我正在尝试将图像和视频从服务器下载到SD卡以供离线播放。 但问题是图像和视频大小是否超过35 mb而不是视频未下载且应用程序崩溃。
我的图片尺寸高达50mb，视频尺寸为50到500mb，大部分视频尺寸为300mb，因此我如何下载与此尺寸相关的图像和视频。
这里我把我的代码放在一边，以便你可以检查它
HomeActivity.java
public class HomeActivity extends Activity
{
ProgressDialog progressdialog;
ArrayList<HashMap<String,String>> myplaylist = new ArrayList<HashMap<String,String>>();
String filename="";
int count=0;
PowerManager pm;
WakeLock wl;
ImageView imageview;
VideoView videoview;
int length=0;
int i=0;
boolean video=false;
private final int TIMEOUT_CONNECTION = 10000;//5sec
private final int TIMEOUT_SOCKET = 10000;//30sec
@SuppressLint("Wakelock")
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_home);
imageview=(ImageView)findViewById(R.id.imageview);
videoview=(VideoView)findViewById(R.id.videoview);
pm = (PowerManager)getApplicationContext().getSystemService(
getApplicationContext().POWER_SERVICE);
wl = pm.newWakeLock(PowerManager.FULL_WAKE_LOCK, "WakeLockOn");
wl.acquire();
HashMap<String, String> map = new HashMap<String, String>();
map.put("image","http://pr83.webofficeserver.info/img/sliderimg/original/1387205637Desertkp123-232.jpg");
map.put("type","video");
myplaylist.add(map);
HashMap<String, String> map2 = new HashMap<String, String>();
map2.put("image","http://pr83.webofficeserver.info/img/thumbnails/video/dummy.mov");
map2.put("type","image");
myplaylist.add(map2);
HashMap<String, String> map3 = new HashMap<String, String>();
map3.put("image","http://pr83.webofficeserver.info/img/sliderimg/original/1387206137planet-earth-in-space.jpg");
map3.put("type","video");
myplaylist.add(map3);
HashMap<String, String> map4 = new HashMap<String, String>();
map4.put("image","http://pr83.webofficeserver.info/img/thumbnails/video/BrandHi-240.mp4");
map4.put("type","video");
myplaylist.add(map4);
new DownloadFileFromURL().execute(myplaylist.get(count).get("image").toString());
}
// For Download File From Url
public class DownloadFileFromURL extends AsyncTask<String, String, String>
{
private final int TIMEOUT_CONNECTION = 10000;//5sec
private final int TIMEOUT_SOCKET = 10000;//30sec
@Override
protected void onPreExecute()
{
progressdialog=ProgressDialog.show(HomeActivity.this, "","Please Wait");
}
@Override
protected String doInBackground(String... f_url) {
int count;
try {
String root = Environment.getExternalStorageDirectory().toString();
new File(root + "/montorwerbung").mkdirs();
URL url = new URL(f_url[0]);
Uri u = Uri.parse(f_url[0]);
File f1 = new File("" + u);
filename=f1.getName();
File file = new File(root + "/montorwerbung" , filename);
Log.e("File Download Sdcard Filename","--->"+filename);
Log.e("File Download Sdcard Path","--->"+file.toString());
long startTime = System.currentTimeMillis();
//Open a connection to that URL.
URLConnection ucon = url.openConnection();
//this timeout affects how long it takes for the app to realize there's a connection problem
// ucon.setReadTimeout(TIMEOUT_CONNECTION);
// ucon.setConnectTimeout(TIMEOUT_SOCKET);
//Define InputStreams to read from the URLConnection.
// uses 3KB download buffer
InputStream is = ucon.getInputStream();
BufferedInputStream inStream = new BufferedInputStream(is, 1024 * 1024);
FileOutputStream outStream = new FileOutputStream(file);
byte[] buff = new byte[10 * 1024];
//Read bytes (and store them) until there is nothing more to read(-1)
int len;
while ((len = inStream.read(buff)) != -1)
{
outStream.write(buff,0,len);
}
//clean up
outStream.flush();
outStream.close();
inStream.close();
} catch (Exception e)
{
Log.e("Download file frp, server Exception", "Exception : "
+ e.getMessage(), e);
//Log.e("Error: ",+e.printStackTrace());
}
return null;
}
@Override
protected void onPostExecute(String file_url)
{
if(progressdialog.isShowing())
{
progressdialog.dismiss();
}
Log.e("Count: ","----->"+count);
count++;
if(count<myplaylist.size())
{
new DownloadFileFromURL2().execute(myplaylist.get(count).get("image").toString());
}
else
{
wl.release();
Log.e("No More Downloads","--->");
}
}
}
class DownloadFileFromURL2 extends AsyncTask<String, String, String>
{
@Override
protected void onPreExecute()
{
progressdialog=ProgressDialog.show(HomeActivity.this, "","Please Wait");
}
@Override
protected String doInBackground(String... f_url) {
int count;
try {
String root = Environment.getExternalStorageDirectory().toString();
new File(root + "/montorwerbung").mkdirs();
URL url = new URL(f_url[0]);
Uri u = Uri.parse(f_url[0]);
File f1 = new File("" + u);
filename=f1.getName();
File file = new File(root + "/montorwerbung" , filename);
Log.e("File Download Sdcard Filename","--->"+filename);
Log.e("File Download Sdcard Path","--->"+file.toString());
long startTime = System.currentTimeMillis();
//Open a connection to that URL.
URLConnection ucon = url.openConnection();
//Define InputStreams to read from the URLConnection.
// uses 3KB download buffer
InputStream is = ucon.getInputStream();
BufferedInputStream inStream = new BufferedInputStream(is, 1024 * 10);
FileOutputStream outStream = new FileOutputStream(file);
byte[] buff = new byte[10 * 1024];
//Read bytes (and store them) until there is nothing more to read(-1)
int len;
while ((len = inStream.read(buff)) != -1)
{
outStream.write(buff,0,len);
}
//clean up
outStream.flush();
outStream.close();
inStream.close();
} catch (Exception e)
{
Log.e("Download file frp, server Exception", "Exception : "
+ e.getMessage(), e);
//Log.e("Error: ",+e.printStackTrace());
}
return null;
}
@Override
protected void onPostExecute(String file_url)
{
if(progressdialog.isShowing())
{
progressdialog.dismiss();
}
count++;
Log.e("Count: ","----->"+count);
if(count<myplaylist.size())
{
new DownloadFileFromURL().execute(myplaylist.get(count).get("image").toString());
count++;
}
else
{
wl.release();
Log.e("No More Downloads 2","--->");
}
}
}