HeadFirstAndroid | #Android | Source code for the book Head First Android Development

 by   dogriffiths Java Updated: 8 months ago - Current License: MIT

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kandi X-RAY | HeadFirstAndroid REVIEW AND RATINGS

Source code for the book Head First Android Development by O’Reilly Media

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Support

  • HeadFirstAndroid has a low active ecosystem.
  • It has 481 star(s) with 333 fork(s).
  • It had no major release in the last 12 months.
  • On average issues are closed in 1 days.
  • It has a neutral sentiment in the developer community.

quality kandi
Quality

  • HeadFirstAndroid has 1 bugs (0 blocker, 0 critical, 1 major, 0 minor) and 76 code smells.

security
Security

  • HeadFirstAndroid has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
  • HeadFirstAndroid code analysis shows 0 unresolved vulnerabilities.
  • There are 1 security hotspots that need review.

license
License

  • HeadFirstAndroid is licensed under the MIT License. This license is Permissive.
  • Permissive licenses have the least restrictions, and you can use them in most projects.

build
Reuse

  • HeadFirstAndroid releases are not available. You will need to build from source code and install.
  • HeadFirstAndroid has no build file. You will be need to create the build yourself to build the component from source.
  • HeadFirstAndroid saves you 1638 person hours of effort in developing the same functionality from scratch.
  • It has 3636 lines of code, 182 functions and 200 files with 0 % test coverage
  • It has low code complexity. Code complexity directly impacts maintainability of the code.
Top functions reviewed by kandi - BETA

kandi has reviewed HeadFirstAndroid and discovered the below as its top functions. This is intended to give you an instant insight into HeadFirstAndroid implemented functionality, and help decide if they suit your requirements.

  • Select a fragment .
  • Show a toast message
  • Restart the database .
  • Runs a timer on the clock
  • Hides the OnBindViewHolder in the card holder .
  • Called when a beer is found .
  • Updates database .
  • Returns a list of available brands .
  • Handles the send message .
  • helper method to set the list view

HeadFirstAndroid Key Features

Source code for the book Head First Android Development by O’Reilly Media

HeadFirstAndroid examples and code snippets

  • Kotlin file to apk android flow?

Kotlin file to apk android flow?

kotlinc activity.kt
class MainActivity(): XXX {
    init {
        currentPosition = 0
    }
}
public com.hfad.bitsandpizzas.MainActivity();
  Code:
   0:   aload_0
   1:   invokespecial   #5; //Method android/app/Activity."<init>":()V
   4:   aload_0
   5:   iconst_0
   6:   putfield    #3; //Field currentPosition:I
   9:   return
-----------------------
kotlinc activity.kt
class MainActivity(): XXX {
    init {
        currentPosition = 0
    }
}
public com.hfad.bitsandpizzas.MainActivity();
  Code:
   0:   aload_0
   1:   invokespecial   #5; //Method android/app/Activity."<init>":()V
   4:   aload_0
   5:   iconst_0
   6:   putfield    #3; //Field currentPosition:I
   9:   return
-----------------------
kotlinc activity.kt
class MainActivity(): XXX {
    init {
        currentPosition = 0
    }
}
public com.hfad.bitsandpizzas.MainActivity();
  Code:
   0:   aload_0
   1:   invokespecial   #5; //Method android/app/Activity."<init>":()V
   4:   aload_0
   5:   iconst_0
   6:   putfield    #3; //Field currentPosition:I
   9:   return

COMMUNITY DISCUSSIONS

Top Trending Discussions on HeadFirstAndroid
  • Kotlin file to apk android flow?
  • Android cannot resolve symbol imported
Top Trending Discussions on HeadFirstAndroid

QUESTION

Kotlin file to apk android flow?

Asked 2017-Jun-22 at 05:54

What is execution flow of Kotlin file to apk in android. Using Java file like this .Java file -> .class file -> classes.dex -> .apk file. Refer this

for more details.

ANSWER

Answered 2017-Jun-22 at 05:54

Kotlin can be compiled to java classfile format, so it's: .kt file -> .class file -> classes.dex -> .apk file.

It differs from the Java to APK tool chain only in the first step, I wrote a simple explaination in the format of your given link:

Kotlin compilation

Your code is written in kotlin. But is that kotlin code compiled and run the same way as, say, a web application?

The compilation process for Android apps written in kotlin is very different from other Java applications. But it begins in the same way: your kotlin source code files are compiled into .class files using the kotlinc command (assuming you have installed kotlin and your source file is named activity.kt):

kotlinc activity.kt

or use other build tool to compile.

This converts kotlin code like this:

class MainActivity(): XXX {
    init {
        currentPosition = 0
    }
}

into Java byte-codes representing Java assembly that looks something like this:

public com.hfad.bitsandpizzas.MainActivity();
  Code:
   0:   aload_0
   1:   invokespecial   #5; //Method android/app/Activity."<init>":()V
   4:   aload_0
   5:   iconst_0
   6:   putfield    #3; //Field currentPosition:I
   9:   return

Source https://stackoverflow.com/questions/44690812

QUESTION

Android cannot resolve symbol imported

Asked 2017-Apr-12 at 08:12

I am following a guideline of a book called Head First Android Development A Brain-Friendly Guide By Dawn Griffiths, David Griffiths. The problem is that i completely copy the code suggested by the book but it doesn't work. I have already tried to copy the code in the book website https://github.com/dogriffiths/HeadFirstAndroid/tree/master/chapter06/Starbuzz but it still not work

It is the code form DrinkActivity.java:

package com.hfad.starbuzz;

import android.app.Activity;
import android.os.Bundle;
import android.widget.ImageView;
import android.widget.TextView;

public class DrinkActivity extends Activity {

    public static final String EXTRA_DRINKNO = "drinkNo";

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_drink);
    }

    int drinkNo= (Integer)getIntent().getExtras().get(EXTRA_DRINKNO);
    Drink drink = Drink.drinks[drinkNo];

    ImageView photo = (ImageView)findViewById(R.id.photo);
    photo.setImageResource(drink.getImageResourceID());
    photo.setContentDescription(drink.getName());

    TextView name=(TextView)findViewById(R.id.name);
    name.setText(drink.getName());

    TextView description=(TextView)findViewById(R.id.description);
    description.setText(drink.getDescription());
}

the method between cannot resolve symbol the method

such method are in another class as below:

package com.hfad.starbuzz;

public class Drink {
private String name;
private String description;
private int imageResourceId;

public static final Drink[] drinks = {
        new Drink("Latte", "A couple of espresso shots with steamed milk" , R.drawable.latte),
        new Drink("Cappuccino", "Espresso, hot milk, and a steamed milk foam", R.drawable.cappuccino),
        new Drink("Filter", "Highest quality beans roasted and brewed fresh", R.drawable.filter)
};

private Drink(String name, String description, int imageResourceId) {
    this.name= name;
    this.description= description;
    this.imageResourceId= imageResourceId;
}

public String getDescription() {
    return  description;
}

public String getName() {
    return  name;
}

public  int getImageResourceID() {
    return imageResourceId;
}

public String toString() {
    return this.name;
}
}

and the method setContentDescription and setText should be in TextView and ImageView in my understanding.

The problem is that i had already import TextView and ImageView.

So what happened?

Thank you

ANSWER

Answered 2017-Apr-11 at 19:42

Your code is outside of a method, paste it into the onCreate() method between the { and }

Source https://stackoverflow.com/questions/43354824

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

VULNERABILITIES

No vulnerabilities reported

INSTALL HeadFirstAndroid

You can use HeadFirstAndroid like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the HeadFirstAndroid component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer maven.apache.org. For Gradle installation, please refer gradle.org .

SUPPORT

For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .

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