Java tutorial
/******************************************************************************* * Copyright (c) 2013 Nordic Semiconductor. All Rights Reserved. * * The information contained herein is property of Nordic Semiconductor ASA. * Terms and conditions of usage are described in detail in NORDIC SEMICONDUCTOR STANDARD SOFTWARE LICENSE AGREEMENT. * Licensees are granted free, non-transferable use of the information. NO WARRANTY of ANY KIND is provided. * This heading must NOT be removed from the file. ******************************************************************************/ package no.android.proxime; import java.util.List; import no.android.proxime.adapter.AppAdapter; import no.android.proxime.R; import android.app.Activity; import android.content.ComponentName; import android.content.Intent; import android.content.pm.PackageManager; import android.content.pm.ResolveInfo; import android.content.res.Configuration; import android.graphics.Color; import android.graphics.ColorMatrix; import android.graphics.ColorMatrixColorFilter; import android.net.Uri; import android.os.Bundle; import android.support.v4.app.ActionBarDrawerToggle; import android.support.v4.view.GravityCompat; import android.support.v4.widget.DrawerLayout; import android.view.LayoutInflater; import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.view.ViewGroup; import android.widget.GridView; import android.widget.ImageView; import android.widget.TextView; import android.widget.Toast; public class FeaturesActivity extends Activity { private static final String UTILS_CATEGORY = "no.nordicsemi.android.nrftoolbox.UTILS"; private static final String MCP_PACKAGE = "no.nordicsemi.android.mcp"; private static final String MCP_CLASS = MCP_PACKAGE + ".DeviceListActivity"; private static final String MCP_MARKET_URI = "market://details?id=no.nordicsemi.android.mcp"; private DrawerLayout mDrawerLayout; private ActionBarDrawerToggle mDrawerToggle; @Override protected void onCreate(final Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_features); // ensure that Bluetooth exists if (!ensureBLEExists()) finish(); final DrawerLayout drawer = mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout); drawer.setDrawerShadow(R.drawable.drawer_shadow, GravityCompat.START); // Set the drawer toggle as the DrawerListener drawer.setDrawerListener(mDrawerToggle = new ActionBarDrawerToggle(this, mDrawerLayout, R.drawable.ic_drawer, R.string.drawer_open, R.string.drawer_close)); // setup plug-ins in the drawer setupPluginsInDrawer((ViewGroup) drawer.findViewById(R.id.plugin_container)); // configure the app grid final GridView grid = (GridView) findViewById(R.id.grid); grid.setAdapter(new AppAdapter(this)); grid.setEmptyView(findViewById(android.R.id.empty)); getActionBar().setDisplayHomeAsUpEnabled(true); } @Override public boolean onCreateOptionsMenu(final Menu menu) { getMenuInflater().inflate(R.menu.help, menu); return true; } @Override protected void onPostCreate(final Bundle savedInstanceState) { super.onPostCreate(savedInstanceState); // Sync the toggle state after onRestoreInstanceState has occurred. mDrawerToggle.syncState(); } @Override public void onConfigurationChanged(final Configuration newConfig) { super.onConfigurationChanged(newConfig); mDrawerToggle.onConfigurationChanged(newConfig); } @Override public boolean onOptionsItemSelected(final MenuItem item) { // Pass the event to ActionBarDrawerToggle, if it returns // true, then it has handled the app icon touch event if (mDrawerToggle.onOptionsItemSelected(item)) { return true; } switch (item.getItemId()) { case R.id.action_about: final AppHelpFragment fragment = AppHelpFragment.getInstance(R.string.about_text, true); fragment.show(getFragmentManager(), null); break; } return true; } private void setupPluginsInDrawer(final ViewGroup container) { final LayoutInflater inflater = LayoutInflater.from(this); final PackageManager pm = getPackageManager(); // look for Master Control Panel final Intent mcpIntent = new Intent(Intent.ACTION_MAIN); mcpIntent.setClassName(MCP_PACKAGE, MCP_CLASS); final ResolveInfo mcpInfo = pm.resolveActivity(mcpIntent, 0); // configure link to Master Control Panel final TextView mcpItem = (TextView) container.findViewById(R.id.link_mcp); if (mcpInfo == null) { mcpItem.setTextColor(Color.GRAY); ColorMatrix grayscale = new ColorMatrix(); grayscale.setSaturation(0.0f); mcpItem.getCompoundDrawables()[0].setColorFilter(new ColorMatrixColorFilter(grayscale)); } mcpItem.setOnClickListener(new View.OnClickListener() { @Override public void onClick(final View v) { Intent action = mcpIntent; if (mcpInfo == null) action = new Intent(Intent.ACTION_VIEW, Uri.parse(MCP_MARKET_URI)); action.setFlags(Intent.FLAG_ACTIVITY_NO_ANIMATION); startActivity(action); mDrawerLayout.closeDrawers(); } }); // look for other plug-ins final Intent utilsIntent = new Intent(Intent.ACTION_MAIN); utilsIntent.addCategory(UTILS_CATEGORY); final List<ResolveInfo> appList = pm.queryIntentActivities(utilsIntent, 0); for (final ResolveInfo info : appList) { final View item = inflater.inflate(R.layout.drawer_plugin, container, false); final ImageView icon = (ImageView) item.findViewById(android.R.id.icon); final TextView label = (TextView) item.findViewById(android.R.id.text1); label.setText(info.loadLabel(pm)); icon.setImageDrawable(info.loadIcon(pm)); item.setOnClickListener(new View.OnClickListener() { @Override public void onClick(final View v) { final Intent intent = new Intent(); intent.setComponent(new ComponentName(info.activityInfo.packageName, info.activityInfo.name)); intent.setFlags(Intent.FLAG_ACTIVITY_NO_ANIMATION); startActivity(intent); mDrawerLayout.closeDrawers(); } }); container.addView(item); } } private boolean ensureBLEExists() { if (!getPackageManager().hasSystemFeature(PackageManager.FEATURE_BLUETOOTH_LE)) { Toast.makeText(this, R.string.no_ble, Toast.LENGTH_LONG).show(); return false; } return true; } }