问题
I want to call Emergency number using Android SDK.
I am using following code to call the number (911). This code works fine for all the numbers except 911 (Emergency Number). When I use 911, then it shows the dialer screen that I don't want. Is there any procedure to call 911 without open the dialer or can we stop the user to edit the number in Dialer screen?
Uri callUri = Uri.parse("tel://911");
Intent callIntent = new Intent(Intent.ACTION_DIAL,callUri);
callIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK|Intent.FLAG_ACTIVITY_NO_USER_ACTION);
startActivity(callIntent);
回答1:
The code provided should already work for this, but you need the CALL_PHONE and CALL_PRIVILEGED permission to dial emergency numbers without showing the dial-pad.
Android Reference - Manifest Permission CALL_PRIVILEGED
Once that is added to the manifest, you should be able to use the same code using the ACTION_CALL instead to direct dial:
Uri callUri = Uri.parse("tel://911");
Intent callIntent = new Intent(Intent.ACTION_CALL,callUri);
callIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK|Intent.FLAG_ACTIVITY_NO_USER_ACTION);
startActivity(callIntent);
回答2:
Action_Dial will open the dialpad, Action_Call will call directly..
However, a quote from ACTION_CALL:
Note: this Intent cannot be used to call emergency numbers. Applications can dial emergency numbers using ACTION_DIAL, however.
回答3:
Say Intent.ACTION_CALL insted of Intent.ACTION_DIAL this will call number without showing it on dial pad.
来源：https://stackoverflow.com/questions/5298099/call-911-in-android