Android method to determine whether an SD card has been mounted

This article illustrates how Android determines whether an SD card is mounted. Share to everybody for everybody reference. The details are as follows:

BroadcastReceiver set IntentFilter as:

Intent.ACTION_MEDIA_MOUNTED
Intent.ACTION_MEDIA_EJECT
Intent.ACTION_MEDIA_REMOVED

Then public void onReceive(Context context, Intent intent) to implement your startup logic startActivity

private final BroadcastReceiver broadcastRec = new BroadcastReceiver() 
{
　　@Override
　　public void onReceive(Context context, Intent intent) {
　　if(intent.getAction().equals("android.intent.action.MEDIA_MOUNTED"))
  //SD The card has been successfully mounted 
　　{
　　imagepath = 
android.os.Environment.getExternalStorageDirectory();// your SD The card path 
　　}else 
   if(intent.getAction().equals("android.intent.action.MEDIA_REMOVED")
   // Various unmounted states 
　　||intent.getAction().equals("android.intent.action.ACTION_MEDIA_UNMOUNTED")
　　||intent.getAction().equals("android.intent.action.ACTION_MEDIA_BAD_REMOVAL"))
　　{
　　imagepath = android.os.Environment.getDataDirectory();// Your local path 
　　}
　　}
　　};
　　// in IntentFilter Select the behavior you want to monitor 
　　IntentFilter intentFilter = new IntentFilter(Intent.ACTION_MEDIA_MOUNTED);
　　intentFilter.addAction(Intent.ACTION_MEDIA_UNMOUNTED);
　　intentFilter.addAction(Intent.ACTION_MEDIA_REMOVED);
　　//intentFilter.addAction(Intent.ACTION_MEDIA_SHARED);
　　intentFilter.addAction(Intent.ACTION_MEDIA_BAD_REMOVAL);
　　//intentFilter.addAction(Intent.ACTION_MEDIA_SCANNER_STARTED);
　　//intentFilter.addAction(Intent.ACTION_MEDIA_SCANNER_FINISHED);
　　intentFilter.addDataScheme("file");
　　registerReceiver(broadcastRec, intentFilter);// Register listening function 
　　unregisterReceiver(broadcastRec);// Use the log off broadcast listener function 

Hopefully, this article has been helpful in your Android programming.