public class MainActivity extends Activity {    public static final String[] dualSimTypes = { "subscription", "Subscription",         "com.android.phone.extra.slot",         "phone", "com.android.phone.DialingMode",         "simId", "simnum", "phone_type",         "simSlot" };    EditText inputV;        @Override    PRotected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);                inputV = (EditText) findViewById(R.id.input);                findViewById(R.id.call).setOnClickListener(new View.OnClickListener() {                        @Override            public void onClick(View arg0) {                String number = inputV.getText().toString().trim();               if (number.equals("")) {                    Toast.makeText(MainActivity.this, "輸入號碼不恩為空", 1500).show();               } else {                   call(number);                }            }        });    }        //subscription 0為1卡;1為2卡    private void call(String phone) {        Intent callIntent = new Intent(Intent.ACTION_CALL)                .setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);        callIntent.setData(Uri.parse("tel:" + phone));        for (int i=0; i < dualSimTypes.length; i++) {            callIntent.putExtra(dualSimTypes[i], 1);        }        this.startActivity(callIntent);    }    }