Seeking the Proper Level}
}
Step #4: Choose and Use the Bridge.................................................
With all that behind us, now we need to actually pick the right
implementation of the MobileContactsBridge interface and use it, replacing
our former hard-wired Android 2.x API usage in sendSMS().
One way to determine which implementation to use is to see what SDK we
are running. To do that, we can use the SDK property of the android.os.Build
class (which you will need to add as in import to DetailForm). This contains
a String representation of our API level, with 5 being Android 2.0, 4 being
Android 1.6, and so on. Note that while there is an SDK_INT property that
would save us the String-to-integer conversion, it is not available on
Android 1.5.
So, replace your current implementation of sendSMS() in DetailForm to:
private void sendSMS() {
MobileContactsBridge bridge=buildBridge();
final Cursor c=bridge.getMobileNumbers(this);DialogInterface.OnClickListener onSMSClicked=
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int position) {
c.moveToPosition(position);noReallySendSMS(c.getString( 2 ));
}
};new AlertDialog.Builder(this)
.setTitle("Pick a Person")
.setCursor(c, onSMSClicked, bridge.getDisplayNameField())
.show();
}This delegates the creation of the actual MobileContactsBridge to a
buildBridge() method, which you will also need to add to DetailForm:
private static MobileContactsBridge buildBridge() {
int sdk=new Integer(Build.VERSION.SDK).intValue();