android apk更新

一，检测是否需要更新

1-1，检查当前的网络状态

1-2，获取当前版本信息

1-3，检测是否具有新版本，用户选择是否跟新

二，下载最新apk

2-1，下载最新版本的apk

三，启动更新

3-1，启动更新

1-1，检查当前的网络状态：

/**
* 获取网络类型
*
* @param context Context
* @return 网络类型
* @see [类、类#方法、类#成员]
*/
public static int getNetworkType(Context context) {

NetworkInfo networkInfo = getConnectedNetworkInfo(context);
if (networkInfo != null) {
return networkInfo.getType();
}

return -1;
}

public static NetworkInfo getConnectedNetworkInfo(Context context) {
try {
ConnectivityManager connectivity = (ConnectivityManager) context
.getSystemService(Context.CONNECTIVITY_SERVICE);
if (connectivity == null) {
Log.i(tag, "couldn't get connectivity manager");
} else {
NetworkInfo[] info = connectivity.getAllNetworkInfo();
if (info != null) {
for (int i = 0; i < info.length; i++) {
if (info[i].getState() == NetworkInfo.State.CONNECTED) {
return info[i];
}
}
}
}

} catch (Exception e) {
Log.i(tag, e.getMessage());
}
return null;
}

1-2，获取当前版本信息

public void check(View view){
PackageManager manager = getPackageManager();
PackageInfo info = null;
try {
info = manager.getPackageInfo("com.wang.demo_android", 0);
} catch (NameNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
tv_show.setText("versionCode:"+ info.versionCode +"; versionName:"+ info.versionName);
}

1-3，检测是否具有新版本，用户选择是否跟新（一般的请求网络，弹窗就好）

2-1，下载最新版本的apk，使用android 系统自带的DownloadManager

mDownloadManager = (DownloadManager) getSystemService(Context.DOWNLOAD_SERVICE);

// 设置下载的网络地址：url
Uri uri = Uri
.parse("http://gdown.baidu.com/data/wisegame/fd84b7f6746f0b18/baiduyinyue_4802.apk");
DownloadManager.Request down = new DownloadManager.Request(uri);

// 设置允许下载的网络类型
down.setAllowedNetworkTypes(DownloadManager.Request.NETWORK_MOBILE
| DownloadManager.Request.NETWORK_WIFI);

// 下载途中通知栏的显示
down.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE);
// 下载界面的显示
down.setVisibleInDownloadsUi(true);
// 设置下载后文件的存放路径
down.setDestinationInExternalFilesDir(getApplicationContext(),
Environment.DIRECTORY_DOWNLOADS, "baidumusic.apk");

// 添加到任务队列
mDownloadManager.enqueue(down);

3-1，下载完成之后（使用广播接收器），启动更新

广播接收：

class DownloadUpdateCompleteReceiver extends BroadcastReceiver {

@Override
public void onReceive(Context context, Intent intent) {
//安装apk
if(DownloadManager.ACTION_DOWNLOAD_COMPLETE.equals(intent.getAction())){
Log.i(tag, "onReceive");
//获得下载文件的Id
long apkId = intent.getLongExtra(DownloadManager.EXTRA_DOWNLOAD_ID, -1);
Uri apkUri = mDownloadManager.getUriForDownloadedFile(apkId);
//自动安装apk
installApk(apkUri);
UpdateService.this.stopSelf();
}
}

}

注册：

registerReceiver(mDownloadUpdateCompleteReceiver, new IntentFilter(DownloadManager.ACTION_DOWNLOAD_COMPLETE));

启动安装：

private void installApk(Uri apkUri) {
//通过Intent安装apk
Log.i(tag, "uri-2->"+apkUri.getPath());
Intent intent = new Intent();
intent.setAction(android.content.Intent.ACTION_VIEW);
intent.addCategory(android.content.Intent.CATEGORY_DEFAULT);
intent.setDataAndType(apkUri, "application/vnd.android.package-archive");
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
try {
getApplicationContext().startActivity(intent);
} catch (Exception e) {
e.printStackTrace();
}
Log.i(tag, "installApk");
}

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