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What objects do you have in your List? Is it an object you implemented yourself? If so, look closely at the implementation of the getCoinName() method, and make sure it's doing as you expect. (Maybe compare it to the toString() method, and see if they are both referencing the same CoinName field.
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What objects do you have in your List? Is it an object you implemented yourself? If so, look closely at the implementation of the getCoinName() method, and make sure it's doing as you expect. (Maybe compare it to the toString() method, and see if they are both referencing the same CoinName field.

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I have generated ArrayList from class like<br />
<br />

<pre><code id="code-10-29183220-1">coinArrayList=  ShowDash.getCoins();</code></pre>
<br />
and When I check the output of this Array I got<br />

<pre><code id="code-10-29183220-2">Log.d(&quot;coinArrayList&quot;, &quot;&quot; + String.valueOf(coinArrayList) );</code></pre>
<br />
I get an output like<br />

<pre><code id="code-10-29183220-3">D/coinArrayList: [{CoinName=COIN1, CoinBal=0.0, CoinPrice=8919.52}, {CoinName=COIN2, CoinBal=0.0, CoinPrice=101200.0}, {CoinName=COIN3, CoinBal=0.0, CoinPrice=112603.0}, {CoinName=COIN4, CoinBal=0.0, CoinPrice=226263.0}]</code></pre>
<br />
Now I need first value CoinName from this ArrayList so I wrote<br />

<pre><code id="code-10-29183220-4">Log.d(&quot;coinArrayList&quot;, &quot;&quot; + String.valueOf(coinArrayList.get(0).getCoinName()));</code></pre>
But here I always get null value. &nbsp;Why?
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I have generated ArrayList from class like

(CODE)

and When I check the output of this Array I got
(CODE)

I get an output like
(CODE)

Now I need first value CoinName from this ArrayList so I wrote
(CODE)
But here I always get null value.  Why?

Android ArrayList Issue

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Android

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Java is a platform-independent, object-oriented programming language and run-time environment, designed to have as few implementation dependencies as possible such that developers can write one set of code across all platforms using libraries. Most devices will not run Java natively, and require a run-time component to be installed in order to execute a Java program.