How to disable GSM connection in Android programmatically
I want to enable/disable an Android phone'开发者_运维问答s GSM connection. I need to disable/enable calls and SMS as required. How might I do this?
EDIT: This solution will also turn off wifi, bluetooth, etc...
If you want to turn off radio only, I think it's related to this issue: http://code.google.com/p/android/issues/detail?id=1065 I am really pessimistic about finding a good solution, but curious to see other answers.
See the blog article Android: Controlling Airplane Mode ,
// Toggle airplane mode.
Settings.System.putInt(
context.getContentResolver(),
Settings.System.AIRPLANE_MODE_ON, isEnabled ? 0 : 1);
// Post an intent to reload.
Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED);
intent.putExtra("state", !isEnabled);
sendBroadcast(intent);
where isEnabled
is whether airplane mode is enabled or not.
Don't forget you need the WRITE_SETTINGS permission to do this, though.
/* Toggle airplane mode for 1 of the 4 allowed types
* type allowed values: cell, wifi, bluetooth, nfc
*/
private void changeRadioComponentEnabled(Context context, String type, boolean radio_component_enabled, boolean reset){
// now toggle airplane mode from on to off, or vice versa
Settings.System.putInt(context.getContentResolver(), Settings.System.AIRPLANE_MODE_ON, radio_component_enabled ? 0 : 1);
// now change system behavior so that only one component is turned off
// this also affects the future behavior of the system button for toggling air-plane mode.
// to reset it in order to maintain the system behavior, set reset to true, otherwise we lazily make sure mobile voice is always on
Settings.System.putString(context.getContentResolver(), Settings.System.AIRPLANE_MODE_RADIOS, type);
// post an intent to reload so the menu button switches to the new state we set
Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED);
intent.putExtra("state", radio_component_enabled ? false : true);
context.sendBroadcast(intent);
// revert to default system behavior or not
if (reset){ Settings.System.putString(context.getContentResolver(), Settings.System.AIRPLANE_MODE_RADIOS, "cell,bluetooth,wifi,nfc"); }
// if reset to default is not chosen, always enable mobile cell at least
// but only if NOT changing the mobile connection...
else if (type.indexOf("cell") == 0) { Settings.System.putString(context.getContentResolver(), Settings.System.AIRPLANE_MODE_RADIOS, "cell");}
}//end method
naturally this require the permission android.permission.WRITE_SETTINGS
, and for bluetooth android.permission.BLUETOOTH_ADMIN
. For NFC you might need android.permission.NFC
.
EDITS: heavily modified since original, since I was actually using this in a different way in my own app
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