7.0以上版本要注意：添加以下代码。还要再Manifast中增加Provider，在res目录下创建xml目录，在xml目录下创建file_path.xml文件
public class UpdateTaskextends AsyncTask {
private Contextcontext;
private ProgressDialogpd; //进度条对话框
public UpdateTask(Context context) {
this.context = context;
}
@Override
protected void onPreExecute() {
pd =new ProgressDialog(context);
pd.setCanceledOnTouchOutside(false);
pd.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
pd.setMessage("正在下载更新");
pd.setProgressNumberFormat("%1d kb/%2d kb");//进度和总数
pd.setCancelable(false);
pd.show();
super.onPreExecute();
}
@Override
protected FiledoInBackground(String... params) {
String path = params[0];
String verNew = params[1];
HttpURLConnection conn =null;
File file =null;
//如果相等的话表示当前的sdcard挂载在手机上并且是可用的
if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {
URL url =null;
try {
url =new URL(path);
}catch (MalformedURLException e) {
e.printStackTrace();
}
try {
if (url.getProtocol().toLowerCase().equals("https")) {
HttpsURLConnection https = (HttpsURLConnection) url.openConnection();
https.setHostnameVerifier(SSLSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER);
conn = https;
}else {
conn = (HttpURLConnection) url.openConnection();
}
conn.setConnectTimeout(10000);
//获取到文件的大小
int count = conn.getContentLength();
InputStream is = conn.getInputStream();
file =new File(Environment.getExternalStorageDirectory(), "nodepp." + verNew +".apk");//下载到本地的app名
FileOutputStream fos =new FileOutputStream(file);
BufferedInputStream bis =new BufferedInputStream(is);
byte[] buffer =new byte[1024];
int len;
int total =0;
while ((len = bis.read(buffer)) != -1) {
fos.write(buffer, 0, len);
total += len;
//获取当前下载量
publishProgress(total, count);
}
fos.close();
bis.close();
is.close();
return file;
}catch (Exception e) {
e.printStackTrace();
}finally {
}
}else {
return null;
}
return file;
}
@Override
protected void onProgressUpdate(Integer... values) {
pd.setProgress(values[0] /1024);
pd.setMax(values[1] /1024);
super.onProgressUpdate(values);
}
@Override
protected void onPostExecute(File file) {
if (file !=null) {
//安装apk
Intent intent =new Intent();
//执行动作
intent.setAction(Intent.ACTION_VIEW);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
if(Build.VERSION.SDK_INT>=24) {//判读版本是否在7.0以上
//7.0以上需要通过FileProvider获取uri
Uri apkUri = FileProvider.getUriForFile(context, "com.nodepp.smartnode.fileprovider", file);
intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);//添加这一句表示对目标应用临时授权该Uri所代表的文件
intent.setDataAndType(apkUri, "application/vnd.android.package-archive");
}else {
//执行的数据类型，此处Android应为android，否则造成安装不了
intent.setDataAndType(Uri.fromFile(file), "application/vnd.android.package-archive");
}
context.startActivity(intent);
pd.dismiss();
((Activity)context).finish();
}else {
pd.dismiss();
// 下载app失败
AlertDialog dialog =new AlertDialog.Builder(context).setTitle("提示")
.setMessage("应用下载失败")
.setCancelable(false)
.setPositiveButton("确定",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog,
int which) {
dialog.dismiss();
}
}).create();
dialog.show();
}
}
}