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   源码介绍

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package com.bmob.im.demo.ui;

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentTransaction;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import cn.bmob.im.BmobChatManager;
import cn.bmob.im.BmobNotifyManager;
import cn.bmob.im.bean.BmobInvitation;
import cn.bmob.im.bean.BmobMsg;
import cn.bmob.im.db.BmobDB;
import cn.bmob.im.inteface.EventListener;

import com.bmob.im.demo.CustomApplcation;
import com.bmob.im.demo.MyMessageReceiver;
import com.bmob.im.demo.R;
import com.bmob.im.demo.ui.fragment.ContactFragment;
import com.bmob.im.demo.ui.fragment.RecentFragment;
import com.bmob.im.demo.ui.fragment.SettingsFragment;

/**
 * 登陆
 * @ClassName: MainActivity
 * @Description: TODO
 * @author smile
 * @date 2014-5-29 下午2:45:35
 */
public class MainActivity extends ActivityBase implements EventListener{

	private Button[] mTabs;
	private ContactFragment contactFragment;
	private RecentFragment recentFragment;
	private SettingsFragment settingFragment;
	private Fragment[] fragments;
	private int index;
	private int currentTabIndex;
	
	ImageView iv_recent_tips,iv_contact_tips;//消息提示
	
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		initView();
		initTab();
	}

	private void initView(){
		mTabs = new Button[3];
		mTabs[0] = (Button) findViewById(R.id.btn_message);
		mTabs[1] = (Button) findViewById(R.id.btn_contract);
		mTabs[2] = (Button) findViewById(R.id.btn_set);
		iv_recent_tips = (ImageView)findViewById(R.id.iv_recent_tips);
		iv_contact_tips = (ImageView)findViewById(R.id.iv_contact_tips);
		
		mTabs[0].setSelected(true);
	}
	
	private void initTab(){
		contactFragment = new ContactFragment();
		recentFragment = new RecentFragment();
		settingFragment = new SettingsFragment();
		fragments = new Fragment[] {recentFragment, contactFragment, settingFragment };
		// 添加显示第一个fragment
		getSupportFragmentManager().beginTransaction().add(R.id.fragment_container, recentFragment).
			add(R.id.fragment_container, contactFragment).hide(contactFragment).show(recentFragment).commit();
	}
	
	/**
	 * button点击事件
	 * @param view
	 */
	public void onTabSelect(View view) {
		switch (view.getId()) {
		case R.id.btn_message:
			index = 0;
			break;
		case R.id.btn_contract:
			index = 1;
			break;
		case R.id.btn_set:
			index = 2;
			break;
		}
		if (currentTabIndex != index) {
			FragmentTransaction trx = getSupportFragmentManager().beginTransaction();
			trx.hide(fragments[currentTabIndex]);
			if (!fragments[index].isAdded()) {
				trx.add(R.id.fragment_container, fragments[index]);
			}
			trx.show(fragments[index]).commit();
		}
		mTabs[currentTabIndex].setSelected(false);
		//把当前tab设为选中状态
		mTabs[index].setSelected(true);
		currentTabIndex = index;
	}

	@Override
	protected void onResume() {
		// TODO Auto-generated method stub
		super.onResume();
		//小圆点提示
		if(BmobDB.create(this).hasUnReadMsg()){
			iv_recent_tips.setVisibility(View.VISIBLE);
		}else{
			iv_recent_tips.setVisibility(View.GONE);
		}
		if(BmobDB.create(this).hasNewInvite()){
			iv_contact_tips.setVisibility(View.VISIBLE);
		}else{
			iv_contact_tips.setVisibility(View.GONE);
		}
		MyMessageReceiver.ehList.add(this);// 监听推送的消息
		//清空
		MyMessageReceiver.mNewNum=0;
		//取消通知栏
		BmobNotifyManager.getInstance(this).cancelNotify();
	}
	
	@Override
	protected void onPause() {
		// TODO Auto-generated method stub
		super.onPause();
		MyMessageReceiver.ehList.remove(this);// 取消监听推送的消息
	}
	
	@Override
	public void onMessage(BmobMsg message) {
		// TODO Auto-generated method stub
		// 声音提示
		boolean isAllow = CustomApplcation.getInstance().getSpUtil().isAllowVoice();
		if(isAllow){
			CustomApplcation.getInstance().getMediaPlayer().start();
		}
		iv_recent_tips.setVisibility(View.VISIBLE);
		// 存储接收到的消息
		BmobChatManager.getInstance(this).saveReceiveMessage(message);
		if(currentTabIndex==0){
			//当前页面如果为会话页面，刷新此页面
			if(recentFragment != null){
				recentFragment.refresh();
			}
		}
	}

	@Override
	public void onNetChange(boolean isNetConnected) {
		// TODO Auto-generated method stub
		if(isNetConnected){
			ShowToast(R.string.network_tips);
		}
	}

	@Override
	public void onAddUser(BmobInvitation message) {
		// TODO Auto-generated method stub
		// 声音提示
		boolean isAllow = CustomApplcation.getInstance().getSpUtil().isAllowVoice();
		if(isAllow){
			CustomApplcation.getInstance().getMediaPlayer().start();
		}
		
		BmobDB.create(this).saveInviteMessage(message);
		
		iv_contact_tips.setVisibility(View.VISIBLE);
		
		if(currentTabIndex==1){
			if(contactFragment != null){
				contactFragment.refresh();
			}
		}else{
			//同时提醒通知
			String tickerText = message.getFromname() "请求添加好友";
			BmobNotifyManager.getInstance(this).showNotify(R.drawable.ic_launcher, tickerText, message.getFromname(), tickerText.toString(),NewFriendActivity.class);
		}
	}

	@Override
	public void onOffline() {
		// TODO Auto-generated method stub
		showOfflineDialog(this);
	}
	
	private static long firstTime;
	/**
	 * 连续按两次返回键就退出
	 */
	@Override
	public void onBackPressed() {
		// TODO Auto-generated method stub
		if (firstTime   2000 > System.currentTimeMillis()) {
			super.onBackPressed();
		} else {
			ShowToast("再按一次退出程序");
		}
		firstTime = System.currentTimeMillis();
	}
	
}