stringArrayList.add("Graph Theory - Types of Graphs"); stringArrayList.add("Graph Theory - Trees"); stringArrayList.add("Graph Theory - Connectivity"); stringArrayList.add("Graph Theory - Coverings"); stringArrayList.add("Cut Set and Cut Vertex of Graph"); stringArrayList.add("Graph Theory - Matchings"); stringArrayList.add("Graph Theory - Independent Sets"); stringArrayList.add("Graph Theory - Coloring"); stringArrayList.add("Graph Theory - Isomorphism"); stringArrayList.add("Graph Theory - Traversability"); stringArrayList.add("Graph Theory - Examples"); stringArrayList.add("Graph Theory - Fundamentals"); stringArrayList.add("Graph Theory - Basic Properties"); stringArrayList.add("Subgraphs"); stringArrayList.add("Walks, Trails, Paths, Cycles and Circuits"); stringArrayList.add("Euler Graph"); stringArrayList.add("Mathematics | Euler and Hamiltonian Paths"); stringArrayList.add("Planar Graphs"); stringArrayList.add("Non-planar Graphs"); stringArrayList.add("Chromatic Number"); stringArrayList.add("Rooted Trees"); stringArrayList.add("Spanning Tree of a Graph"); stringArrayList.add("Discrete Mathematics - Counting Theory"); stringArrayList.add("The Inclusion-Exclusion Principle"); stringArrayList.add("Permutations"); stringArrayList.add("Pascal's Identity"); stringArrayList.add("Binomial theorem"); stringArrayList.add("Pólya–Redfield Counting"); stringArrayList.add("Exponential Generating Functions"); stringArrayList.add("Network flow");


















if (selected.equals("Graph Theory - Types of Graphs")) {                     Intent i = new Intent(MainActivity.this, DetailActivity.class);                     i.putExtra("id", position);                     i.putExtra("url", "file:///android_asset/.htm");                      i.putExtra("value", adapter.getItem(position));  startActivity(i); } if (selected.equals("Graph Theory - Trees")) {                     Intent i = new Intent(MainActivity.this, DetailActivity.class);                     i.putExtra("id", position);                     i.putExtra("url", "file:///android_asset/.htm");                      i.putExtra("value", adapter.getItem(position));  startActivity(i); } if (selected.equals("Graph Theory - Connectivity")) {                     Intent i = new Intent(MainActivity.this, DetailActivity.class);                     i.putExtra("id", position);                     i.putExtra("url", "file:///android_asset/.htm");                      i.putExtra("value", adapter.getItem(position));  startActivity(i); } if (selected.equals("Graph Theory - Coverings")) {                     Intent i = new Intent(MainActivity.this, DetailActivity.class);                     i.putExtra("id", position);                     i.putExtra("url", "file:///android_asset/.htm");                      i.putExtra("value", adapter.getItem(position));  startActivity(i); } if (selected.equals("Cut Set and Cut Vertex of Graph")) {                     Intent i = new Intent(MainActivity.this, DetailActivity.class);                     i.putExtra("id", position);                     i.putExtra("url", "file:///android_asset/.htm");                      i.putExtra("value", adapter.getItem(position));  startActivity(i); } if (selected.equals("Graph Theory - Matchings")) {                     Intent i = new Intent(MainActivity.this, DetailActivity.class);                     i.putExtra("id", position);                     i.putExtra("url", "file:///android_asset/.htm");                      i.putExtra("value", adapter.getItem(position));  startActivity(i); } if (selected.equals("Graph Theory - Independent Sets")) {                     Intent i = new Intent(MainActivity.this, DetailActivity.class);                     i.putExtra("id", position);                     i.putExtra("url", "file:///android_asset/.htm");                      i.putExtra("value", adapter.getItem(position));  startActivity(i); } if (selected.equals("Graph Theory - Coloring")) {                     Intent i = new Intent(MainActivity.this, DetailActivity.class);                     i.putExtra("id", position);                     i.putExtra("url", "file:///android_asset/.htm");                      i.putExtra("value", adapter.getItem(position));  startActivity(i); } if (selected.equals("Graph Theory - Isomorphism")) {                     Intent i = new Intent(MainActivity.this, DetailActivity.class);                     i.putExtra("id", position);                     i.putExtra("url", "file:///android_asset/.htm");                      i.putExtra("value", adapter.getItem(position));  startActivity(i); } if (selected.equals("Graph Theory - Traversability")) {                     Intent i = new Intent(MainActivity.this, DetailActivity.class);                     i.putExtra("id", position);                     i.putExtra("url", "file:///android_asset/.htm");                      i.putExtra("value", adapter.getItem(position));  startActivity(i); } if (selected.equals("Graph Theory - Examples")) {                     Intent i = new Intent(MainActivity.this, DetailActivity.class);                     i.putExtra("id", position);                     i.putExtra("url", "file:///android_asset/.htm");                      i.putExtra("value", adapter.getItem(position));  startActivity(i); } if (selected.equals("Graph Theory - Fundamentals")) {                     Intent i = new Intent(MainActivity.this, DetailActivity.class);                     i.putExtra("id", position);                     i.putExtra("url", "file:///android_asset/.htm");                      i.putExtra("value", adapter.getItem(position));  startActivity(i); } if (selected.equals("Graph Theory - Basic Properties")) {                     Intent i = new Intent(MainActivity.this, DetailActivity.class);                     i.putExtra("id", position);                     i.putExtra("url", "file:///android_asset/.htm");                      i.putExtra("value", adapter.getItem(position));  startActivity(i); } if (selected.equals("Subgraphs")) {                     Intent i = new Intent(MainActivity.this, DetailActivity.class);                     i.putExtra("id", position);                     i.putExtra("url", "file:///android_asset/.htm");                      i.putExtra("value", adapter.getItem(position));  startActivity(i); } if (selected.equals("Walks, Trails, Paths, Cycles and Circuits")) {                     Intent i = new Intent(MainActivity.this, DetailActivity.class);                     i.putExtra("id", position);                     i.putExtra("url", "file:///android_asset/.htm");                      i.putExtra("value", adapter.getItem(position));  startActivity(i); } if (selected.equals("Euler Graph")) {                     Intent i = new Intent(MainActivity.this, DetailActivity.class);                     i.putExtra("id", position);                     i.putExtra("url", "file:///android_asset/.htm");                      i.putExtra("value", adapter.getItem(position));  startActivity(i); } if (selected.equals("Mathematics | Euler and Hamiltonian Paths")) {                     Intent i = new Intent(MainActivity.this, DetailActivity.class);                     i.putExtra("id", position);                     i.putExtra("url", "file:///android_asset/.htm");                      i.putExtra("value", adapter.getItem(position));  startActivity(i); } if (selected.equals("Planar Graphs")) {                     Intent i = new Intent(MainActivity.this, DetailActivity.class);                     i.putExtra("id", position);                     i.putExtra("url", "file:///android_asset/.htm");                      i.putExtra("value", adapter.getItem(position));  startActivity(i); } if (selected.equals("Non-planar Graphs")) {                     Intent i = new Intent(MainActivity.this, DetailActivity.class);                     i.putExtra("id", position);                     i.putExtra("url", "file:///android_asset/.htm");                      i.putExtra("value", adapter.getItem(position));  startActivity(i); } if (selected.equals("Chromatic Number")) {                     Intent i = new Intent(MainActivity.this, DetailActivity.class);                     i.putExtra("id", position);                     i.putExtra("url", "file:///android_asset/.htm");                      i.putExtra("value", adapter.getItem(position));  startActivity(i); } if (selected.equals("Rooted Trees")) {                     Intent i = new Intent(MainActivity.this, DetailActivity.class);                     i.putExtra("id", position);                     i.putExtra("url", "file:///android_asset/.htm");                      i.putExtra("value", adapter.getItem(position));  startActivity(i); } if (selected.equals("Spanning Tree of a Graph")) {                     Intent i = new Intent(MainActivity.this, DetailActivity.class);                     i.putExtra("id", position);                     i.putExtra("url", "file:///android_asset/.htm");                      i.putExtra("value", adapter.getItem(position));  startActivity(i); } if (selected.equals("Discrete Mathematics - Counting Theory")) {                     Intent i = new Intent(MainActivity.this, DetailActivity.class);                     i.putExtra("id", position);                     i.putExtra("url", "file:///android_asset/.htm");                      i.putExtra("value", adapter.getItem(position));  startActivity(i); } if (selected.equals("The Inclusion-Exclusion Principle")) {                     Intent i = new Intent(MainActivity.this, DetailActivity.class);                     i.putExtra("id", position);                     i.putExtra("url", "file:///android_asset/.htm");                      i.putExtra("value", adapter.getItem(position));  startActivity(i); } if (selected.equals("Permutations")) {                     Intent i = new Intent(MainActivity.this, DetailActivity.class);                     i.putExtra("id", position);                     i.putExtra("url", "file:///android_asset/.htm");                      i.putExtra("value", adapter.getItem(position));  startActivity(i); } if (selected.equals("Pascal's Identity")) {                     Intent i = new Intent(MainActivity.this, DetailActivity.class);                     i.putExtra("id", position);                     i.putExtra("url", "file:///android_asset/.htm");                      i.putExtra("value", adapter.getItem(position));  startActivity(i); } if (selected.equals("Binomial theorem")) {                     Intent i = new Intent(MainActivity.this, DetailActivity.class);                     i.putExtra("id", position);                     i.putExtra("url", "file:///android_asset/.htm");                      i.putExtra("value", adapter.getItem(position));  startActivity(i); } if (selected.equals("Pólya–Redfield Counting")) {                     Intent i = new Intent(MainActivity.this, DetailActivity.class);                     i.putExtra("id", position);                     i.putExtra("url", "file:///android_asset/.htm");                      i.putExtra("value", adapter.getItem(position));  startActivity(i); } if (selected.equals("Exponential Generating Functions")) {                     Intent i = new Intent(MainActivity.this, DetailActivity.class);                     i.putExtra("id", position);                     i.putExtra("url", "file:///android_asset/.htm");                      i.putExtra("value", adapter.getItem(position));  startActivity(i); } if (selected.equals("Network flow")) {                     Intent i = new Intent(MainActivity.this, DetailActivity.class);                     i.putExtra("id", position);                     i.putExtra("url", "file:///android_asset/.htm");                      i.putExtra("value", adapter.getItem(position));  startActivity(i); }