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POAnother Method for calling activities.?
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  1. POAnother Method for calling activities.?
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    copied!<p>So here is my code.. I have a lot activities to be switched between and this code seems to work perfectly. But I was wondering if there is another method which is less complicate and easy to implement rather than "SWITCH CASE" method.</p> <p>enter code here</p> <pre><code>package com.prashant.dfs; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import android.os.Bundle; import android.app.Activity; import android.content.Intent; import android.view.Menu; import android.view.View; import android.widget.ExpandableListView; import android.widget.ExpandableListView.OnChildClickListener; public class Chapter_1_full extends Activity { ExpandableListAdapter listAdapter; ExpandableListView expListView; List&lt;String&gt; ListDataHeader; HashMap&lt;String,List&lt;String&gt;&gt; listDataChild; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_chapter_1_full); //get the listView(expand) expListView = (ExpandableListView) findViewById(R.id.ch1_expand); //prepareDataList prepareListData(); listAdapter=new ExpandableListAdapter(this, ListDataHeader, listDataChild); expListView.setAdapter(listAdapter); } private void prepareListData() { ListDataHeader = new ArrayList&lt;String&gt;(); listDataChild=new HashMap&lt;String, List&lt;String&gt;&gt;(); //Adding child Data ListDataHeader.add("1.1 Introductin to Algorithms"); ListDataHeader.add("1.2 Data Structures"); ListDataHeader.add("1.3 ADT"); List&lt;String&gt; Intro = new ArrayList&lt;String&gt;(); Intro.add("Algoithem Design "); Intro.add("Flowcharting"); Intro.add("Pseudo-Language"); List&lt;String&gt; dataStructure = new ArrayList&lt;String&gt;(); dataStructure.add("Type of Data Structure"); dataStructure.add("Primitive and Non-Primitive"); dataStructure.add("Linear and Non-Linear"); dataStructure.add("Static and Dynamic"); List&lt;String&gt; ADT = new ArrayList&lt;String&gt;(); ADT.add("Datat Object"); listDataChild.put(ListDataHeader.get(0),Intro); listDataChild.put(ListDataHeader.get(1),dataStructure); listDataChild.put(ListDataHeader.get(2),ADT); expListView.setOnChildClickListener(new OnChildClickListener() { @Override public boolean onChildClick(ExpandableListView parent, View v, int groupPosition, int childPosition, long id) { final Object childObj=parent.getExpandableListAdapter().getChild(groupPosition, childPosition); if(childObj!=null) { switch (groupPosition) { case 0: { switch (childPosition) { case 0: { startActivity(new Intent(Chapter_1_full.this,TestActivity.class)); break; } case 1: { startActivity(new Intent(Chapter_1_full.this,TestActivity2.class)); break; } case 2: { startActivity(new Intent(Chapter_1_full.this,TestActivity3.class)); break; } } break; } case 1: startActivity(new Intent(Chapter_1_full.this,TestActivity4.class)); } } return true; } }); } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.chapter_1_full, menu); return true; } </code></pre> <p>}</p>
 

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