[android] 手机卫士应用程序更新和签名

时间:2021-10-17 20:05:57

弹出升级对话框

获取AlertDialog.Builder对象,通过new出来

调用Builder对象的setTitle()方法,参数:文本

调用Builder对象的setMessage()方法,参数:文本,json传回来的信息

调用Builder对象的setPositiveButton()方法,设置确定按钮

参数:文本,OnClickListener对象,匿名内部类实现,重写onClick()方法,

方法里面下载APK,替换安装

调用Builder对象的setNegativeButton()方法,参数和上面一样,点击后

关闭对话框调用AlertDialog对象的dismiss()方法,

跳转到主页

调用Builder对象的show()方法,显示出来

替换安装

检查sdcard是否存在,

调用Environment.getExternalStorageState()方法,返回状态,

判断Environment.MEDIA_MOUNTED,如果不想等提示一下,如果相等就下载APK

下载APK

使用第三方库,afinal,拷贝到项目的libs目录下面

实例化FinalHttp对象,通过new出来

调用FinalHttp对象的download(url,target,callback)方法,下载文件,

参数:url是路径,target是保存文件路径,callback是AjaxCallback对象

保存路径:Environment.getExternalStorageDirectory()+"/mobilesafe2.0.apk"

AjaxCallback是一个接口,通过new它实现接口,

重写以下方法,onFailure(),onSuccess(),onLoading()

下载失败

显示错误信息,吐司

正在下载 onLoading(long count,long current)

显示进度,在布局文件中添加一个TextView显示进度,位于左下角

在onLoading()方法里,计算拼接好setText()显示出来

下载成功 onSuccess()

安装apk,发送隐式意图,获取Intent对象,通过new

调用Intent对象的setAction()方法,设置动作,参数:android.intent.action.VIEW

调用Intent对象的addCategory()添加类型,参数:android.intent.category.DEFAULT

调用Intent对象的setDataAndType(),设置数据和类型,参数:Uri对象,

application/vnd.android.package-archive

Uri对象通过Uri.fromfile(),从文件中湖区Uri对象,参数是FIle对象

调用startActivity(intent),开启

需要写SD卡的权限,android.permission.WRITE_EXTERNAL_STORAFE

签名

在我们的android系统中,不允许安装两个包名相同的应用

例如:

A程序员开发了一款应用 com.tsh.A

B程序员开发了一款应用 com.tsh.A

包名相同,签名相同,可以替换安装

包名相同,签名不相同,安装失败

项目上右键 ==> export ==> Export Android Application ==>

create new keystore ==>

location 选中一个空文件最好命名 xxx.keystore

password 写上密码

confirm 重复密码==>

Alias 例如:mobilesafe

Password 刚才填的密码

Confirm 重复密码

Validity(years) 有效年份,过2030年,例如:40

下面的不重要,按自己的填 ==>

Destination APK file APK的保存路径

生成一个apk,生成了一个keystore文件(非常重要),设置的密码一定要记住

第二次导出的时候,

选择Use existing keystore

Password 写上刚才填的

代码:

package com.qingguow.mobilesafe;

import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL; import net.tsz.afinal.FinalHttp;
import net.tsz.afinal.http.AjaxCallBack; import org.json.JSONException;
import org.json.JSONObject; import android.app.Activity;
import android.app.AlertDialog;
import android.app.AlertDialog.Builder;
import android.content.DialogInterface;
import android.content.DialogInterface.OnClickListener;
import android.content.Intent;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.os.Handler;
import android.os.Message;
import android.util.Log;
import android.view.animation.AlphaAnimation;
import android.widget.TextView;
import android.widget.Toast; import com.qingguow.mobilesafe.utils.StreamTools; public class SplashActivity extends Activity {
private static final String TAG = "SplashActivity";
protected static final int ENTER_HOME = 0;
protected static final int VERSION_UPDATE = 1;
protected static final int URL_ERROR = 2;
protected static final int NETWORK_ERROR = 3;
protected static final int JSON_ERROE = 4;
private TextView tv_splash_version;
private String description;
private String apkurl;
private TextView tv_show_progress; @Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_splash);
tv_splash_version = (TextView) findViewById(R.id.tv_splash_version);
tv_splash_version.setText("版本号" + getVersionName());
// 检查更新
checkVersion();
// 界面动画
AlphaAnimation aa = new AlphaAnimation(0.2f, 1.0f);
aa.setDuration(1000);
findViewById(R.id.rl_splash_root).setAnimation(aa);
tv_show_progress=(TextView) findViewById(R.id.tv_show_progress);
} private Handler handler = new Handler() {
public void handleMessage(android.os.Message msg) {
switch (msg.what) {
case ENTER_HOME:
enterHome();
break;
case VERSION_UPDATE:
// 弹窗提示
AlertDialog.Builder builder = new Builder(SplashActivity.this);
builder.setTitle("提示更新");
builder.setMessage(description); builder.setPositiveButton("立即更新", new OnClickListener() {
@Override
public void onClick(DialogInterface arg0, int arg1) {
if (Environment.getExternalStorageState().equals(
Environment.MEDIA_MOUNTED)) {
FinalHttp finalhttp=new FinalHttp();
finalhttp.download(apkurl,Environment.getExternalStorageDirectory()+"/mobilesafe2.0.apk",new AjaxCallBack<File>(){
//下载失败
@Override
public void onFailure(Throwable t, int errorNo,
String strMsg) {
t.printStackTrace();
Toast.makeText(getApplicationContext(), "下载失败",
1).show();
super.onFailure(t, errorNo, strMsg);
enterHome();
}
//正在下载
@Override
public void onLoading(long count, long current) {
int precent=(int)(current*100/count);
tv_show_progress.setText("正在下载:"+precent+"%");
super.onLoading(count, current);
}
//下载成功
@Override
public void onSuccess(File t) {
Intent intent=new Intent();
intent.setAction("android.intent.action.VIEW");
intent.addCategory("android.intent.category.DEFAULT");
intent.setDataAndType(Uri.fromFile(t), "application/vnd.android.package-archive");
startActivity(intent);
super.onSuccess(t);
} });
} else {
Toast.makeText(getApplicationContext(), "未检测到SD卡",
1).show();
} }
});
builder.setNegativeButton("稍后再说", new OnClickListener() {
@Override
public void onClick(DialogInterface arg0, int arg1) {
arg0.dismiss();
enterHome();
}
});
builder.show();
break;
case URL_ERROR:
Toast.makeText(getApplicationContext(), "URL错误", 0).show();
enterHome();
break;
case NETWORK_ERROR:
Toast.makeText(getApplicationContext(), "网络错误", 0).show();
enterHome();
break;
case JSON_ERROE:
Toast.makeText(getApplicationContext(), "JSON解析错误", 0).show();
enterHome();
break; }
} }; /**
* 进入主页
*/
private void enterHome() {
Intent intent = new Intent(SplashActivity.this, HomeActivity.class);
startActivity(intent);
finish();
}; /**
* 检查新版本
*/
private void checkVersion() {
new Thread() {
public void run() {
long startTime = System.currentTimeMillis();
Message mes = Message.obtain();
URL url;
try {
url = new URL(getString(R.string.serverurl));
HttpURLConnection conn = (HttpURLConnection) url
.openConnection();
conn.setRequestMethod("GET");
conn.setConnectTimeout(4000);
int code = conn.getResponseCode();
if (code == 200) {
InputStream is = conn.getInputStream();
String result = StreamTools.readInputStream(is);
JSONObject json = new JSONObject(result);
String newVersion = (String) json.get("version");
if (newVersion.equals(getVersionName())) {
// 进入主界面
mes.what = ENTER_HOME;
} else {
// 版本更新
mes.what = VERSION_UPDATE;
description = (String) json.get("description");
apkurl = (String) json.get("apkurl");
}
}
} catch (MalformedURLException e) {
e.printStackTrace();
Log.i(TAG, "URL错误");
mes.what = URL_ERROR;
} catch (IOException e) {
e.printStackTrace();
Log.i(TAG, "网络连接错误");
mes.what = NETWORK_ERROR;
} catch (JSONException e) {
e.printStackTrace();
Log.i(TAG, "JSON解析错误");
mes.what = JSON_ERROE;
} finally {
// 延迟效果
long endTime = System.currentTimeMillis();
long dTime = endTime - startTime;
if (dTime < 3000) {
try {
Thread.sleep(3000 - dTime);
} catch (InterruptedException e) {
}
}
handler.sendMessage(mes);
} };
}.start(); } // 获得应用版本名称
private String getVersionName() {
PackageManager pm = getPackageManager();
try {
PackageInfo info = pm.getPackageInfo(getPackageName(), 0);
return info.versionName;
} catch (Exception e) {
e.printStackTrace();
return "";
} }
}