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POPopulating Activity based on SQLite query and Join in Android
 

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  1. POPopulating Activity based on SQLite query and Join in Android
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    <p>I should start off by noting I am extremely new to Android Development so sorry if my question seems dumb. I am trying to query my SQLite Database in the application to dynamically create the content on the activity. Here is the query in my Database Helper file</p> <pre><code> public Cursor getWhereToEatActivity (int LocationId) { Cursor cursor = myDataBase.rawQuery("SELECT Location.locationId as _id,Location.title,Location.desc, location.address, location.hours, location.website, location.phone FROM " + "TripWhereToEat JOIN Trip ON TripWhereToEat.tripId = Trip.tripId JOIN Location ON " + "Location.locationId = TripWhereToEat.locationId where TripWhereToEat.tripId = ?", new String[] {Integer.toString(LocationId)}); cursor.moveToFirst(); return cursor; } </code></pre> <p>Here is where the item is selected:</p> <pre><code> @Override public void onItemClick(AdapterView&lt;?&gt; arg0, View arg1, int position, long arg3) { LocationListitem locationItem = (LocationListitem)lvItems.getItemAtPosition(position); int locationId = locationItem.getLocationId(); // Pass the ID into the next activity Map&lt;String, String&gt; parms = new HashMap&lt;String, String&gt;(); parms.put("locationId", Integer.toString(locationId)); if (listType.equals("whattosee")) { // switchActivity(WhatToSeeActivity.class, parms); } if (listType.equals("wheretostay")) { // switchActivity(WhereToStayActivity.class, parms); } if (listType.equals("wheretoeat")) { switchActivity(WhereToEatActivity.class, parms); } } }); </code></pre> <p>And here is the activity is switches to:</p> <pre><code>public class WhereToEatActivity extends FragmentActivityBase { private int LocationId; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_where_to_eat); AndroidApplication app = (AndroidApplication)getApplication(); DatabaseHelper myDbHelper = app.getDatabase(); // new DatabaseHelper(this); LocationId = Integer.valueOf(this.getParam("LocationId")); Cursor tripRecord = myDbHelper.getWhereToEatActivity(LocationId); tripRecord.moveToFirst(); if (!tripRecord.isAfterLast()) { String name = tripRecord.getString(tripRecord.getColumnIndex("title")); String title = tripRecord.getString(tripRecord.getColumnIndex("desc")); String image = tripRecord.getString(tripRecord.getColumnIndex("image")); String address = tripRecord.getString(tripRecord.getColumnIndex("address")); ImageView mainImageView = (ImageView)findViewById(R.id.image); int resId = getResources().getIdentifier("com.integrativelogic.roadtrip:drawable/"+image, null, null); Bitmap bitmap = BitmapFactory.decodeResource(getResources(),resId); if (bitmap != null) mainImageView.setImageBitmap (bitmap); TextView nameView = (TextView)findViewById(R.id.name); nameView.setText(name); TextView titleView = (TextView)findViewById(R.id.title); titleView.setText(Html.fromHtml(title)); titleView.setMovementMethod(LinkMovementMethod.getInstance()); TextView addressView = (TextView)findViewById(R.id.address); addressView.setText(address); } tripRecord.close(); } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.activity_main, menu); return true; } } </code></pre> <p>And this is the error I get from Logcat:</p> <pre><code>01-12 11:23:52.186: E/AndroidRuntime(15238): FATAL EXCEPTION: main 01-12 11:23:52.186: E/AndroidRuntime(15238): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.integrativelogic.roadtrip/com.integrativelogic.roadtrip.WhereToEatActivity}: java.lang.NumberFormatException: unable to parse '' as integer 01-12 11:23:52.186: E/AndroidRuntime(15238): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1821) 01-12 11:23:52.186: E/AndroidRuntime(15238): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1842) 01-12 11:23:52.186: E/AndroidRuntime(15238): at android.app.ActivityThread.access$1500(ActivityThread.java:132) 01-12 11:23:52.186: E/AndroidRuntime(15238): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1038) 01-12 11:23:52.186: E/AndroidRuntime(15238): at android.os.Handler.dispatchMessage(Handler.java:99) 01-12 11:23:52.186: E/AndroidRuntime(15238): at android.os.Looper.loop(Looper.java:150) 01-12 11:23:52.186: E/AndroidRuntime(15238): at android.app.ActivityThread.main(ActivityThread.java:4263) 01-12 11:23:52.186: E/AndroidRuntime(15238): at java.lang.reflect.Method.invokeNative(Native Method) 01-12 11:23:52.186: E/AndroidRuntime(15238): at java.lang.reflect.Method.invoke(Method.java:507) 01-12 11:23:52.186: E/AndroidRuntime(15238): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839) 01-12 11:23:52.186: E/AndroidRuntime(15238): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597) 01-12 11:23:52.186: E/AndroidRuntime(15238): at dalvik.system.NativeStart.main(Native Method) 01-12 11:23:52.186: E/AndroidRuntime(15238): Caused by: java.lang.NumberFormatException: unable to parse '' as integer 01-12 11:23:52.186: E/AndroidRuntime(15238): at java.lang.Integer.parseInt(Integer.java:362) 01-12 11:23:52.186: E/AndroidRuntime(15238): at java.lang.Integer.parseInt(Integer.java:332) 01-12 11:23:52.186: E/AndroidRuntime(15238): at java.lang.Integer.valueOf(Integer.java:506) 01-12 11:23:52.186: E/AndroidRuntime(15238): at com.integrativelogic.roadtrip.WhereToEatActivity.onCreate(WhereToEatActivity.java:27) 01-12 11:23:52.186: E/AndroidRuntime(15238): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1072) 01-12 11:23:52.186: E/AndroidRuntime(15238): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1785) </code></pre>
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    1. COWhat is your actual value of LocationId in Cursor tripRecord = myDbHelper.getWhereToEatActivity(LocationId);
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      1. USStefan de Bruijn
 

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