binbinyang---Android自动检测更新功能的实现--杨彬

今天来说说 安卓开发中任何APP都会要用到的升级 更新的问题

首先写了一个 在通知栏弹出 一个简单的 带有图片.文字的 更新提示

public class MainActivity extends Activity implements OnClickListener{
public static final int  NOTIFICATION_ID = 24;

private Button but;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
but = (Button)findViewById(R.id.but);
but.setOnClickListener(this);
}
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
switch (v.getId()) {
case R.id.but:

Builder builder = new NotificationCompat.Builder(MainActivity.this);
builder.setSmallIcon(R.drawable.ic_launcher);
builder.setContentTitle("下载");
builder.setContentText("正在下载");
Notification notification= builder.build();
NotificationManager manager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
/**
* id  NOTIFICATION_ID通过这个ID 来更新
*/
manager.notify(NOTIFICATION_ID,notification);

break;

default:
break;
}

}

}

下面是关于友盟---自动更新升级下载的步骤

1.集成过程客户端集成

2首先到友盟官网下载更新的SDK，复制jar包到目标项目中的libs目录：



3. 配置AndroidManifest.xml

android.permission.WRITE_EXTERNAL_STORAGE

 权限允许将下载的apk保存到sd卡中。

android.permission.ACCESS_NETWORK_STATE

 权限允许检查网络状态，从而根据不同网络环境决定何种下载策略,务必添加该权限。

3.2 添加APPKEY和渠道到

<application>

标签下： （如果已经集成了统计SDK等友盟其他服务，不需要重复添加APPKEY）

<meta-data android:value="YOUR APP KEY" android:name="UMENG_APPKEY"/>
<meta-data android:value="Channel ID" android:name="UMENG_CHANNEL"/>

[/code]

UMENG_APPKEY：用来定位该应用的唯一性，用您该应用的UMENG APPKEY，替换value中的"YOUR APP KEY"。

UMENG_CHANNEL：用来标注应用推广渠道，不同渠道可以上传不同更新包，您可以使用20位以内的英文和数字为渠道定名，替换value中的"Channel ID"。如果不改动，将代表默认渠道。

（特别提示：如果需要使用友盟自动更新多渠道更新，必须先集成友盟统计SDK）

渠道ID
请参考第5节如何上传APK。

3.3 添加Service和Activity到

<application>

标签下： （请注意：v2.4的SDK中，对话框改为Activity实现）

注意
com.umeng包名可能有变，如果不能下载，请检查包名，替换成正确的包名。

<service
android:name="com.umeng.update.net.DownloadingService"
android:process=":DownloadingService" >
</service>
<activity
android:name="com.umeng.update.UpdateDialogActivity"
android:theme="@android:style/Theme.Translucent.NoTitleBar" >
</activity>

4.调用接口

<pre name="code" class="html">public void onCreate(Bundle  savedInstanceState) {   

super.onCreate(savedInstanceState);   

UmengUpdateAgent.update(this);

}

5.上传最新的APK

<h2 id="1_5" style="box-sizing: border-box; font-family: 'Helvetica Neue', Helvetica, 'Microsoft Yahei', Arial, sans-serif; font-weight: normal; line-height: 1.1; color: rgb(62, 62, 62); margin: 1em 0px 0.25em; font-size: 24px; padding: 0.5em; text-align: justify;"> <img src="https://img-blog.csdn.net/20160423190619605?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQv/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center" alt="" /><img src="https://img-blog.csdn.net/20160423190625855?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQv/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center" alt="" /></h2>

public class MainActivity extends Activity implements OnClickListener {
//public static final int NOTIFICATION_ID = 24;

private Button but;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

UmengUpdateAgent.update(this);
}

如果是自己写一个
升级 跟检测是否当前是最新版本

public class UpdateManager {
private ProgressBar mpProgressBar;
private Dialog mDownloadDialog;
private String mSavePath;
private int mProgress;// 进度条值
private boolean mIsCancel = false;
private static final int DOWNLOADING = 1;
private static final int DOWNLOAD_FINISH = 2;

private static final String PATH = "http://192.168.0.103/autoupdate/version.html";

private String mVersion_code;
private String mVersion_name;
private String mVersion_desc;
private String mVersion_path;
private Context mContext;

public UpdateManager(Context context) {
mContext = context;
}

private Handler mGetVersionHandler = new Handler() {
public void handleMessage(Message msg) {
JSONObject jsonObject = (JSONObject) msg.obj;
// Toast.makeText(mContext, "出错了" + jsonObject.toString(),
// 1).show();
System.out.println(jsonObject.toString() + "==========");

try {
mVersion_code = jsonObject.getString("version_code");
mVersion_name = jsonObject.getString("version_name");
mVersion_desc = jsonObject.getString("version_desc");
mVersion_path = jsonObject.getString("version_path");
if (isUpdate()) {
Toast.makeText(mContext, "需要更新", Toast.LENGTH_LONG).show();
// 需要更新 显示要更新的提示对话框
showNoticeDialog();
} else {
Toast.makeText(mContext, "不需要更新", Toast.LENGTH_LONG).show();

}

} catch (Exception e) {
// TODO: handle exception
}

};

};

private Handler mUpdateProgressHandler = new Handler() {
public void handleMessage(Message msg) {
switch (msg.what) {
case DOWNLOADING:
mpProgressBar.setProgress(mProgress);

break;
case DOWNLOAD_FINISH:
// 隐藏 销毁 下载对话框
mDownloadDialog.dismiss();
// 安装本地apk文件
break;
default:
break;
}

};
};

/*
* 检测软件是否需要更新
*/

public void checkUpdate() {
RequestQueue requestQueue = Volley.newRequestQueue(mContext);
JsonObjectRequest request = new JsonObjectRequest(PATH, null,
new Listener<JSONObject>() {

@Override
public void onResponse(JSONObject jsonObject) {

Message msg = Message.obtain();
msg.obj = jsonObject;
mGetVersionHandler.sendMessage(msg);

}
}, new Response.ErrorListener() {

@Override
public void onErrorResponse(VolleyError arg0) {
// TODO Auto-generated method stub
// Toast.makeText(mContext, "出错了" + arg0.toString(), 1)
// .show();
System.out.println(arg0.toString() + "bbbbbbbbbbb");
}
});
requestQueue.add(request);

}

/*
* 与本地版本比较判断是否需要更新
*/

protected boolean isUpdate() {

int serverVersion = Integer.parseInt(mVersion_code);
int localVersion = 1;
/**
* 拿到本地的包名
*/

try {
localVersion = mContext.getPackageManager().getPackageInfo(
"com.example.notification", 0).versionCode;
} catch (NameNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}

if (serverVersion > localVersion)
return true;
else
return false;
}

/*
* 有更新时显示提示对话框
*/

protected void showNoticeDialog() {
AlertDialog.Builder builder = new Builder(mContext);
builder.setTitle("提示");
String message = "软件有更新,需要下载吗\n" + mVersion_desc;
builder.setMessage(message);
/**
* 确认的那个按钮
*/

builder.setPositiveButton("更新", new OnClickListener() {

@Override
public void onClick(DialogInterface dialog, int which) {
// 隐藏当前对话框
dialog.dismiss();
// 显示下载的对话框
showDownloadDialog();
}
});
/**
* 取消的按钮
*/

builder.setNegativeButton("取消", new OnClickListener() {

@Override
public void onClick(DialogInterface dialog, int which) {

Toast.makeText(mContext, "取消", 1).show();
// 隐藏当前对话框
dialog.dismiss();
}

});
builder.create().show();
}

/*
* 显示正在下载对话框
*/

protected void showDownloadDialog() {

AlertDialog.Builder builder = new Builder(mContext);
View view = LayoutInflater.from(mContext).inflate(
R.layout.dialog_progress, null);
builder.setTitle("正在下载");
mpProgressBar = (ProgressBar) view.findViewById(R.id.prog);
builder.setView(view);

builder.setNegativeButton("取消", new OnClickListener() {

@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub

// 隐藏对话框
dialog.dismiss();
// 设置下载状态为取消

}
});
mDownloadDialog = builder.create();// 创建对话框
mDownloadDialog.show();

// 下载文件
downloadAPK();

}

/*
* 开启新线程下载文件
*/
private void downloadAPK() {
new Thread(new Runnable() {
@Override
public void run() {
try {
if (Environment.getExternalStorageState().equals(
Environment.MEDIA_MOUNTED)) {
String sdPath = Environment
.getExternalStorageDirectory() + "/";
mSavePath = sdPath + "jikedownload";

File dir = new File(mSavePath);
if (!dir.exists())
dir.mkdir();

// 下载文件
HttpURLConnection conn = (HttpURLConnection) new URL(
mVersion_path).openConnection();
conn.connect();
InputStream is = conn.getInputStream();
int length = conn.getContentLength();

File apkFile = new File(mSavePath, mVersion_name);
FileOutputStream fos = new FileOutputStream(apkFile);

int count = 0;
byte[] buffer = new byte[1024];
while (!mIsCancel) {
int numread = is.read(buffer);
count += numread;
// 计算进度条的当前位置
mProgress = (int) (((float) count / length) * 1);
// 更新进度条
mUpdateProgressHandler
.sendEmptyMessage(DOWNLOADING);

// 下载完成
if (numread < 0) {
mUpdateProgressHandler
.sendEmptyMessage(DOWNLOAD_FINISH);
break;
}
fos.write(buffer, 0, numread);
}
fos.close();
is.close();
}
} catch (Exception e) {
e.printStackTrace();
}
}
}).start();
}

/*
* 下载到本地后执行安装
*/

protected void installAPK() {

}
}