deveshmittal

Let's take a look at the most common implicit intents such as making a phone call, launching a web address, sending an email, etc.

Phone Call

Permissions:

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

Intent callIntent = new Intent(Intent.ACTION_CALL);

deveshmittal

apply plugin: 'com.android.application'

def versionMajor = 2
def versionMinor = 0
def versionPatch = 6
def versionBuild = 0 // bump for dogfood builds, public betas, etc.

android {
    compileSdkVersion 19
    buildToolsVersion '19.1.0'

deveshmittal

public void GenericAsyncTask<T> extends AsyncTask<Void, Void , T>{
public interface TaskCompletionDelegate<T>{
public void onTaskCompleted(T result)}
private Class<T> type;

private TaskCompletionDelegate<T> listener;
public GenericAsyncTask(Class<T> classType , TaskCompletionDelegate listener ){
  this.type = classType;
  this.listener = listener;
}

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private int getItemViewType(Cursor cursor) {
    String type = cursor.getString(cursor.getColumnIndex("type"));
    if (type.equals("1")) {
        return 0;
    } else {
        return 1;
    }
}

@Override

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import java.util.Map.Entry;
import java.util.TreeMap;

// See http://stackoverflow.com/a/13400317/611182
public class Main {

    private static TreeMap<Double, String> m = new TreeMap<Double, String>();
    static {
        m.put(1.0, "A");
        m.put(2.9, null);

deveshmittal

For setting  up adb and other platform tools at path.

echo 'export PATH=$PATH:'$HOME'/Library/Android/sdk/platform-tools' >> ~/.bash_profile

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To create a symlink : 

sudo ln -s ${PWD}/bin/devesh /usr/bin/devesh

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/etc/profile
~/.bash_profile
~/.bash_login   
~/.profile     

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public class MyClass{
private volatile MyClass myClassObject;
public MyClass getInstance(){
  MyClass helper = myClassObject;
  // Optimisation for getting instance, if the helper has already been initialised return that.
  if(helper == null){
      synchronised(MyClass.this){
        // Since synchronised block takes some time to initialise ,in the mean time another thread might have entered
        // the synchronised block and initialised the helper variable. By ensuring that the myclassObject is volatile, we have established
        // a happens-before functionality on the myClassObject.

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/*
 * Copyright (C) 2013 Square, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software