Android项目实战手机安全卫士（02）
目录
- 项目结构图
- 源代码
- 运行结果
- 项目源代码
项目结构图
源代码
清单 01. SplashActivity.java
package com.coderdream.mobilesafe.activity;
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.ProtocolException;
import java.net.URL;
import org.xmlpull.v1.XmlPullParserException;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.AlertDialog.Builder;
import android.app.ProgressDialog;
import android.content.DialogInterface;
import android.content.DialogInterface.OnClickListener;
import android.content.SharedPreferences;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.util.Log;
import android.view.Window;
import android.view.WindowManager;
import android.view.animation.AlphaAnimation;
import android.widget.RelativeLayout;
import android.widget.TextView;
import android.widget.Toast;
import com.coderdream.mobilesafe.R;
import com.coderdream.mobilesafe.domain.UpdateInfo;
import com.coderdream.mobilesafe.engine.UpdateInfoParser;
public class SplashActivity extends Activity {
private TextView tv_splash_version;
private UpdateInfo info;
private static final int GET_INFO_SUCCESS = 10;
private static final int SERVER_ERROR = 11;
private static final int SERVER_URL_ERROR = 12;
private static final int PROTOCOL_ERROR = 13;
private static final int IO_ERROR = 14;
private static final int XML_PARSE_ERROR = 15;
private static final int DOWNLOAD_SUCCESS = 16;
private static final int DOWNLOAD_ERROR = 17;
protected static final String TAG = "SplashActivity";
private long startTime;
private RelativeLayout rl_splash;
private long endTime;
private ProgressDialog pd;
private Handler handler = new Handler() {
public void handleMessage(android.os.Message msg) {
switch (msg.what) {
case XML_PARSE_ERROR:
Toast.makeText(getApplicationContext(), "xml解析错误", Toast.LENGTH_LONG).show();
// loadMainUI();
break;
case IO_ERROR:
Toast.makeText(getApplicationContext(), "I/O错误", Toast.LENGTH_LONG).show();
// loadMainUI();
break;
case PROTOCOL_ERROR:
Toast.makeText(getApplicationContext(), "协议不支持", Toast.LENGTH_LONG).show();
// loadMainUI();
break;
case SERVER_URL_ERROR:
Toast.makeText(getApplicationContext(), "服务器路径不正确", Toast.LENGTH_LONG).show();
// loadMainUI();
break;
case SERVER_ERROR:
Toast.makeText(getApplicationContext(), "服务器内部异常", Toast.LENGTH_LONG).show();
// loadMainUI();
break;
case GET_INFO_SUCCESS:
String serverversion = info.getVersion();
String currentversion = getVersion();
if (currentversion.equals(serverversion)) {
Log.i(TAG, "版本号相同进入主界面");
// loadMainUI();
} else {
Log.i(TAG, "版本号不相同,升级对话框");
showUpdateDialog();
}
break;
case DOWNLOAD_SUCCESS:
Log.i(TAG, "文件下载成功");
// File file = (File) msg.obj;
// installApk(file);
break;
case DOWNLOAD_ERROR:
Toast.makeText(getApplicationContext(), "下载数据异常", Toast.LENGTH_LONG).show();
// loadMainUI();
break;
}
};
};
/**
* 显示升级提示的对话框
*/
protected void showUpdateDialog() {
// 创建了对话框的构造器
AlertDialog.Builder builder = new Builder(this);
// 设置对话框的提示内容
builder.setIcon(getResources().getDrawable(R.drawable.notification));
// 设置升级标题
builder.setTitle("升级提示");
// 设置升级提示内容
builder.setMessage(info.getDescription());
// 创建下载进度条
pd = new ProgressDialog(SplashActivity.this);
// 设置进度条在显示时的提示消息
pd.setMessage("正在下载");
// 指定显示下载进度条为水平形状
pd.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
// 设置升级按钮
builder.setPositiveButton("升级", new OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
// loadMainUI();
}
});
builder.setNegativeButton("取消", new OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
// loadMainUI();
}
});
builder.create().show();
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// 设置为无标题栏
requestWindowFeature(Window.FEATURE_NO_TITLE);
// 设置为全屏模式
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
setContentView(R.layout.activity_splash);
rl_splash = (RelativeLayout) findViewById(R.id.rl_splash);
tv_splash_version = (TextView) findViewById(R.id.tv_splash_version);
tv_splash_version.setText("版本号:" + getVersion());
AlphaAnimation aa = new AlphaAnimation(0.3f, 1.0f);
aa.setDuration(2000);
rl_splash.startAnimation(aa);
// 1.连接服务器获取服务器上的配置信息.
new Thread(new CheckVersionTask()) {
}.start();
}
/**
* 连网检查应用的版本号与服务端上的版本号是否相同
*
* @author Administrator
*
*/
private class CheckVersionTask implements Runnable {
public void run() {
// 获取Sdcard下的config.xml文件，如果该文件不存在，那么将会自动创建该文件
SharedPreferences sp = getSharedPreferences("config", MODE_PRIVATE);
// 由sp对象来获取autoupdate所对应的boolean值，如果该键不存在，默认返回true
boolean autoupdate = sp.getBoolean("autoupdate", true);
// 自动更新没有开启
if (!autoupdate) {
try {
// 睡眠2秒钟的是为了播放动画
Thread.sleep(2000);
} catch (InterruptedException e) {
e.printStackTrace();
}
// 睡眠2秒钟播放动画完毕后进入程序主界面
// loadMainUI();
}
startTime = System.currentTimeMillis();
Message msg = Message.obtain();
try {
// 获取服务端的配置信息的连接地址
String serverurl = getResources().getString(R.string.serverurl);
URL url = new URL(serverurl);
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setRequestMethod("GET");// 设置请求方式
conn.setConnectTimeout(5000);
int code = conn.getResponseCode();// 获取响应码
if (code == 200) {// 响应码为200时，表示与服务端连接成功
InputStream is = conn.getInputStream();
info = UpdateInfoParser.getUpdateInfo(is);
endTime = System.currentTimeMillis();
long resulttime = endTime - startTime;
if (resulttime < 2000) {
try {
Thread.sleep(2000 - resulttime);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
msg.what = GET_INFO_SUCCESS;
handler.sendMessage(msg);
} else {
// 服务器状态错误.
msg.what = SERVER_ERROR;
handler.sendMessage(msg);
endTime = System.currentTimeMillis();
long resulttime = endTime - startTime;
if (resulttime < 2000) {
try {
Thread.sleep(2000 - resulttime);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
} catch (MalformedURLException e) {
e.printStackTrace();
msg.what = SERVER_URL_ERROR;
handler.sendMessage(msg);
} catch (ProtocolException e) {
msg.what = PROTOCOL_ERROR;
handler.sendMessage(msg);
e.printStackTrace();
} catch (IOException e) {
msg.what = IO_ERROR;
handler.sendMessage(msg);
e.printStackTrace();
} catch (XmlPullParserException e) {
msg.what = XML_PARSE_ERROR;
handler.sendMessage(msg);
e.printStackTrace();
}
}
}
/**
* <pre>
* 获取当前应用程序的版本号。
* 版本号存在于我们的APK中对应的清单文件中（直接解压APK后，即可看到对应的清单文件），
* 版本号是manifest节点中的android:versionName="1.0"
* 当一个应用程序被装到手机后 ，该apk拷贝到手机的data/app目录下（也就是系统中），
* 如图6。所以想得到版本号，我们需要拿到与系统相关的服务，就可以得到apk中的信息了
*
* </pre>
*
* @return
*/
private String getVersion() {
// 得到系统的包管理器。已经得到了apk的面向对象的包装
PackageManager pm = this.getPackageManager();
try {
// 参数一：当前应用程序的包名 参数二：可选的附加消息，这里我们用不到 ，可以定义为0
PackageInfo info = pm.getPackageInfo(getPackageName(), 0);
// 返回当前应用程序的版本号
return info.versionName;
} catch (Exception e) {// 包名未找到的异常，理论上， 该异常不可能会发生
e.printStackTrace();
return "";
}
}
}
清单 02. UpdateInfo.java
package com.coderdream.mobilesafe.domain;
public class UpdateInfo {
private String version;
private String description;
private String apkurl;
public String getVersion() {
return version;
}
public void setVersion(String version) {
this.version = version;
}
public String getDescription() {
return description;
}
public void setDescription(String description) {
this.description = description;
}
public String getApkurl() {
return apkurl;
}
public void setApkurl(String apkurl) {
this.apkurl = apkurl;
}
}
清单 03. UpdateInfoParser.java
package com.coderdream.mobilesafe.engine;
import java.io.IOException;
import java.io.InputStream;
import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;
import android.util.Xml;
import com.coderdream.mobilesafe.domain.UpdateInfo;
/**
*
* 解析XML数据
*
*/
public class UpdateInfoParser {
/**
* @param is
* xml文件的输入流
* @return updateinfo的对象
* @throws XmlPullParserException
* @throws IOException
*/
public static UpdateInfo getUpdateInfo(InputStream is) throws XmlPullParserException, IOException {
// 获得一个Pull解析的实例
XmlPullParser parser = Xml.newPullParser();
// 将要解析的文件流传入
parser.setInput(is, "UTF-8");
// 创建UpdateInfo实例，用于存放解析得到的xml中的数据，最终将该对象返回
UpdateInfo info = new UpdateInfo();
// 获取当前触发的事件类型
int type = parser.getEventType();
// 使用while循环，如果获得的事件码是文档结束的话，那么就结束解析
while (type != XmlPullParser.END_DOCUMENT) {
if (type == XmlPullParser.START_TAG) {// 开始元素
if ("version".equals(parser.getName())) {// 判断当前元素是否是读者需要检索的元素，下同
// 因为内容也相当于一个节点，所以获取内容时需要调用parser对象的nextText()方法才可以得到内容
String version = parser.nextText();
info.setVersion(version);
} else if ("description".equals(parser.getName())) {
String description = parser.nextText();
info.setDescription(description);
} else if ("apkurl".equals(parser.getName())) {
String apkurl = parser.nextText();
info.setApkurl(apkurl);
}
}
type = parser.next();
}
return info;
}
}
清单 03. config.xml
<?xml version="1.0" encoding="utf-8"?>
<resources>
<string name="serverurl">http://192.168.0.101:8080/info.xml</string>
</resources>
运行结果
