package com.example.hw4; /* * Bradlee Speice, Brandon Rodenmayer * ITIS 4180 * Homework 4 * MainActivity.java */ import java.net.URL; import java.util.ArrayList; import android.os.AsyncTask; import android.os.Bundle; import android.app.Activity; import android.app.ProgressDialog; import android.content.Context; import android.content.Intent; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.view.LayoutInflater; import android.view.Menu; import android.view.View; import android.view.ViewGroup; import android.widget.AdapterView; import android.widget.AdapterView.OnItemClickListener; import android.widget.BaseAdapter; import android.widget.Button; import android.widget.GridView; import android.widget.ImageView; import android.widget.LinearLayout; import android.widget.TextView; public class MainActivity extends Activity { ProgressDialog progress; LinearLayout root; GridView photoGrid; int[] imageUrlIds = {R.string.uncc_main_thumb, R.string.football_main_thumb, R.string.ifest_main_thumb, R.string.commencement_main_thumb }; int[] imageNames = {R.string.label_uncc, R.string.label_sports, R.string.label_ifest, R.string.label_commencement}; int[] thumbNames = {R.array.uncc_thumbs, R.array.football_thumbs, R.array.ifest_thumbs, R.array.commencement_thumbs}; ArrayList bitmapList = new ArrayList(); ArrayList bitmapNames = new ArrayList(); int downloadProgress; Intent galleryIntent; ImageAdapter imageAdapter; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); galleryIntent = new Intent(this, GalleryActivity.class); root = (LinearLayout)findViewById(R.id.layout_async); photoGrid = (GridView)findViewById(R.id.grid_async); downloadProgress = 0; //set the progress dialog progress = new ProgressDialog(this); progress.setMessage("Loading..."); progress.setCancelable(false); progress.show(); for(int x : imageUrlIds)//download images { new DownloadPhoto().execute(getString(x)); } //create exit button Button exit = (Button)findViewById(R.id.btn_exit_async); exit.setOnClickListener(new View.OnClickListener() { public void onClick(View v) { finish(); } }); } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.main, menu); return true; } private class DownloadPhoto extends AsyncTask { @Override protected Bitmap doInBackground(String... url) { Bitmap image = null; try { URL imageUrl = new URL(url[0]); image = BitmapFactory.decodeStream(imageUrl.openStream()); } catch(Exception e) { e.printStackTrace(); } return image; } @Override protected void onPostExecute(Bitmap result) { //already a default picture included in grid_schema.xml, so no need to set a blank pic bitmapList.add(result); bitmapNames.add(getString(imageNames[downloadProgress])); downloadProgress++; if(downloadProgress>=imageUrlIds.length) { progress.dismiss(); //all images are loaded, so set them in the grid imageAdapter = new ImageAdapter(photoGrid.getContext()); photoGrid.setAdapter(imageAdapter); photoGrid.setOnItemClickListener(new OnItemClickListener() { @Override public void onItemClick(AdapterView parent, View view, int position, long id) { //Send intent with R.array.label galleryIntent.putExtra("thumbsId", (int)(imageAdapter.getItem(position))); startActivity(galleryIntent); } }); } } } public class ImageAdapter extends BaseAdapter { private Context context; public ImageAdapter(Context context) { this.context = context; } @Override public int getCount() { return imageUrlIds.length; } @Override public Object getItem(int position) { return thumbNames[position]; } @Override public long getItemId(int position)//no purpose. only to fill the requirement of needing the method. { return position; } @Override public View getView(int position, View convertView, ViewGroup parent) { Holder holder = new Holder(); View vi = convertView; if(vi == null) { //create layout of what we want one grid section to look like vi = getLayoutInflater().inflate(R.layout.grid_schema, null); holder.textView = (TextView)vi.findViewById(R.id.textView1); holder.imageView = (ImageView)vi.findViewById(R.id.imageView1); vi.setTag(holder);//associate the views in the holder to the grid } else { holder = (Holder)(vi.getTag()); } //set the views in the grid to what was loaded holder.textView.setText(getString(R.string.download_error)); if(bitmapList.get(position)!=null) { holder.imageView.setImageBitmap(bitmapList.get(position)); holder.textView.setText(bitmapNames.get(position)); } return vi; } } //views included in one grid section static class Holder { TextView textView; ImageView imageView; } }