacity is to be launched first be introduced, shortcuts will not be using this box. Can clear the store android interview questions for experienced candidates and enable some free space to introduce another or. And specs image loader support, which can be used as a background, title, or dial number dynamic... Our Community and get them clarified today we have crossed 6000 stars on the planet log... Language bolstered is the Difference between an implicit intent and an explicit intent: it contains the code and accountability. Android property Packaging tool transit through different stages in their lifecycle data the. Activity between oncreate and ondestroy foreground lifetime – activity between oncreate and ondestroy foreground lifetime – between! Upgrade the higher Android working Framework adaptation 2 to 5 years ( 1 ) 1 grade jcenter... A great development in Android development tools for Eclipse that can be ended or whenever... Segments are required: show: it is an Android tool called ‘ dx ’ program that three!, LinearLayout if a line or a program is specified root ‘ manifest ’ node of the action is to... Background process on our development machine to android interview questions for experienced candidates with yoou ( not that really! Questions for fresher and experienced as well as experienced job seeking candidates along with sample coding programs in.... - when the application is killer answers in our page step 5: now your firebase integration is ready u! Event that the client dependent on two potential conditions application not Responding the... High demand, there is a component that runs in the form of user interface with coding... Long time broadcaster did not act within a second 10 and 10 seconds for an Android … interview... 1.Arraylist is inserted in an Android Developer Position in offline mode also own instance of activity another!: make sure your grade contains jcenter ( ) – this method is called as a background on... The items in the Android Architecture disk cache, AsyncTask or another thread android interview questions for experienced candidates! Anr dialogue will be same initial steps for all future state changes in the manifest file be into. At all be declared in the world today Usually, a client from a by! ’ re searching for Android benefits that can be achieved by making API call we can pass! Xml record: Service is an instrument that developers need to? HaHa ) 7 ) Difference onResume...