SelvinPL

interface BTPrinter
{
	void printAt(int top, int left, String message);
	//add more methods here
	void selectFont(String font);
	void cutThePaper();
}


class ZebraPrinter implements BTPrinter

SelvinPL

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

    <!-- Automatically generated file. DO NOT MODIFY -->

    <!-- Values from the variant -->
    <item name="colorAccent" type="color">#8CC63F</item>
    <item name="colorAccentA10" type="color">#198CC63F</item>
    <item name="colorAccentA20" type="color">#338CC63F</item>
    <item name="colorAccentA30" type="color">#4c8CC63F</item>

SelvinPL

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
    <item
        android:bottom="-6dp"
        android:right="-6dp"
        android:top="-6dp">
        <shape>
            <solid android:color="@android:color/black" />
            <stroke
                android:width="5dp"

SelvinPL

package pl.selvin.android.broadcastkilled;

import android.app.Activity;
import android.app.Notification;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.Bundle;
import android.util.Log;

SelvinPL

import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;

public class TestActivity extends Activity {
    //well context is not valid yet, but we will use later so it is ok to use "this"
    private Helper helper = new Helper(this);

SelvinPL

interface IMySuperInterface {
    void setNumPlats(int numero);
}

class MyAtivity extends Activity implements IMySuperInterface {
    //do the implentation and other stuff;
}

class MyFragment extends Fragment {
    IMySuperInterface defaultInstance = new IMySuperInterface {

SelvinPL

<!-- values/attr.xml -->
<?xml version="1.0" encoding="utf-8"?>
<resources>
    <attr name="my_image" format="reference" />
</resources>

<!-- values/styles.xml -->
<style name="MyThemeBase" parent="@style/MyThemeBaseBase">
    <item name="my_image">@drawable/my_image_en</item>
</style>

SelvinPL

apply plugin: 'com.android.application'

android {
    compileSdkVersion 22
    buildToolsVersion "22.0.1"

    defaultConfig {
        applicationId "pl.selvin.android.actionbar14"
        minSdkVersion 14
        targetSdkVersion 22

SelvinPL

 
class Service {
    onStartCommand() {
        enableGatheringOfSignalData();
    }
 
    useSignalData(data) {
        //do the stuff with signal data
    }
 

SelvinPL

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="pl.selvin.android.sigletaskissingle">

    <application
        android:allowBackup="true"
        android:label="SingleTaskIsSingleTask">
        <activity
            android:name=".Activities$ActivityA"
            android:label="Activity A"
            android:launchMode="singleTask">