Java tutorial
/* Copyright 2013, 2014 joshua.tee@gmail.com This file is part of wX. wX is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. wX is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with wX. If not, see <http://www.gnu.org/licenses/>. */ package joshuatee.wx; import android.os.AsyncTask; import android.os.Bundle; import android.preference.PreferenceManager; import android.content.res.Configuration; import android.graphics.Bitmap; import android.graphics.Color; import android.graphics.drawable.BitmapDrawable; import android.graphics.drawable.ColorDrawable; import android.graphics.drawable.Drawable; import android.graphics.drawable.LayerDrawable; import android.support.v4.app.ActionBarDrawerToggle; import android.support.v4.widget.DrawerLayout; import android.util.DisplayMetrics; import android.view.MenuItem; import android.view.View; import android.view.Window; import android.view.ViewGroup.LayoutParams; import android.widget.AdapterView; import android.widget.ArrayAdapter; import android.widget.ListView; public class SPCCompmapActivity extends CommonActionBarFragment { private DrawerLayout mDrawerLayout; private ListView mDrawerList; String layer_str = ""; private ActionBarDrawerToggle mDrawerToggle; final String[] model_params_labels = new String[] { "IR SATL", "SLP (mb)", "TEMP (F)", "DEWPT (F)", "10m BKNT", "CAPE/CINH", "HLCY/SHEAR", "PRES TEND", "MCONV", "KIND/PWAI", "12H PCPN", "SFC OBS MAP", "LAPSE RATES", "850 WAA/WIND", "700 INFO", "700-500 MRH", "500 HGHT/ABSV", "700-500 UVV", "300 WINDS", "DAY 1 Outlook (94O)", "HPC Fronts (90F)", "HPC 6-hr QPF (92E)", }; final String[] url_index = new String[] { "16", "7", "1", "0", "8", "2", "21", "3", "4", "5", "6", "9", "10", "11", "12", "13", "14", "15", "17", "18", "19", "20", }; DisplayMetrics dm; String img_url = ""; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS); preferences = PreferenceManager.getDefaultSharedPreferences(this); theme_blue_current = preferences.getString("THEME_BLUE", ""); setTheme(Utility.Theme(theme_blue_current)); setContentView(R.layout.activity_spccompmap); dm = new DisplayMetrics(); this.getWindowManager().getDefaultDisplay().getMetrics(dm); mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout); mDrawerList = (ListView) findViewById(R.id.left_drawer); mDrawerList.setAdapter(new ArrayAdapter<String>(this, R.layout.drawer_list_item, model_params_labels)); mDrawerList.setOnItemClickListener(new DrawerItemClickListener()); mDrawerToggle = new ActionBarDrawerToggle(this, mDrawerLayout, R.drawable.drawer, R.string.drawer_open, R.string.drawer_close) { public void onDrawerClosed(View view) { super.onDrawerClosed(view); } public void onDrawerOpened(View drawerView) { super.onDrawerOpened(drawerView); } }; mDrawerLayout.setDrawerListener(mDrawerToggle); getActionBar().setDisplayHomeAsUpEnabled(true); getActionBar().setHomeButtonEnabled(true); img_url = "http://www.spc.noaa.gov/exper/compmap/basemap.gif"; new GetContent().executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR); } private class DrawerItemClickListener implements ListView.OnItemClickListener { @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { selectItem(position); } } private void selectItem(int position) { mDrawerList.setItemChecked(position, false); mDrawerLayout.closeDrawer(mDrawerList); String position_str = url_index[position]; if (model_params_labels[position].contains("(on)")) { model_params_labels[position] = model_params_labels[position].replaceAll("\\(on\\) ", ""); layer_str = layer_str.replaceAll("a" + position_str + ":", ""); new GetContent().executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR); } else { model_params_labels[position] = "(on) " + model_params_labels[position]; layer_str = layer_str + "a" + position_str + ":"; new GetContent().executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR); } } private class GetContent extends AsyncTask<String, String, String> { Bitmap bitmap; Drawable[] layers; LayerDrawable layerDrawable; ColorDrawable cd = new ColorDrawable(Color.WHITE); @Override protected String doInBackground(String... params) { bitmap = Utility.getBitmapFromURL(img_url); String[] layer_str_arr = layer_str.split(":"); layers = new Drawable[layer_str_arr.length + 2]; layers[0] = cd; layers[1] = new BitmapDrawable(getResources(), bitmap); int j = 0; for (j = 0; j < layer_str_arr.length; j++) { layer_str_arr[j] = layer_str_arr[j].replaceAll("a", ""); bitmap = Utility .getBitmapFromURL("http://www.spc.noaa.gov/exper/compmap/" + layer_str_arr[j] + ".gif"); bitmap = UtilityImg.eraseBG(bitmap, -16777216); layers[j + 2] = new BitmapDrawable(getResources(), bitmap); } layerDrawable = new LayerDrawable(layers); return "Executed"; } @Override protected void onPostExecute(String result) { TouchImageView2 img = (TouchImageView2) findViewById(R.id.iv); int width = dm.widthPixels; int height = width * layerDrawable.getIntrinsicHeight() / layerDrawable.getIntrinsicWidth(); LayoutParams params_iv = (LayoutParams) img.getLayoutParams(); params_iv.height = height; params_iv.width = width; img.setLayoutParams(params_iv); setProgressBarIndeterminateVisibility(false); img.setImageDrawable(layerDrawable); img.setMaxZoom(4f); } @Override protected void onPreExecute() { setProgressBarIndeterminateVisibility(true); } @Override protected void onProgressUpdate(String... values) { } } protected void onPostCreate(Bundle savedInstanceState) { super.onPostCreate(savedInstanceState); mDrawerToggle.syncState(); } @Override public void onConfigurationChanged(Configuration newConfig) { super.onConfigurationChanged(newConfig); mDrawerToggle.onConfigurationChanged(newConfig); } public boolean onOptionsItemSelected(MenuItem item) { if (mDrawerToggle.onOptionsItemSelected(item)) { return true; } return super.onOptionsItemSelected(item); } }