Java tutorial
/* * Copyright (C) 2012 Dominik Schrmann <dominik@dominikschuermann.de> * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.sufficientlysecure.keychain.service; import org.sufficientlysecure.keychain.ui.dialog.ProgressDialogFragment; import org.sufficientlysecure.keychain.R; import android.app.Activity; import android.os.Bundle; import android.os.Handler; import android.os.Message; import android.support.v4.app.FragmentActivity; import android.widget.Toast; public class KeychainIntentServiceHandler extends Handler { // possible messages send from this service to handler on ui public static final int MESSAGE_OKAY = 1; public static final int MESSAGE_EXCEPTION = 2; public static final int MESSAGE_UPDATE_PROGRESS = 3; // possible data keys for messages public static final String DATA_ERROR = "error"; public static final String DATA_PROGRESS = "progress"; public static final String DATA_PROGRESS_MAX = "max"; public static final String DATA_MESSAGE = "message"; public static final String DATA_MESSAGE_ID = "message_id"; Activity mActivity; ProgressDialogFragment mProgressDialogFragment; public KeychainIntentServiceHandler(Activity activity) { this.mActivity = activity; } public KeychainIntentServiceHandler(Activity activity, ProgressDialogFragment progressDialogFragment) { this.mActivity = activity; this.mProgressDialogFragment = progressDialogFragment; } public KeychainIntentServiceHandler(Activity activity, int progressDialogMessageId, int progressDialogStyle) { this.mActivity = activity; this.mProgressDialogFragment = ProgressDialogFragment.newInstance(progressDialogMessageId, progressDialogStyle); } public void showProgressDialog(FragmentActivity activity) { mProgressDialogFragment.show(activity.getSupportFragmentManager(), "progressDialog"); } @Override public void handleMessage(Message message) { Bundle data = message.getData(); switch (message.arg1) { case MESSAGE_OKAY: mProgressDialogFragment.dismiss(); break; case MESSAGE_EXCEPTION: mProgressDialogFragment.dismiss(); // show error from service if (data.containsKey(DATA_ERROR)) { Toast.makeText(mActivity, mActivity.getString(R.string.errorMessage, data.getString(DATA_ERROR)), Toast.LENGTH_SHORT).show(); } break; case MESSAGE_UPDATE_PROGRESS: if (data.containsKey(DATA_PROGRESS) && data.containsKey(DATA_PROGRESS_MAX)) { // update progress from service if (data.containsKey(DATA_MESSAGE)) { mProgressDialogFragment.setProgress(data.getString(DATA_MESSAGE), data.getInt(DATA_PROGRESS), data.getInt(DATA_PROGRESS_MAX)); } else if (data.containsKey(DATA_MESSAGE_ID)) { mProgressDialogFragment.setProgress(data.getInt(DATA_MESSAGE_ID), data.getInt(DATA_PROGRESS), data.getInt(DATA_PROGRESS_MAX)); } else { mProgressDialogFragment.setProgress(data.getInt(DATA_PROGRESS), data.getInt(DATA_PROGRESS_MAX)); } } break; default: break; } } }