simplealerthandler.java

Android平台上即时通讯聊天工具源代码。 支持手机聊天。

/*
 * Copyright (C) 2007-2008 Esmertec AG.
 * Copyright (C) 2007-2008 The Android Open Source Project
 *
 * 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 com.android.im.app;

import android.app.Activity;
import android.app.AlertDialog;
import android.content.res.Resources;
import android.os.Handler;
import android.os.Looper;
import android.os.Message;
import android.widget.Toast;

import com.android.im.R;
import com.android.im.engine.Contact;
import com.android.im.engine.ContactListListener;
import com.android.im.engine.ImErrorInfo;

public class SimpleAlertHandler extends Handler {

    Activity mActivity;
    Resources mRes;

    public SimpleAlertHandler(Activity activity) {
        mActivity = activity;
        mRes = mActivity.getResources();
    }

    protected void promptDisconnectedEvent(Message msg) {
        long providerId = ((long)msg.arg1 << 32) | msg.arg2;
        ImApp app = ImApp.getApplication(mActivity);
        ProviderDef provider = app.getProvider(providerId);
        ImErrorInfo error = (ImErrorInfo) msg.obj;
        String promptMsg;
        if (error != null) {
            promptMsg = mActivity.getString(R.string.signed_out_prompt_with_error,
                    provider.mName, ErrorResUtils.getErrorRes(mRes, error.getCode()));
        } else {
            promptMsg = mActivity.getString(R.string.signed_out_prompt, provider.mName);
        }
        Toast.makeText(mActivity, promptMsg, Toast.LENGTH_SHORT).show();
    }

    public void registerForBroadcastEvents() {
         ImApp.getApplication(mActivity).registerForBroadcastEvent(
                ImApp.EVENT_CONNECTION_DISCONNECTED,
                this);
    }

    public void unregisterForBroadcastEvents() {
        ImApp.getApplication(mActivity).unregisterForBroadcastEvent(
                ImApp.EVENT_CONNECTION_DISCONNECTED,
                this);
    }

    public void showAlert(int titleId, int messageId) {
        showAlert(mRes.getString(titleId), mRes.getString(messageId));
    }

    public void showAlert(int titleId, CharSequence message) {
        showAlert(mRes.getString(titleId), message);
    }

    public void showAlert(CharSequence title, int messageId) {
        showAlert(title, mRes.getString(messageId));
    }

    public void showAlert(final CharSequence title, final CharSequence message) {
        if (Looper.myLooper() == getLooper()) {
            new AlertDialog.Builder(mActivity)
                    .setTitle(title)
                    .setMessage(message)
                    .setPositiveButton(R.string.ok, null)
                    .show();
        } else {
            post(new Runnable() {
                public void run() {
                    new AlertDialog.Builder(mActivity)
                            .setTitle(title)
                            .setMessage(message)
                            .setPositiveButton(R.string.ok, null)
                            .show();
                }
            });
        }
    }

    public void showServiceErrorAlert() {
        showAlert(R.string.error, R.string.service_error);
    }

    public void showContactError(int errorType, ImErrorInfo error,
            String listName, Contact contact) {
        int id = 0;
        switch (errorType) {
        case ContactListListener.ERROR_LOADING_LIST:
            id = R.string.load_contact_list_failed;
            break;

        case ContactListListener.ERROR_CREATING_LIST:
            id = R.string.add_list_failed;
            break;

        case ContactListListener.ERROR_BLOCKING_CONTACT:
            id = R.string.block_contact_failed;
            break;

        case ContactListListener.ERROR_UNBLOCKING_CONTACT:
            id = R.string.unblock_contact_failed;
            break;
        }

        String errorInfo = ErrorResUtils.getErrorRes(mRes, error.getCode());
        if (id != 0) {
            errorInfo = mRes.getText(id) + "\n" + errorInfo;
        }

        showAlert(R.string.error, errorInfo);
    }

}