Java tutorial
package com.nghianh.giaitriviet.fragment; import android.annotation.SuppressLint; import android.app.AlertDialog; import android.content.ActivityNotFoundException; import android.content.Context; import android.content.DialogInterface; import android.content.Intent; import android.content.SharedPreferences; import android.net.Uri; import android.os.Bundle; import android.preference.Preference; import android.preference.Preference.OnPreferenceChangeListener; import android.preference.Preference.OnPreferenceClickListener; import android.preference.PreferenceCategory; import android.preference.PreferenceManager; import android.preference.PreferenceScreen; import android.preference.SwitchPreference; import android.support.v4.preference.PreferenceFragment; import android.text.Html; import android.widget.Toast; import com.nghianh.giaitriviet.R; import com.nghianh.giaitriviet.activity.MainActivity; import com.nghianh.giaitriviet.billing.BillingProcessor; import com.nghianh.giaitriviet.billing.TransactionDetails; import com.nghianh.giaitriviet.providers.rss.ServiceStarter; import com.nghianh.giaitriviet.util.Log; /** * This fragmnt is used to show a settings page to the user */ public class SettingsFragment extends PreferenceFragment implements BillingProcessor.IBillingHandler { public static String SHOW_DIALOG = "show_dialog"; private static String PRODUCT_ID_BOUGHT = "item_1_bought"; //You can change this setting if you would like to disable rate-my-app boolean HIDE_RATE_MY_APP = false; String start; String menu; BillingProcessor bp; Preference preferencepurchase; AlertDialog dialog; public static boolean getIsPurchased(Context c) { SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(c); boolean prefson = prefs.getBoolean(PRODUCT_ID_BOUGHT, false); return prefson; } @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); addPreferencesFromResource(R.xml.activity_settings); // open play store page Preference preferencerate = findPreference("rate"); preferencerate.setOnPreferenceClickListener(new OnPreferenceClickListener() { @Override public boolean onPreferenceClick(Preference preference) { Uri uri = Uri.parse("market://details?id=" + getActivity().getPackageName()); Intent goToMarket = new Intent(Intent.ACTION_VIEW, uri); try { startActivity(goToMarket); } catch (ActivityNotFoundException e) { Toast.makeText(getActivity(), "Could not open Play Store", Toast.LENGTH_SHORT).show(); return true; } return true; } }); final ServiceStarter alarm = new ServiceStarter(); // open default page Preference preferenceservice = findPreference("switchRss"); String push = getString(R.string.rss_push_url); if (null == push || push.equals("")) { PreferenceCategory general = (PreferenceCategory) findPreference("general"); general.removePreference(preferenceservice); } preferenceservice.setOnPreferenceChangeListener(new OnPreferenceChangeListener() { @SuppressLint("CommitPrefEdits") @Override public boolean onPreferenceChange(Preference preference, Object newvalue) { boolean switched = ((SwitchPreference) preference).isChecked(); if (switched == false) { alarm.setAlarm(getActivity()); } else { alarm.cancelAlarm(getActivity()); } return true; } }); // open about dialog Preference preferenceabout = findPreference("about"); preferenceabout.setOnPreferenceClickListener(new OnPreferenceClickListener() { @Override public boolean onPreferenceClick(Preference preference) { AlertDialog.Builder ab = null; ab = new AlertDialog.Builder(getActivity()); ab.setMessage(Html.fromHtml(getResources().getString(R.string.about_text))); ab.setPositiveButton(getResources().getString(R.string.ok), null); ab.setTitle(getResources().getString(R.string.about_header)); ab.show(); return true; } }); // purchase preferencepurchase = findPreference("purchase"); String license = getResources().getString(R.string.google_play_license); if (null != license && !license.equals("")) { bp = new BillingProcessor(getActivity(), license, this); bp.loadOwnedPurchasesFromGoogle(); preferencepurchase.setOnPreferenceClickListener(new OnPreferenceClickListener() { @Override public boolean onPreferenceClick(Preference preference) { bp.purchase(getActivity(), PRODUCT_ID()); return true; } }); if (getIsPurchased(getActivity())) { preferencepurchase.setIcon(R.drawable.ic_action_action_done); } } else { PreferenceScreen preferenceScreen = (PreferenceScreen) findPreference("preferenceScreen"); PreferenceCategory billing = (PreferenceCategory) findPreference("billing"); preferenceScreen.removePreference(billing); } String[] extra = getArguments().getStringArray(MainActivity.FRAGMENT_DATA); if (null != extra && extra.length != 0 && extra[0].equals(SHOW_DIALOG)) { AlertDialog.Builder builder = new AlertDialog.Builder(getActivity()); // Add the buttons builder.setPositiveButton(R.string.settings_purchase, new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int id) { bp.purchase(getActivity(), PRODUCT_ID()); } }); builder.setNegativeButton(R.string.cancel, new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int id) { // User cancelled the dialog } }); builder.setTitle(getResources().getString(R.string.dialog_purchase_title)); builder.setMessage(getResources().getString(R.string.dialog_purchase)); // Create the AlertDialog dialog = builder.create(); dialog.show(); } if (HIDE_RATE_MY_APP) { PreferenceCategory other = (PreferenceCategory) findPreference("other"); Preference preference = findPreference("rate"); other.removePreference(preference); } } @Override public void onBillingInitialized() { /* * Called when BillingProcessor was initialized and it's ready to * purchase */ } @Override public void onProductPurchased(String productId, TransactionDetails details) { if (productId.equals(PRODUCT_ID())) { setIsPurchased(true, getActivity()); preferencepurchase.setIcon(R.drawable.ic_action_action_done); Toast.makeText(getActivity(), getResources().getString(R.string.settings_purchase_success), Toast.LENGTH_LONG).show(); } Log.v("INFO", "Purchase purchased"); } @Override public void onBillingError(int errorCode, Throwable error) { Toast.makeText(getActivity(), getResources().getString(R.string.settings_purchase_fail), Toast.LENGTH_LONG) .show(); Log.v("INFO", "Error"); } @Override public void onPurchaseHistoryRestored() { if (bp.isPurchased(PRODUCT_ID())) { setIsPurchased(true, getActivity()); Log.v("INFO", "Purchase actually restored"); preferencepurchase.setIcon(R.drawable.ic_action_action_done); if (dialog != null) dialog.cancel(); Toast.makeText(getActivity(), getResources().getString(R.string.settings_restore_purchase_success), Toast.LENGTH_LONG).show(); } Log.v("INFO", "Purchase restored called"); } public void setIsPurchased(boolean purchased, Context c) { SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(c); SharedPreferences.Editor editor = prefs.edit(); editor.putBoolean(PRODUCT_ID_BOUGHT, purchased); editor.apply(); } private String PRODUCT_ID() { return getResources().getString(R.string.product_id); } public void onActivityResult(final int requestCode, final int resultCode, final Intent intent) { bp.handleActivityResult(requestCode, resultCode, intent); } @Override public void onDestroy() { if (bp != null) bp.release(); super.onDestroy(); } }