黑马安全卫士

package com.itheima62.mobileguard.activities;

import java.io.BufferedReader;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;

import org.json.JSONException;
import org.json.JSONObject;

import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.DialogInterface.OnCancelListener;
import android.content.DialogInterface.OnClickListener;
import android.content.Intent;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.content.pm.PackageManager.NameNotFoundException;
import android.net.Uri;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.os.SystemClock;
import android.view.Menu;
import android.view.View;
import android.view.animation.AlphaAnimation;
import android.view.animation.Animation;
import android.view.animation.AnimationSet;
import android.view.animation.RotateAnimation;
import android.view.animation.ScaleAnimation;
import android.widget.ProgressBar;
import android.widget.RelativeLayout;
import android.widget.TextView;
import android.widget.Toast;

import com.itheima62.mobileguard.R;
import com.itheima62.mobileguard.domain.UrlBean;
import com.lidroid.xutils.HttpUtils;
import com.lidroid.xutils.exception.HttpException;
import com.lidroid.xutils.http.ResponseInfo;
import com.lidroid.xutils.http.callback.RequestCallBack;

public class SplashActivity extends Activity {

private static final int LOADMAIN = 1;//加载主界面
private static final int SHOWUPDATEDIALOG = 2;//显示是否更新的对话框
protected static final int ERROR = 3;//错误统一代号
private RelativeLayout rl_root;// 界面的根布局组件
private int versionCode;// 版本号
private String versionName;// 版本名
private TextView tv_versionName;// 显示版本名的组件
private UrlBean parseJson;//url信息封装bean
private long startTimeMillis;//记录开始访问网络的时间
private ProgressBar pb_download;//下载最新版本apk的进度条

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// 初始化界面
initView();
// 初始化数据
initData();
// 初始化动画
initAnimation();
// 检测服务器的版本
checkVerion();

}

private void initData() {
// 获取自己的版本信息
PackageManager pm = getPackageManager();
try {
PackageInfo packageInfo = pm.getPackageInfo(getPackageName(), 0);
// 版本号
versionCode = packageInfo.versionCode;
// 版本名
versionName = packageInfo.versionName;

// 设置textview
tv_versionName.setText(versionName);
} catch (NameNotFoundException e) {
// can not reach 异常不会发生
}
}

private void checkVerion() {
// 耗时操作都要放到子线程中执行
new Thread(new Runnable() {

@Override
public void run() {
BufferedReader bfr = null;
HttpURLConnection conn = null;
int errorCode = -1;//正常，没有错误
try {
startTimeMillis = System.currentTimeMillis();

URL url = new URL("http://10.0.2.2:8080/guardversion.json");
conn = (HttpURLConnection) url
.openConnection();
// 读取数据的超时时间
conn.setReadTimeout(5000);
// 网络连接超时
conn.setConnectTimeout(5000);
// 设置请求方式
conn.setRequestMethod("GET");
// 获取相应结果
int code = conn.getResponseCode();

if (code == 200) {// 数据获取成功
// 获取读取的字节流
InputStream is = conn.getInputStream();
// 把字节流转换成字符流
bfr = new BufferedReader(
new InputStreamReader(is));
// 读取一行信息
String line = bfr.readLine();
// json字符串数据的封装
StringBuilder json = new StringBuilder();
while (line != null) {
json.append(line);
line = bfr.readLine();
}
parseJson = parseJson(json);//返回数据封装信息

} else {
errorCode = 404;
}
} catch (MalformedURLException e) {//4002
errorCode = 4002;
e.printStackTrace();
} catch (IOException e) {// 4001
// TODO Auto-generated catch block
//
errorCode = 4001;
e.printStackTrace();
} catch (JSONException e) {
// TODO Auto-generated catch block
errorCode = 4003;
e.printStackTrace();
} finally {
/*if (errorCode == -1){
isNewVersion(parseJson);// 是否有新版本
} else {
Message msg = Message.obtain();
msg.what = ERROR;
msg.arg1 = errorCode;
handler.sendMessage(msg);//发送错误信息
}*/
Message msg = Message.obtain();
if (errorCode == -1){
msg.what = isNewVersion(parseJson);//检测是否有新版本
} else {
msg.what = ERROR;
msg.arg1 = errorCode;
}
long endTime = System.currentTimeMillis();
if (endTime - startTimeMillis < 3000){
SystemClock.sleep(3000 - (endTime - startTimeMillis));//时间不超过3秒，补足3秒
}
handler.sendMessage(msg);//发送消息
try {
//关闭连接资源
if (bfr == null || conn == null){
return;
}
bfr.close();
conn.disconnect();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}

}

}
}).start();
}

private Handler handler = new Handler(){
public void handleMessage(android.os.Message msg) {
//处理消息
switch (msg.what) {
case LOADMAIN://加载主界面
loadMain();
break;
case ERROR://有异常
switch (msg.arg1) {
case 404://资源找不到
Toast.makeText(getApplicationContext(), "404资源找不到", 0).show();
break;
case 4001://找不到网络
Toast.makeText(getApplicationContext(), "4001没有网络", 0).show();
break;
case 4003://json格式错误
Toast.makeText(getApplicationContext(), "4003json格式错误", 0).show();
break;
default:
break;
}
loadMain();//进入主界面
break;
case SHOWUPDATEDIALOG://显示更新版本的对话框
showUpdateDialog();
break;
default:
break;
}
}

};

private void loadMain() {
Intent intent = new Intent(SplashActivity.this,HomeActivity.class);
startActivity(intent);//进入主界面
finish();//关闭自己
};
/**
* 在子线程中执行
* @param parseJson
*/
protected int isNewVersion(UrlBean parseJson) {
int serverCode = parseJson.getVersionCode();// 获取服务器的版本

if (serverCode == versionCode){//版本一致
return LOADMAIN;
/*//进入主界面
Message msg = Message.obtain();
msg.what = LOADMAIN;
handler.sendMessage(msg);*/
} else {//有新版本
return SHOWUPDATEDIALOG;
}
}

/**
* 显示是否更新新版本的对话框
*/
protected void showUpdateDialog() {
// TODO Auto-generated method stub
//对话框的上下文 是Activity的class,AlertDialog是Activity的一部分
AlertDialog.Builder builder = new AlertDialog.Builder(this);
//让用户禁用取消操作
//builder.setCancelable(false);
builder.setOnCancelListener(new OnCancelListener() {

@Override
public void onCancel(DialogInterface dialog) {
//取消的事件处理
//进入主界面
loadMain();
}
})
.setTitle("提醒")
.setMessage("是否更新新版本？新版本的具有如下特性：" + parseJson.getDesc())
.setPositiveButton("更新", new OnClickListener() {

@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
//更新apk
System.out.println("更新apk");
//访问网络，下载新的apk
downLoadNewApk();//下载新版本
}
}).setNegativeButton("取消", new OnClickListener() {

@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
//进入主界面
loadMain();
}
});
builder.show();//显示对话框
}

/**
* 新版本的下载安装
*/
protected void downLoadNewApk() {
HttpUtils utils = new HttpUtils();
//parseJson.getUrl() 下载的url
// target  本地路径
System.out.println(parseJson.getUrl());
//先删除掉xx.apk
File file = new File("/mnt/sdcard/xx.apk");
file.delete();//删除文件
utils.download(parseJson.getUrl(), "/mnt/sdcard/xx.apk", new RequestCallBack<File>() {

@Override
public void onLoading(long total, long current, boolean isUploading) {
// TODO Auto-generated method stub
pb_download.setVisibility(View.VISIBLE);//设置进度的显示
pb_download.setMax((int) total);//设置进度条的最大值
pb_download.setProgress((int) current);//设置当前进度
super.onLoading(total, current, isUploading);
}

@Override
public void onSuccess(ResponseInfo<File> arg0) {
// TODO Auto-generated method stub
//下载成功
//在主线程中执行
Toast.makeText(getApplicationContext(), "下载新版本成功", 1).show();
//安装apk
installApk();//安装apk
pb_download.setVisibility(View.GONE);//隐藏进度条
}

@Override
public void onFailure(HttpException arg0, String arg1) {
// TODO Auto-generated method stub
//下载失败
Toast.makeText(getApplicationContext(), "下载新版本失败", 1).show();
pb_download.setVisibility(View.GONE);//隐藏进度条
}
});
}

/**
* 安装下载的新版本
*/
protected void installApk() {
/*<intent-filter>
<action android:name="android.intent.action.VIEW" />
<category android:name="android.intent.category.DEFAULT" />
<data android:scheme="content" />
<data android:scheme="file" />
<data android:mimeType="application/vnd.android.package-archive" />
</intent-filter>*/
Intent intent = new Intent("android.intent.action.VIEW");
intent.addCategory("android.intent.category.DEFAULT");
String type = "application/vnd.android.package-archive";
Uri data = Uri.fromFile(new File("/mnt/sdcard/xx.apk"));
intent.setDataAndType(data , type);
startActivityForResult(intent,0);

}

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
// TODO Auto-generated method stub
//如果用户取消更新apk，那么直接进入主界面
loadMain();
super.onActivityResult(requestCode, resultCode, data);
}

/**
* @param jsonString
*            url的json数据
* @return url信息封装对象
* @throws JSONException
*/
protected UrlBean parseJson(StringBuilder jsonString) throws JSONException {
UrlBean bean = new UrlBean();
JSONObject jsonObj;

// {"version":"2","url":"http://10.0.2.2:8080/xxx.apk","desc":"增加了防病毒功能"}
jsonObj = new JSONObject(jsonString + "");
int versionCode = jsonObj.getInt("version");
String url = jsonObj.getString("url");
String desc = jsonObj.getString("desc");
// 封装结果数据
bean.setDesc(desc);
bean.setUrl(url);
bean.setVersionCode(versionCode);

return bean;
}

/**
* 初始化界面
*/
private void initView() {
setContentView(R.layout.activity_main);
rl_root = (RelativeLayout) findViewById(R.id.rl_splash_root);
tv_versionName = (TextView) findViewById(R.id.tv_splash_version_name);
pb_download = (ProgressBar) findViewById(R.id.pb_splash_download_progress);
}

/**
* 动画显示
*/
private void initAnimation() {
// showAlpha();
// Alpha动画0.0完全透明
AlphaAnimation aa = new AlphaAnimation(0.0f, 1.0f);
// 设置动画播放的时间 毫秒为单位
aa.setDuration(3000);
// 界面停留在动画结束状态
aa.setFillAfter(true);

RotateAnimation rotate = new RotateAnimation(0, 360,
// 设置锚点
Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF,
0.5f);
// 显示时间
rotate.setDuration(3000);
// 界面停留在结束状态
rotate.setFillAfter(true);

ScaleAnimation sa = new ScaleAnimation(0.0f, 1.0f, 0.0f, 1.0f,
// 设置锚点
Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF,
0.5f);
// 显示时间
sa.setDuration(3000);
// 界面停留在结束状态
sa.setFillAfter(true);

// 创建动画
AnimationSet as = new AnimationSet(true);

as.addAnimation(sa);
as.addAnimation(rotate);
as.addAnimation(aa);
// 同时播放动画
rl_root.startAnimation(as);

}

/**
* Alpha显示
*/
private void showAlpha() {
// Alpha动画0.0完全透明
AlphaAnimation aa = new AlphaAnimation(0.0f, 1.0f);
// 设置动画播放的时间毫秒为单位
aa.setDuration(3000);
// 界面停留在动画结束状态
aa.setFillAfter(true);
// 给组件设置动态
rl_root.startAnimation(aa);
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}

}