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POAsyncTask error from getView using a HashMap - Android
 

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  1. POAsyncTask error from getView using a HashMap - Android
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    <p>I have set this up to allow me to change the Visibility of a TextView from on online file which get turned into strings and all of it works fine apart from when I add in the parts of the code that allows me to change Visibility of a TextView. I do not understand why this isn't working. Here is a logcat:</p> <pre><code>07-21 19:00:46.451 21334-21334/com.example.app E/AndroidRuntime: FATAL EXCEPTION: main java.lang.NullPointerException at com.example.app.LazyAdapter.getView(LazyAdapter.java:68) at android.widget.AbsListView.obtainView(AbsListView.java:2035) at android.widget.ListView.measureHeightOfChildren(ListView.java:1244) at android.widget.ListView.onMeasure(ListView.java:1155) at android.view.View.measure(View.java:12723) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4698) at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1369) at android.widget.LinearLayout.measureVertical(LinearLayout.java:660) at android.widget.LinearLayout.onMeasure(LinearLayout.java:553) at android.view.View.measure(View.java:12723) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4698) at android.widget.FrameLayout.onMeasure(FrameLayout.java:293) at android.view.View.measure(View.java:12723) at android.support.v4.view.ViewPager.onMeasure(ViewPager.java:1447) at android.view.View.measure(View.java:12723) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4698) at android.widget.FrameLayout.onMeasure(FrameLayout.java:293) at android.view.View.measure(View.java:12723) at android.widget.LinearLayout.measureVertical(LinearLayout.java:812) at android.widget.LinearLayout.onMeasure(LinearLayout.java:553) at android.view.View.measure(View.java:12723) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4698) at android.widget.FrameLayout.onMeasure(FrameLayout.java:293) at com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2092) at android.view.View.measure(View.java:12723) at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1064) at android.view.ViewRootImpl.handleMessage(ViewRootImpl.java:2442) at android.os.Handler.dispatchMessage(Handler.java:99) at android.os.Looper.loop(Looper.java:137) at android.app.ActivityThread.main(ActivityThread.java:4575) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:511) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:789) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:556) at dalvik.system.NativeStart.main(Native Method) </code></pre> <p>Here is the code of my adapter where the error is coming from:</p> <pre><code>public class LazyAdapter extends BaseAdapter { private Activity activity; private ArrayList&lt;HashMap&lt;String, String&gt;&gt; data; private static LayoutInflater inflater=null; public ImageLoader imageLoader; public LazyAdapter(Activity a, ArrayList&lt;HashMap&lt;String, String&gt;&gt; d) { activity = a; data=d; inflater = (LayoutInflater)activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE); imageLoader=new ImageLoader(activity.getApplicationContext()); } public int getCount() { return data.size(); } public Object getItem(int position) { return position; } public long getItemId(int position) { return position; } public View getView(int position, View convertView, ViewGroup parent) { View vi=convertView; if(convertView==null) vi = inflater.inflate(R.layout.list_row, null); TextView title = (TextView)vi.findViewById(R.id.title); // title TextView date1 = (TextView)vi.findViewById(R.id.date1); // Release Date 1 (Usually US) TextView date2 = (TextView)vi.findViewById(R.id.date2); // Release Date 2 (Usually Europe) TextView date3 = (TextView)vi.findViewById(R.id.date3); // Release Date 3 (Usually Australia) TextView platforms = (TextView)vi.findViewById(R.id.platforms); // duration ImageView thumb_image=(ImageView)vi.findViewById(R.id.list_image); // thumb image HashMap&lt;String, String&gt; song = new HashMap&lt;String, String&gt;(); song = data.get(position); //This allows the Visibility of certain TextViews to be set via a string set by the online XML Map&lt;String, Integer&gt; map = new HashMap&lt;String, Integer&gt;(); map.put("visible", View.VISIBLE); map.put("gone", View.GONE); map.put("invisible", View.INVISIBLE); // Setting all values in listview title.setText(song.get(CustomizedListView.KEY_TITLE)); date1.setText(song.get(CustomizedListView.KEY_DATE1)); date2.setText(song.get(CustomizedListView.KEY_DATE2)); date3.setText(song.get(CustomizedListView.KEY_DATE3)); date2.setVisibility(map.get(song.get(CustomizedListView.KEY_DATE2VIS))); //This sets visibility via the KEY_DATE2VIS String using one of the terms in the Hashmap above date3.setVisibility(map.get(song.get(CustomizedListView.KEY_DATE3VIS))); platforms.setText(song.get(CustomizedListView.KEY_PLATFORMS)); imageLoader.DisplayImage(song.get(CustomizedListView.KEY_THUMB_URL), thumb_image); return vi; } } </code></pre> <p>Line 68 of the LazyAdapter.class is:</p> <pre><code>date2.setVisibility(map.get(song.get(CustomizedListView.KEY_DATE2VIS))); </code></pre> <p>If someone could help me fix my problem I would be very happy. Thanks for reading. If you need any other files don't hesitate to ask.</p> <p>FIX: I messed up the string names so it was an incredibly stupid error.</p>
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