android apk下载 安装 卸载 打开
Android程序使用代码的安装和卸载！！！
//下载apk程序代码
protectedFiledownLoadFile(StringhttpUrl){
//TODOAuto-generatedmethodstub
finalStringfilename="updata.apk";
FiletmpFile=newFile("/sdcard/update");
if(!tmpFile.exists()){
tmpFile.mkdir();
}
finalFilefile=newFile("/sdcard/update/"+fileName);
try{
URLurl=newURL(httpUrl);
try{
HttpURLConnectionconn=(HttpURLConnection)url
.openConnection();
InputStreamis=conn.getInputStream();
FileOutputStreamfos=newFileOutputStream(file);
byte[]buf=newbyte[256];
conn.connect();
doublecount=0;
if(conn.getResponseCode()>=400){
Toast.makeText(Main.this,"连接超时",Toast.LENGTH_SHORT)
.show();
}else{
while(count<=100){
if(is!=null){
intnumRead=is.read(buf);
if(numRead<=0){
break;
}else{
fos.write(buf,0,numRead);
}
}else{
break;
}
}
}
conn.disconnect();
fos.close();
is.close();
}catch(IOExceptione){
//TODOAuto-generatedcatchblock
e.printStackTrace();
}
}catch(MalformedURLExceptione){
//TODOAuto-generatedcatchblock
e.printStackTrace();
}
returnfile;
}
//打开APK程序代码
privatevoidopenFile(Filefile){
//TODOAuto-generatedmethodstub
Log.e("OpenFile",file.getName());
Intentintent=newIntent();
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
intent.setAction(android.content.Intent.ACTION_VIEW);
intent.setDataAndType(Uri.fromFile(file),
"application/vnd.android.package-archive");
startActivity(intent);
}