Basic Android
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The document provides a guide on the structure and components of an Android application, including essential folders such as 'src', 'gen', 'assets', and 'res', as well as the manifest file. It outlines the activity lifecycle methods and their purposes, such as onCreate, onStart, onResume, onPause, onStop, onDestroy, and onRestart. Additionally, it gives instructions on customizing the application interface, such as hiding the activity title using specific methods.
Basic Android
- 1. Prepared By, NicheTech © NicheTech Com. Sol. Pvt. Ltd. http://www.nichetechsolutions.com/
- 2. SRC :- Folder contain the .java extension files that means you can write you application code inside this file. GOOGLE API 4.0:- Contain the file named android.jar which contains all class library needed for running the android application. Prepared By, NicheTech (C) NicheTech Com. Sol. Pvt. Ltd
- 3. GEN:- Contains the R.java file, a compiler-generated file that references all the resources found in your project. Assets:- contains all the assets used by your application, such as HTML, text files, databases, etc Prepared By, NicheTech (C) NicheTech Com. Sol. Pvt. Ltd
- 4. res :- This folder contains all the resources used in your application. This is the manifest file for your Android application. Here you specify the permissions needed by your application, as well as other features (such as intent- filters, receivers, etc.). Prepared By, NicheTech (C) NicheTech Com. Sol. Pvt. Ltd
- 5. MAIN.XML:- The @string in this case refers to the strings.xml file located in the res/values folder. Hence, @string/hello refers to the hello string defined in the strings.xml file, which is “FirstBasicAndroid, MainActivity!”: Prepared By, NicheTech (C) NicheTech Com. Sol. Pvt. Ltd
- 6. R.JAVA R.JAVA File using eclipse automatically generate the content, you are not suppose to modify the content of R.JAVA file Prepared By, NicheTech (C) NicheTech Com. Sol. Pvt. Ltd
- 7. The Activity base class defines a series of events that governs the life cycle of an activity. The Activity class defines the following events: ( Check out the next slides). Prepared By, NicheTech (C) NicheTech Com. Sol. Pvt. Ltd
- 8. ➤ onCreate() — Called when the activity is first created ➤ onStart() — Called when the activity becomes visible to the user ➤onResume() — Called when the activity starts interacting with the user ➤ onPause() — Called when the current activity is being paused and the previous activity is being resumed ➤onStop() — Called when the activity is no longer visible to the user ➤onDestroy() — Called before the activity is destroyed by the system (either manually or by the system to conserve memory) ➤onRestart() — Called when the activity has been stopped and is restarting again Prepared By, NicheTech (C) NicheTech Com. Sol. Pvt. Ltd
- 9. In android site, user or web developer can also apply the designing . if you apply the above designing theme then, your activity will appear as dialog box. Prepared By, NicheTech (C) NicheTech Com. Sol. Pvt. Ltd
- 10. If you are interested to hide the title of activity if required WHAT YOU SUPPOSE TO DO? import the library “ import android.view.window”; As well as “ import android.util.Log;” Use the requestWindowFeature() method and pass it the Window.FEATURE_NO_TITLE constant, like this: Prepared By, NicheTech (C) NicheTech Com. Sol. Pvt. Ltd
- 11. Prepared By, NicheTech (C) NicheTech Com. Sol. Pvt. Ltd Your Activity title is hide now !
- 12. Write the code inside the main yourprojectname.java file Prepared By, NicheTech (C) NicheTech Com. Sol. Pvt. Ltd
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- 14. Out Put Prepared By, NicheTech (C) NicheTech Com. Sol. Pvt. Ltd
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- 16. Prepared By, NicheTech (C) NicheTech Com. Sol. Pvt. Ltd