ANDROID and FLUTTER LIBRARY (Open Source Code)

Monday, 27 August 2018

How to Create Map and Show Current Location And Custom Location

Step 1:

AndroidStudio/New/MapActivity

activty_map.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
xmlns:tools="http://schemas.android.com/tools"
android:orientation="vertical"
android:layout_height="match_parent">
<android.support.v7.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@color/colorLiteGreen">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="40dp"
android:gravity="center|left"
android:orientation="horizontal">
<ImageView
android:id="@+id/im_arrow"
android:layout_width="25dp"
android:layout_height="20dp"
android:background="@drawable/arrow_left"/>
<ImageView
android:layout_width="150dp"
android:layout_height="30dp"
android:layout_marginLeft="30dp"
android:background="@drawable/logo_white"/>
</LinearLayout>

</android.support.v7.widget.Toolbar>
<fragment
android:id="@+id/map"
android:name="com.google.android.gms.maps.SupportMapFragment"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
tools:context="com.a2aonlinemart.MapsActivity" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="50dp"
android:gravity="center"
android:background="@color/colorLiteGreen">
<Button
android:id="@+id/but_loc"
android:layout_width="200dp"
android:layout_height="match_parent"
android:text="Location"
android:background="@color/colorAccent"/>
</LinearLayout>
</LinearLayout>

Step 2:

public class MapsActivity extends FragmentActivity implements OnMapReadyCallback {

private GoogleMap mMap;
LocationManager locationManager;
ImageView im_arrow;

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

im_arrow = (ImageView) findViewById(R.id.im_arrow);
// Obtain the SupportMapFragment and get notified when the map is ready to be used.
SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager()
.findFragmentById(R.id.map);
mapFragment.getMapAsync(this);

locationManager = (LocationManager) getSystemService(LOCATION_SERVICE);
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
// TODO: Consider calling
// ActivityCompat#requestPermissions
// here to request the missing permissions, and then overriding
// public void onRequestPermissionsResult(int requestCode, String[] permissions,
// int[] grantResults)
// to handle the case where the user grants the permission. See the documentation
// for ActivityCompat#requestPermissions for more details.
return;
}
if(locationManager.isProviderEnabled(locationManager.NETWORK_PROVIDER)){
locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0, new LocationListener() {
@Override
public void onLocationChanged(Location location) {
double latitute=location.getLatitude();
double longitude=location.getLongitude();
LatLng latLng=new LatLng(latitute,longitude);
Geocoder geocoder=new Geocoder(getApplicationContext());
try {
List<Address> arList=geocoder.getFromLocation(latitute,longitude, 1);
String str=arList.get(0).getLocality()+" , ";
str+=arList.get(0).getCountryName();

mMap.addMarker(new MarkerOptions().position(latLng).icon(BitmapDescriptorFactory.
defaultMarker(BitmapDescriptorFactory.HUE_AZURE)).title(str));

mMap.moveCamera(CameraUpdateFactory.newLatLngZoom(latLng, 10.2f));

//another mark
LatLng la1 = new LatLng(9.9252,78.1198);
LatLng la2 = new LatLng(13.0827,80.2707);
LatLng la3 = new LatLng(11.0168,76.9558);

List<Address> arList2=geocoder.getFromLocation(9.9252,78.1198, 1);
String str2=arList2.get(0).getLocality()+" , ";
str2+=arList.get(0).getCountryName();
mMap.addMarker(new MarkerOptions().position(la1).title(str2));

List<Address> arList3=geocoder.getFromLocation(13.0827,80.2707, 1);
String str3=arList3.get(0).getLocality()+" , ";
str3+=arList.get(0).getCountryName();
mMap.addMarker(new MarkerOptions().position(la2).title(str3));

List<Address> arList4=geocoder.getFromLocation(11.0168,76.9558, 1);
String str4=arList4.get(0).getLocality()+" , ";
str4+=arList.get(0).getCountryName();
mMap.addMarker(new MarkerOptions().position(la3).title(str4));

} catch (IOException e) {
e.printStackTrace();
}
}

@Override
public void onStatusChanged(String provider, int status, Bundle extras) {

}

@Override
public void onProviderEnabled(String provider) {

}

@Override
public void onProviderDisabled(String provider) {

}
});
}
else if (locationManager.isProviderEnabled(locationManager.GPS_PROVIDER)){
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, new LocationListener() {
@Override
public void onLocationChanged(Location location) {
double latitute=location.getLatitude();
double longitude=location.getLongitude();
LatLng latLng=new LatLng(latitute,longitude);
Geocoder geocoder=new Geocoder(getApplicationContext());
try {
List<Address> arList=geocoder.getFromLocation(latitute,longitude, 1);
String str=arList.get(0).getLocality()+", ";
str+=arList.get(0).getCountryName();
mMap.addMarker(new MarkerOptions().position(latLng).title(str));
mMap.moveCamera(CameraUpdateFactory.newLatLngZoom(latLng, 10.2f));

//another mark
LatLng la1 = new LatLng(15.664861, 77.134940);
LatLng la2 = new LatLng(9.816625, 77.811000);
LatLng la3 = new LatLng(8.454931, 77.708947);
mMap.addMarker(new MarkerOptions().position(la1).title("Hello World"));
mMap.addMarker(new MarkerOptions().position(la2).title("Hello World"));
mMap.addMarker(new MarkerOptions().position(la3).title("Hello World"));
} catch (IOException e) {
e.printStackTrace();
}
}

@Override
public void onStatusChanged(String provider, int status, Bundle extras) {

}

@Override
public void onProviderEnabled(String provider) {

}

@Override
public void onProviderDisabled(String provider) {

}
});

}

im_arrow.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
finish();
}
});
}

@Override
public void onMapReady(GoogleMap googleMap) {
mMap = googleMap;

/* LatLng la1 = new LatLng(15.664861, 77.134940);
LatLng la2 = new LatLng(9.816625, 77.811000);
LatLng la3 = new LatLng(8.454931, 77.708947);
mMap.addMarker(new MarkerOptions().position(la1).title("Hello World"));
mMap.addMarker(new MarkerOptions().position(la2).title("Hello World"));
mMap.addMarker(new MarkerOptions().position(la3).title("Hello World"));*/
/* mMap.moveCamera(CameraUpdateFactory.newLatLng(sydney));
mMap.moveCamera(CameraUpdateFactory.newLatLng(sydney2));
mMap.moveCamera(CameraUpdateFactory.newLatLng(sydney3));*/

}}

Step :3

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.a2aonlinemart">

<uses-permission android:name="android.permission.CAMERA"/>
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />

<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/AppTheme.NoActionBar">

<meta-data
android:name="com.google.android.geo.API_KEY"
android:value="@string/google_maps_key" />

<activity
android:name=".MapsActivity"
android:label="@string/title_activity_maps">
<intent-filter>
<action android:name="android.intent.action.MAIN" />

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

Step 4:

Insert your Map Access Key

res/values/google_map_api.xml

<resources>
    <!--    TODO: Before you run your application, you need a Google Maps API key.

    To get one, follow this link, follow the directions and press "Create" at the end:
    https://console.developers.google.com/flows/enableapi?apiid=maps_android_backend&keyType=CLIENT_SIDE_ANDROID&r=A7:4B:CD:47:43:E0:79:1B:22:30:C8:EE:D9:C0:40:5A:B8:B9:AA:F6%3Bcom.a2aonlinemart
    You can also add your credentials to an existing key, using these values:
    Package name:    A7:4B:CD:47:43:E0:79:1B:22:30:C8:EE:D9:C0:40:5A:B8:B9:AA:F6
    SHA-1 certificate fingerprint:    A7:4B:CD:47:43:E0:79:1B:22:30:C8:EE:D9:C0:40:5A:B8:B9:AA:F6
    Alternatively, follow the directions here:    https://developers.google.com/maps/documentation/android/start#get-key
    Once you have your key (it starts with "AIza"), replace the "google_maps_key"

   string in this file.    -->

 <string name="google_maps_key" templateMergeStrategy="preserve" translatable="false">

       xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx   <<<google map access key>>>
    </string>
</resources>

Blue Mark My Current Location

Red Mark Custom Location

Android How to Create Local DataBase in SQL

Step 1:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.v7.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="50dp"
android:background="@color/colorOrange">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:orientation="horizontal">
<ImageView
android:layout_width="40dp"
android:layout_gravity="center"
android:layout_height="40dp"
android:background="@drawable/logo"/>
<TextView
android:id="@+id/toolbar_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Biling and Storing"
android:textSize="16dp"
android:layout_marginLeft="10dp"
android:fontFamily="serif"
android:textColor="@android:color/white"/>
</LinearLayout>
</android.support.v7.widget.Toolbar>

<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center"
android:gravity="center"
android:layout_weight="8"
android:background="@color/colorOrange"
android:orientation="horizontal">
<TextView
android:id="@+id/text_date"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center"
android:layout_gravity="center"
android:text="Today Date"
android:textColor="@android:color/white"
android:textSize="18dp"
android:textStyle="bold" />
</LinearLayout>

<View
android:layout_width="match_parent"
android:layout_height="1dp"
android:background="@color/colorOrange"/>

<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="2.2"
android:orientation="vertical">

<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent">

<TextView
android:id="@+id/tvNoRecordsFound"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="15dp"
android:layout_marginLeft="15dp"
android:layout_marginTop="15dp"
android:gravity="center"
android:textColor="@android:color/black"
android:text="No Records Found"
android:textSize="15dp" />

<ListView
android:id="@+id/list_product"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_margin="8dp"
android:background="@android:color/white"
android:divider="@android:color/white"
android:dividerHeight="10dp"
android:scrollbars="none"></ListView>

<ImageView
android:id="@+id/add_item"
android:layout_width="40dp"
android:layout_height="40dp"
android:layout_gravity="bottom|right"
android:layout_marginBottom="70dp"
android:layout_marginRight="30dp"
android:background="@drawable/add" />
</FrameLayout>
</LinearLayout>
</LinearLayout>

Step 2:

public class MainActivity extends AppCompatActivity {
TextView text_date;
AlertDialog.Builder alertDialogBuilder;
AlertDialog.Builder alertDialogBuilder2;
ImageView im_add;
String sdfString,sdfString2;
Date mDate,mDate2;
EditText input_name;
EditText input_price;
private String name;
private String price;
ListView listView;

private CustomAdapter customAdapter;
Cursor cursor;
StudentRepo studentRepo ;
private final static String TAG= MainActivity.class.getName().toString();

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

valid();

im_add.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
click_add();
}
});

}

public void valid(){
alertDialogBuilder = new AlertDialog.Builder(MainActivity.this);
alertDialogBuilder2 = new AlertDialog.Builder(MainActivity.this);
im_add=(ImageView)findViewById(R.id.add_item);
listView=(ListView)findViewById(R.id.list_product);
text_date = (TextView) findViewById(R.id.text_date);

studentRepo = new StudentRepo(this);
cursor=studentRepo.getStudentList();
customAdapter = new CustomAdapter(MainActivity.this, cursor, 0);
listView.setAdapter(customAdapter);

bill=(LinearLayout)findViewById(R.id.layout_bill);
sale=(LinearLayout)findViewById(R.id.layout_sale);
detail=(LinearLayout)findViewById(R.id.layout_detail);
hellp=(LinearLayout)findViewById(R.id.layout_help);
setting=(LinearLayout)findViewById(R.id.layout_setting);

mDate=new Date();
mDate2=new Date();
SimpleDateFormat sdf = new SimpleDateFormat("dd/MM/yyyy", Locale.US);
SimpleDateFormat sdf2 = new SimpleDateFormat("ddMMyyyy", Locale.US);
sdfString = sdf.format(mDate);
sdfString2 = sdf2.format(mDate2);
text_date.setText(sdfString);
}
public void click_add(){
alertDialogBuilder.setTitle("Meteirial Name");
alertDialogBuilder2.setTitle("Meteirial Price");

alertDialogBuilder.setMessage("Enter Meteirial Name");
alertDialogBuilder2.setMessage("Enter Meteirial Price");

input_name = new EditText(MainActivity.this);
input_price = new EditText(MainActivity.this);

int maxLength = 10;
int maxLength2 = 4;

input_name.setInputType(InputType.TYPE_CLASS_TEXT);
input_price.setInputType(InputType.TYPE_CLASS_NUMBER);

InputFilter[] FilterArray = new InputFilter[1];
FilterArray[0] = new InputFilter.LengthFilter(maxLength);

InputFilter[] FilterArray2 = new InputFilter[1];
FilterArray2[0] = new InputFilter.LengthFilter(maxLength2);

input_name.setFilters(FilterArray);
input_price.setFilters(FilterArray2);

alertDialogBuilder.setView(input_name);
alertDialogBuilder2.setView(input_price);

alertDialogBuilder.setIcon(R.drawable.logo);
alertDialogBuilder2.setIcon(R.drawable.logo);

alertDialogBuilder.setPositiveButton("Ok",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog,int which) {

name=input_name.getText().toString();
if(name.length()>=2){
dialog.cancel();
AlertDialog dialog_price = alertDialogBuilder2.create();
dialog_price.getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_VISIBLE);
dialog_price.show();
}
else {
Toast.makeText(getApplicationContext(),"Enter Correct Value",Toast.LENGTH_SHORT).show(); }
}
});
alertDialogBuilder.setNegativeButton("Cancel",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog,int which) {

dialog.cancel();

}
});

alertDialogBuilder2.setPositiveButton("Ok",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog2,int which) {

price=input_price.getText().toString();

if(price.length()>=2){

insertDummy();
}
else {
Toast.makeText(getApplicationContext(),"Enter Correct Value",Toast.LENGTH_SHORT).show();
}
}
});
alertDialogBuilder2.setNegativeButton("Cancel",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog2,int which) {

dialog2.cancel();

}
});
alertDialogBuilder.setCancelable(true);
alertDialogBuilder2.setCancelable(true);

AlertDialog dialog_name = alertDialogBuilder.create();
dialog_name.getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_VISIBLE);
dialog_name.show();

}
private void insertDummy(){

Student student=new Student();
student.age= Integer.parseInt(sdfString2);
student.email=""+price;
student.name=""+name;
studentRepo.insert(student);
cursor=studentRepo.getStudentListByKeyword("");
if (cursor==null){
Toast.makeText(MainActivity.this,"No records found!",Toast.LENGTH_LONG).show();
}else{
Toast.makeText(MainActivity.this, cursor.getCount() + " records found!",Toast.LENGTH_LONG).show();
}
customAdapter.swapCursor(cursor);

}
}

Step 3:

CustomAdapter .java

public class CustomAdapter extends CursorAdapter {
TextView txtId,txtName,txtEmail;
private LayoutInflater mInflater;

public CustomAdapter(Context context, Cursor c, int flags) {
super(context, c, flags);
mInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}

@Override
public View newView(Context context, Cursor cursor, ViewGroup parent) {
View view = mInflater.inflate(R.layout.list_item, parent, false);
ViewHolder holder = new ViewHolder();
holder.txtId = (TextView) view.findViewById(R.id.txtId);
holder.txtName = (TextView) view.findViewById(R.id.txtName);
holder.txtEmail = (TextView) view.findViewById(R.id.txtEmail);
view.setTag(holder);
return view;
}

@Override
public void bindView(View view, Context context, Cursor cursor) {
//If you want to have zebra lines color effect uncomment below code
/*if(cursor.getPosition()%2==1) {
view.setBackgroundResource(R.drawable.item_list_backgroundcolor);
} else {
view.setBackgroundResource(R.drawable.item_list_backgroundcolor2);
}*/

ViewHolder holder = (ViewHolder) view.getTag();
holder.txtId.setText(cursor.getString(cursor.getColumnIndex(Student.KEY_ID)));
holder.txtName.setText(cursor.getString(cursor.getColumnIndex(Student.KEY_name)));
holder.txtEmail.setText(cursor.getString(cursor.getColumnIndex(Student.KEY_email)));

}

static class ViewHolder {
TextView txtId;
TextView txtName;
TextView txtEmail;
}
}

Step 4:

list_item.xml

<?xml version="1.0" encoding="utf-8"?>
<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.instinctcoder.zipunzip.MainActivity">

<LinearLayout android:id="@+id/thumbnail"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="3dip"
android:layout_marginRight="5dip"
android:layout_alignParentRight="true">

<ImageView
android:id="@+id/list_image"
android:layout_width="25dip"
android:layout_height="25dip"
android:src="@drawable/logo" />

</LinearLayout>

<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:text="email@instinctcoder.com"
android:id="@+id/txtEmail"
android:layout_weight="90"
android:layout_alignBottom="@+id/txtName"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true" />

<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:id="@+id/txtId"
android:visibility="gone"
android:text="1"
android:layout_weight="50" />

<TextView
android:layout_width="318dp"
android:layout_height="40dp"
android:textAppearance="?android:attr/textAppearanceMedium"
android:id="@+id/txtName"
android:text="ten"
android:textStyle="bold"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true" />

</RelativeLayout>

Step 5:

DBHelper .java

public class DBHelper extends SQLiteOpenHelper {

//version number to upgrade database version

//each time if you Add, Edit table, you need to change the

//version number.

private static final int DATABASE_VERSION = 1;

// Database Name

private static final String DATABASE_NAME = "searchwidget.db";

public DBHelper(Context context ) {

super(context, DATABASE_NAME, null, DATABASE_VERSION);

}

@Override

public void onCreate(SQLiteDatabase db) {

//All necessary tables you like to create will create here

String CREATE_TABLE_STUDENT = "CREATE TABLE " + Student.TABLE + "("

+ Student.KEY_ID + " INTEGER PRIMARY KEY AUTOINCREMENT ,"

+ Student.KEY_name + " TEXT, "

+ Student.KEY_age + " INTEGER, "

+ Student.KEY_email + " TEXT )";

db.execSQL(CREATE_TABLE_STUDENT);

}

@Override

public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {

// Drop older table if existed, all data will be gone!!!

db.execSQL("DROP TABLE IF EXISTS " + Student.TABLE);

// Create tables again

onCreate(db);

}

Step 6:

Student .java

public class Student {

// Labels table name

public static final String TABLE = "Student";

// Labels Table Columns names

public static final String KEY_ROWID = "_id";

public static final String KEY_ID = "id";

public static final String KEY_name = "name";

public static final String KEY_email = "email";

public static final String KEY_age = "age";

// property help us to keep data

public int student_ID;

public String name;

public String email;

public int age;

}

Step 7:

StudentRepo .java

public class StudentRepo {

private DBHelper dbHelper;

public StudentRepo(Context context) {

dbHelper = new DBHelper(context);

}

public int insert(Student student) {

//Open connection to write data

SQLiteDatabase db = dbHelper.getWritableDatabase();

ContentValues values = new ContentValues();

values.put(Student.KEY_age, student.age);

values.put(Student.KEY_email,student.email);

values.put(Student.KEY_name, student.name);

// Inserting Row

long student_Id = db.insert(Student.TABLE, null, values);

db.close(); // Closing database connection

return (int) student_Id;

}

public Cursor getStudentList() {

//Open connection to read only

SQLiteDatabase db = dbHelper.getReadableDatabase();

String selectQuery = "SELECT rowid as " +

Student.KEY_ROWID + "," +

Student.KEY_ID + "," +

Student.KEY_name + "," +

Student.KEY_email + "," +

Student.KEY_age +

" FROM " + Student.TABLE;

Cursor cursor = db.rawQuery(selectQuery, null);

// looping through all rows and adding to list

if (cursor == null) {

return null;

} else if (!cursor.moveToFirst()) {

cursor.close();

return null;

}

return cursor;

}

public Cursor getStudentListByKeyword(String search) {

//Open connection to read only

SQLiteDatabase db = dbHelper.getReadableDatabase();

String selectQuery = "SELECT rowid as " +

Student.KEY_ROWID + "," +

Student.KEY_ID + "," +

Student.KEY_name + "," +

Student.KEY_email + "," +

Student.KEY_age +

" FROM " + Student.TABLE +

" WHERE " + Student.KEY_name + " LIKE '%" +search + "%' "

;

Cursor cursor = db.rawQuery(selectQuery, null);

// looping through all rows and adding to list

if (cursor == null) {

return null;

} else if (!cursor.moveToFirst()) {

cursor.close();

return null;

}

return cursor;

}

public Student getStudentById(int Id){

SQLiteDatabase db = dbHelper.getReadableDatabase();

String selectQuery = "SELECT " +

Student.KEY_ID + "," +

Student.KEY_name + "," +

Student.KEY_email + "," +

Student.KEY_age +

" FROM " + Student.TABLE

+ " WHERE " +

Student.KEY_ID + "=?";// It's a good practice to use parameter ?, instead of concatenate string

int iCount =0;

Student student = new Student();

Cursor cursor = db.rawQuery(selectQuery, new String[] { String.valueOf(Id) } );

if (cursor.moveToFirst()) {

do {

student.student_ID =cursor.getInt(cursor.getColumnIndex(Student.KEY_ID));

student.name =cursor.getString(cursor.getColumnIndex(Student.KEY_name));

student.email =cursor.getString(cursor.getColumnIndex(Student.KEY_email));

student.age =cursor.getInt(cursor.getColumnIndex(Student.KEY_age));

} while (cursor.moveToNext());

}

cursor.close();

db.close();

return student;

}

How to Create BarCode and QRCode Scanner inside Fragment

Need file :

1.BarcodeActivity.java
2.compile 'me.dm7.barcodescanner:zxing:1.9'
3.BarcodeFragment.java
4.res/layout/fragment_barcode.xml

Step 1:

compile 'me.dm7.barcodescanner:zxing:1.9'

Step 2:

res/layoput/fragment_barcode.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"   
 xmlns:tools="http://schemas.android.com/tools" 
 xmlns:app="http://schemas.android.com/apk/res-auto"    
android:id="@+id/activity_main"    
android:layout_width="match_parent"    
android:layout_height="match_parent"    
android:orientation="vertical">
    <LinearLayout   
     android:layout_width="match_parent"    
      android:layout_height="match_parent"  
      android:layout_gravity="center"
        android:layout_weight="1"
        android:gravity="center"
        android:orientation="vertical">

        <ImageView
            android:layout_width="200dp"
            android:layout_height="100dp"
            android:layout_gravity="center"
            android:src="@drawable/logo" />

        <View
            android:layout_width="match_parent"
            android:layout_height="20dp" />

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="BarCode and QRCode Scaner"
            android:textColor="@color/colorDarkGreen"
            android:textSize="20dp" />
    </LinearLayout>
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_weight="1"
        android:gravity="center"
        android:orientation="vertical">
        <TextView
            android:id="@+id/text_scan" 
           android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginBottom="50dp"
            android:textSize="15dp"
            android:textColor="@android:color/black" 
           android:text="Scan" />


        <Button    
        android:id="@+id/buttonScan"
            android:layout_width="wrap_content"
            android:layout_height="40dp"  
          android:ems="15"       
     android:layout_gravity="center|bottom"  
          android:background="@drawable/button_selector"
            android:text="Scan QR Code"
            android:textAppearance="@style/Base.TextAppearance.AppCompat.Small"
            android:textColor="@android:color/white"
            android:textSize="13dp" />

    </LinearLayout>


</LinearLayout>



Step 3:


BarcodeActivity.java

public class BarcodeActivity extends AppCompatActivity implements ZXingScannerView.ResultHandler{

    private ZXingScannerView mScannerView;

    @Override    public void onCreate(Bundle state) {
        super.onCreate(state);
        mScannerView = new ZXingScannerView(this);   // Programmatically initialize the scanner view       
        setContentView(mScannerView);                // Set the scanner view as the content view    }

    @Override    public void onResume() {
        super.onResume();
        mScannerView.setResultHandler(this); // Register ourselves as a handler for scan results.  
        mScannerView.startCamera();          // Start camera on resume    }

    @Override    public void onPause() {
        super.onPause();
        mScannerView.stopCamera();           // Stop camera on pause    }

    @Override    public void handleResult(Result rawResult) {

        BarcodeQrcodeFragment.tx_scan.setText("Scan Result : "+rawResult.getText());
        onBackPressed();

    }
}


Step 4:


BarcodeQrcodeFragment .java

public class BarcodeQrcodeFragment extends Fragment{
    public static TextView tx_scan;
    Button bt_scan;
    @Override    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        final View view = inflater.inflate(R.layout.fragment_bar_qr_code, container, false);

        bt_scan=(Button)view.findViewById(R.id.buttonScan);
        tx_scan=(TextView)view.findViewById(R.id.text_scan);

        bt_scan.setOnClickListener(new View.OnClickListener() {
            @Override            public void onClick(View v) {
                Intent intent = new Intent(getActivity(),BarcodeActivity.class);
                startActivity(intent);
            }
        });
        return view;
    }
    }

Step 5 :

Manifests

<uses-permission android:name="android.permission.CAMERA"/>

How To Create Animation Splash Activity

Need File:

1.SplashActivity.java
2.activity_splash.xml
3.res/anim/translate.xml
4.res/anim/alpha.xml

Step 1:

res/anim/alpha.xml

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

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

    android:fromAlpha="0.0"

    android:toAlpha="1.0"

    android:duration="8000" />

Step 2:

res/anim/translate.xml

<?xml version="1.0" encoding="utf-8"?>
<set    xmlns:android="http://schemas.android.com/apk/res/android">

    <translate        xmlns:android="http://schemas.android.com/apk/res/android"
        android:fromXDelta="0%" 
       android:toXDelta="0%"    
    android:fromYDelta="200%"    
    android:toYDelta="0%"    
    android:duration="3000"   
     android:zAdjustment="bottom" />
</set>

Step 3:

res/layout/activity_splash.xml

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

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:gravity="center">
        <ImageView
            android:id="@+id/image_logo"
            android:layout_width="150dp"
            android:layout_height="100dp"
            android:background="@drawable/logo"/>
    </LinearLayout>
</LinearLayout>


Step 4:


public class SplashActivity extends Activity {

    Animation anim;
    private static int SPLASH_TIME_OUT = 5000;
    ImageView im_logo;
    LinearLayout lay_anim;

    public void onAttachedToWindow() {
        super.onAttachedToWindow();
        Window window = getWindow();
        window.setFormat(PixelFormat.RGBA_8888);
    }
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_splash);

        im_logo=(ImageView)findViewById(R.id.image_logo);
        lay_anim=(LinearLayout)findViewById(R.id.layout_anim);

        StartAnimations();

        new Handler().postDelayed(new Runnable() {
            @Override
            public void run() {
                Intent i=new Intent(SplashActivity.this,LoginActivity.class);
                startActivity(i);
                finish();
            }
        }, SPLASH_TIME_OUT);
    }
    private void StartAnimations() {

        
        anim = AnimationUtils.loadAnimation(this, R.anim.translate);
        anim.reset();

        lay_anim.clearAnimation();
        lay_anim.startAnimation(anim );

        anim = AnimationUtils.loadAnimation(this, R.anim.alpha_anim);
        anim.reset();
        im_logo.clearAnimation();
        im_logo.startAnimation(anim);



    }
}

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Monday, 27 August 2018

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