Android code snippets

Below are some code Android code snippets, Android Studio, which maybe of use:-
Set textview color in code :-
TextView txt_vw;

txt_vw.setTextColor(ContextCompat.getColor(activity,R.color.colorRad));

Spinner :-
// find the spinner ....

Spinner spindecs = (Spinner) findViewById(R.id.spn_animate);

// using a array string  .... from the strings.xml file

ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(activity,
        R.array.footy_options, R.layout.spinner_txt_2);

adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spindecs.setAdapter(adapter);
// setting the selected item change event
spindecs.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {

    @Override    public void onItemSelected(AdapterView<?> arg0, View arg1,
                               int arg2, long arg3) {
        str_animate = arg0.getSelectedItem().toString().toLowerCase(Locale.US);
        populate(str_animate);
        b_startup = false;
    }





    //@Override    public void onNothingSelected(AdapterView<?> arg0) {
        // TODO Auto-generated method stub
    }
});

// setting the Adapter to a ArrayList :-
ArrayAdapter adp1 = new ArrayAdapter<>(activity,R.layout.spinner_txt_1, ArrayList_name);
// Button click events

Button btn = (Button) findViewById(R.id.btn_settings);
btn.setOnClickListener(new View.OnClickListener() {
    @Override    public void onClick(View v) {
        btn_settings();
    }
});

Button btn = (Button) rootView.findViewById(R.id.btn_settings);

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

Spinner set color text size,colour etc ....
// create a layout i.e spinner_txt_2 and reference it when setup arrayadapter as above

<?xml version="1.0" encoding="utf-8"?><TextView    xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="wrap_content"    android:textSize="@dimen/txt_hd_size"    android:gravity="left"    android:textColor="@color/colorspinner"    android:padding="0dip"    android:id="@android:id/text1"    />

Number Picker size/colour
//setting textsize etc of numberpicker using a theme
//scaleX,scaleY can be used to alter size ....
<NumberPicker android:layout_width="0dip" android:layout_weight="0.4" android:layout_height="@dimen/num_pick_height" android:id="@+id/num_high" android:solidColor="#56B8FF" android:theme="@style/AppTheme.Picker" />

//styles.xml

<style name="AppTheme.Picker" parent="Theme.AppCompat.Light.NoActionBar" >
    <item name="android:textColorPrimary">@color/colorwhite</item>
    <item name="android:textSize">@dimen/num_pick_txt</item>
    <item name="android:background">@color/colorBlack</item>
</style>

Requesting permission
@Overridepublic void onRequestPermissionsResult(int requestCode, String permissions[], int[] grantResults) {

    switch (requestCode) {

        case REQUEST_EXTERNAL_STORAGE: {
            // If request is cancelled, the result arrays are empty.            if (grantResults.length > 0                    && grantResults[0] == PackageManager.PERMISSION_GRANTED) {

              // now run the procedure etc ....

            } else {

Product Flavours with buildconfigfields:-
//build.gradle file

productFlavors {
    Apppredpro {
        applicationId = "com.xzy.www.xyz"        buildConfigField "boolean", "PAID_VERSION", "true"        buildConfigField "String", "DB_NAME", '"cfgh"'
    }

//in code

if(!BuildConfig.PAID_VERSION){
    Toast.makeText(activity, "This is the free version. For a low price,Please purchase the Full version from Google Play Store.", Toast.LENGTH_SHORT).show();
}

Arrays:-

String str_vals[] = new String[n];

ArrayList<String> array_name = new ArrayList<String>();

Content Values:-

import android.content.ContentValues;

ContentValues values = new ContentValues();

use :- values.put("id_game", str_rstxt[1]);

Examples of items to build.gradle etc in Adding Mobile Ads ....
AppBrain
//in build gradle

buildscript {
    repositories {
        jcenter()
        maven {
            url 'http://swisscodemonkeys.github.io/appbrain-sdk/maven'
        }
        mavenCentral()
    }
    dependencies {
        classpath 'com.appbrain:appbrain-applift-sdk:+'
    }
}

// proguard

# AppBrain SDK:-keep public class com.appbrain.KeepClass
-keep public class * implements com.appbrain.KeepClass
-keepclassmembers class * implements com.appbrain.KeepClass {
    <methods>;}

Adcolony
// in build.gradle

compile 'com.adcolony:sdk:3.1.2'

compile 'com.android.support:support-annotations:24.2.1'

//proguard
# For communication with AdColony's WebView -keepclassmembers class * {
     @android.webkit.JavascriptInterface <methods>; }
#For removing warnings due to lack of Multi-Window support
-dontwarn android.app.Activity

Amazon
// in build.gradle atleast

compile 'com.google.android.gms:play-services-ads:9.4.0'

compile 'com.google.android.gms:play-services-gcm:9.4.0'

compile 'com.amazon.android:mobile-ads:5.+'

//proguard

-dontwarn com.amazon.**
-keep class com.amazon.** {*;}
-keepattributes *Annotation*

KSoap2 -
using ksoap to connect to webservice.
// in build.gradle

compile 'com.google.code.ksoap2-android:ksoap2-android:3.6.1'

//in build gradle

allprojects {
    repositories {

maven { url 'https://oss.sonatype.org/content/repositories/ksoap2-android-releases/' }

//proguard..

-ignorewarnings-keep class org.kobjects.** { *; }
-keep class org.ksoap2.** { *; }
-keep class org.kxml2.** { *; }
-keep class org.xmlpull.** { *; }

//java file

import org.ksoap2.SoapEnvelope;
import org.ksoap2.serialization.PropertyInfo;
import org.ksoap2.serialization.SoapObject;
import org.ksoap2.serialization.SoapPrimitive;
import org.ksoap2.serialization.SoapSerializationEnvelope;
import org.ksoap2.transport.HttpTransportSE;

... in code ....

private static String NAMESPACE = "http://www.xyz.com/webservices/";
private static String URL = "http://www.xyz.com/service.asmx";
private static String SOAP_ACTION = "http://www.xyz.com/webservices/GetXYZ";

... in code ....

SoapObject request = new SoapObject(NAMESPACE, webMethName);

// Setup Property holds input parameters

PropertyInfo p_info = new PropertyInfo();
// Set Namep_info.setName("icase");
// Set Valuep_info.setValue(db_ver);
// Set dataTypep_info.setType(ArrayList.class);
request.addProperty(p_info);
// Create envelopeSoapSerializationEnvelope envelope = new SoapSerializationEnvelope(
        SoapEnvelope.VER11);
//Set envelope as dotNetenvelope.dotNet = true;
envelope.setOutputSoapObject(request);
resTxt = "Creating Call ...";
HttpTransportSE androidHttpTransport = new HttpTransportSE(URL);
try {
    // Invoke web service    resTxt = "Connecting ....";
    androidHttpTransport.call(SOAP_ACTION, envelope);
    resTxt = "Retrieved Data ....";
    SoapObject response = (SoapObject) envelope.bodyIn;
    resTxt = "Begin Process ....";
    SoapObject nameResult = (SoapObject) response.getProperty(0);

    int count = nameResult.getPropertyCount();

// loop thru the retrieved string ...
    if(count > 0) { 
        for (int i = 0; i < count - 1; i++) {
            //do whatever required next. in this example replace separator and then split. Could have split,depends on the retreived data
            resTxt = nameResult.getProperty(i).toString().replace("|^|", "*");
            str_rstxt = resTxt.split("\\*");
        }
    }else{
        resTxt = "No Data to Update ....!";
        return resTxt;
    }
    // Get the response    //    SoapPrimitive response = (SoapPrimitive) envelope.getResponse();    // Assign it to resTxt variable static variable   // arrdbversion.clear();    //    arrdbversion = response.toString();
} catch (Exception e) {
      e.printStackTrace(); }