How to set textView at bottom in Linear layout

Create xml:

activity.main.xml

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:background="@drawable/cover"  

    android:orientation="vertical" >

 

    <TextView

        android:id="@+id/textView1"

        android:layout_width="match_parent"

        android:layout_height=0dp

        android:gravity="center|bottom"

        android:layout_weight="1"

        android:text="Large Text"

        android:textAppearance="?android:attr/textAppearanceLarge" />

 

</LinearLayout>

Read more...

Page Curl effect with Image and Text in Android

1. Create a new project with package name - com.example.curlpagetutorial
2. Edit the main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >

    <minh.app.mbook.MyLayout
        android:id="@+id/mainpage"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:layout_weight="1"
        android:background="#FFf3c5d6"
        android:orientation="vertical" />

    <LinearLayout
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:layout_weight="9"
        android:gravity="bottom"
        android:orientation="horizontal" >

        <Button
            android:id="@+id/btn_pre"
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            android:layout_weight="1"
            android:text="Back" />

        <Button
            android:id="@+id/btn_next"
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            android:layout_weight="1"
            android:text="Next" />
    </LinearLayout>
</LinearLayout>

3. Create page1.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:background="#ff660000"
    android:orientation="vertical" >

    <ImageView
        android:id="@+id/home"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:background="@drawable/cloud" />

    <LinearLayout
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:layout_weight="9"
        android:gravity="bottom"
        android:orientation="horizontal" >

        <Button
            android:id="@+id/btn_pre"
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            android:layout_weight="1"
            android:background="@android:color/transparent"
            android:text="Back" />

        <Button
            android:id="@+id/btn_next"
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            android:layout_weight="1"
            android:background="@android:color/transparent"
            android:text="Next" />
    </LinearLayout>

</LinearLayout>

4. Create another page2.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

    <TextView
        android:id="@+id/text"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:layout_margin="10dp"
        android:text="@string/text"
        android:textSize="20sp"
        android:textStyle="bold" />

</LinearLayout>

5. Now create a new package with name com.example.curlpagetutorial.layout
6. Create a new class in com.example.curlpagetutorial.layout named CustomLayout.java

package com.example.curlpagetutorial.layout;

import android.content.Context;
import android.util.AttributeSet;
import android.widget.RelativeLayout;

public abstract class CustomLayout extends RelativeLayout {
   
    public CustomLayout(Context context) {
        super(context);
       
    }

    public CustomLayout(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    protected void onLayout(boolean changed, int l, int t, int r, int b) {
        super.onLayout(changed, l, t, r, b);
        try {
            // Init game
            getPageContent();           
        } catch (Exception e) {
            // bug
            e.printStackTrace();
        }
    }

    //
    abstract protected void getPageContent();
}


7. Now create a class for example, TestLayout.java under package name com.example.curlpagetutorial
and import the CustomLayout.java class

package com.example.curlpagetutorial;

import com.example.curlpagetutorial.layout.CustomLayout;

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.util.AttributeSet;
import android.view.Display;
import android.view.LayoutInflater;
import android.view.View;
import android.view.WindowManager;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.ScrollView;

public class MyLayout extends CustomLayout{
    // Game name
    public static final String NAME = "SpaceBlaster";

    private Context mContext;
    //
    private int screenWidth;
    private int screenHeight;
    private int totalPages;
    //
    private MyBookView mBookView;


    public MyLayout(Context context) {
        super(context);
        mContext = context;
        init();
    }

    public MyLayout(Context context, AttributeSet attrs) {
        super(context, attrs);
        mContext = context;
        init();

    }
    private ScrollView scrollView;
    //
    private void init() {

        totalPages = 2;
        Display display = ((WindowManager) mContext.getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay();       
        screenWidth = display.getWidth();
        screenHeight = display.getHeight();
        //
        mBookView = new MyBookView(mContext, screenWidth, screenHeight);
        // prepare view to take all screenshoot
        LinearLayout ll = new LinearLayout(mContext);
        ll.setOrientation(LinearLayout.VERTICAL);
       
        LayoutInflater factory = LayoutInflater.from(mContext);
       
        View view = factory.inflate(R.layout.page1, null);       
       
        ll.addView(view, screenWidth,screenHeight);
       
        View view2 = factory.inflate(R.layout.page2, null);       
        ll.addView(view2, screenWidth,screenHeight);
       
        // hide scrollview's component to have clear bitmap
        scrollView = new ScrollView(mContext);
        scrollView.addView(ll);
        scrollView.setVerticalScrollBarEnabled(false);
        scrollView.setHorizontalScrollBarEnabled(false);       
        scrollView.setFadingEdgeLength(0);
        addView(scrollView);
       
        // add true view and some actions
        View view3 = factory.inflate(R.layout.page1, null);       
        addView(view3, screenWidth, screenHeight);
       
        View view4 = factory.inflate(R.layout.page2, null);       
        addView(view4, screenWidth, screenHeight);

        addView(mPoemView);       
        mPoemView.setView(view3, view4);
               
    }
    //
    public void next(){
        mPoemView.next();
    }
    //
    public void pre(){
        mPoemView.pre();
    }
    //

    private Bitmap mBitmap;
    private Bitmap page1, page2;

    public void getPageContent() {
        if(mBitmap==null){
            setBitmap();
        }
    }

    private void setBitmap() {       
        mBitmap = Bitmap.createBitmap(screenWidth, screenHeight*totalPages, Bitmap.Config.ARGB_8888);
        Canvas canvas = new Canvas(mBitmap);
        scrollView.draw(canvas);

        page1 = Bitmap.createBitmap(screenWidth, screenHeight, Bitmap.Config.ARGB_8888);
        Canvas canvas1 = new Canvas(page1);
        canvas1.drawBitmap(mBitmap, 0, 0, new Paint());
        page2 = Bitmap.createBitmap(screenWidth, screenHeight, Bitmap.Config.ARGB_8888);
        Canvas canvas2 = new Canvas(page2);
        canvas2.drawBitmap(mBitmap, 0, -screenHeight, new Paint());
        //removeAllViews();
        scrollView.setVisibility(View.GONE);
        //
        mPoemView.init(page1, page2);
        //
    }   
}

8. Now create a class MyBookView.java

package com.example.curlpagetutorial;

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Path;
import android.os.Handler;
import android.os.Message;
import android.util.Log;
import android.view.MotionEvent;
import android.view.View;

public class MyBookView extends View{
    // MyHandler myHandler = new MyHandler();
    private static int DEFAULT_FLIP_VALUE = 20;
    private static int FLIP_SPEED = 30;

    private long mMoveDelay = 1000 / 30;

    float xTouchValue = DEFAULT_FLIP_VALUE, yTouchValue = DEFAULT_FLIP_VALUE;;

    // String result = "";

    //
    class FlippingHandler extends Handler {
        @Override
        public void handleMessage(Message msg) {
            Log.i("Thong bao: ", "Clock Handler is still running");
            MyPoemView.this.flip();

        }

        public void sleep(long delayMillis) {

            this.removeMessages(0);

            sendMessageDelayed(obtainMessage(0), delayMillis);

        }
    }

    //

    //
    FlippingHandler flippingHandler;
    //
    int width;
    int height;

    float oldTouchX, oldTouchY;
    boolean flipping = false;
    boolean next;

    Point A, B, C, D, E, F;

    Bitmap visiblePage;
    Bitmap invisiblePage;
    Paint flipPagePaint;

    boolean flip = false;

    Context context;
    //
    int loadedPages = 0;
    long timeToLoad = 0;
    //

    // boolean loadingDone = false;

    boolean onloading = true;

    boolean onMoving = false;



    public MyBookView(Context context, int width, int height) {
        super(context);
        this.context = context;
        this.width = width;
        this.height = height;
        }

    public void init(Bitmap page1, Bitmap page2) {

        //
        flippingHandler = new FlippingHandler();
        //
        flipPagePaint = new Paint();
        flipPagePaint.setColor(Color.GRAY);
        flipPagePaint.setShadowLayer(5, -5, 5, 0x99000000);
        A = new Point(10, 0);
        B = new Point(width, height);
        C = new Point(width, 0);
        D = new Point(0, 0);
        E = new Point(0, 0);
        F = new Point(0, 0);

        xTouchValue = yTouchValue = DEFAULT_FLIP_VALUE;
        visiblePage = page1;
        invisiblePage = page2;
        onMoving = false;
        flipping = false;

        loadData();

    }

    //
    private void loadData() {
        // listOfPages.add("this is my text");
        onloading = false;

    }
    //
    private View visibleView, invisibleView;
    //
    public void setView(View view1, View view2){
        visibleView = view1;
        invisibleView = view2;
        visibleView.setVisibility(VISIBLE);
        invisibleView.setVisibility(GONE);
        this.setVisibility(GONE);
    }

    //
    public void next(){
        visibleView.setVisibility(GONE);
        this.setVisibility(VISIBLE);
        flipping = true;
        next = true;       
        flip();
    }
    //
    public void pre(){
        swap2Page();
        visibleView.setVisibility(GONE);
        this.setVisibility(VISIBLE);
        flipping = true;
        next = false;
        xTouchValue = width-30;
        flip();
    }

    @Override
    public boolean onTouchEvent(MotionEvent event) {
      
        if (!onloading) {
            //
            switch (event.getAction()) {
            case MotionEvent.ACTION_DOWN:

                oldTouchX = event.getX();
                oldTouchY = event.getY();
                flip = true;
                if (oldTouchX > (width >> 1)) {
                    xTouchValue = DEFAULT_FLIP_VALUE;
                    yTouchValue = DEFAULT_FLIP_VALUE;
                    // set invisible page's content
                    next = true;
                } else {
                    // set invisible page's content
                    // invisiblePage.setContent(index-1, null);
                    //
                    next = false;
                    //
                    swap2Page();
                    xTouchValue = width;
                    yTouchValue = DEFAULT_FLIP_VALUE;
                }
                break;
            case MotionEvent.ACTION_UP:
                if (onMoving) {
                    xTouchValue = width - A.x;
                    onMoving = false;
                }
                flipping = true;
                flip();
                break;
            case MotionEvent.ACTION_MOVE:
                // Log.i("Thong bao: ","x="+x+" y="+y);
                onMoving = true;
                //
                float xMouse = event.getX();
                float yMouse = event.getY();
                //
                xTouchValue -= (xMouse - oldTouchX) / 1;
                //
                yTouchValue -= yMouse - oldTouchY;
                //
                if (xMouse < oldTouchX) {
                    if (!next) {
                        flip = false;
                    }
                    next = true;

                } else {
                    if (next) {
                        flip = false;
                    }
                    next = false;
                }
                //
                oldTouchX = event.getX();
                oldTouchY = event.getY();

                this.invalidate();

                break;
            }

        }

        return true;
    }

    public void flip() {
       //
        if (flipping) {

           if (xTouchValue > width || xTouchValue < DEFAULT_FLIP_VALUE) {
                flipping = false;
                if (!flipping) {
                    //
                    if (next) {

                        swap2Page();

                    }
                    flip = false;
                    xTouchValue = DEFAULT_FLIP_VALUE;
                    yTouchValue = DEFAULT_FLIP_VALUE;
                    swap2View();

                }
                return;
            }
            if (next) {
                xTouchValue += FLIP_SPEED;
            } else {
                xTouchValue -= FLIP_SPEED;

            }
            this.invalidate();
            flippingHandler.sleep(mMoveDelay);
        }
    }

@Override
    protected void onDraw(Canvas canvas) {

        width = getWidth();
        height = getHeight();

        //
        if (flipping) {
            pointGenerate(xTouchValue, width, height);
        } else {
            // pointGenerateII(xTouchValue, yTouchValue, width, height);
            pointGenerate(xTouchValue, width, height);
        }
        // First Page render
        Paint paint = new Paint();
        canvas.drawColor(Color.GRAY);
        canvas.drawBitmap(visiblePage, 0, 0, paint);

        // Second Page Render
        Path pathX = pathOfTheMask();
        canvas.clipPath(pathX);
        canvas.drawBitmap(invisiblePage, 0, 0, paint);
        canvas.restore();
        // Flip Page render

        Path pathX2 = pathOfFlippedPaper();
        canvas.drawPath(pathX2, flipPagePaint);
        //
        pathX = null;
        pathX2 = null;
        paint = null;
    }

    //
    private Path pathOfTheMask() {
        Path path = new Path();
        path.moveTo(A.x, A.y);
        path.lineTo(B.x, B.y);
        path.lineTo(C.x, C.y);
        path.lineTo(D.x, D.y);
        path.lineTo(A.x, A.y);
        //
        return path;
    }
    //
    private Path pathOfFlippedPaper() {
        Path path = new Path();
        path.moveTo(A.x, A.y);
        path.lineTo(D.x, D.y);
        path.lineTo(E.x, E.y);
        path.lineTo(F.x, F.y);
        path.lineTo(A.x, A.y);
        return path;
    }
    //
    private void pointGenerate(float distance, int width, int height) {
        float xA = width - distance;
        float yA = height;
       
        float xD = 0;
        float yD = 0;
        //
        if (xA > width / 2) {
            xD = width;
            yD = height - (width - xA) * height / xA;
        } else {
            xD = 2 * xA;
            yD = 0;
        }       

        //
        double a = (height - yD) / (xD + distance - width);
        double alpha = Math.atan(a);
        double _cos = Math.cos(2 * alpha), _sin = Math.sin(2 * alpha);
        // E
        float xE = (float) (xD + _cos * (width - xD));
        float yE = (float) -(_sin * (width - xD));
        // F
        float xF = (float) (width - distance + _cos * distance);
        float yF = (float) (height - _sin * distance);
        //
        if (xA > width / 2) {
            xE = xD;
            yE = yD;
        }
        //
        A.x = xA;
        A.y = yA;
        D.x = xD;
        D.y = yD;
        E.x = xE;
        E.y = yE;
        F.x = xF;
        F.y = yF;
    }

    //
    float oldxF = 0, oldyF = 0;

    private void pointGenerateII(float xTouch, float yTouch, int width, int height) {
        //
        float yA = height;
        float xD = width;
        //

        //
        float xF = width - xTouch + 0.1f;
        float yF = height - yTouch + 0.1f;
        //
        if (A.x == 0) {
            xF = Math.min(xF, oldxF);
            yF = Math.max(yF, oldyF);
        }
        //
        float deltaX = width - xF;
        float deltaY = height - yF;
        //
        float BH = (float) (Math.sqrt(deltaX * deltaX + deltaY * deltaY) / 2);
        double tangAlpha = deltaY / deltaX;
        double alpha = Math.atan(tangAlpha);
        double _cos = Math.cos(alpha), _sin = Math.sin(alpha);
        //
        float xA = (float) (width - (BH / _cos));
        float yD = (float) (height - (BH / _sin));
        //

        xA = Math.max(0, xA);
        if (xA == 0) {
            oldxF = xF;
            oldyF = yF;
        }
        //
        float xE = xD;
        float yE = yD;
        if (yD < 0) {
            xD = width + (float) (tangAlpha * yD);
            yE = 0;
            xE = width + (float) (Math.tan(2 * alpha) * yD);

        }       

        //
        A.x = xA;
        A.y = yA;
        D.x = xD;
        D.y = Math.max(0, yD);
        E.x = xE;
        E.y = yE;
        F.x = xF;
        F.y = yF;
    }

    //
    private void swap2Page() {
        Bitmap temp = visiblePage;
        visiblePage = invisiblePage;
        invisiblePage = temp;
        temp = null;
    }
    private void swap2View(){
        View t = visibleView;
        visibleView = invisibleView;
        invisibleView = t;
        t=null;
        //
        visibleView.setVisibility(VISIBLE);
        this.setVisibility(GONE);
    }
}

9. Create the MainBook.java class

package com.example.curlpagetutorial;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;

public class MainBook extends Activity{
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        final MyLayout page = (MyLayout) findViewById(R.id.mainpage);
        View pre = findViewById(R.id.btn_pre);
        pre.setOnClickListener(new OnClickListener() {
           
            @Override
            public void onClick(View v) {
                page.pre();
               
            }
        });
        View next = findViewById(R.id.btn_next);
        next.setOnClickListener(new OnClickListener() {
           
            @Override
            public void onClick(View v) {
                page.next();
               
            }
        });
    }      
   
    @Override
    protected void onPause() {
        super.onPause();
        onStop();
    }
  
}

10. Create Point.java class

package com.example.curlpagetutorial;

public class Point {
    float x;
    float y;
    //
    public Point(float x, float y){
        this.x = x;
        this.y = y;
    }
   
}

11. Manifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.curlpagetutorial"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk android:minSdkVersion="4" />

    <application
        android:configChanges="keyboardHidden|orientation"
        android:icon="@drawable/icon"
        android:label="@string/app_name"
        android:screenOrientation="portrait" >
        <activity
            android:name=".MainBook"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

Read more...

parseSdkContent failed Could not initialize class android.graphics.Typeface

Problem:
When open layout editor, eclipse is giving this error:

parseSdkContent failed
Could not initialize class android.graphics.Typeface

And when try to run project, it is giving this error :

An internal error occurred during: "Launching myapp".
java.lang.NullPointerException

Solution:
Delete the home/.android folder and everything is normal now.
In Windows you can find this folder in C:/Users/User/

Read more...

COCOS2D-X

How to setup Cocos2d-X on Windows-7

1.       Download all these files and save it either C:\ or D:\ drive on your system.

a)      Download the Cocos2d-X http://www.cocos2d-x.org/filedown/cocos2d-x-3.2.zip

b)      Download the updated ADT  http://developer.android.com/sdk/index.html#win-bundle

c)       Download the updated NDK for 32-bit or 64-bit http://dl.google.com/android/ndk/android-ndk32-r10-windows-x86.zip

d)      Download the Apache ANT  http://apache.claz.org//ant/binaries/apache-ant-1.9.4-bin.zip

e)      Download the updated Python https://www.python.org/ftp/python/2.7.8/python-2.7.8.msi

2.       Extract all the zip files in the same drive.

3.       Now install the “python-2.7.8.msi”

4.       Now open the command prompt and run these commands:

a)      C:\Users\d>cd C:\Developer\cocos2d-x-3.2_4

b)      C:\Developer\cocos2d-x-3.2_4\setup.py

(It create the setup for the cocos2d-x and asked to setup for the NDK_ROOT, SDK_ROOT, ANT_ROOT)

c)       C:\Developer\android-ndk-r10

d)      C:\Developer\adt-bundle-windows-x86-20140702\sdk

e)      C:\Developer\apache-ant-1.9.4\bin

5.       Now restart the computer or command prompt

6.       Open the command prompt and again run C:\Developer\cocos2d-x-3.2_4\setup.py to check all the Path has been set

7.       Now create the project with command

cocos.py new PROJECT_NAME –p PACKAGE_NAME –l Language (example: cocos.py new MyApp –p com.example.MyApp –l cpp)

8.       Now open the project from where is it saved (my case: it is saved in C:\Developer\cocos2d-x-3.2_4\cocos2d-x-3.2\MyApp) and drag-n-drop it to the command prompt

9.       Now open the proj.android from created project C:\Developer\cocos2d-x-3.2_4\cocos2d-x-3.2\MyApp\proj.android

10.   Now run the project with the command build_native.py

(This will compile the cocos2d-x and our project)

11.   Now open the eclipse.exe

12.   Import the project from Android Existing Projects proj.android and libcocos2dx  (my case: it is saved in C:\Developer\cocos2d-x-3.2_4\cocos2d-x-3.2\MyApp)

13.   Now RUN the project

You may get the Error:

make.exe: [obj/local/armeabi/objs-debug/cocos2dx_static/3d/CCBundleReader.o] Error 1
make.exe: Waiting for unfinished jobs....
make.exe: Leaving directory `D:/cocos2d-x-3.2/tests/cpp-tests/proj.android'
Build dynamic library for project [ D:\cocos2d-x-3.2\build..\tests/cpp-tests/proj.android ] fails!

Solution:

The cause is that it's declared as "long int" in the header and "ssize_t" in the definition. I'm sure it will be patched soon officially, but locally you can just change "ssize_t BundleReader::tell()" to "long int BundleReader::tell()" and it should compile and link fine.

Read more...

ListViewDemo with image

Here we are going to create ListView with Images.
First we have to create Project named as ListViewDemo
1. Create a new Project, ListViewDemo
2. Open the activity_main.xml
3. We have add the ListView in it.
activity.main.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="com.example.listviewdemo.MainActivity" >

    <TextView
        android:id="@+id/textYear"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/my_car"
        android:textSize="20sp"
        android:textStyle="bold" />

    <ListView
        android:id="@+id/carsListView"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/textYear"
        android:layout_below="@+id/textYear" >

    </ListView>

</RelativeLayout>

4. We have to create a class where we want the objects to be displayed. Here I'm taking an example to show the Cars with details making, year, icon and condition
5. Create a class Car.java
package com.example.listviewdemo;

public class Car {
    private String make;
    private int year;
    private int iconId;
    private String condition;   
   
    public Car(String make, int year, int iconId, String condition) {
        super();
        this.make = make;
        this.year = year;
        this.iconId = iconId;
        this.condition = condition;
    }
    public String getMake() {
        return make;
    }
    public int getYear() {
        return year;
    }
    public int getIconId() {
        return iconId;
    }
    public String getCondition() {
        return condition;
    }
   
}
6. Now we have to create a view to display the list item
7. Create a xml item_view.xml
<ImageView
        android:id="@+id/item_icon"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_alignParentTop="true"
        android:adjustViewBounds="true"
        android:maxHeight="80dp"
        android:maxWidth="80dp"
        android:src="@drawable/audi" />
<TextView
        android:id="@+id/item_textMake"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/item_textYear"
        android:layout_alignParentTop="true"
        android:text="Make Shown Here"
        android:textAppearance="?android:attr/textAppearanceLarge" />
<TextView
        android:id="@+id/item_textYear"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignBottom="@+id/item_icon"
        android:layout_toRightOf="@+id/item_icon"
        android:text="2000"
        android:textAppearance="?android:attr/textAppearanceSmall" />
<TextView
        android:id="@+id/item_textCondition"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignBottom="@+id/item_icon"
        android:layout_alignParentRight="true"
        android:text="Condition Shown Here"
        android:textAppearance="?android:attr/textAppearanceMedium" />

8. Now we have to create a list in MainActivity.java class and call all the list item to show the cars
9. MainActivity.java
package com.example.listviewdemo;

import java.util.ArrayList;
import java.util.List;

import android.os.Bundle;
import android.support.v7.app.ActionBarActivity;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;

public class MainActivity extends ActionBarActivity {
    private List<Car> myCars = new ArrayList<Car>();

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

        populateCarList();
        populateListView();
        registerClickCallBack();
    }
    private void populateCarList() {
        // TODO Auto-generated method stub
        myCars.add(new Car("Audi", 1950, R.drawable.audi, "needing work"));
        myCars.add(new Car("Farari", 2005, R.drawable.black_farari, "nice color"));
        myCars.add(new Car("BMW", 2010, R.drawable.bmw, "latest BMW"));
        myCars.add(new Car("Chervolet", 2012, R.drawable.chervolet, "my favorite"));
        myCars.add(new Car("Italia", 2014, R.drawable.italia, "latest car"));   
    }
    private void populateListView() {
        ArrayAdapter<Car> adapter = new MyListAdapter();
        ListView list = (ListView) findViewById(R.id.carsListView);
        list.setAdapter(adapter);           
    }

    private void registerClickCallBack() {
        ListView list = (ListView)findViewById(R.id.carsListView);
        list.setOnItemClickListener(new AdapterView.OnItemClickListener() {

            @Override
            public void onItemClick(AdapterView<?> parent, View viewClicked,
                    int position, long id) {

                Car clickedCar = myCars.get(position);
                String message = "You clicked position " + position
                        + " which is car make " + clickedCar.getMake();
                Toast.makeText(MainActivity.this, message, Toast.LENGTH_LONG).show();
            }

        });

    }
    private class MyListAdapter extends ArrayAdapter<Car> {

        public MyListAdapter() {
            super(getApplicationContext(), R.layout.item_view, myCars);

        }

        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
            // Make sure we have the View to work with (may have been given null)
            View itemView = convertView;
            if(itemView == null){
                itemView = getLayoutInflater().inflate(R.layout.item_view, parent, false);
            }
            //Find the car to work with
            Car currentCar = myCars.get(position);

            //Fill the View
            ImageView imageVeiw = (ImageView)itemView.findViewById(R.id.item_icon);
            imageVeiw.setImageResource(currentCar.getIconId());

            //Make:
            TextView makeText = (TextView)itemView.findViewById(R.id.item_textMake);
            makeText.setText(currentCar.getMake());

            //Year:
            TextView yearText = (TextView)itemView.findViewById(R.id.item_textYear);
            yearText.setText(" " + currentCar.getYear());

            //Condition:
            TextView conditionText = (TextView)itemView.findViewById(R.id.item_textCondition);
            conditionText.setText(currentCar.getCondition());

            return itemView;
        }

    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();
        if (id == R.id.action_settings) {
            return true;
        }
        return super.onOptionsItemSelected(item);
    }
}

Read more...

DatabaseDemo - Example

1. Create a project : DatabaseDemo
2. Do some changes in activity_main.xml
3. Create EditText and Button
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="com.example.databasedemo.MainActivity" >

    <EditText
        android:id="@+id/name"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="16dp"
        android:ems="10"
        android:hint="Enter Name" >

        <requestFocus />
    </EditText>

    <Button
        android:id="@+id/load"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_alignParentRight="true"
        android:layout_marginBottom="126dp"
        android:layout_marginRight="34dp"
        android:text="Load Data" />

    <Button
        android:id="@+id/save"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignBaseline="@+id/load"
        android:layout_alignBottom="@+id/load"
        android:layout_alignLeft="@+id/email"
        android:text="Save Data" />

    <EditText
        android:id="@+id/email"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignRight="@+id/load"
        android:layout_below="@+id/name"
        android:layout_marginTop="44dp"
        android:ems="10"
        android:hint="Enter email id" />

</RelativeLayout>

4. Add these EditText and Button description in MainActivity.java class
package com.example.databasedemo;

import android.database.Cursor;
import android.os.Bundle;
import android.support.v7.app.ActionBarActivity;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

public class MainActivity extends ActionBarActivity {
   
    EditText name, email;
    Button save, load;
    DataHandler handler;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
       
        name = (EditText) findViewById(R.id.name);
        email = (EditText) findViewById(R.id.email);
        save = (Button) findViewById(R.id.save);
        load = (Button) findViewById(R.id.load);
       
        save.setOnClickListener(new OnClickListener() {
           
            @Override
            public void onClick(View v) {
                String getName = name.getText().toString();
                String getEmail = email.getText().toString();
               
                handler = new DataHandler(getBaseContext());
                handler.open();
                long id = handler.insertData(getName, getEmail);
                Toast.makeText(getBaseContext(), "Data inserted", Toast.LENGTH_LONG).show();
                handler.close();
            }
        });
       
        load.setOnClickListener(new OnClickListener() {
           
            @Override
            public void onClick(View v) {
                String getName, getEmail;
                getName = "";
                getEmail = "";
               
                handler = new DataHandler(getBaseContext());
                handler.open();
                Cursor C = handler.returnData();
                if(C.moveToFirst()){
                    do{
                        getName = C.getString(0);
                        getEmail = C.getString(1);
                   
                    } while(C.moveToNext());
                }
                handler.close();
                Toast.makeText(getBaseContext(), "Name: " + getName + " and Email: " + getEmail, Toast.LENGTH_LONG).show();
            }
        });
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();
        if (id == R.id.action_settings) {
            return true;
        }
        return super.onOptionsItemSelected(item);
    }
}

5. Create another java class DataHandler.java as required to handle the data
package com.example.databasedemo;

import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.SQLException;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;

public class DataHandler {
    public static final String NAME = "name";
    public static final String EMAIL = "email";
    public static final String TABLE_NAME = "mytable";
    public static final String DATA_BASE_NAME = "mydatabase";
    public static final int DATABASE_VERSION = 1;
    public static final String CREATE_TABLE = "create table mytable (name text not null, email text not null)";
   
    DataBaseHelper dbhelper;
    Context context;
    SQLiteDatabase db;
   
    public DataHandler (Context context){
        this.context = context;
        dbhelper = new DataBaseHelper(context);
    }
    private static class DataBaseHelper extends SQLiteOpenHelper{

        public DataBaseHelper(Context context) {
            super(context, DATA_BASE_NAME, null, DATABASE_VERSION);
        }

        @Override
        public void onCreate(SQLiteDatabase db) {
            try {
                db.execSQL(CREATE_TABLE);
            } catch (SQLException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }
       
        @Override
        public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
            db.execSQL("DROP TABLE IF EXISTS mytable");
            onCreate(db);
           
        }
       
    }
   
    public DataHandler open(){
        db = dbhelper.getWritableDatabase();
        return this;
    }
    public void close(){
        dbhelper.close();
    }
   
    public long insertData(String name, String email){
        ContentValues content = new ContentValues();
        content.put(NAME, name);
        content.put(EMAIL, email);
        return db.insertOrThrow(TABLE_NAME, null, content);
    }
   
    public Cursor returnData(){
        return db.query(TABLE_NAME, new String[] {NAME, EMAIL}, null, null, null, null, null);
    }
   
}

Read more...

Android: SeekBar Example

1. Create Project named SeekBarExample
2. Create main.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >

    <SeekBar
        android:id="@+id/seekBar1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_centerVertical="true"
        android:layout_margin="10dp"
        android:progressDrawable="@drawable/styled_progress"
        android:paddingLeft="15dp"
        android:paddingRight="15dp"
        android:thumb="@drawable/thumbler_small"
         android:indeterminate="false" />

</RelativeLayout>

3. Create drawable folder in res
4. Create styled_progress in drawable folder
<?xml version="1.0" encoding="UTF-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android" >

    <item
        android:id="@+android:id/SecondaryProgress"
        android:drawable="@drawable/progress_cyan"/>
    <item
        android:id="@+android:id/progress"
        android:drawable="@drawable/progress_red"/>

</layer-list>

5. Create MainActivity.java
package com.example.seekbarexample;

import android.app.Activity;
import android.os.Bundle;
import android.widget.SeekBar;
import android.widget.SeekBar.OnSeekBarChangeListener;

public class MainActivity extends Activity {
    SeekBar mybar;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        mybar = (SeekBar) findViewById(R.id.seekBar1);
       
        mybar.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {
           
            @Override
            public void onStopTrackingTouch(SeekBar seekBar) {
               
                //add here your implementation
            }
           
            @Override
            public void onStartTrackingTouch(SeekBar seekBar) {

                //add here your implementation
            }
           
            @Override
            public void onProgressChanged(SeekBar seekBar, int progress,
                    boolean fromUser) {

                //add here your implementation
            }
        });
    }


}

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